Studies on the Nature of Rice Blast Resistance
نویسندگان
چکیده
منابع مشابه
Extensive sequence variation in rice blast resistance gene Pi54 makes it broad spectrum in nature
Rice blast resistant gene, Pi54 cloned from rice line, Tetep, is effective against diverse isolates of Magnaporthe oryzae. In this study, we prospected the allelic variants of the dominant blast resistance gene from a set of 92 rice lines to determine the nucleotide diversity, pattern of its molecular evolution, phylogenetic relationships and evolutionary dynamics, and to develop allele specifi...
متن کاملThe Mediation Mechanism for Flood-Induced Rice Blast Field Resistance
Rice blast, an erratic niche disease incited by Magnaporthe grisea Cav., frequently limits rough rice yields and grower cultivar options in Arkansas rice production areas. Scientists poorly understand why some blast-susceptible varieties such as ‘Newbonnet’, ‘LaGrue’, ‘Mars’, and ‘Cypress’ become increasingly more blast resistant if grown in continuously flooded soil. A greenhouse depth-of-floo...
متن کاملNatural Variation at the Pi-ta Rice Blast Resistance Locus.
ABSTRACT The resistance gene Pi-ta protects rice crops against the fungal pathogen Magnaporthe grisea expressing the avirulence gene AVR-Pita in a gene-for-gene manner. Pi-ta, originally introgressed into japonica rice from indica origin, was previously isolated by positional cloning. In this study, we report the nucleotide sequence of a 5,113-base pair region containing a japonica susceptibili...
متن کاملDevelopment of Dominant Rice Blast Pi-ta Resistance Gene Markers
genotypes can be easily identified (Huang et al., 1997; Hittalmani et al., 2000). A PCR-based Pi-ta gene marker Incorporation of resistance genes into existing rice (Oryza sativa is useful in marker-assisted selection breeding since it L.) cultivars is a powerful strategy and is commonly applied in breeding rice resistance to blast disease [caused by Pyricularia grisea Sacc. is the part of resi...
متن کاملMolecular mechanism of Pb1-mediated panicle blast resistance in rice
Background In Japan, an average of 22 billion yen is spent annually for agrochemicals in order to control rice damage caused by the blast disease. Thus, blast resistance is one of the most important targets of rice breeding. Several blast resistance genes have been identified so far. However, many of them are effective against particular races of blast fungi only and the resistance against the ...
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ژورنال
عنوان ژورنال: Japanese Journal of Phytopathology
سال: 1941
ISSN: 1882-0484,0031-9473
DOI: 10.3186/jjphytopath.11.81