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1. Genetic Studies of Resistance to Helminthosporium turcicum in Maize by Means of Chromosomal Translocations

Author:
Merle T. Jenkins; Alice L. Robert; William R. Findley
Source:
Agronomy journal 1957 v.49 no.4 pp. 197-201
ISSN:
0002-1962
Subject:
Helminthosporium; agronomy; chromosomes; corn; inbred lines; leaf blight
Abstract:
... SynopsisReciprocal translocations were utilized to identify the chromosome arms associated with resistance to the leaf blight caused by Helminthosporium turcicum. Tests involving resistant Mo21A indicated 8 arms of this inbred line were associated with resistance and 2 associated with susceptibility. The short arm of chromosome 1 was associated with resistance in some tests and susceptibility in o ...
DOI:
10.2134/agronj1957.00021962004900040009x

2. Evaluating the Breeding Potential of Inbred Lines of Corn Resistant to the Leaf Blight Caused by Helminthosporium Turcicum

Author:
Merle T. Jenkins; Alice L. Robert
Source:
Agronomy journal 1959 v.51 no.2 pp. 93-96
ISSN:
0002-1962
Subject:
Helminthosporium; corn; crossing; inbred lines; leaf blight
Abstract:
... SynopsisThirty blight resistant inbred lines differed significantly in their blight reaction as lines, in their reaction in crosses with 3 susceptible tester lines, and in the performance of the F₂ progenies from these crosses. There also were highly significant differences in blight reaction among the 3 testers and for the interaction of lines ✕ testers, both for the F₁ crosses and for the F₂ pro ...
DOI:
10.2134/agronj1959.00021962005100020010x

3. Inheritance of Resistance to Helminthosporium Blight, Crown Rust Race 216, and Stem Rust Race 7A in Oats

Author:
George W. Rivers
Source:
Agronomy journal 1959 v.51 no.10 pp. 601-603
ISSN:
0002-1962
Subject:
Helminthosporium; agronomy; blight; crown rust; homozygosity; oats; progeny; stem rust
Abstract:
... SynopsisThe inheritance of resistance to oat crown rust race 216 was found to be monogenic with susceptibility dominant, and resistance to Helminthosporium blight was controlled by a single pair of recessive genes. Homozygous early generation progeny were obtained with combined resistance to Helminthosporium blight and crown rust race 216. Resistance to stem rust race 7A was found to be inherited ...
DOI:
10.2134/agronj1959.00021962005100100010x

4. Gene Action Conditioning Resistance to Northern Leaf Blight in Maize

Author:
G. R. Hughes; A. L. Hooker
Source:
Crop science 1971 v.11 no.2 pp. 180-184
ISSN:
0011-183X
Subject:
Helminthosporium; Zea mays; additive gene effects; corn; epistasis; genes; genetic variance; leaf blight; phenotype; recurrent selection
Abstract:
... SummaryThe nature of gene action conditioning the quantitative type of resistance in maize (Zea mays L.) to Northern leaf blight caused by Helminthosporium turcicum Pass. was studied in crosses between four Australian resistant inbred lines (D21, HB, 21H, and 25) and three tester inbred lines (susceptibles H10 and 701, and moderately resistant Oh43). Populations composed of the P₁, P₂, F₁, F₂, BC₁ ...
DOI:
10.2135/cropsci1971.0011183X001100020005x

5. Helminthosporium. secondary metabolites, southern leaf blight of corn, and biology

Author:
Hesseltine, C.W.; Ellis, J.J.; Shotwell, O.L.
Source:
Journal of agricultural and food chemistry 1971 v.19 no.4 pp. 707-717
ISSN:
0021-8561
Subject:
Zea mays; biological nomenclature; biosynthesis; leaf blight; microbial physiology; Bipolaris maydis; corn; secondary metabolites; mycotoxins; plant pathogenic fungi; pathogenesis; Helminthosporium; Glomerella tucumanensis
Abstract:
... The recent outbreak of the southern corn blight is caused by race T of Helminthosporium maydis, a species in the fungus genus Helminthosporium which consists of about 175 species, worldwide in distribution, on grasses. Three species of Helminthosporium - H. maydis, H. turcicum, and H. carbonum - attack corn and are placed in the genus Bipolaris. The southern corn blight fungus has an asexual stage ...
Handle:
10113/31254
DOI:
10.1021/jf60176a020

6. Reaction of Reed Canarygrass Genotypes to the Leafspot Pathogens Stagonospora foliicola and Helminthosporium catenarium

Author:
K. E. Zeiders; R. T. Sherwood
Source:
Crop science 1977 v.17 no.4 pp. 651-653
ISSN:
0011-183X
Subject:
Helminthosporium; Phalaris arundinacea; Stagonospora; disease severity; forage; leaf area; leaves
Abstract:
... Our objectives were to determine the range of reactions to tawny blotch (caused by Stagonospora foliicola (Bres.) Bubak) and Helminthosporium leafspot (caused by H. cateranium Drechs.) among diverse genotypes of reed canarygrass (Phalaris arundinacea L.), to assess the relationships among lesion size, lesion frequency, leaf size, and tawny blotch severity ratings, and to assess the feasibility of ...
DOI:
10.2135/cropsci1977.0011183X001700040044x

7. Survey for zearalenone, aflatoxin, and ochratoxin in U.S. grain sorghum from 1975 and 1976 crops

Author:
Shotwell, O.L.; Bennett, G.A.; Goulden, M.L.; Plattner, R.D.; Hesseltine, C.W.
Source:
Journal of the Association of Offical Analytical Chemists 1980 v.63 no.4 pp. 922-926
ISSN:
0004-5756
Subject:
stored products; ochratoxins; Aspergillus flavus; Fusarium graminearum; Alternaria; aflatoxins; zearalenone; feed contamination; grain sorghum; Sorghum bicolor; Helminthosporium; Arizona; Illinois; Nebraska; Missouri; California; Kansas; Texas; Oklahoma; Arkansas; New Mexico
Abstract:
... Grain sorghum samples (197) from 10 [USA] states harvested in 1975 and 1976 were analyzed for zearalenone, aflatoxin and ochratoxin by the Eppley procedure. Zearalenone was detected in 56 samples (28%) at levels of 200-6900 ng/g (the detection limit was 100-200 ng/g). Zearalenone identity was confirmed in representative samples by gas chromatography-mass spectroscopy of the trimethylsilyl derivati ...
Handle:
10113/26883

