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1. Race and Virulence Analysis of Puccinia triticina in China During 2011 to 2013

Author:
Zhang, Lin; Xiao, Yu; Gao, Ying; Zhao, Na; An, Yajuan; Yang, Wenxiang; Meng, Qingfang; Yan, Hongfei; Liu, Daqun
Source:
Plant disease 2020 v.104 no.8 pp. 2095-2101
ISSN:
0191-2917
Subject:
isogenic lines,   etc   ; Puccinia recondita; Triticum; breeding programs; evolution; fungi; leaf rust; plant breeding; races; resistance genes; virulence; wheat; China;     Show all 13 Subjects
Abstract:
... Wheat leaf rust, caused by Puccinia triticina, is a common fungal disease of wheat in China. In order to identify races and determine the individual virulence of isolates in different wheat-growing regions in China, leaf rust samples collected from 18 provinces in 2011 to 2013 were tested on 37 Thatcher near-isogenic lines each carrying a different single leaf rust resistance gene. A total of 158 ...
DOI:
10.1094/PDIS-01-20-0047-RE

2. Bt maize genotypes do not harm Trichogramma pretiosum when exposed to vegetative and reproductive structures

Author:
Spagnol, Daniel; Castilhos, Rodolfo Vargas; Pasini, Rafael Antonio; Grützmacher, Anderson Dionei; Afonso da Rosa, Ana Paula Schneid
Source:
Biocontrol science and technology 2020 v.30 no.5 pp. 480-484
ISSN:
1360-0478
Subject:
isogenic lines,   etc   ; Bacillus thuringiensis; Trichogramma pretiosum; Zea mays; bacterial proteins; bioassays; corn; genotype; leaves; parasitism; pollen; transgenic plants;     Show all 12 Subjects
Abstract:
... We evaluated the effects of Bt maize genotypes expressing different Bt proteins on Trichogramma pretiosum. The laboratory bioassays consisted of exposing T. pretiosum to leaf, stem, and pollen of Bt maize genotypes and isogenic lines. The reduction on parasitism was used to classify the treatments according to the IOBC scale. In all bioassays, the reduction on parasitism was lower than 30%, and th ...
DOI:
10.1080/09583157.2020.1728230

3. Soil strength influences wheat root interactions with soil macropores

Author:
Atkinson, Jonathan A.; Hawkesford, Malcolm J.; Whalley, William R.; Zhou, Hu; Mooney, Sacha J.
Source:
Plant, cell and environment 2020 v.43 no.1 pp. 235-245
ISSN:
0140-7791
Subject:
isogenic lines,   etc   ; Triticum; computed tomography; macropores; nutrients; root growth; rooting; roots; soil compaction; soil strength; subsoil; wheat;     Show all 12 Subjects
Abstract:
... Deep rooting is critical for access to water and nutrients found in subsoil. However, damage to soil structure and the natural increase in soil strength with depth, often impedes root penetration. Evidence suggests that roots use macropores (soil cavities greater than 75 μm) to bypass strong soil layers. If roots have to exploit structures, a key trait conferring deep rooting will be the ability t ...
DOI:
10.1111/pce.13659
PubMed:
31600410
PubMed Central:
PMC7027857

4. Identify and Delimitate Urban Hotspot Areas Using a Network-Based Spatiotemporal Field Clustering Method

Author:
Xia, Zelong; Li, Hao; Chen, Yuehong; Liao, Weisheng
Source:
ISPRS international journal of geo-information 2019 v.8 no.8
ISSN:
2220-9964
Subject:
isogenic lines,   etc   ; case studies; standard deviation; traffic; travel;     Show all 5 Subjects
Abstract:
... Pick-up and drop-off events of taxi trajectory data contain rich information about residents’ travel activities and road traffic. Such data have been widely applied in urban hotspot detection in recent years. However, few studies have attempted to delimitate the urban hotspot scope using taxi trajectory data. On this basis, the current study firstly introduces a network-based spatiotemporal ...
DOI:
10.3390/ijgi8080344

5. Analysis of Cotton Chromosome 11 and 14 Root-Knot Nematode Resistance Quantitative Trait Loci Effects on Root-Knot Nematode Postinfection Development, Egg Mass Formation, and Fecundity

Author:
Wubben, Martin J.; Gaudin, Amanda G.; McCarty, Jack C.; Jenkins, Johnie N.
Source:
Phytopathology 2020 v.110 no.4 pp. 927-932
ISSN:
0031-949X
Subject:
isogenic lines,   etc   ; Gossypium hirsutum; Meloidogyne incognita; adults; cotton; egg masses; eggs; fecundity; females; juveniles; loci; quantitative trait loci; root-knot nematodes;     Show all 13 Subjects
Abstract:
... Cotton (Gossypium hirsutum) resistance to root-knot nematode (RKN) (Meloidogyne incognita) is controlled by quantitative trait loci (QTLs) on chromosomes 11 (CHR11) and 14 (CHR14). The individual contributions of these QTLs to resistance are not completely understood. We developed near isogenic lines susceptible at both loci (null), having CHR11 or CHR14 alone, and having both QTLs (CHR11/CHR14). ...
DOI:
10.1094/PHYTO-09-19-0370-R

6. The spread of nitrogen compounds in an active groundwater exchange zone within a valuable natural ecosystem

Author:
Podlasek, Anna; Bujakowski, Filip; Koda, Eugeniusz
Source:
Ecological engineering 2020 v.146 pp. 105746
ISSN:
0925-8574
Subject:
isogenic lines,   etc   ; ammonium; aquifers; basins; conservation areas; ecosystems; floodplains; groundwater; groundwater flow; hydrologic models; landfills; nitrates; nitrogen; nitrogen compounds; precision agriculture; rivers; soil water; Poland;     Show all 18 Subjects
Abstract:
... The aim of the paper is to present a methodical approach for developing a hydrodynamic model of groundwater flow and transport of nitrogen compounds in the area covered by the precision farming system. The study area covers the part of the Vistula River floodplain terrace near Warsaw (Poland), in the vicinity of nature reserves: Wyspy Zawadowskie, Wyspy Świderskie and Łęgi Oborskie. The components ...
DOI:
10.1016/j.ecoleng.2020.105746

7. Identification and characterization of new mutations in mitochondrial cytochrome b that confer resistance to bifenazate and acequinocyl in the spider mite Tetranychus urticae

Author:
Fotoukkiaii, Seyedeh Masoumeh; Tan, Zoë; Xue, Wenxin; Wybouw, Nicky; Van Leeuwen, Thomas
Source:
Pest management science 2020 v.76 no.3 pp. 1154-1163
ISSN:
1526-498X
Subject:
isogenic lines,   etc   ; Panonychus citri; Tetranychus urticae; bifenazate; cytochrome b; fungi; inheritance (genetics); insecticide resistance; mitochondria; mitochondrial genome; mutation; phenotype; resistance management; sex ratio;     Show all 14 Subjects
Abstract:
... BACKGROUND: In spider mites, mutations in the mitochondrial cytochrome b Qₒ pocket have been reported to confer resistance to the Qₒ inhibitors bifenazate and acequinocyl. In this study, we surveyed populations of the two‐spotted spider mite Tetranychus urticae for mutations in cytochrome b, linked newly discovered mutations with resistance and assessed potential pleiotropic fitness costs. RESULTS ...
DOI:
10.1002/ps.5628

8. Dynamic Structural Stand Density Management Diagrams for even-aged natural stands and plantations

Author:
Stankova, Tatiana V.; Diéguez-Aranda, Ulises
Source:
Forest ecology and management 2020 v.458 pp. 117733
ISSN:
0378-1127
Subject:
isogenic lines,   etc   ; Betula pubescens; Pinus radiata; Pinus sylvestris; Quercus robur; biomass; equations; even-aged stands; forest stands; models; plantations; prediction; stand density;     Show all 13 Subjects
Abstract:
... A forest stand model that is able to account for individual stand characteristics and uses this information for state prediction, growth and yield projection and for management decisions at individual-stand level can be expected to possess the best properties and be of the highest utility. The aim of our study was to combine the advantages of the graphically presented whole-stand models called Sta ...
DOI:
10.1016/j.foreco.2019.117733

