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You searched for: Subject Puccinia graminis Remove constraint Subject: Puccinia graminis Subject seedlings Remove constraint Subject: seedlings
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1. Comparative sequencing and SNP marker validation for oat stem rust resistance gene Pg6 in a diverse collection of Avena accessions

Author:
Tyler C. Gordon; Yue Jin; Nicholas A. Tinker; Wubishet A. Bekele; Samuel Gale; Harold Bockelman; J. Michael Bonman
Source:
Theoretical and applied genetics 2022 v.135 no.4 pp. 1307-1318
ISSN:
0040-5752
Subject:
Avena strigosa; Puccinia graminis; chromosome mapping; chromosomes; diploidy; germplasm; introgression; oats; phenotype; resistance genes; seedlings; stem rust; virulence
Abstract:
... KEY MESSAGE: Comparative sequence analysis was used to design a SNP marker that aided in the identification of new sources of oat stem rust resistance. New races of Puccinia graminis f. sp. avenae (Pga) threaten global oat production. An A. strigosa accession known to carry the broadly effective oat stem rust resistance gene, Pg6, was crossed with two susceptible A. strigosa accessions to generate ...
Handle:
10113/7709513
DOI:
10.1007/s00122-022-04032-z

2. Diversity of stem rust resistance in modern Siberian bread wheat (Triticum aestivum) germplasm

Author:
Vasiliy N. Kelbin; Ekaterina S. Skolotneva; Vladimir P. Shamanin; Elena A. Salina
Source:
Plant breeding 2022 v.141 no.2 pp. 194-203
ISSN:
0179-9541
Subject:
Puccinia graminis; Siberia; Triticum aestivum; fungi; genetic resistance; germplasm; phenotype; seedlings; stem rust; wheat
Abstract:
... Stem rust disease caused by the obligate biotrophic fungus Puccinia graminis f. sp. tritici significantly reduces the yield and quality of wheat grain. A total of 92 entries of new Siberian agricultural wheat germplasm were studied with an integrated approach: phenotyping in the field and seedling stage reactions and using molecular markers to identify stem rust resistance genes. Among the tested ...
DOI:
10.1111/pbr.12999

3. Molecular and Cytogenetic Identification of Stem Rust Resistant Wheat–Thinopyrum intermedium Introgression Lines

Author:
Jianbo Li; Yinguang Bao; Ran Han; Xiaolu Wang; Wenjing Xu; Guangrong Li; Zujun Yang; Xiaojun Zhang; Xin Li; Aifeng Liu; Haosheng Li; Jianjun Liu; Peng Zhang; Cheng Liu
Source:
Plant disease 2022 v.106 no.9 pp. 2447-2454
ISSN:
0191-2917
Subject:
Puccinia graminis; Thinopyrum intermedium; cytogenetics; fluorescence; genomics; introgression; introns; pathotypes; polymerase chain reaction; seedlings; stem rust; wheat; wild relatives
Abstract:
... Thinopyrum intermedium (JJJˢJˢStSt, 2n = 6x = 42), a wild relative of common wheat, possesses many desirable agronomic genes for wheat improvement. The production of wheat–Thinopyrum intermedium introgression lines is a key step for transferring these beneficial genes into wheat. In this study, we characterized three wheat–Thinopyrum intermedium introgression lines TA3681, TA5566, and TA5567 using ...
DOI:
10.1094/PDIS-10-21-2274-RE

4. Virulence Characterization of Puccinia graminis f. sp. avenae and Resistance of Oat Cultivars in China

Author:
Tianya Li; Yiwei Xu; Xue Zhang; Xianxin Wu; Yazhao Zhang; Yuanhu Xuan; Shu Wang
Source:
Plant disease 2022 v.106 no.3 pp. 901-905
ISSN:
0191-2917
Subject:
Puccinia graminis; cost effectiveness; cultivars; evolution; mature plants; oats; pathogens; seedlings; stem rust; virulence; China
Abstract:
... Oat stem rust, caused by Puccinia graminis f. sp. avenae, is one of the most devastating diseases of oat. The most cost-effective and environmentally friendly strategy to control this disease is the use of resistant cultivars. However, P. graminis f. sp. avenae can overcome the resistance of cultivars by rapidly changing its virulence. Thus, information on the virulence of P. graminis f. sp. avena ...
DOI:
10.1094/PDIS-06-21-1239-RE

5. Characterization of wheat monogenic lines with known Sr genes and wheat cultivars for resistance to three new races of Puccinia graminis f. sp. tritici in China

Author:
Xian-xin WU; Chao-qun ZANG; Ya-zhao ZHANG; Yi-wei XU; Shu WANG; Tian-ya LI; Li GAO
Source:
Journal of integrative agriculture 2022 pp. -
ISSN:
2095-3119
Subject:
Puccinia graminis; aeciospores; agriculture; cultivars; fungi; genetic markers; mature plants; phenotype; seedlings; stem rust; wheat; China
Abstract:
... Wheat stem rust, caused by Puccinia graminis f. sp. tritici (Pgt), is a potentially devastating fungal disease of wheat worldwide. The present study was to evaluate the resistance of 42 wheat monogenic lines with known stem rust resistance (Sr) genes and 69 wheat cultivars to three new Pgt races (34C0MRGQM, 34C3MKGQM, and 34C6MTGSM) identified from aeciospores at the seedling and adult-plant stage ...
DOI:
10.1016/j.jia.2022.08.125

6. Chromosomal composition analysis and molecular marker development for the novel Ug99-resistant wheat–Thinopyrum ponticum translocation line WTT34

Author:
Guotang Yang; Willem H. P. Boshoff; Hongwei Li; Zacharias A. Pretorius; Qiaoling Luo; Bin Li; Zhensheng Li; Qi Zheng
Source:
Theoretical and applied genetics 2021 v.134 no.5 pp. 1587-1599
ISSN:
0040-5752
Subject:
DNA; Puccinia graminis; Thinopyrum ponticum; chromosomes; disease resistance; fluorescence; genetic markers; genomics; hybridization; polymerase chain reaction; resistance genes; seedlings; single nucleotide polymorphism; single nucleotide polymorphism arrays; stem rust; wheat; Uganda
Abstract:
... KEY MESSAGE: A novel Ug99-resistant wheat–Thinopyrum ponticum translocation line was produced, its chromosomal composition was analyzed and specific markers were developed. Stem rust caused by Puccinia graminis f. sp. tritici Eriks. & E. Henn (Pgt) has seriously threatened global wheat production since Ug99 race TTKSK was first detected in Uganda in 1998. Thinopyrum ponticum is near immune to Ug99 ...
DOI:
10.1007/s00122-021-03796-0

7. Identification of Quantitative Trait Loci for Leaf Rust and Stem Rust Seedling Resistance in Bread Wheat Using a Genome-Wide Association Study

Author:
Alibek Zatybekov; Yuliya Genievskaya; Aralbek Rsaliyev; Akerke Maulenbay; Gulbahar Yskakova; Timur Savin; Yerlan Turuspekov; Saule Abugalieva
Source:
Plants 2021 v.11 no.1 pp. -
ISSN:
2223-7747
Subject:
Puccinia graminis; Puccinia recondita; cultivars; disease resistance; genome-wide association study; genotyping; leaf rust; linear models; marker-assisted selection; mature plants; quantitative traits; seedlings; stem rust; wheat; Kazakhstan
Abstract:
... In recent years, leaf rust (LR) and stem rust (SR) have become a serious threat to bread wheat production in Kazakhstan. Most local cultivars are susceptible to these rusts, which has affected their yield and quality. The development of new cultivars with high productivity and LR and SR disease resistance, including using marker-assisted selection, is becoming an important priority in local breedi ...
DOI:
10.3390/plants11010074

8. Identification of Winter Habit Bread Wheat Landraces in the National Small Grains Collection with Resistance to Emerging Stem Rust Pathogen Variants

Author:
Tyler Gordon; Yue Jin; Samuel Gale; Matthew Rouse; Samuel Stoxen; Ruth Wanyera; Godwin Macharia; Mandeep Randhawa; Sridhar Bhavani; Gina Brown-Guedira; David Marshall; Ebrahiem Babiker; Harold Bockelman; J. Michael Bonman
Source:
Plant disease 2021 v.105 no.12 pp. 3998-4005
ISSN:
0191-2917
Subject:
Puccinia graminis; cultivars; landraces; major genes; pathogens; seedlings; soft dough stage; stem rust; virulence; wheat; Kenya; Minnesota
Abstract:
... Wheat stem rust caused by Puccinia graminis f. sp. tritici is a widespread and recurring threat to wheat production. Emerging P. graminis f. sp. tritici variants are rapidly overcoming major gene resistance deployed in wheat cultivars and new sources of race-nonspecific resistance are urgently needed. The National Small Grains Collection (NSGC) contains thousands of wheat landrace accessions that ...
DOI:
10.1094/PDIS-04-21-0743-RE

9. Mapping of Ug99 stem rust resistance in Canadian durum wheat

Author:
Sachin Kumar; Tom G. Fetch; Ron E. Knox; Asheesh K. Singh; John M. Clarke; Ron M. Depauw; Richard D. Cuthbert; Heather L. Campbell; Davinder Singh; Sridhar Bhavani; Curtis J. Pozniak; Brad Meyer; Fran R. Clarke
Source:
Canadian journal of plant pathology 2021 v.43 no.4 pp. 599-611
ISSN:
1715-2992
Subject:
Puccinia graminis; cultivars; disease severity; doubled haploids; durum wheat; genes; genomics; loci; mature plants; phenotypic variation; plant pathology; seedlings; stem rust; Canada; Kenya
Abstract:
... Stem rust, caused by Puccinia graminis f. sp. tritici (Pgt), has potential to cause major yield losses in durum wheat. Development of durum cultivars with improved resistance to stem rust is a sustainable option for effective control of this disease. This study was conducted to identify genomic regions associated with resistance to Ug99-derived Pgt races using a doubled haploid (DH) mapping popula ...
DOI:
10.1080/07060661.2020.1843073

10. Mapping stem rust resistance loci effective in Kenya in Canadian spring wheat (Triticum aestivum L.) lines ‘AAC Prevail’ and ‘BW961’

Author:
Firdissa E. Bokore; Richard D. Cuthbert; Colin W. Hiebert; Tom G. Fetch; Curtis J. Pozniak; Amidou N’Diaye; Yuefeng Ruan; Brad Meyer; Ron E. Knox
Source:
Canadian journal of plant pathology 2021 v.43 no.sup2 pp. S263
ISSN:
1715-2992
Subject:
Puccinia graminis; Triticum aestivum; alleles; disease severity; haploidy; plant pathology; seedlings; spring wheat; stem rust; Canada; Kenya
Abstract:
... This study was conducted to identify and map stem rust resistance genes in Canada Western Red Spring (CWRS) wheat variety ‘AAC Prevail’ and elite line ‘BW961ʹ. A population of 227 doubled haploid lines from ‘AAC Prevail’/‘BW961ʹ and parents were evaluated for their response to stem rust (Puccinia graminis) at Njoro, Kenya, from 2016–2019 and genotyped using a targeted genotyping by sequencing SeqS ...
DOI:
10.1080/07060661.2021.1966651

11. Multiple resistance genes to leaf and stem rust in Brazilian wheat varieties ‘BRS194’ and ‘Toropi’

Author:
Mônica Bossardi Coelho; Sandra Mansur Scagliusi; Brent Mccallum; Colin W. Hiebert; Márcia Soares Chaves; Sandra Patussi Brammer; Nadia Canali Lângaro; Tom Fetch
Source:
Canadian journal of plant pathology 2022 v.44 no.4 pp. 559-566
ISSN:
1715-2992
Subject:
Puccinia graminis; Puccinia recondita; alleles; doubled haploids; genetic markers; leaves; mature plants; pedigree; plant pathology; progeny; seedlings; stem rust; wheat
Abstract:
... Leaf (Puccinia triticina; Pt) and stem (Puccinia graminis tritici; Pgt) rust are important constraints to wheat production. The leaf and stem rust resistance in the Brazilian wheat varieties ‘Toropi’ and ‘BRS194’ was evaluated using a ‘Toropi/BRS194’ doubled-haploid (DH) population. Parents evaluated at the seedling stage with Pt race MCJ-HN displayed infection type (IT) = ;1 for ‘BRS194’ and IT = ...
DOI:
10.1080/07060661.2022.2027820

12. The Wheat Stem Rust (Puccinia graminis f. sp. tritici) Population from Washington Contains the Most Virulent Isolates Reported on Barley

Author:
Arjun Upadhaya; Sudha GC Upadhaya; Robert Brueggeman
Source:
Plant disease 2022 v.106 no.1 pp. 223-230
ISSN:
0191-2917
Subject:
Mahonia; Puccinia graminis; barley; introgression; resistance genes; seedlings; stem rust; virulence; wheat
Abstract:
... A diverse sexual population of wheat stem rust, Puccinia graminis f. sp. tritici, exists in the Pacific Northwest region of the United States because of the natural presence of Mahonia spp. that serves as alternate hosts to complete its sexual life cycle. The region appears to be a center of stem rust diversity in North America where novel virulence gene combinations can emerge that could overcome ...
DOI:
10.1094/PDIS-06-21-1195-RE

13. Assessments and perspectives on stem rust resistance in South African malting barley

Author:
R. Prins; B. J. Steffenson; A. J. Case; W. H. P. Boshoff; G. M. Agenbag; Z. A. Pretorius
Source:
Australasian plant pathology 2020 v.49 no.6 pp. 679-690
ISSN:
0815-3191
Subject:
Puccinia graminis; arid lands; assays; barley; genetic markers; germplasm; heterozygosity; infection; irrigation; malting barley; mature plants; mutation; plant pathology; prevalence; resistance genes; rye; seedlings; sequence analysis; stem rust; varieties; wheat; winter; South Africa
Abstract:
... The production of malting barley under dryland and irrigated environments in South Africa (SA) has increased recently, making it the second most important winter crop after wheat. To assess the potential vulnerability of adapted barleys from SA to wheat stem rust (caused by Puccinia graminis f. sp. tritici, Pgt, race PTKST) and rye stem rust (Puccinia graminis f. sp. secalis, Pgs, isolate UVPgs1), ...
DOI:
10.1007/s13313-020-00744-2

