Journal ArticleDOI
DNA polymorphisms of isolates of Magnaporthe grisea from India that are pathogenic to finger millet and rice
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TLDR
Results confirm that the rice and millet-infecting M. grisea populations in India are distinct and show that the blast fungus from the two hosts did not cross-infect, nor did the two forms cross in the laboratory.About:
This article is published in Fungal Biology.The article was published on 2000-02-01. It has received 36 citations till now. The article focuses on the topics: Magnaporthe grisea & Restriction fragment length polymorphism.read more
Citations
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Journal ArticleDOI
Pyricularia grisea Isolates Causing Gray Leaf Spot on Perennial Ryegrass (Lolium perenne) in the United States: Relationship to P. grisea Isolates from Other Host Plants.
TL;DR: The MAGGY retrotransposon was unevenly distributed in the prg pathogens, with some isolates lacking this element, some possessing six to eight copies, and others having 10 to 30 copies.
Journal ArticleDOI
Magnaporthe oryzae Populations Adapted to Finger Millet and Rice Exhibit Distinctive Patterns of Genetic Diversity, Sexuality and Host Interaction
J.P. Takan,J. Chipili,S. Muthumeenakshi,Nicholas J. Talbot,E. Manyasa,Ranajit Bandyopadhyay,Y. Sere,S.K. Nutsugah,Pedro Talhinhas,Pedro Talhinhas,M. Hossain,Averil E. Brown,Surapareddy Sreenivasaprasad,Surapareddy Sreenivasaprasad +13 more
TL;DR: Distinctive patterns of genetic diversity, sexual reproductive potential and pathogenicity suggest adaptive divergence of host-specific forms of M. oryzae populations linked to crop domestication and agricultural intensification.
Book ChapterDOI
World Population Structure and Migration of the Rice Blast Fungus, Magnaporthe oryzae
Didier Tharreau,Isabelle Fudal,Dodelys Andriantsimialona,Santoso,Dwinita Wikan Utami,Elisabeth Fournier,Marc-Henri Lebrun,Jean-Loup Nottéghem +7 more
TL;DR: The clonal structure of Magnaporthe oryzae populations was observed in various countries and the results suggest a unique apparition event followed by long distance migrations of virulent genotypes.
Journal ArticleDOI
Pyricularia grisea Causing Gray Leaf Spot of Perennial Ryegrass Turf: Population Structure and Host Specificity
TL;DR: The copy number and fingerprints of Pot2 and MGR586 in isolates of P. grisea from perennial ryegrass indicate that they are genetically distinct from the isolates derived from rice (Oryza sativa) in the United States.
Journal Article
Genetic diversity of Indian isolates of rice blast pathogen (Magnaporthe grisea) using molecular markers
Sonia Chadha,T. Gopalakrishna +1 more
TL;DR: The genetic relatedness and the probable mechanisms of genetic variation among the Indian isolates of rice blast pathogen were studied and the source of pathogen variation will aid in designing improved methods for management of the rice blast disease.
References
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Journal ArticleDOI
Mathematical model for studying genetic variation in terms of restriction endonucleases
Masatoshi Nei,Wen-Hsiung Li +1 more
TL;DR: A mathematical model for the evolutionary change of restriction sites in mitochondrial DNA is developed and a measure called "nucleotide diversity" is proposed to express the degree of polymorphism in a population at the nucleotide level.
Journal ArticleDOI
Magnaporthe grisea genes for pathogenicity and virulence identified through a series of backcrosses.
TL;DR: A genetic cross was conducted between the weeping lovegrass pathogen 4091-5-8, a highly fertile, hermaphroditic laboratory strain, and the rice pathogen O-135, a poorly fertile, female-sterile field isolate that infects weepingLovegrass as well as rice.
Journal ArticleDOI
Identification, cloning, and characterization of PWL2, a gene for host species specificity in the rice blast fungus.
James A. Sweigard,Anne M. Carroll,Seogchan Kang,Leonard Farrall,Forrest G. Chumley,Barbara Valent +5 more
TL;DR: The PWL2 host species specificity gene has properties analogous to classical avirulence genes, which function to prevent infection of certain cultivars of a particular host species.
Journal ArticleDOI
Rice blast disease
TL;DR: This text has been developed from a conference held in Madison, Wisconsin, in August 1993, and presents a review of the status of knowledge of the disease and its management.
Journal ArticleDOI
Host species-specific conservation of a family of repeated DNA sequences in the genome of a fungal plant pathogen
TL;DR: The results suggest that host selection for a specific pathogen genotype has occurred during the breeding and cultivation of rice, and named this family of DNA sequences "MGR" for M. grisea repeat.