9. Validation of QTL for grain weight using MAS-derived pairs of NILs in bread wheat (Triticum aestivum L.)

Author:
Kumari, Supriya; Mir, Reyazul Rouf; Tyagi, Sandhya; Balyan, Harindra Singh; Gupta, Pushpendra Kumar
Source:
Journal of plant biochemistry and biotechnology 2019 v.28 no.3 pp. 336-344
ISSN:
0971-7811
Subject:
isogenic lines,   etc   ; Triticum aestivum; alleles; genotype; marker-assisted selection; phenotypic variation; quantitative trait loci; wheat;     Show all 8 Subjects
Abstract:
... Near isogenic lines (NILs) are ideal material for a variety of genetic studies including validation of specific QTL. In the present study, eight pairs of NILs for grain weight were developed, seven in the background of Raj3765, and one in the background of K9107. For this purpose, marker-assisted selection (MAS) was used for the transfer of three grain weight QTL (QGw.ccsu-1A.2, QGw.ccsu-1A.3 and ...
DOI:
10.1007/s13562-018-0485-3

10. Fine-Mapping of qTGW1.2a, a Quantitative Trait Locus for 1000-Grain Weight in Rice

Author:
Wenhui, Wang; Linlin, Wang; Yujun, Zhu; Yeyang, Fan; Jieyun, Zhuang
Source:
Rice science 2019 v.26 no.4 pp. 220-228
ISSN:
1672-6308
Subject:
isogenic lines,   etc   ; additive effect; chromosomes; genes; grain yield; heterozygosity; homozygosity; phenotypic variation; quantitative trait loci; rice;     Show all 10 Subjects
Abstract:
... Thousand-grain weight (TGW) is a key component of grain yield in rice. This study was conducted to validate and fine-map qTGW1.2a, a quantitative trait locus for grain weight and grain size previously located in a 933.6-kb region on the long arm of rice chromosome 1. Firstly, three residual heterozygotes (RHs) were selected from a BC2F11 population of the indica rice cross Zhenshan 97 (ZS97)///ZS9 ...
DOI:
10.1016/j.rsci.2019.04.004

11. How should crop water-use efficiency be analyzed? A warning about spurious correlations

Author:
Gilbert, Matthew E.; Hernandez, M. Isabel
Source:
Field crops research 2019 v.235 pp. 59-67
ISSN:
0378-4290
Subject:
isogenic lines,   etc   ; data collection; evapotranspiration; grain yield; prediction; statistical analysis; surveys; variance; water use efficiency;     Show all 9 Subjects
Abstract:
... Water-use efficiency (WUE) is a common concept in the agronomy literature. Although definitions of WUE vary, the most common relates the ratio of grain yield (GY) to evapotranspiration (ET) e.g. WUEö=öGY/ET or WUEö=öET/GY. But using this metric has issues, as it is a ratio and is often analyzed relative to one of its components. Here it is shown that plotting WUE versus GY or ET causes spurious co ...
DOI:
10.1016/j.fcr.2019.02.017

12. Identification of Leaf Rust Resistance Genes in Bread Wheat Cultivars from Ethiopia

Author:
Gebrewahid, Takele Weldu; Zhang, Pei-pei; Yao, Zhan-jun; Li, Zai-feng; Liu, Da-qun
Source:
Plant disease 2020 v.104 no.9 pp. 2354-2361
ISSN:
0191-2917
Subject:
isogenic lines,   etc   ; Puccinia recondita; Triticum aestivum; cultivars; disease resistance; field experimentation; greenhouses; growing season; leaf rust; mature plants; new variety; plant breeding; plant response; races; resistance genes; seedlings; wheat; China; Ethiopia;     Show all 19 Subjects
Abstract:
... Wheat leaf rust, caused by Puccinia triticina (Pt), is a widespread disease of bread wheat worldwide. In the present study, 50 wheat cultivars from Ethiopia and 34 differential lines, mostly near-isogenic lines (NILs) in the background of Thatcher with known resistance genes to leaf rust (Lr), were tested with 14 Pt races in the greenhouse to postulate Lr genes at the seedling stage. Field experim ...
DOI:
10.1094/PDIS-12-19-2606-RE

13. Development of an Evaluation System for Fusarium Resistance in Wheat Grains and Its Application in Assessment of the Corresponding Effects of Fhb1

