Identification and linkage analysis of a new rice bacterial blight resistance gene from XM14, a mutant line from IR24.

ABSTRACT: Bacterial blight caused by Xanthomonas oryzae pv. oryzae (Xoo) is a chief factor limiting rice productivity worldwide. XM14, a rice mutant line resistant to Xoo, has been obtained by treating IR24, which is susceptible to six Philippine Xoo races and six Japanese Xoo races, with N-methyl-N-nitrosourea. XM14 showed resistance to six Japanese Xoo races. The F₂ population from XM14 × IR24 clearly showed 1 resistant : 3 susceptible segregation, suggesting control of resistance by a recessive gene. The approximate chromosomal location of the resistance gene was determined using 10 plants with shortest lesion length in the F₂ population from XM14 × Koshihikari, which is susceptible to Japanese Xoo races. DNA marker-ass

SUBMITTER: Busungu C 

PROVIDER: S-EPMC5010315 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature