Chromosomal Location of xa19, a Broad-Spectrum Rice Bacterial Blight Resistant Gene from XM5, a Mutant Line from IR24.

ABSTRACT: Bacterial blight is an important rice disease caused by bacteria named Xanthomonas oryzae pv. oryzae (Xoo). XM5 is an Xoo resistant mutant line with the genetic background of IR24, an Indica Xoo susceptible cultivar, induced by a chemical mutagen N-methyl-N-nitrosourea (MNU). XM5 carries a recessive Xoo resistant gene, xa19. Trisomic analysis was conducted using the cross between XM5 and the trisomic series under the genetic background of IR24, showing that xa19 was located on chromosome 7. The approximate chromosomal location was found using 37 surely resistant plants in the F₂ population from XM5 × Kinmaze, which was susceptible to most Japanese Xoo races. The IAS44 line carries a Japonica cultivar Asominori chromo

SUBMITTER: Taura S 

PROVIDER: S-EPMC9919685 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature