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- Description:
- Includes references
- Author:
- Costanzo, Stefano , Ospina-Giraldo, Manuel D. , Deahl, Kenneth L. , Baker, C. Jacyn , Jones, Richard W.
- Subject:
- Phytophthora infestans , Phytophthora sojae , Phytophthora ramorum , plant pathogenic fungi , endo-1,4-beta-glucanase , messenger RNA , introns , alternative splicing , genomics , sequence analysis , amino acid sequences , nucleotide sequences
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2007
- Description:
- Meeting held February 28 - March 3, 2007, Salt Lake City, Utah.
- Author:
- Lartey, R.E. , Caesar-TonThat, T.C. , Hanson, S. , Iversen, W.M. , Evans, R.G. , American Society of Sugar Beet Technologists.
- Subject:
- Cercospora beticola , plant pathogenic fungi , soil fungi , soil-borne diseases , disease detection , polymerase chain reaction , Beta vulgaris , sugar beet , nucleotide sequences , crop residues , spore germination , conidia , inoculum density , Montana
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2007
- Description:
- Includes references
- Author:
- Wang, C.L. , Malkus, A. , Zuzga, S.M. , Chang, P.F.L. , Cunfer, B.M. , Arseniuk, E. , Ueng, P.P.
- Subject:
- Leptosphaeria nodorum , plant pathogenic fungi , genes , histidine , amino acid metabolism , nucleotide sequences , introns , biotypes , Triticum aestivum , Hordeum vulgare , Secale cereale , Paspalum dilatatum , phylogeny
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2007
- Description:
- Includes references
- Author:
- Starkey, D.E. , Ward, T.J. , Aoki, T. , Gale, L.R. , Kistler, H.C. , Geiser, D.M. , Suga, H. , Tóth, B. , Varga, J. , O'Donnell, K.
- Subject:
- Fusarium , plant pathogenic fungi , scab diseases , trichothecenes , mycotoxins , geographical variation , genetic variation , phylogeny , molecular systematics , taxonomy , loci , nucleotide sequences , genes , pathogenicity , Triticum aestivum , wheat , microbial genetics , new species , chemotypes , nivalenol , new geographic records , fungal anatomy , United States , Australia , South Africa
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2007
- Description:
- The avirulence gene AVR-Pita of Magnaporthe oryzae determines the efficacy of the resistance gene Pi-ta in rice. The structures of the AVR-Pita alleles in 39 US isolates of M. oryzae were analyzed using polymerase chain reaction. A series of allele-specific primers were developed from the AVR-Pita gene to examine the presence of AVR-Pita. Orthologous alleles of the AVR-Pita gene were amplified from avirulent isolates. Sequence analysis of five alleles revealed three introns at identical positions in the AVR-Pita gene. All five alleles were predicted to encode metalloprotease proteins highly similar to the AVR-Pita protein. In contrast, the same regions of the AVR-Pita alleles were not amplified in the most virulent isolates, and significant variations of DNA sequence at the AVR-Pita allele were verified by Southern blot analysis. A Pot3 transposon was identified in the DNA region encoding the putative protease motif of the AVR-Pita protein from a field isolate B2 collected from a Pi-ta-containing cultivar Banks. These findings show that transposons can contribute to instability of AVR-Pita and is one molecular mechanism for defeating resistance genes in rice cultivar Banks.
- Author:
- Zhou, E.X. , Jia, Y.L. , Singh, P. , Correll, J.C. , Lee, F.N.
- Subject:
- Magnaporthe , plant pathogenic fungi , genes , virulence , alleles , introns , DNA primers , polymerase chain reaction , nucleotide sequences , transposons , pathogenicity , blast disease , Oryza sativa , rice
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2007
- Description:
- Includes references
- Author:
- Leslie, J.F. , Anderson, L.L. , Bowden, R.L. , Lee, Y.W.
- Subject:
- Fusarium , phylogeny , biotypes , genetic variation , Gibberella zeae , species diversity , strain differences , food pathogens , food contamination , feed contamination , molds (fungi) , interspecific hybridization , amplified fragment length polymorphism , nucleotide sequences , genetic relationships , plant pathogenic fungi , plant diseases and disorders
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2007
- Description:
- Includes references
- Author:
- Bilodeau, G.J. , Lévesque, C.A. , Cock, A.W.A.M. de , Duchaine, C. , Brière, S. , Uribe, P. , Martin, F.N. , Hamelin, R.C.
- Subject:
- Quercus , forest trees , shrubs , fungal diseases of plants , Phytophthora ramorum , plant pathogenic fungi , disease detection , polymerase chain reaction , rapid methods , internal transcribed spacers , DNA profiling , tubulin , genetic markers , nucleotide sequences
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2007
- Description:
- Includes references
- Author:
- Malvárez, G. , Carbone, I. , Grünwald, N.J. , Subbarao, K.V. , Schafer, M. , Kohn, L.M.
- Subject:
- Lactuca sativa , lettuce , Pisum sativum , peas , fungal diseases of plants , Sclerotinia sclerotiorum , plant pathogenic fungi , new geographic records , DNA profiling , nucleotide sequences , pathotypes , genetic markers , disease prevalence , California , Washington
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2007
- Description:
- Includes references
- Author:
- Hanna, J.W. , Klopfenstein, N.B. , Kim, M.-S. , McDonald, G.I. , Moore, J.A.
- Subject:
- Armillaria ostoyae , plant pathogenic fungi , ribosomal DNA , nucleotide sequences , internal transcribed spacers , repetitive sequences , phylogeny , biogeography , genetic variation , Western United States
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2007
- Description:
- Includes references
- Author:
- Covert, S.F. , Aoki, T. , O'Donnell, K. , Starkey, D. , Holliday, A. , Geiser, D.M. , Cheung, F. , Town, C. , Strom, A. , Juba, J.
- Subject:
- Fusarium , plant pathogenic fungi , sexual reproduction , fungal anatomy , sporulation , ascospores , genetic markers , single nucleotide polymorphism , loci , nucleotide sequences , genetic recombination
- Collection:
- Journal Articles, USDA Authors, Peer-Reviewed
- Year:
- 2007