14. Association mapping of resistance to emerging stem rust pathogen races in spring wheat using genotyping‐by‐sequencing

Author:
Erena A. Edae; Matthew N. Rouse
Source:
The plant genome 2020 v.13 no.3 pp. e20050
ISSN:
1940-3372
Subject:
Puccinia graminis; Triticum aestivum; air temperature; chromosome mapping; chromosomes; emerging diseases; genetic resistance; genotyping by sequencing; phenotypic variation; plant disease resistance; plant pathogenic fungi; quantitative trait loci; resistance genes; seedlings; single nucleotide polymorphism; spring wheat; stem rust
Abstract:
... The identification and characterization of resistance genes should outpace the rapid emergence of new P. graminis f. sp. tritici races, such as TTRTF and TTKTT, to mitigate stem rust damage to wheat. The objective of the current study was to identify and characterize P. graminis f. sp. tritici race resistance association signals. A total of 250 North American spring wheat lines were evaluated at t ...
Handle:
10113/7222915
DOI:
10.1002/tpg2.20050

15. Characterization and mapping of stem rust resistance in McNair 701 winter wheat

Author:
Jyoti Saini Sharma; Tom Fetch; Colin W. Hiebert
Source:
Canadian journal of plant pathology 2020 v.42 no.3 pp. 390-395
ISSN:
1715-2992
Subject:
Puccinia graminis; Triticum; alleles; chromosomes; doubled haploids; fungi; pathogens; pathotypes; polymerase chain reaction; races; resistance genes; seedlings; single nucleotide polymorphism; single nucleotide polymorphism arrays; stem rust; virulence; winter wheat
Abstract:
... Wheat stem rust, caused by the fungal pathogen Puccinia graminis f. sp. tritici (Pgt), has re-emerged as an important disease of wheat. This pathogen continues to spread and evolve new virulent races. The international letter-code system of nomenclature has been used to pathotype these new emerging races, and gene SrMcN from ‘McNair 701' winter wheat, which is one of the differential lines, was ex ...
DOI:
10.1080/07060661.2019.1669076

16. Characterization of Wheat Monogenic Lines with Known Sr Genes and Wheat Lines with Resistance to the Ug99 Race Group for Resistance to Prevalent Races of Puccinia graminis f. sp. tritici in China

Author:
Xian Xin Wu; Qiu Jun Lin; Xin Yu Ni; Qian Sun; Rong Zhen Chen; Xiao Feng Xu; Yong Chun Qiu; Tian Ya Li
Source:
Plant disease 2020 v.104 no.7 pp. 1939-1943
ISSN:
0191-2917
Subject:
Puccinia graminis; Triticum; corn; crop production; cultivars; disease resistance; food security; fungi; genes; mature plants; plant breeding; races; seedlings; stem rust; wheat; China
Abstract:
... Wheat stem rust, caused by Puccinia graminis f. sp. tritici, is one of the most serious fungal diseases in wheat production, seriously threatening the global supply of wheat and endangering food security. The present study was conducted to evaluate wheat monogenic lines with known Sr genes to the most prevalent P. graminis f. sp. tritici races in China. In addition, wheat lines introduced from the ...
DOI:
10.1094/PDIS-12-19-2736-RE

17. First Report of Ug99 Race TTKTT of Wheat Stem Rust (Puccinia graminis f. sp. tritici) in Iraq

Author:
Kumarse Nazari; Emad M. Al-Maaroof; Ezgi Kurtulus; Handan Kavaz; Dave Hodson; Izzet Ozseven
Source:
Plant disease 2021 v.105 no.9 pp. 2719
ISSN:
0191-2917
Subject:
Agricultural Research Service; DNA; Puccinia graminis; cellophane; cultivars; dew; fluorescent lighting; gelatin; growth chambers; monitoring; oils; quarantine; rehydration; relative humidity; seedlings; stem rust; surveys; urediniospores; virulence; wheat; Ethiopia; Iran; Iraq; Kenya; Middle East; Morocco; Yemen
Abstract:
... A wheat rust survey was conducted in Iraq in 2019 and collected 27 stem rust (caused by Puccinia graminis Pers.:Pers. f. sp. tritici Erikks. & E. Henn.) samples. Seven samples were viable, and they were tested for races of P. graminis f. sp. tritici at the Regional Cereal Rust Research Center (RCRRC) in Izmir, Turkey, under strict quarantine procedures. Two 0.5-cm segments of each infected stem sh ...
DOI:
10.1094/PDIS-02-21-0404-PDN

18. A Genome-Wide Association Study of Resistance to Puccinia striiformis f. sp. hordei and P. graminis f. sp. tritici in Barley and Development of Resistant Germplasm

Author:
Javier Hernandez; Alicia del Blanco; Tanya Filichkin; Scott Fisk; Lynn Gallagher; Laura Helgerson; Brigid Meints; Chris Mundt; Brian Steffenson; Patrick Hayes
Source:
Phytopathology 2020 v.110 no.5 pp. 1082-1092
ISSN:
0031-949X
Subject:
Hordeum vulgare; Puccinia graminis; Puccinia striiformis; alleles; barley; chromosomes; disease resistance; genetic background; genome-wide association study; germplasm; introgression; mature plants; quantitative trait loci; races; resistance genes; seedlings; stem rust; stripe rust
Abstract:
... Stripe rust (incited by Puccinia striiformis f. sp. hordei) and stem rust (incited by P. graminis f. sp. tritici) are two of the most important diseases affecting barley. Building on prior work involving the introgression of the resistance genes rpg4/Rpg5 into diverse genetic backgrounds and the discovery of additional quantitative trait locus (QTLs) for stem rust resistance, we generated an array ...
DOI:
10.1094/PHYTO-11-19-0415-R

19. QTL mapping of resistance to Ug99 and other stem rust pathogen races in bread wheat

Author:
Silvina Baraibar; Richard García; Paula Silva; Bettina Lado; Ariel Castro; Lucía Gutiérrez; Monika Kavanová; Martín Quincke; Sridhar Bhavani; Mandeep S. Randhawa; Silvia Germán
Source:
Molecular breeding 2020 v.40 no.8 pp. 82
ISSN:
1380-3743
Subject:
Puccinia graminis; Triticum; chromosomes; cultivars; disease resistance; disease susceptibility; genetic markers; genomics; genotyping; germplasm; parents; pathogens; plant breeding; quantitative trait loci; races; resistance genes; seedlings; stem rust; wheat; Kenya; Uruguay
Abstract:
... Most wheat cultivars planted worldwide are susceptible to the stem rust Ug99 race group. To prepare for the potential spread of these races into South America, we aimed to identify genomic regions responsible for resistance to Ug99 race group in germplasm adapted to South America. Two RIL populations from a cross between a stem rust susceptible parent “Baguette 13” and resistant local parents “INI ...
DOI:
10.1007/s11032-020-01153-5