Author:
Gong, Xuan; He, Xinyao; Zhang, Yuhui; Li, Lei; Sun, Zhengxi; Bai, Guihua; Singh, Pawan Kumar; Li, Tao
Source:
Plant disease 2020 v.104 no.8 pp. 2210-2216
ISSN:
0191-2917
Subject:
isogenic lines,   etc   ; Fusarium; Fusarium head blight; Triticum; developmental stages; disease resistance; florets; fungal diseases of plants; genes; genotype; humidity; in vitro studies; in vivo studies; plant breeding; plant pathogenic fungi; scanning electron microscopy; seed development; seeds; starch granules; temperature; wheat;     Show all 21 Subjects
Abstract:
... Fusarium head blight (FHB) caused by Fusarium species is a globally important wheat disease. Host resistance to FHB is composed of multiple mechanisms, including resistance to initial infection (type I), disease spread (type II), toxin accumulation (type III), kernel infection (type IV), and yield loss (type V), of which the last three have been less studied. Traditionally, the Fusarium-damaged ke ...
DOI:
10.1094/PDIS-12-19-2584-RE

14. Characterization of Phn15.1, a Newly Identified Phytophthora nicotianae Resistance QTL in Nicotiana tabacum

Author:
Ma, Justin M.; Heim, Crystal B.; Humphry, Matt; Nifong, Jessica M.; Lewis, Ramsey S.
Source:
Plant disease 2020 v.104 no.6 pp. 1638-1646
ISSN:
0191-2917
Subject:
isogenic lines,   etc   ; Nicotiana tabacum; Phytophthora nicotianae; alleles; breeding programs; burley tobacco; crop production; cultivars; disease resistance; diterpenoids; flue-cured tobacco; genetic markers; genetic resistance; genetic variation; immunity; introgression; leaves; pathogens; plant breeding; quantitative trait loci; single nucleotide polymorphism;     Show all 21 Subjects
Abstract:
... Phytophthora nicotianae is an oomycete that causes black shank, one of the most economically important diseases affecting tobacco production worldwide. Identification and introgression of novel genetic variability affecting partial genetic resistance to this pathogen is important because of the increased durability of partial resistance over time as compared with genes conferring immunity. A previ ...
DOI:
10.1094/PDIS-10-19-2257-RE

15. Functional characterization and fitness cost of spinosad-resistant alleles in Ceratitis capitata

Author:
Guillem-Amat, Ana; Ureña, Enric; López-Errasquín, Elena; Navarro-Llopis, Vicente; Batterham, Philip; Sánchez, Lucas; Perry, Trent; Hernández-Crespo, Pedro; Ortego, Félix
Source:
Journal of pest science 2020 v.93 no.3 pp. 1043-1058
ISSN:
1612-4758
Subject:
isogenic lines,   etc   ; Ceratitis capitata; Citrus; Drosophila melanogaster; alleles; crops; females; genetic background; homozygosity; insecticide resistance; lambda-cyhalothrin; loss-of-function mutation; malathion; males; mutants; nicotinic receptors; planning; resistance management; spinosad; Spain;     Show all 20 Subjects
Abstract:
... The sustainability of control programs for the Mediterranean fruit fly, Ceratitis capitata, for citrus crops in Spain has been threatened by the development of resistance to malathion and lambda-cyhalothrin in recent years. Spinosad is widely used without apparent loss of efficacy. However, a highly resistant strain, JW-100s, has been obtained after laboratory selection. Spinosad resistance in JW- ...
DOI:
10.1007/s10340-020-01205-x

16. Fertility restoration of maize CMS‐C altered by a single amino acid substitution within the Rf4 bHLH transcription factor

Author:
Jaqueth, Jennifer S.; Hou, Zhenglin; Zheng, Peizhong; Ren, Ruihua; Nagel, Bruce A.; Cutter, Gary; Niu, Xiaomu; Vollbrecht, Erik; Greene, Thomas W.; Kumpatla, Siva P.
Source:
Theplant journal 2020 v.101 no.1 pp. 101-111
ISSN:
0960-7412
Subject:
isogenic lines,   etc   ; CRISPR-Cas systems; Zea mays; amino acid substitution; amino acids; chromosomes; corn; cytoplasmic male sterility; gene editing; genes; hybrids; inbreeding; mitochondria; models; molecular cloning; nuclear localization signals; sequence analysis; transcription factors;     Show all 18 Subjects
Abstract:
... Type C cytoplasmic male sterility (CMS‐C) is the most commonly used form of CMS in maize hybrid seed production. Restorer of fertility 4 (Rf4), the major fertility restorer gene of CMS‐C, is located on chromosome 8S. To positionally clone Rf4, a large F3 population derived from a cross between a non‐restorer and restorer (n = 5104) was screened for recombinants and then phenotyped for tassel ferti ...
DOI:
10.1111/tpj.14521