8. Plant Disease in an Old Field Ecosystem Irrigated with Municipal Waste Water

Author:
Lynn Epstein; Kimberly Ditz; G. R. Safir
Source:
Journal of environmental quality 1982 v.11 no.1 pp. 65-68
ISSN:
0047-2425
Subject:
Alternaria alternata; Coleosporium; Elymus repens subsp. repens; Erysiphe cichoracearum; Helminthosporium; Pantoea agglomerans; Pectobacterium carotovorum subsp. atrosepticum; Phyllachora; Solidago canadensis; Stemphylium; cultivars; ecosystems; foliar diseases; fungi; irrigated farming; leaves; municipal wastewater; plant pathogens; seedlings; wastewater irrigation
Abstract:
... During 1978 and 1979, plant disease on foliage was assessed in an old field dominated by goldenrod (Solidago canadensis and S. graminifolia) and quackgrass (Agropyron repens) and irrigated with waste water. Plant pathogens abundant in waste-water-irrigated areas included, Coleosporium asterum, Erysiphe cichoracearum, Phyllachora graminis, and Helminthosporium sp.; such fungi reportedly alternate t ...
DOI:
10.2134/jeq1982.00472425001100010016x

9. Viable fungi in corn dust

Author:
Hill, R.A.; Wilson, D.M.; Burg, W.R.; Shotwell, O.L.
Source:
Applied and environmental microbiology 1984 v.47 no.1 pp. 84-87
ISSN:
0099-2240
Subject:
grain elevators; corn; dust emissions; Penicillium; Aspergillus; Cladosporium; Alternaria; Helminthosporium; Fusarium; microbial contamination; feed processing
Abstract:
... Numbers of viable fungal propagules in corn dusts in southern Georgia were estimated during various farm and grain elevator operations in 1979, 1980, and 1982. A six-stage Andersen sampler for viable microbial particles was used to sample the dusts with various agar media. The most abundant fungi in corn dusts were species of yeasts: Aspergillus, Penicillium, Cladosporium, Alternaria. Helminthospo ...
Handle:
10113/28373
PubMed:
6696425
PubMed Central:
PMC239616

10. Incidence of maize ear rot in western Kenya

Author:
Kedera, C.J.; Ochor, T.E.; Ochieng, J.A.W.; Kamidi, R.E.
Source:
International journal of pest management 1994 v.40 no.2 pp. 117-120
ISSN:
0967-0874
Subject:
harvest date; Fusarium graminearum; Helminthosporium; Zea mays; seeds; Rhizopus; corn ears; fungal diseases of plants; Fusarium fujikuroi; Stenocarpella; genotype; genetic variation; incidence; Penicillium; Kenya
DOI:
10.1080/09670879409371867

11. RFLP and RAPD analyses in the identification and differentiation of isolates of the leaf spot fungus Corynespora cassiicola

Author:
Silva, W.P.K.; Multani, D.S.; Deverall, B.J.; Lyon, B.R.
Source:
Australian journal of botany 1995 v.43 no.6 pp. 609-618
ISSN:
0067-1924
Subject:
restriction fragment length polymorphism; random amplified polymorphic DNA technique; nucleases; ribosomal DNA; genetic distance; Corynespora cassiicola; internal transcribed spacers; plant pathogenic fungi; genetic variation; pathotypes; Helminthosporium; genetic markers; Queensland
DOI:
10.1071/BT9950609

12. Organization and expression of the double-stranded RNA genome of Helminthosporium victoriae 190S virus, a totivirus infecting a plant pathogenic filamentous fungus

Author:
Huang, S.; Ghabrial, S.A.
Source:
Proceedings of the National Academy of Sciences of the United States of America 1996 v.93 no.22 pp. 12541-12546
ISSN:
0027-8424
Subject:
coat proteins; stop codon; complementary DNA; open reading frames; mycoviruses; amino acid sequences; Bipolaris victoriae; start codon; RNA; molecular conformation; DNA-directed RNA polymerase
Abstract:
... The complete nucleotide sequence, 5178 bp, of the totivirus Helminthosporium victoriae 190S virus (Hv190SV) double-stranded RNA, was determined. Computer-assisted sequence analysis revealed the presence of two large overlapping ORFs; the 5'-proximal large ORF (ORF1) codes for the coat protein (CP) with a predicted molecular mass of 81 kDa, and the 3'-proximal ORF (ORF2), which is in the--1 frame r ...
DOI:
10.1073/pnas.93.22.12541
PubMed:
8901618
PubMed Central:
PMC38028

13. A fatty acid synthase gene in Cochliobolus carbonum required for production of HC-toxin, cyclo(D-prolyl-L-alanyl-D-alanyl-L-2-amino-9,10-epoxi-8-oxodecanoyl)

Author:
Ahn, J.H.; Walton, J.D.
Source:
Molecular plant-microbe interactions 1997 v.10 no.2 pp. 207-214
ISSN:
0894-0282
Subject:
messenger RNA; Zea mays; biosynthesis; structural genes; open reading frames; amino acid sequences; gene expression; mycotoxins; Bipolaris zeicola; introns; virulence; acyltransferases
Abstract:
... The fungal maize pathogen Cochliobolus carbonum produces a phytotoxic and cytostatic cyclic peptide, HC-toxin, of structure cyclo(D-prolyl-L-alanyl-D-alanyl-L-Aeo), in which Aeo stands for 2-amino-9,10-epoxi-8-oxodecanoic acid. Here we report the isolation of a gene, TOXC, that is present only in HC-toxin-producing (Tox2+) fungal strains. TOXC is present in most Tox2+ strains in three functional c ...
DOI:
10.1094/MPMI.1997.10.2.207
PubMed:
9057326