20. Rpg7: A New Gene for Stem Rust Resistance from Hordeum vulgare ssp. spontaneum

Author:
Eva Henningsen; Ahmad H. Sallam; Oadi Matny; Tamas Szinyei; Melania Figueroa; Brian J. Steffenson
Source:
Phytopathology 2021 v.111 no.3 pp. 548-558
ISSN:
0031-949X
Subject:
Puccinia graminis; alleles; barley; cultivars; dominant genes; fungi; genotyping by sequencing; landraces; loci; pathogens; pathotypes; phenotype; plant pathology; progeny; quantitative trait loci; resistance genes; rye; seedlings; single nucleotide polymorphism; stem rust; virulence; wheat; Africa; Minnesota
Abstract:
... Wheat stem rust (causal organism: Puccinia graminis f. sp. tritici) is an important fungal disease that causes significant yield losses in barley. The deployment of resistant cultivars is the most effective means of controlling this disease. Stem rust evaluations of a diverse collection of wild barley (Hordeum vulgare ssp. spontaneum) identified two Jordanian accessions (WBDC094 and WBDC238) with ...
DOI:
10.1094/PHYTO-08-20-0325-R

21. African wheat germplasm – a valuable resource for resistance to rust diseases

Author:
P. Kankwatsa; R. F. Park; D. Singh
Source:
Plant pathology 2019 v.68 no.7 pp. 1308-1319
ISSN:
0032-0862
Subject:
Puccinia graminis; Puccinia recondita; Puccinia striiformis f. tritici; Triticum; genes; genetic analysis; germplasm; inheritance (genetics); leaf rust; mature plants; pathotypes; seedlings; stem rust; stripe rust; wheat; Kenya
Abstract:
... Known and unknown genes conferring seedling and adult plant resistance (APR) to leaf rust, stem rust and stripe rust were detected either singly or in combination in a set of 136 African wheat genotypes using multi‐pathotype tests with characterized Australian Puccinia triticina (Pt), P. graminis f. sp. tritici (Pgt) and P. striiformis f. sp. tritici (Pst) pathotypes. Lines Beladi 132, IYN 68/9.44 ...
DOI:
10.1111/ppa.13063

22. First Report of Puccinia graminis f. sp. tritici Race PTKSK, a Variant of Wheat Stem Rust Race Ug99, in South Africa

Author:
T. Terefe; Z. A. Pretorius; B. Visser; W. H. P. Boshoff
Source:
Plant disease 2019 v.103 no.6 pp. 1421
ISSN:
0191-2917
Subject:
Puccinia graminis; Triticum aestivum; breeding lines; crop production; cultivars; genes; genetic similarity; greenhouses; microsatellite repeats; monitoring; races; seedlings; stem rust; surveys; temperature; triticale; virulence; wheat; Ethiopia; Kenya; South Africa; Yemen
Abstract:
... Stem rust caused by Puccinia graminis f. sp. tritici (Pgt) is an important disease of bread wheat (Triticum aestivum L.) in South Africa (SA). The frequent emergence of new Pgt races with increased virulence remains a major constraint when genetic control is considered. Monitoring the occurrence, distribution, and pathogenicity of Pgt is essential to quickly detect and track new races. During the ...
DOI:
10.1094/PDIS-11-18-1911-PDN

23. Identification of seedling resistance to stem rust in advanced wheat lines and varieties from Pakistan

Author:
Monsif Ur Rehman; Sam Gale; Gina Brown‐Guedira; Yue Jin; David Marshall; Lynda Whitcher; Sharon Williamson; Matthew Rouse; Javed Ahmad; Gulzar Ahmad; Irfan Ahmad Shah; Mahboob Ali Sial; Yahya Rauf; Atiq Ur Rehman Rattu; Javed Iqbal Mirza; Rick Ward; Majid Nadeem; Ghulam Ullah; Muhammad Imtiaz
Source:
Crop science 2020 v.60 no.2 pp. 804-811
ISSN:
0011-183X
Subject:
DNA; Puccinia graminis; Triticum aestivum; cultivars; greenhouses; seedlings; stem rust; wheat; Pakistan
Abstract:
... Stem rust is a major disease of wheat (Triticum aestivum L.) worldwide and new Puccinia graminis f. sp. tritici (Pgt) races including TTKSK (Ug99) pose a serious threat to wheat production. The protection of new varieties against Pgt races can be increased by identifying and combining several types of stem rust resistance genes (Sr). We screened a set of 707 wheat lines and cultivars against 11 Pg ...
DOI:
10.1002/csc2.20056

24. Introgression of rpg4/Rpg5 Into Barley Germplasm Provides Insights Into the Genetics of Resistance to Puccinia graminis f. sp. tritici Race TTKSK and Resources for Developing Resistant Cultivars

Author:
Javier Hernandez; Brian J. Steffenson; Tanya Filichkin; Scott P. Fisk; Laura Helgerson; Brigid Meints; Kelly J. Vining; David Marshall; Alicia del Blanco; Xianming Chen; Patrick M. Hayes
Source:
Phytopathology 2019 v.109 no.6 pp. 1018-1028
ISSN:
0031-949X
Subject:
Hordeum vulgare; Puccinia graminis; Puccinia hordei; Puccinia striiformis; alleles; barley; cultivars; doubled haploids; field experimentation; germplasm; growth habit; haplotypes; introgression; leaf rust; loci; mature plants; phenotype; quantitative trait loci; races; resistance genes; seedlings; single nucleotide polymorphism; stem rust; stripe rust; virulence; wheat; Kenya; United States
Abstract:
... Stem rust (incited by Puccinia graminis f. sp. tritici) is a devastating disease of wheat and barley in many production areas. The widely virulent African P. graminis f. sp. tritici race TTKSK is of particular concern, because most cultivars are susceptible. To prepare for the possible arrival of race TTKSK in North America, we crossed a range of barley germplasm—representing different growth habi ...
DOI:
10.1094/PHYTO-09-18-0350-R

25. Temperature‐sensitive wheat stem rust resistance gene Sr15 is effective against Puccinia graminis f. sp. tritici race TTKSK

Author:
L. Gao; E. M. Babiker; I. C. Nava; J. Nirmala; Z. Bedo; L. Lang; S. Chao; S. Gale; Y. Jin; J. A. Anderson; U. Bansal; R. F. Park; M. N. Rouse; J. M. Bonman; H. Bariana
Source:
Plant pathology 2019 v.68 no.1 pp. 143-151
ISSN:
0032-0862
Subject:
Puccinia graminis; allelism; breeding programs; crop production; haplotypes; marker-assisted selection; phenotype; plant pathogenic fungi; races; resistance genes; seedlings; stem rust; temperature; wheat
Abstract:
... The wheat stem rust fungus, Puccinia graminis f. sp. tritici (Pgt), race TTKSK and related races pose a serious threat to world wheat production. Knowing the effectiveness of wheat stem rust resistance (Sr) genes against Pgt race TTKSK is fundamental in mitigating this threat through resistance breeding. Sr15 was previously identified as being ineffective against Pgt race TTKSK. Here, multirace di ...
DOI:
10.1111/ppa.12928
CHORUS:
10.1111/ppa.12928