17. Mycovirus-Induced Hypervirulence of Leptosphaeria biglobosa Enhances Systemic Acquired Resistance to Leptosphaeria maculans in Brassica napus

Author:
Shah, Unnati A.; Kotta-Loizou, Ioly; Fitt, Bruce D. L.; Coutts, Robert H. A.
Source:
Molecular plant-microbe interactions 2020 v.33 no.1 pp. 98-107
ISSN:
0894-0282
Subject:
isogenic lines,   etc   ; Brassica napus; Leptosphaeria; Phoma stem canker disease; Plenodomus biglobosus; Plenodomus lingam; amino acid metabolism; carbohydrates; chitinase; double-stranded RNA; gene expression regulation; growing season; leaves; messenger RNA; mycoviruses; screening; systemic acquired resistance; transcription factors; transcriptome; virulence; winter;     Show all 21 Subjects
Abstract:
... Phoma stem canker (blackleg) is one of the most important diseases of winter oilseed rape (Brassica napus) worldwide and is caused by a complex that comprises at least two species: Leptosphaeria maculans and L. biglobosa. Screening a panel of field Leptosphaeria isolates from B. napus for the presence of mycoviruses revealed the presence of a novel double-stranded RNA quadrivirus in L. biglobosa a ...
DOI:
10.1094/MPMI-09-19-0254-R

18. Dynamics of leaf and spikelet primordia initiation in wheat as affected by Ppd-1a alleles under field conditions

Author:
Ochagavía, Helga; Prieto, Paula; Savin, Roxana; Griffiths, Simon; Slafer, GustavoA
Source:
Journal of experimental botany 2018 v.69 no.10 pp. 2621-2631
ISSN:
1460-2431
Subject:
isogenic lines,   etc   ; alleles; flowering; growing season; introgression; leaves; spikelets; wheat;     Show all 8 Subjects
Abstract:
... Wheat adaptation is affected by Ppd genes, but the role of these alleles in the rates of leaf and spikelet initiation has not been properly analysed. Twelve near isogenic lines (NILs) combining Ppd-1a alleles from different donors introgressed in A, B, and/or D genomes were tested under field conditions during two growing seasons together with the wild type, Paragon. Leaf initiation rate was unaff ...
DOI:
10.1093/jxb/ery104
PubMed:
29562296
PubMed Central:
PMC5920321

19. Interspecific Polymorphism of DEP1 Genes and the Spike Shape in Wheats

Author:
Vavilova, V. Yu.; Konopatskaia, I. D.; Blinov, A. G.; Goncharov, N. P.
Source:
Russian journal of genetics 2019 v.55 no.7 pp. 908-913
ISSN:
1022-7954
Subject:
isogenic lines,   etc   ; 5' untranslated regions; Aegilops tauschii; Triticum aestivum subsp. spelta; Triticum turgidum subsp. durum; alleles; durum wheat; mutants; mutation;     Show all 9 Subjects
Abstract:
... In the present study, we performed an analysis of DEP1 gene sequences in ten accessions of Triticum macha Decapr. et Menabde, T. antiquorum Heer ex Udacz., T. sphaerococcum Perciv., mutants of common and durum wheat, and one semicompactoid accession of the D genome donor for common wheat Aegilops tauschii Coss. The comparative analysis showed that all studied accessions, except for the near isogen ...
DOI:
10.1134/S1022795419070147

20. Natural post-flowering photoperiod and photoperiod sensitivity: Roles in yield-determining processes in soybean

Author:
Nico, Magalí; Miralles, Daniel Julio; Kantolic, Adriana Graciela
Source:
Field crops research 2019 v.231 pp. 141-152
ISSN:
0378-4290
Subject:
isogenic lines,   etc   ; Glycine max; alleles; crop production; cropping systems; field experimentation; genotype; growing season; photoperiod; pods; production technology; racemes; soybeans;     Show all 13 Subjects
Abstract:
... Promising yield-determining responses to artificial photoperiod manipulation during post-flowering phases have been identified in soybean [Glycine max (L.) Merrill]. These responses enhance resource capture as a result of changes in phase duration, and resource use efficiency as a result of changes in node production and pod development, alleviating intra-node pod interference. This work aims to e ...
DOI:
10.1016/j.fcr.2018.10.019