14. Cloning and mapping of a putative barley NADPH-dependent HC-toxin reductase

Author:
Han, F.; Kleinhofs, A.; Kilian, A.; Ullrich, S.E.
Source:
Molecular plant-microbe interactions 1997 v.10 no.2 pp. 234-239
ISSN:
0894-0282
Subject:
interspecific variation; messenger RNA; loci; complementary DNA; Hordeum vulgare; linkage groups; metabolic detoxification; amino acid sequences; oxidoreductases; mycotoxins; chromosome mapping; Bipolaris zeicola; nucleotide sequences; gene expression
Abstract:
... The NADPH-dependent HC-toxin reductase (HCTR), encoded by Hm1 in maize, inactivates HC-toxin produced by the fungus Cochliobolus carbonum, and thus confers resistance to the pathogen. The fact that C. carbonum only infects maize (Zea mays) and is the only species known to produce HC-toxin raises the question: What are the biological functions of HCTR in other plant species? An HCTR-like enzyme may ...
DOI:
10.1094/MPMI.1997.10.2.234
PubMed:
9057330

15. Dendryphion penicillatum and Pleospora papaverqacea, destructive seedborne pathogens and potential mycoherbicides for Papaver somniferum

Author:
O'Neill, N.R.; Jennings, J.C.; Bailey, B.A.; Farr, D.F.
Source:
Phytopathology 2000 v.90 no.7 pp. 691-698
ISSN:
0031-949X
Subject:
Papaver bracteatum; seedlings; inoculum density; plant pathogenic fungi; Papaver somniferum; conidia; biological resistance; mycoherbicides; pathogenesis; pathotypes; host range; cultivars; pathogenicity; genetic variation; Helminthosporium; Sweden; Iran; India; Colombia; Afghanistan; Venezuela; Maryland
DOI:
10.1094/PHYTO.2000.90.7.691

16. Evaluation of infection processes and resulting disease caused by Dendryphion penicillatum and Pleospora papaveracea on Papaver somniferum

Author:
Bailey, B.A.; Apel-Birkhold, P.C.; O'Neill, N.R.; Plaskowitz, J.; Alavi, S.; Jennings, J.C.; Anderson, J.D.
Source:
Phytopathology 2000 v.90 no.7 pp. 699-709
ISSN:
0031-949X
Subject:
Papaver somniferum; Papaver bracteatum; Helminthosporium; plant pathogenic fungi; pathogenesis; necrosis; hyphae; spore germination; inoculum density; developmental stages; ultrastructure; appressoria; conidia; weed control; cultivars; genetic variation; pathogenicity; mycoherbicides; biological resistance; Maryland
DOI:
10.1094/PHYTO.2000.90.7.699
PubMed:
18944488

17. Identification of Tropical and Temperate Maize Populations Having Favorable Alleles for Disease Resistance

Author:
Aldi Kraja; John W. Dudley; Donald G. White
Source:
Crop science 2000 v.40 no.4 pp. 948-954
ISSN:
0011-183X
Subject:
Bipolaris maydis; Bipolaris zeicola; Cercospora zeae-maydis; Exserohilum; Helminthosporium; Puccinia sorghi; Zea mays; alleles; backcrossing; corn; disease resistance; genetic improvement; germplasm; hybrids; inbreeding; leaf blight; leaf spot; races; selfing; statistics; Corn Belt region
Abstract:
... A possible use of nonelite germplasm is as a source of alleles for disease resistance. Our objective was to determine the value of tropical and temperate maize (Zea mays L.) germplasm accessions as sources of alleles to improve disease resistance of the Corn Belt hybrid FR1064 × LH185. A group of tropical populations and hybrids from the Germplasm Enhancement of Maize Project (GEM) crossed to eith ...
DOI:
10.2135/cropsci2000.404948x

18. Incidence of Pyrenophora avenae Ito et Kurib. in Europe between 1994–1998, and the varietal reaction of oats to it

Author:
J. Šebesta; B. Zwatz; H.W. Roderick; L. Corazza; M.H. Starzyk; L. Reitan; I.G. Loskutov
Source:
Plant Protection Science v.37 no.3 pp. 91-95
ISSN:
1212-2580
Subject:
Avena sativa; Helminthosporium; Pyrenophora avenae; Russia; Yugoslavia; disease resistance; fungi; leaf blotch; oats; pathogens; plant protection; Austria; Belarus; Bulgaria; Czech Republic; Estonia; Finland; Hungary; Italy; Norway; Poland
Abstract:
... In Europe in the period 1994–1998, Helminthosporium leaf blotch disease was recorded in Austria, Belarus, Bulgaria, the Czech Republic, Estonia, Finland, Hungary, Italy, Norway, Poland, Russia and Yugoslavia. There was large variation in the quantitative reaction of oat (Avena sativa L.) genotypes to this disease, ranging from a disease resistance index (DRI) of 71 with cv. Kasadra to 16 with cv. ...
DOI:
10.17221/8370-pps

19. Rare sesquiterpenes from the algicolous fungus Drechslera dematioidea

Author:
Osterhage, C.; Konig, G.M.; Holler, U.; Wright, A.D.
Source:
Journal of natural products 2002 v.65 no.3 pp. 306-313
ISSN:
0163-3864
Subject:
Plasmodium falciparum; sesquiterpenoids; antifungal properties; Drechslera; secondary metabolites; Rhodophyta; enzyme inhibitors; spectral analysis; chemical constituents of plants; antimalarials; chemical structure; antibacterial properties; Spain; Mediterranean Sea
DOI:
10.1021/np010092l
PubMed:
11908970

20. The role of potassium in sustaining yields in a long-term rice-wheat experiment in the Indo-Gangetic Plains of Nepal

Author:
Regmi, A.P.; Ladha, J.K.; Pasuquin, E.; Pathak, H.; Hobbs, P.R.; Shrestha, L.L.; Gharti, D.B.; Duveiller, E.
Source:
Biology and fertility of soils 2002 v.36 no.3 pp. 240-247
ISSN:
0178-2762
Subject:
rice; Oryza sativa; wheat; green manures; crop yield; potassium chloride; plant pathogenic fungi; application rate; ammonium phosphates; blight; long term experiments; fungal diseases of plants; Triticum aestivum; soil fertility; potassium; nutrient requirements; nutrient availability; cattle manure; urea; Helminthosporium; Sesbania cannabina; Nepal
Abstract:
... A long-term soil fertility experiment (1988-1999) at the Regional Agricultural Research Station, Bhairhawa, Nepal, was analysed to determine: (1) how long the yields of rice (Oryza sativa L.) and wheat (Triticum aestivum L.) can be sustained without K but with N and N+P (NP) applied with or without farmyard manure (FYM) and green manure, and (2) the impact of K application on yields. Starting from ...
DOI:
10.1007/s00374-002-0525-x