26. The value of field ratings of differential lines for pathotyping Puccinia graminis f. sp. tritici

Author:
W. H. P. Boshoff; C. M. Bender; Z. A. Pretorius
Source:
European journal of plant pathology 2019 v.155 no.1 pp. 349-352
ISSN:
0929-1873
Subject:
Puccinia graminis; Triticum; adults; mature plants; phenotype; plant response; resistance genes; seedlings; stem rust; virulence; wheat; South Africa
Abstract:
... Traditional race phenotyping of cereal rusts is based on the pathogenicity of field isolates on seedlings using a set of differential host lines. These lines are regularly planted in the field, often as part of trap nurseries. In trap nurseries the primary objective is to assess the occurrence of isolates with virulence or avirulence on key resistance genes. Although it is generally accepted that ...
DOI:
10.1007/s10658-019-01754-7

27. Characterization of Ethiopian Wheat Germplasm for Resistance to Four Puccinia graminis f. sp. tritici Races Facilitated by Single-Race Nurseries

Author:
Bekele Hundie; Bedada Girma; Zerihun Tadesse; Erena Edae; Pablo Olivera; Endale Hailu Abera; Worku Denbel Bulbula; Bekele Abeyo; Ayele Badebo; Gordon Cisar; Gina Brown-Guedira; Sam Gale; Yue Jin; Matthew N. Rouse
Source:
Plant disease 2019 v.103 no.9 pp. 2359-2366
ISSN:
0191-2917
Subject:
Puccinia graminis; Triticum; crop production; cultivars; durum wheat; genetic markers; genotype; germplasm; mature plants; pathogens; plant breeding; races; resistance genes; seedlings; stem rust; virulence; Ethiopia
Abstract:
... In Ethiopia, breeding rust resistant wheat cultivars is a priority for wheat production. A stem rust epidemic during 2013 to 2014 on previously resistant cultivar Digalu highlighted the need to determine the effectiveness of wheat lines to multiple races of Puccinia graminis f. sp. tritici in Ethiopia. During 2014 and 2015, we evaluated a total of 97 bread wheat and 14 durum wheat genotypes agains ...
DOI:
10.1094/PDIS-07-18-1243-RE

28. Characterization of stem, stripe and leaf rust resistance in Tajik bread wheat accessions

Author:
Mahbubjon Rahmatov; Munira Otambekova; Hafiz Muminjanov; Matthew N. Rouse; Mogens S. Hovmøller; Kumarse Nazari; Brian J. Steffenson; Eva Johansson
Source:
Euphytica 2019 v.215 no.3 pp. 55
ISSN:
0014-2336
Subject:
Puccinia graminis; Puccinia recondita; Puccinia striiformis f. tritici; breeding programs; chaff; cultivars; field experimentation; fungi; genetic markers; landraces; leaf rust; leaves; mature plants; necrosis; phenotype; plant breeding; races; resistance genes; seedlings; stem rust; stripe rust; strontium; virulence; wheat; Tajikistan
Abstract:
... Stem rust [causal organism: Puccinia graminis f. sp. tritici (Pgt)], stripe rust [Puccinia striiformis f. sp. tritici (Pst)], and leaf rust [Puccinia triticina (Pt)] are important fungal diseases of wheat in Central Asia and worldwide. Therefore, identification of seedling and adult plant resistance (APR) genes is of major importance for the national wheat breeding program in many countries. The o ...
DOI:
10.1007/s10681-019-2377-6

29. Diversity in Puccinia graminis f. sp. avenae and its impact on oat cultivar response in South Africa

Author:
W. H. P. Boshoff; B. Visser; T. Terefe; Z. A. Pretorius
Source:
European journal of plant pathology 2019 v.155 no.4 pp. 1165-1177
ISSN:
0929-1873
Subject:
Avena sativa; Puccinia graminis; cultivars; genetic markers; genetic variation; mature plants; oats; phenotype; races; seedlings; urediniospores; virulence; South Africa
Abstract:
... Puccinia graminis f. sp. avenae (Pga) samples were collected from cultivated oat (Avena sativa L.) in trial plots and commercial fields and from wild oat (Avena spp.) during the 2016 and 2017 seasons. Field samples were purified through selection of single pustule isolates and subsequent urediniospore increases using the susceptible cultivar Swan. For race phenotyping, a set of 12 international di ...
DOI:
10.1007/s10658-019-01845-5

30. Extended survival of Puccinia graminis f. sp. tritici urediniospores: implications for biosecurity and on‐farm management

Author:
P. Barua; M. P. You; K. L. Bayliss; V. Lanoiselet; M. J. Barbetti
Source:
Plant pathology 2018 v.67 no.4 pp. 799-809
ISSN:
0032-0862
Subject:
Puccinia graminis; aluminum; biosecurity; cotton; denim; disease outbreaks; host plants; jute; paper; pathotypes; plastics; risk; rubber; seedlings; stem rust; temperature; urediniospores; viability; washing; wheat
Abstract:
... Puccinia graminis f. sp. tritici (Pgt), the causal organism of stem rust, is of global importance across wheat‐growing countries. However, some epidemics commence without the obvious presence of ‘alternate’ or ‘green bridge’ hosts, suggesting urediniospores can survive in the absence of suitable host plants for many weeks. Testing a range of inert material types, including metals, plastics, fabric ...
DOI:
10.1111/ppa.12794

31. Genes for wheat stem rust resistance postulated in German cultivars and their efficacy in seedling and adult‐plant field tests

Author:
Kerstin Flath; Thomas Miedaner; Pablo D. Olivera; Matthew N. Rouse; Yue Jin
Source:
Plant breeding 2018 v.137 no.3 pp. 301-312
ISSN:
0179-9541
Subject:
Puccinia graminis; Triticum aestivum; cultivars; disease resistance; genotype; races; resistance genes; seedlings; spring wheat; stem rust; winter wheat; Germany
Abstract:
... Stem rust of wheat (caused by Puccinia graminis f.sp. tritici) gained high international attention in the last two decades, but does not occur regularly in Germany. Motivated by a regional epidemic in 2013, we analysed 15 spring and 82 winter wheat cultivars registered in Germany for their resistance to stem rust at the seedling stage and tested 79 of these winter wheat cultivars at the adult‐plan ...
DOI:
10.1111/pbr.12591

32. Introgression of a Novel Ug99-Effective Stem Rust Resistance Gene into Wheat and Development of Dasypyrum villosum Chromosome-Specific Markers via Genotyping-by-Sequencing (GBS)

Author:
Kaori Ando; Vandhana Krishnan; Sheri Rynearson; Matthew N. Rouse; Tatiana Danilova; Bernd Friebe; Deven See; Michael O. Pumphrey
Source:
Plant disease 2019 v.103 no.6 pp. 1068-1074
ISSN:
0191-2917
Subject:
Dasypyrum villosum; Puccinia graminis; Triticum aestivum; chromosomes; fluorescence; genomics; genotyping by sequencing; introgression; monosomics; resistance genes; screening; seedlings; stem rust; substitution lines; virulence; wheat; wild relatives
Abstract:
... Dasypyrum villosum is a wild relative of common wheat (Triticum aestivum L.) with resistance to Puccinia graminis f. tritici, the causal agent of stem rust, including the highly virulent race TTKSK (Ug99). In order to transfer resistance, T. durum–D. villosum amphiploids were initially developed and used as a bridge to create wheat–D. villosum introgression lines. Conserved ortholog set (COS) mark ...
DOI:
10.1094/PDIS-05-18-0831-RE

33. Phenotypic and genotypic description of Puccinia graminis f. sp. tritici race 2SA55 in South Africa

Author:
W. H. P. Boshoff; Z. A. Pretorius; T. G. Terefe; C. M. Bender; L. Herselman; G. J. Maree; B. Visser
Source:
European journal of plant pathology 2018 v.152 no.3 pp. 783-789
ISSN:
0929-1873
Subject:
Puccinia graminis; barley; breeding lines; cultivars; microsatellite repeats; pathogens; phenotype; races; seedlings; stem rust; virulence; wheat; South Africa
Abstract:
... Race 2SA55 of the wheat stem rust pathogen, Puccinia graminis f. sp. tritici, was described for the first time during 2000 in South Africa. This race is of particular interest as it was the first local report of increased virulence towards barley cultivars by wheat stem rust. Using three original accessions of 2SA55 from the rust collection of the University of the Free State, nine single pustule ...
DOI:
10.1007/s10658-018-1527-3

34. Resistance of Aegilops longissima to the Rusts of Wheat

Author:
Shuyi Huang; Brian J. Steffenson; Hanan Sela; Kathryn Stinebaugh
Source:
Plant disease 2018 v.102 no.6 pp. 1124-1135
ISSN:
0191-2917
Subject:
Aegilops longissima; Puccinia graminis; cost effectiveness; cultivars; disease control; geographical distribution; greenhouses; leaf rust; pathogens; races; resistance genes; seedlings; stem rust; stripe rust; virulence; wheat; Israel; United States
Abstract:
... Stem rust (caused by Puccinia graminis f. sp. tritici), leaf rust (P. triticina), and stripe rust (P. striiformis f. sp. tritici) rank among the most important diseases of wheat worldwide. The development of resistant cultivars is the preferred method of controlling rust diseases because it is environmentally benign and also cost effective. However, new virulence types often arise in pathogen popu ...
DOI:
10.1094/PDIS-06-17-0880-RE

35. Seedling resistance of selected Ethiopian bread and durum wheat lines against dominant stem rust races

Author:
Mekonnen Assefa; Fitsum Sileshi; Netsanet Bacha; Kitessa Gutu
Source:
Journal of plant pathology 2019 v.101 no.1 pp. 115-120
ISSN:
1125-4653
Subject:
Puccinia graminis; breads; breeding programs; cultivars; durum wheat; plant protection; races; seedlings; stem rust; urediniospores; Ethiopia
Abstract:
... Stem rust caused by Puccinia graminis f. sp. tritici (Pgt) is one of the most important diseases of wheat in Ethiopia. It has a reputation to cause yield losses reaching up to 100% on susceptible cultivars. A study was conducted to evaluate the infection responses of 34 bread and 20 durum wheat lines at the seedling stage against four major stem rust races; TKTTF (Digalu race), TTKSK (Ug99 race), ...

36. Validation and Marker-Assisted Selection of Stem Rust Resistance Gene Sr2 in Indian Wheat Using Gel-Based and Gel-Free Methods

Author:
Gautam Vishwakarma; Ravi Prakash Sanyal; Abhijit Shitre; D. A. Gadekar; Ajay Saini; Bikram Kishore Das
Source:
Journal of crop science and biotechnology 2019 v.22 no.4 pp. 309-315
ISSN:
1975-9479
Subject:
Puccinia graminis; Triticum; alleles; bacterial leaf streak; chlorosis; dyes; environmental factors; genetic background; genetic markers; inheritance (genetics); loci; marker-assisted selection; pathogens; phenotype; races; resistance genes; screening; seedlings; stem rust; wheat
Abstract:
... Stem rust resistance gene Sr2 is an important slow-rusting gene which has provided resistance against stem rust for many years. The Sr2 gene has durable resistance against all stem rust pathogens including the Ug99 group of races. It shows recessive inheritance and is linked with two phenotypic markers, Pseudo Black Chaff (PBC) and High Temperature-Induced Seedling Chlorosis (HTISC). However, dire ...
DOI:
10.1007/s12892-017-0083-0

37. Detection of Puccinia graminis f. sp. tritici Race RRTTF in Ecuador in 2016

Author:
C. W. Barnes; M. E. Ordóñez; S. Hambleton; K. Dadej; L. J. Szabo; T. Fetch
Source:
Plant disease 2018 v.102 no.2 pp. 448
ISSN:
0191-2917
Subject:
DNA; Puccinia graminis; crop production; disease outbreaks; ethanol; genotyping; greenhouses; hard red spring wheat; microsatellite repeats; phenotype; resistance genes; seedlings; single nucleotide polymorphism; stem rust; stems; urediniospores; virulence; Ecuador; Ethiopia; Manitoba; Middle East; Minnesota; Missouri; Ontario; Pakistan; Yemen
Abstract:
... Wheat stem rust is a devastating disease that has incited severe epidemics, resulting in extreme yield losses over the past century. Stem rust infection in plots of wheat line UC11075, known to carry the Sr38 resistance gene, was unusual and severe in February 2016 in a nursery at the Instituto Nacional de Investigaciones Agropecuarias Austro station near Cuenca, Ecuador. Stems with heavy infectio ...
DOI:
10.1094/PDIS-08-17-1161-PDN

38. Genetic Loci Conditioning Adult Plant Resistance to the Ug99 Race Group and Seedling Resistance to Races TRTTF and TTTTF of the Stem Rust Pathogen in Wheat Landrace CItr 15026

Author:
Babiker E. M.; Gordon T. C.; Bonman J. M.; Chao S.; Rouse M. N.; Jin Y.; Newcomb M.; Wanyera R.; Bhavani S.
Source:
Plant disease 2017 v.101 no.3 pp. 496-501
ISSN:
0191-2917
Subject:
Puccinia graminis; chromosome mapping; complementary genes; cultivars; dominant genes; doubled haploids; genotype; inbred lines; landraces; loci; mature plants; parents; pathogens; quantitative trait loci; races; seedlings; single nucleotide polymorphism; stem rust; wheat; Kenya
Abstract:
... Wheat landrace CItr 15026 previously showed adult plant resistance (APR) to the Ug99 stem rust race group in Kenya and seedling resistance to Puccinia graminis f. sp. tritici races QFCSC, TTTTF, and TRTTF. CItr 15026 was crossed to susceptible accessions LMPG-6 and Red Bobs, and 180 double haploid (DH) lines and 140 recombinant inbred lines (RIL), respectively, were developed. The 90K wheat iSelec ...
DOI:
10.1094/PDIS-10-16-1447-RE