21. Allelochemical potential of Callicarpa acuminata

Author:
Anaya, A.L.; Mata, R.; Sims, J.J.; Gonzalez-Coloma, A.; Cruz-Ortega, R.; Guadano, A.; Hernandez-Bautista, B.E.; Midland, S.L.; Rios, G.; Gomez-Pompa, A.
Source:
Journal of chemical ecology 2003 v.29 no.12 pp. 2761-2776
ISSN:
0098-0331
Subject:
Callicarpa; chemical constituents of plants; secondary metabolites; allelochemicals; bioactive properties; antifeedants; Leptinotarsa decemlineata; plant pathogenic fungi
Abstract:
... The allelochemical potential of Callicarpa acuminata (Verbenaceae) was investigated by using a biodirected fractionation study as part of a long-term project to search for bioactive compounds among the rich biodiversity of plant communities in the Ecological Reserve El Eden, Quintana Roo, Mexico. Aqueous leachate, chloroform-methanol extract, and chromatographic fractions of the leaves of C. acumi ...
PubMed:
14969362

22. Identification of AFLP markers closely linked to the rhm gene for resistance to southern corn leaf blight in maize by using bulked segregant analysis

Author:
Cai, H.W.; Gao, Z.S.; Yuyama, N.; Ogawa, N.
Source:
Molecular genetics and genomics 2003 v.269 no.3 pp. 299-303
ISSN:
1617-4615
Subject:
Zea mays; amplified fragment length polymorphism; genetic resistance; alleles; leaf blight; Bipolaris maydis; corn; chromosome mapping; plant pathogenic fungi; disease resistance; gene segregation; nucleotide sequences; genetic markers
PubMed:
12684877

23. Selection Index for Improving Helminthosporium Leaf Blight Resistance, Maturity, and Kernel Weight in Spring Wheat

Author:
R. C. Sharma; E. Duveiller
Source:
Crop science 2003 v.43 no.6 pp. 2031-2036
ISSN:
0011-183X
Subject:
Bipolaris sorokiniana; Helminthosporium; Pyrenophora tritici-repentis; Triticum aestivum; biomass; cultivars; disease severity; early selection; genotype; grain yield; heading; leaf blight; seeds; selection index; spring wheat; Nepal
Abstract:
... Helminthosporium leaf blight [HLB, caused by spot blotch, Cochliobolus sativus (Ito & Kuribayashi) Drechs. ex Dastur, and/or tan spot, Pyrenophora tritici-repentis (Died.) Drechs.], is the most serious disease constraint to wheat (Triticum aestivum L.) yields in the warmer plain areas of South Asia. A selection strategy is needed to identify early maturing, HLB-resistant genotypes, given that most ...
DOI:
10.2135/cropsci2003.2031

24. Effects of seed treatment and foliar fungicides on Helminthosporium leaf blight and on performance of wheat in warmer growing conditions

Author:
Sharma-Poudyal, D.; Duveiller, E.; Sharma, R.C.
Source:
Phytopathologische Zeitschrift 2005 v.153 no.7-8 pp. 401-408
ISSN:
0931-1785
Subject:
seed germination; Helminthosporium; grain crops; Pyrenophora tritici-repentis; leaf blight; fungal diseases of plants; fungicides; wheat; disease control; Triticum aestivum; grain yield; plant pathogenic fungi; chemical control; seed treatment; Bipolaris sorokiniana
DOI:
10.1111/j.1439-0434.2005.00992.x

25. Identification of Quantitative Trait Loci for Resistance to Southern Leaf Blight and Days to Anthesis in a Maize Recombinant Inbred Line Population

Author:
Balint-Kurti P. J.; Krakowsky M. D.; Jines M. P.; Robertson L. A.; Molnár T. L.; Goodman M. M.; Holland J. B.
Source:
Phytopathology 2006 v.96 no.10 pp. 1067-1071
ISSN:
0031-949X
Subject:
quantitative trait loci; Zea mays; plant breeding; flowering; genetic resistance; fungal diseases of plants; Bipolaris maydis; corn; pathogenicity; plant pathogenic fungi; disease resistance; phenotypic variation; heritability
Abstract:
... A recombinant inbred line population derived from a cross between the maize lines NC300 (resistant) and B104 (susceptible) was evaluated for resistance to southern leaf blight (SLB) disease caused by Cochliobolus heterostrophus race O and for days to anthesis in four environments (Clayton, NC, and Tifton, GA, in both 2004 and 2005). Entry mean and average genetic correlations between disease ratin ...
Handle:
10113/2164
DOI:
10.1094/PHYTO-96-1067
PubMed:
18943494

26. Resistance conferred by the Ht1 gene in sweet corn infected by mixtures of virulent and avirulent Exserohilum turcicum

Author:
Pataky, J.K.; Ledencan, T.
Source:
Plant disease 2006 v.90 no.6 pp. 771-776
ISSN:
0191-2917
Subject:
fungal diseases of plants; leaf blight; disease severity; Setosphaeria turcica; Exserohilum; Helminthosporium; plant pathogenic fungi; corn; Zea mays; host plants; hybrids; plant genetics; disease resistance
Abstract:
... The Ht1 gene conveys a chlorotic-lesion resistant reaction in corn infected by avirulent races of Exserohilum turcicum, the causal agent of northern corn leaf blight (NCLB). The widespread deployment of the Ht1 gene in field corn grown in North America since the 1960s resulted in an increased frequency of E. turcicum race 1, which is virulent against the Ht1 gene. The objective of this study was t ...
DOI:
10.1094/PD-90-0771

27. A comparative study on the airborne fungi in Athens, Greece, by viable and non-viable sampling methods

Author:
Pyrri, Ioanna; Kapsanaki-Gotsi, Evangelia
Source:
Aerobiologia 2007 v.23 no.1 pp. 3-15
ISSN:
0393-5965
Subject:
Sclerotinia; Stemphylium; Pithomyces; Torula; trapping; Trichoderma; Scopulariopsis; Puccinia; mycobiota; Botrytis; Penicillium; Nigrospora; Mucor; Pestalotiopsis; conidia; Chrysonilia; air; agar; Ulocladium; Curvularia; teliospores; Alternaria; Stachybotrys; ascospores; Drechslera; glass; yeasts; Periconia; Epicoccum; Erysiphales; Aspergillus; basidiospores; Fusarium; Rhizopus; samplers; Ustilaginales; Myxogastrea; airborne microorganisms; Paecilomyces; Aureobasidium; Helminthosporium; Cladosporium; Greece
Abstract:
... Airborne fungi were studied in the city of Athens using two complementary methods in which 136 concurrent samplings were carried out during the 12-month period from January until December 1998. A portable Burkard air sampler for agar plates was used for trapping the culturable portion of the mycobiota. Nineteen genera of fungi were identified and assessed in terms of total numbers and fluctuations ...
DOI:
10.1007/s10453-006-9039-6

28. Biological Control Agent for Rice Weeds from Protoplast Fusion between Curvularia Lunata and Helminthosporium Gramineum

Author:
Zhang Z. B.; Burgos N. R.; Zhang J. P.; Yu L. Q.
Source:
Weed science 2007 v.55 no.6 pp. 599-605
ISSN:
0043-1745
Subject:
rice; Oryza sativa; plant pathogenic fungi; extracts; weed control; conidia; cell walls; biological control agents; mycoherbicides; mycelium; random amplified polymorphic DNA technique; protoplast fusion; Curvularia; strain differences; weeds; enzyme activity; sporulation; phytotoxicity; Helminthosporium; culture filtrates; British Columbia
Abstract:
... The advancement of biological weed control is limited by the slow development of effective, broader-spectrum biological control agents. Protoplast fusion was carried out between the Helminthosporium gramineum subsp. echinochloae (HGE) strain, HM1, and Curvularia lunata (CL) to breed new strains with improved biocontrol efficiency. The HM1 strain was derived from HGE by ultraviolet (UV) treatment. ...
DOI:
10.1614/WS-07-061.1

29. Calcium ion promotes successful penetration of powdery mildew fungi into barley cells

Author:
Kobayashi, Issei; Yamada, Masako; Kobayashi, Yuhko
Source:
Journal of general plant pathology 2007 v.73 no.6 pp. 399-404
ISSN:
1345-2630
Subject:
Blumeria graminis; Erysiphe pisi; Helminthosporium; barley; calcium; calmodulin; coleoptiles; conidia; fungi; pathogens; powdery mildew; resistance to penetration
Abstract:
... To determine whether Ca²⁺ promotes powdery mildew penetration, Ca²⁺-treated barley coleoptiles were inoculated with conidia of pathogenic and nonpathogenic fungi. Penetration efficiency of the pathogenic powdery mildew Blumeria graminis was enhanced by Ca²⁺ treatment, but that of the necrotrophic pathogen Helminthosporium sp. remained unaffected. Similarly, when actin-dependent penetration resista ...
DOI:
10.1007/s10327-007-0040-x

30. Evaluation of crude toxin and metabolite produced by Helminthosporium gramineum Rabenh for the control of rice sheath blight in paddy fields

Author:
Duan, G.; Zhang, Z.; Zhang, J.; Zhou, Y.; Yu, L.; Yuan, Q.
Source:
Crop protection 2007 v.26 no.7 pp. 1036-1041
ISSN:
0261-2194
Subject:
fungal antagonists; phytotoxins; rice; blight; Oryza sativa; fungal diseases of plants; Thanatephorus cucumeris; disease control; plant pathogenic fungi; Helminthosporium; metabolites
Abstract:
... The metabolites of Helminthosporium gramineum Rabenh were tested for their antagonistic effects towards Rhizoctonia solani (AG-1-IA), the rice sheath blight fungus. The culture filtrate and EtOAc extract of the culture filtrate and mycelia (termed as crude toxin in this study) of H. gramineum significantly reduced the in vitro growth of R. solani. The biologically active metabolite isolated from c ...
DOI:
10.1016/j.cropro.2006.09.014

31. Heteroconium and Pirozynskiella n. gen., with comments on conidium transseptation

Author:
S.J. Hughes
Source:
Mycologia 2007 v.99 no.4 pp. 628-638
ISSN:
1557-2536
Subject:
Antennulariella; Helminthosporium; Hyphomycetes; anamorphs; bark; conidia; hyphae; neotypes; new genus; sooty molds; wood
Abstract:
... Heteroconium citharexyli, the type species of this genus, is illustrated and redescribed as a sooty mold bearing acropetal chains of conidia showing a basifugal sequence of septation. Heteroconium neriifoliae, H. glutinosa and the Heteroconium synanamorph of Antennulariella concinna are congeneric. The latter species is neotypified, illustrated and described. Pirozynskiella new genus, typified by ...
DOI:
10.1080/15572536.2007.11832557

32. Lyophilization as a method for pathogens long term preservation

Author:
Mirjana B. Milošević; Slađana S. Medić-Pap; Maja V. Ignjatov; Dragana N. Petrović
Source:
Zbornik Matice srpske za prirodne nauke 2007 v.2007 no.113 pp. 203-210
ISSN:
0352-4906
Subject:
Fusarium graminearum; Helminthosporium; Pseudomonas syringae; freeze drying; host plants; plant development; researchers; vegetables; viability
Abstract:
... Lyophilization (freeze-drying) is one of the most suitable methods used for a long term preservation of pathogens. The aim of this paper was the application of lyophilization for storage of three significant plant pathogens: Fusarium graminearum, Helminthosporium gramineum, and Pseudomonas syringae pv. gylicinea, respectively. The plant material was collected continuously (during a four year perio ...
DOI:
10.2298/ZMSPN0713203M

33. Sucrose-Mediated Priming of Plant Defense Responses and Broad-Spectrum Disease Resistance by Overexpression of the Maize Pathogenesis-Related PRms Protein in Rice Plants

Author:
Gómez-Ariza, J.; Campo, S.; Rufat, M.; Estopa, M.; Messeguer, J.; San Segundo, B.; Coca, M.
Source:
Molecular plant-microbe interactions 2007 v.20 no.7 pp. 832-842
ISSN:
0894-0282
Subject:
Oryza sativa; rice; pathogenesis-related proteins; gene expression; protein synthesis; resistance mechanisms; sucrose; plant pathogenic fungi; plant pathogenic bacteria; genes; transgenic plants; Zea mays; corn; disease resistance; temporal variation; disease course; transcription (genetics)
Abstract:
... Expression of pathogenesis-related (PR) genes is part of the plant's natural defense response against pathogen attack. The PRms gene encodes a fungal-inducible PR protein from maize. Here, we demonstrate that expression of PRms in transgenic rice confers broad-spectrum protection against pathogens, including fungal (Magnaporthe oryzae, Fusarium verticillioides, and Helminthosporium oryzae) and bac ...
DOI:
10.1094/MPMI -20-7-0832.
PubMed:
17601170

34. Lignicolous dematiaceous hyphomycetes in Japan: five new records for Japanese mycoflora, and proposals of a new name, Helminthosporium magnisporum, and a new combination, Solicorynespora foveolata

Author:
Shirouzu, Takashi; Harada, Yukio
Source:
Mycoscience 2008 v.49 no.2 pp. 126-131
ISSN:
1340-3540
Subject:
Corynespora; Helminthosporium; Hyphomycetes; fungi; new combination; nomen novum; Japan
Abstract:
... Through investigations on dematiaceous hyphomycetes on dead ligneous plant substrata, mainly in northern Japan, five species were newly added to the Japanese mycoflora: Corynespora trichiliae, Diplococcium stoveri, Ellisembia folliculata, Monodictys melanopa, and Paratomenticola lanceolata. Morphological characters with line drawings and cultural characteristics of these anamorphic fungi are repor ...
DOI:
10.1007/s10267-007-0399-8

35. Fungal Spore Germination Inhibition by Alkaloids Dehydrocorydalmine and Oxyberberine

Author:
Amitabh Singh; Sarita Singh; Sushma Singh; Tryambak Singh; Virendra Singh; Vidya Pandey; Udai Singh
Source:
Journal of plant protection research 2009 v.49 no.3 pp. 287-289
ISSN:
1899-007X
Subject:
Alternaria; Argemone mexicana; Bipolaris; Curvularia; Fusarium udum; Helminthosporium; alkaloids; fungal spores; fungi; spore germination
Abstract:
... The alkaloids dehydrocorydalmine and oxyberberine isolated from Argemone mexicana were assessed against spore germination of some fungi, e.g., Alternaria cajani, Bipolaris sp., Helminthosporium sp., Fusarium udum and Curvularia sp. While dehydrocorydalmine inhibited 100% spore germination of the fungi Helminthosporium sp. and Curvularia sp. at 5 000 ppm, oxyberberine showed similar activity agains ...
DOI:
10.2478/v10045-009-0046-9

36. Helminthosporium gramineum Rabehn f.sp. echinochloae Conidia for Biological Control of Barnyardgrass

Author:
Geng R. M.; Zhang J. P.; Yu L. Q.
Source:
Weed science 2009 v.57 no.5 pp. 554-561
ISSN:
0043-1745
Subject:
Echinochloa crus-galli; grass weeds; weed control; Helminthosporium; mycoherbicides; biological control agents; conidia; disease incidence; mortality; field experimentation; Oryza sativa; rice; grain crops; grain yield; adverse effects; nontarget organisms; disease course; ultrastructure; China
Abstract:
... A fungal pathogen, Helminthosporium gramineum Rabehn f.sp. echinochloae (HGE), has been developed as a mycoherbicidal agent for the control of barnyardgrass in China. Under greenhouse conditions, the effect of the pathogen on disease incidence, mortality, and dry weight reduction of barnyardgrass was tested to determine the potential of this mycoherbicide. Field experiments during 2007 and 2008 sh ...
DOI:
10.1614/WS-09-036.1

37. Victorivirus, a new genus of fungal viruses in the family Totiviridae

Author:
Ghabrial, Said A.; Nibert, Max L.
Source:
Archives of virology 2009 v.154 no.2 pp. 373-379
ISSN:
0304-8608
Subject:
Bipolaris victoriae; DNA-directed RNA polymerase; Helminthosporium victoriae virus 190S; double-stranded RNA; fungi; genome; mycoviruses; new genus; translation (genetics); virion
Abstract:
... The family Totiviridae comprises viruses with nonsegmented dsRNA genomes and isometric virions. A new genus, Victorivirus, has been approved for this family, named from the specific epithet of Helminthosporium victoriae, host of the type species, Helminthosporium victoriae virus 190S. Distinguishing characteristics of the 11 viruses so far assigned to this genus include infection of filamentous fu ...
DOI:
10.1007/s00705-008-0272-x
PubMed:
19107323

38. Water Soluble Antifungal Metabolites of Pea (Pisum Sativum) Leaves Determine Infection by Erysiphe Pisi

Author:
Amar Bahadur; B. Sarma; U. Singh
Source:
Journal of plant protection research 2009 v.49 no.2 pp. 216-220
ISSN:
1899-007X
Subject:
Alternaria solani; Curvularia lunata; Erysiphe pisi; Helminthosporium; Pisum sativum; antifungal properties; conidia; dipping; fungi; germination; leaves; metabolites; peas; water activity; water solubility
Abstract:
... Antifungal activity of water soluble exudates of pea leaves was assayed. Exudates of different nodal leaves were collected by dipping them in sterilized distilled water for different length of time and conidial germination of four non-pathogenic to pea fungi (Alternaria solani, Curvularia lunata, Helminthosporium penniseti and H. echinocloa) and one pea pathogenic to pea fungus (Erysiphe pisi) was ...
DOI:
10.2478/v10045-009-0032-2

39. Characterization of a Novel Broad-Spectrum Antifungal Protein from Virus-Infected Helminthosporium (Cochliobolus) victoriae

Author:
de Sá, Patricia B.; Havens, Wendy M.; Ghabrial, Said A.
Source:
Phytopathology 2010 v.100 no.9 pp. 880-889
ISSN:
0031-949X
Subject:
Bipolaris victoriae; Penicillium chrysogenum; plant pathogenic fungi; plant viruses; pathogenicity; pathotypes; genetic variation; strain differences; disease resistance; fungal proteins; hyphae; culture filtrates; protein composition; antifungal proteins; amino acid sequences; gene expression
Abstract:
... A broad-spectrum anti-fungal protein of ≈10 kDa, designated victoriocin, was purified from culture filtrates of a virus-infected isolate of the plant-pathogenic fungus Helminthosporium victoriae (teleomorph: Cochliobolus victoriae) by a multistep procedure involving ultrafiltration and reverse-phase high-performance liquid chromatography (RP-HPLC). Amino acid sequences, obtained by automated Edman ...
DOI:
10.1094/PHYTO-100-9-0880
PubMed:
20701485

40. Conservation and use of palm trees in Brazil's landscaping

Author:
Pivetta, K.F.L.; Batista, G.S.; Gimenes, R.; Martins, T.A.; Takane, R.J.
Source:
Acta horticulturae 2010 v. no.881 pp. 1031-1034
ISSN:
0567-7572
Subject:
Alternaria; Arecaceae; Bipolaris; Brassolis; Ceratocystis; Curvularia; Helminthosporium; Pestalotia; Phyllosticta; Rhynchophorus palmarum; landscaping; new species; pests; seed germination; seedling production; trees; Brazil
Abstract:
... Palm trees belong to the Arecaceae family and are widely utilized in landscaping of tropical countries. Although there are many species, just a few are used in Brazil's landscaping, the majority coming from other countries. So, this study had the objective to characterize the plants in the collection of palm trees at UNESP/FCAV, Campus of Jaboticabal, Sao Paulo State, Brazil. The germination of se ...

41. Mycoflora and fumonisin contamination in Brazilian sorghum from sowing to harvest

Author:
Alves dos Reis, Tatiana; Zorzete, Patricia; Pozzi, Claudia Rodrigues; Nascimento da Silva, Valéria; Ortega, Edwin; Corrêa, Benedito
Source:
Journal of the science of food and agriculture 2010 v.90 no.9 pp. 1445-1451
ISSN:
0022-5142
Subject:
harvest date; sowing date; food analysis; food contamination; grain sorghum; Fusarium fujikuroi; fumonisins; food composition; Sorghum bicolor; Helminthosporium; Cladosporium; Brazil
Abstract:
... BACKGROUND: The aim of this study was to characterise the mycoflora and the presence of fumonisin in sorghum grains, correlating the results with the environment and abiotic factors.RESULTS: Fifty samples (five collections of ten samples each) of sorghum were analysed. All samples were found to be contaminated with fungi, with higher frequencies of Cladosporium spp. (61.8%) and Helminthosporium sp ...
DOI:
10.1002/jsfa.3962
PubMed:
20549795

42. Overexpression of the Victoriocin Gene in Helminthosporium (Cochliobolus) victoriae Enhances the Antifungal Activity of Culture Filtrates

Author:
de Sá, Patricia B.; Li, Hua; Havens, Wendy M.; Farman, Mark L.; Ghabrial, Said A.
Source:
Phytopathology 2010 v.100 no.9 pp. 890-896
ISSN:
0031-949X
Subject:
Bipolaris victoriae; plant pathogenic fungi; plant viruses; pathogenicity; disease resistance; culture filtrates; protein composition; fungal proteins; antifungal proteins; gene expression; DNA libraries; antifungal properties; nucleotide sequences; protein synthesis; pathotypes; strain differences; genetic variation
Abstract:
... We have previously reported the isolation and characterization of the broad-spectrum antifungal protein, victoriocin, from culture filtrates of a virus-infected isolate of the plant-pathogenic fungus Helminthosporium (teleomorph: Cochliobolus) victoriae. We predicted that the 10-kDa mature victoriocin is derived in vivo from a preprotoxin precursor that is processed by a signal peptidase and kexin ...
DOI:
10.1094/PHYTO-100-9-0890
PubMed:
20701486

43. Production of Fungal β-amylase and Amyloglucosidase on Some Nigerian Agricultural Residues

Author:
Adeniran, H. A.; Abiose, S. H.; Ogunsua, A. O.
Source:
Food and bioprocess technology 2010 v.3 no.5 pp. 693-698
ISSN:
1935-5130
Subject:
food processing wastes; Aspergillus flavus; Aspergillus fumigatus; Aspergillus niger; Helminthosporium; Penicillium; beta-amylase; glucan 1,4-alpha-glucosidase; enzyme activity; yields; plantains (fruit); cassava; yams; bananas; cell culture; Nigeria
Abstract:
... Aspergillus flavus, Aspergillus fumigatus, Aspergillus niger, Helminthosporium oxysporium, and Penicillium frequestans isolated from common Nigerian agricultural residues like cassava, yam, banana, and plantain peels and brewery spent grains (BSG) were screened for their ability to produce β-amylase and amyloglucosidase using submerged and solid-state cultivation regimens. Enzyme activity (EU) was ...
DOI:
10.1007/s11947-008-0141-3

44. The Status of Date Palm Cultivation and Date Production in Sudan

Author:
Khairi, M.M.A.; Elhassan, M.I.; Bashab, F.A.
Source:
Acta horticulturae 2010 v. no.882 pp. 37-42
ISSN:
0567-7572
Subject:
Ceratocystis paradoxa; Parlatoria blanchardi; Oryzaephilus surinamensis; moths; Cadra figulilella; predators; Graphiola; leaf spot; Phoenix dactylifera; Isoptera; growers; industry; marketing; Nematoda; Coccus viridis; climate; germplasm; harvesting; cultivars; postharvest treatment; research programs; dust mites; common names; Fusarium oxysporum; Fusarium fujikuroi; pests; Aspergillus; Rhynchophorus ferrugineus; tissue culture; irrigation water; income; business enterprises; surveys; Ephestia; latitude; Oligonychus; Helminthosporium; rodents; fungi; Saudi Arabia; Sudan
Abstract:
... With an annual production of about 330,000 tons and a date palm (Phoenix dactylifera L.) population of about 8 million, Sudan ranks number 8 in the list of top date producing countries of the world. However, Sudan has tremendous potential to rank much higher in this scale due to extensive stretches of land between latitude 12°N and the Tropic of Cancer, availability of irrigation water and a suita ...