39. Genetic Mapping of Stem Rust Resistance to Puccinia graminis f. sp. tritici Race TRTTF in the Canadian Wheat Cultivar Harvest

Author:
Hiebert Colin W.; Rouse Matthew N.; Nirmala Jayaveeramuthu; Fetch Tom
Source:
Phytopathology 2017 v.107 no.2 pp. 192-197
ISSN:
0031-949X
Subject:
Puccinia graminis; chromosome mapping; chromosomes; cultivars; doubled haploids; genes; genetic markers; microsatellite repeats; progeny; races; seedlings; single nucleotide polymorphism; spring wheat; stem rust; strontium; virulence; Africa; Canada; Mexico; United States
Abstract:
... Stem rust, caused by Puccinia graminis f. sp. tritici, is a destructive disease of wheat that can be controlled by deploying effective stem rust resistance (Sr) genes. Highly virulent races of P. graminis f. sp. tritici in Africa have been detected and characterized. These include race TRTTF and the Ug99 group of races such as TTKSK. Several Canadian and U.S. spring wheat cultivars, including the ...
DOI:
10.1094/PHYTO-05-16-0186-R

40. Genome-wide association study of stem rust resistance in a world collection of cultivated barley

Author:
Austin J. Case; Sridhar Bhavani; Godwin Macharia; Brian J. Steffenson
Source:
Theoretical and applied genetics 2018 v.131 no.1 pp. 107-126
ISSN:
0040-5752
Subject:
Puccinia graminis; barley; breeding; disease resistance; genome-wide association study; loci; mature plants; plant genetic resources; quantitative trait loci; races; resistance genes; seedlings; stem rust
Abstract:
... KEY MESSAGE: QTL conferring a 14–40% reduction in adult plant stem rust severity to multiple races of Pgt were found on chromosome 5H and will be useful in barley breeding. Stem rust, caused by Puccinia graminis f. sp. tritici (Pgt) is an important disease of barley. The resistance gene Rpg1 has protected the crop against stem rust losses for over 70 years in North America, but is not effective ag ...
DOI:
10.1007/s00122-017-2989-y
CHORUS:
10.1007/s00122-017-2989-y

41. Molecular Mapping of Stem Rust Resistance Loci Effective Against the Ug99 Race Group of the Stem Rust Pathogen and Validation of a Single Nucleotide Polymorphism Marker Linked to Stem Rust Resistance Gene Sr28

Author:
Babiker E. M.; Gordon T. C.; Chao S.; Rouse M. N.; Wanyera R.; Acevedo M.; Brown-Guedira G.; Bonman J. M.
Source:
Phytopathology 2017 v.107 no.2 pp. 208-215
ISSN:
0031-949X
Subject:
Puccinia graminis; chromosome mapping; dominant genes; doubled haploids; genotype; genotyping; inbred lines; landraces; loci; parents; pathogens; quantitative trait loci; races; seedlings; single nucleotide polymorphism; stem rust; wheat; Kenya
Abstract:
... Wheat landrace PI 177906 has seedling resistance to stem rust caused by Puccinia graminis f. sp. tritici races TTKSK, TTKST, and BCCBC and field resistance to the Ug99 race group. Parents, 140 recombinant inbred lines, and 138 double haploid (DH) lines were evaluated for seedling resistance to races TTKSK and BCCBC. Parents and the DH population were evaluated for field resistance to Ug99 in Kenya ...
DOI:
10.1094/PHYTO-08-16-0294-R

42. Characterization and genome-wide association mapping of resistance to leaf rust, stem rust and stripe rust in a geographically diverse collection of spring wheat landraces

Author:
Peace Kankwatsa; Davinder Singh; Peter C. Thomson; Ebrahiem M. Babiker; John M. Bonman; Maria Newcomb; Robert F. Park
Source:
Molecular breeding 2017 v.37 no.9 pp. 113
ISSN:
1380-3743
Subject:
Puccinia graminis; Puccinia recondita; Puccinia striiformis f. tritici; breeding; chromosome mapping; chromosomes; cultivars; gene pool; genes; genetic improvement; genetic resistance; genome-wide association study; landraces; leaf rust; mature plants; pathogens; pathotypes; seedlings; single nucleotide polymorphism; spring wheat; stem rust; stripe rust; virulence
Abstract:
... The challenge posed by rapidly changing wheat rust pathogens, both in virulence and in environmental adaptation, calls for the development and application of new techniques to accelerate the process of breeding for durable resistance. To expand the resistance gene pool available for germplasm improvement, a panel of 159 landraces plus old cultivars was evaluated for seedling and adult plant resist ...
DOI:
10.1007/s11032-017-0707-8

43. Genetic Characterization of Stem Rust Resistance in a Global Spring Wheat Germplasm Collection

Author:
Liangliang Gao; Matthew N. Rouse; Paul D. Mihalyov; Peter Bulli; Michael O. Pumphrey; James A. Anderson
Source:
Crop science 2017 v.57 no.5 pp. 2575-2589
ISSN:
0011-183X
Subject:
Puccinia graminis; Triticum aestivum; alleles; breeding; chromosome mapping; crop production; cultivars; disease resistance; fungi; genetic resistance; genotyping; germplasm conservation; linkage disequilibrium; loci; pathogens; phenotypic variation; quantitative trait loci; races; resistance genes; seedlings; single nucleotide polymorphism arrays; spring wheat; statistical models; stem rust
Abstract:
... Stem rust, caused by the fungus Puccinia graminis Pers. f. sp. tritici Ericks, is one of the most damaging diseases of wheat (Triticum aestivum L.). The recent emergence of the stem rust Ug99 race group poses a serious threat to world wheat production. Utilization of genetic resistance in cultivar development is the optimal way to control stem rust. Here, we report association mapping of stem rust ...
DOI:
10.2135/cropsci2017.03.0159

44. Genetics and mapping of seedling resistance to Ug99 stem rust in winter wheat cultivar Triumph 64 and differentiation of SrTmp, SrCad, and Sr42

Author:
Colin W. Hiebert; Mulualem T. Kassa; Curt A. McCartney; Frank M. You; Matthew N. Rouse; Pierre Fobert; Tom G. Fetch
Source:
Theoretical and applied genetics 2016 v.129 no.11 pp. 2171-2177
ISSN:
0040-5752
Subject:
Puccinia graminis; Triticum aestivum; chromosome mapping; chromosomes; cultivars; disease resistance; doubled haploids; genes; genetic markers; germplasm; marker-assisted selection; microsatellite repeats; races; seedlings; single nucleotide polymorphism; stem rust; virulence; winter wheat; Africa
Abstract:
... KEY MESSAGE : Resistance to Ug99 stem rust in Triumph 64 was conferred by SrTmp on chromosome arm 6DS and was mapped to the same position as SrCad and Sr42 , however, the three genes show functional differences. Stem rust, caused by Puccinia graminis f. sp. tritici (Pgt), is an important disease of wheat that can be controlled by effective stem rust resistance (Sr) genes. The emergence of virulent ...
DOI:
10.1007/s00122-016-2765-4
CHORUS:
10.1007/s00122-016-2765-4

45. Genome Targeted Introgression of Resistance to African Stem Rust from Aegilops sharonensis into Bread Wheat

Author:
Eitan Millet; Brian J. Steffenson; Renée Prins; Hanan Sela; Alexandra M. Przewieslik‐Allen; Zacharias A. Pretorius
Source:
The plant genome 2017 v.10 no.3 pp. eplantgenome2017.07.0061
ISSN:
1940-3372
Subject:
Aegilops sharonensis; DNA; Puccinia graminis; Triticum; alleles; chromatin; crop production; homozygosity; introgression; mature plants; mutants; plant pathogenic fungi; races; seedlings; single nucleotide polymorphism; single nucleotide polymorphism arrays; stem rust; wheat; wild relatives
Abstract:
... Many accessions of the wheat wild relative Sharon goatgrass (Aegilops sharonensis Eig., AES) are resistant to African races of the stem rust pathogen (i.e., Ug99 group races), which currently threaten wheat production worldwide. A procedure was designed to introgress the respective resistances to specific bread wheat genomes by producing plants homozygous for the A and B genomes and hemizygous for ...
DOI:
10.3835/plantgenome2017.07.0061

46. Identification and mapping of resistance to stem rust in the European winter wheat cultivars Spark and Rialto

Author:
Banchgize Getie; Davinder Singh; Urmil Bansal; James Simmonds; Cristobal Uauy; Robert F. Park
Source:
Molecular breeding 2016 v.36 no.8 pp. 114
ISSN:
1380-3743
Subject:
Puccinia graminis; Triticum aestivum; chromosomes; cultivars; disease resistance; disease severity; doubled haploids; genes; genetic markers; marker-assisted selection; mature plants; microsatellite repeats; phenotypic variation; quantitative trait loci; seedlings; stem rust; virulence; winter wheat
Abstract:
... A mapping population of 126 doubled haploid (DH) lines derived from a cross between the English winter wheat cultivars Spark and Rialto was evaluated for response to Puccinia graminis f. sp. tritici in the greenhouse and in artificially inoculated field plots at two locations over 3 years (2011, 2012 and 2013). Genetic analysis indicated the involvement of two seedling genes (Sr5 and Sr31, contrib ...
DOI:
10.1007/s11032-016-0537-0

47. Kenyan Isolates of Puccinia graminis f. sp. tritici from 2008 to 2014: Virulence to SrTmp in the Ug99 Race Group and Implications for Breeding Programs

Author:
Newcomb Maria; Olivera Pablo D.; Rouse Matthew N.; Szabo Les J.; Johnson Jerry; Gale Sam; Luster Douglas G.; Wanyera Ruth; Macharia Godwin; Bhavani Sridhar; Hodson David; Patpour Mehran; Hovmøller Mogens S.; Fetch Thomas G.; Jin Yue
Source:
Phytopathology 2016 v.106 no.7 pp. 729-736
ISSN:
0031-949X
Subject:
Puccinia graminis; breeding; breeding lines; genes; germplasm; monitoring; pathogens; races; seedlings; virulence; Kenya
Abstract:
... Frequent emergence of new variants in the Puccinia graminis f. sp. tritici Ug99 race group in Kenya has made pathogen survey a priority. We analyzed 140 isolates from 78 P. graminis f. sp. tritici samples collected in Kenya between 2008 and 2014 and identified six races, including three not detected prior to 2013. Genotypic analysis of 20 isolates from 2013 and 2014 collections showed that the new ...
DOI:
10.1094/PHYTO-12-15-0337-R

48. Multi‐Locus Mixed Model Analysis Of Stem Rust Resistance In Winter Wheat

Author:
Paul D. Mihalyov; Virginia A. Nichols; Peter Bulli; Matthew N. Rouse; Michael O. Pumphrey
Source:
The plant genome 2017 v.10 no.2 pp. eplantgenome2017.01.0001
ISSN:
1940-3372
Subject:
Puccinia graminis; Triticum aestivum; alleles; chromosome mapping; cost effectiveness; cultivars; fungi; genetic variation; genotyping; hexaploidy; introgression; linear models; loci; mining; phenotype; races; resistance genes; seedlings; single nucleotide polymorphism; stem rust; winter wheat
Abstract:
... Genome‐wide association mapping is a powerful tool for dissecting the relationship between phenotypes and genetic variants in diverse populations. With the improved cost efficiency of high‐throughput genotyping platforms, association mapping is a desirable method of mining populations for favorable alleles that hold value for crop improvement. Stem rust, caused by the fungus Puccinia graminis f. s ...
DOI:
10.3835/plantgenome2017.01.0001

49. Postulation of seedling stem rust resistance genes of Yunnan wheat cultivars in China

Author:
Li Tian-ya; Wu Xian-xin; Xu Xiao-feng; Wang Wan-lin; Cao Yuan-yin
Source:
Plant Protection Science v.52 no.4 pp. 242-249
ISSN:
1212-2580
Subject:
Puccinia graminis; cultivars; mutants; plant protection; seedlings; stem rust; virulence; wheat; China
Abstract:
... To determine stem rust resistance genes of wheat varieties in Yunnan province, 11 Chinese strains of Puccinia graminis f.sp. tritici with different virulence and 1 artificial mutant strain were used in 110 wheat varieties. The results indicated that among the 45 Sr genes, Sr31, Sr5, SrTmp, Sr30, Sr36, Sr8a, Sr11, Sr24, Sr29, Sr34, Sr9e, Sr26, Sr38, Sr47, and SrTt3 were characterised in 55 wheat va ...
DOI:
10.17221/137/2015-pps

50. Sources of Stem Rust Resistance in Wheat-Alien Introgression Lines

Author:
Rahmatov Mahbubjon; Rouse Matthew N.; Steffenson Brian J.; Andersson Staffan C.; Wanyera Ruth; Pretorius Zacharias A.; Houben Andreas; Kumarse Nazari; Bhavani Sridhar; Johansson Eva
Source:
Plant disease 2016 v.100 no.6 pp. 1101-1109
ISSN:
0191-2917
Subject:
Leymus mollis; Puccinia graminis; Secale cereale; Thinopyrum junceiforme; chromosome translocation; chromosomes; crop production; genes; genetic markers; greenhouses; in situ hybridization; introgression; nucleic acid hybridization; pathogens; races; seedlings; stem rust; substitution lines; virulence; wheat
Abstract:
... Stem rust is one of the most devastating diseases of wheat. Widely virulent races of the pathogen in the Ug99 lineage (e.g., TTKSK) are threatening wheat production worldwide; therefore, there is an urgent need to enhance the diversity of resistance genes in the crop. The objectives of this study were to identify new sources of resistance in wheat-alien introgression derivatives from Secale cereal ...
DOI:
10.1094/PDIS-12-15-1448-RE