45. Antifungal and high-performance liquid chromatography analysis of the crude extracts of Acorus calamus, Tinospora cordifolia and Celestrus paniculatus

Author:
Shalini Singh; Rachana Srivastava; Shweta Choudhary
Source:
Archives of phytopathology and plant protection 2011 v.44 no.9 pp. 902-910
ISSN:
1477-2906
Subject:
Acorus calamus; Alternaria solani; Bipolaris; Celastrus paniculatus; Curvularia lunata; Fusarium; Helminthosporium; Tinospora cordifolia; anti-inflammatory agents; antifungal properties; antioxidants; benzoic acid; caffeic acid; cinnamic acid; ferulic acid; gallic acid; high performance liquid chromatography; medicinal plants; plant pathogenic fungi; tannins
Abstract:
... The antifungal activity of methanolic crude extracts of Acorus calamus, Tinospora cordifolia and Celestrus paniculatus was investigated against Alternaria solani, Curvularia lunata, Fusarium sp., Bipolaris sp. and Helminthosporium sp. at different concentrations (1000, 2000, 3000, 4000 and 5000 μg/ml). At 5000 μg/ml, crude extract of T. cordifolia is found to be highly effective against Helminthos ...
DOI:
10.1080/03235400903395369

46. Antifungal efficacy of some ethyl acetate extract fractions of Cyperus rotundus rhizomes against spore germination of some fungi

Author:
Amitabh Singh; S. Maurya; Rashmi Singh; U.P. Singh
Source:
Archives of phytopathology and plant protection 2011 v.44 no.20 pp. 2004-2011
ISSN:
1477-2906
Subject:
Alternaria; Cladosporium; Colletotrichum; Curvularia; Cyperus rotundus; Helminthosporium; disease control; ethyl acetate; fungi; germ tube; plant diseases and disorders; plant products; rhizomes; spore germination
Abstract:
... Plant products play an important role as safe and ecofriendly method in controlling various plant diseases. Ethyl acetate fractions of Cyperus rotundus rhizomes have been found highly effective against some species of Alternaria (A. alternata, A. brassicola, A. solani, Alternaria chearanthi), Colletotrichum (C. musae, Colletotrichum sp.), Curvularia (C. lunata, C. maculans, C. pallescens, C. penni ...
DOI:
10.1080/03235408.2011.559040

47. Diversity and ecology of tropical African fungal spores from a 25,000-year palaeoenvironmental record in southeastern Kenya

Author:
Bas van Geel; Vanessa Gelorini; Anna Lyaruu; André Aptroot; Stephen Rucina; Rob Marchant; Jaap S. Sinninghe Damsté; Dirk Verschuren
Source:
Review of palaeobotany and palynology 2011 v.164 no.3-4 pp. 174-190
ISSN:
0034-6667
Subject:
Alternaria; Coniochaeta; Curvularia; Epicoccum nigrum; Helminthosporium; Lasiodiplodia theobromae; Sporormiella; drought; ecosystems; fossils; fungal spores; fungi; global warming; habitats; herbivores; humidity; lakes; paleoecology; pollen; population density; rain; sediments; temperature; tropics; vegetation types; Europe; Kenya
Abstract:
... Fossil fungal spores and other non-pollen palynomorphs (NPPs) are powerful environmental proxies in European palaeoecological and archaeological contexts. However, their application on other continents, and particularly in the tropics, is hampered by uncertain equivalence with morphologically similar taxa in Europe, and incomplete knowledge of their ecology in the new local contexts. Here we use f ...
DOI:
10.1016/j.revpalbo.2011.01.002

48. Effect of water activity on the production of volatile organic compounds by Muscodor albus and their effect on three pathogens in stored potato

Author:
Ronan Corcuff; Julien Mercier; Russell Tweddell; Joseph Arul
Source:
Fungal biology 2011 v.115 no.3 pp. 220-227
ISSN:
1878-6146
Subject:
biofumigation; terpenoids; Helminthosporium solani; Muscodor albus; isobutyric acid; postharvest diseases; volatile organic compounds; rye; tubers; Pectobacterium carotovorum subsp. atrosepticum; fungi; esters; potatoes; water activity; silver scurf; Fusarium sambucinum; ethanol; aldehydes; pathogens; antifungal properties
Abstract:
... Muscodor albus (Xylariaceae, Ascomycetes) isolate CZ-620 produces antimicrobial volatile organic compounds (VOC), which appear to have potential for the control of various postharvest diseases. The effect of water activity (Aw) on the production of VOC by M. albus culture, and their inhibitory effects on the growth of three pathogens of potato tuber (Fusarium sambucinum, Helminthosporium solani, a ...
DOI:
10.1016/j.funbio.2010.12.005
PubMed:
21354528

49. Occurrence and characterization of fungi and oomycetes transmitted via potting mixtures and organic manures

Author:
A.M. Al-Sadi; F.A. Al-Said; A.H. Al-Jabri; I.H. Al-Mahmooli; A.H. Al-Hinai; A.W.A.M. de Cock
Source:
Crop protection 2011 v.30 no.1 pp. 38-44
ISSN:
0261-2194
Subject:
Alternaria; Aspergillus; Cladosporium; Fusarium equiseti; Fusarium solani; Helminthosporium; Penicillium; Pythium aphanidermatum; Thanatephorus cucumeris; Trichoderma; fungi; fungicide resistance; internal transcribed spacers; ribosomal DNA; taxonomy
Abstract:
... A study was conducted to investigate the most common fungal and oomycete pathogens introduced into farms in Oman via potting mixtures and organic manures. A total of 37 commercial types of potting mixtures (2 local and 35 imported from overseas), 4 commercial types of organic manures and 11 non-commercial types of organic manures were included in the study. Identification of the isolated species w ...
DOI:
10.1016/j.cropro.2010.09.015

50. Registration of ‘Tift 8’ Trispecific Ornamental Pennisetum

Author:
W. W. Hanna; S. K. Braman; B. M. Schwartz
Source:
Journal of plant registrations 2011 v.5 no.3 pp. 295-298
ISSN:
1936-5209
Subject:
Helminthosporium; Pennisetum glaucum; color; crossing; cultivars; flowers; forage crops; freezing; genes; hybrids; leaf spot; leaves; ornamental grasses; photoperiod; pollen; temperature; Georgia
Abstract:
... ‘Tift 8’ (Reg. No. CV-259, PI 659801) is a trispecific ornamental hybrid of Pennisetum approved for release by the University of Georgia College of Agricultural and Environmental Sciences in 2010. It was produced from crosses between P. purpureum Schumach; P. squamulatum Fresen.; and P. glaucum (L.) R. Br. This trispecific hybrid is both pollen and seed sterile. Tift 8 is a vegetatively propagated ...
DOI:
10.3198/jpr2010.07.0435crc