An Arabidopsis nonhost resistance gene, IMPORTIN ALPHA 2 provides immunity against rice sheath blight pathogen, Rhizoctonia solani.

ABSTRACT: There is neither resistant rice cultivar nor any control measure against Rhizoctonia solani AG-1 IA (RS), causal of sheath blight and a major threat to global rice production. Rice is a host and Arabidopsis is a nonhost with underlying nonhost resistance (NHR) gene which is largely untested. Using approaches of forward genetics and tools, cytology, and molecular biology, we identified homozygous mutants in Arabidopsis, mapped the NHR gene, and functionally characterized it in response to RS. Rss1 was mapped on Ch 4 between JAERI18 and Ch4_9.18 (844.6 Kb) and identified IMPORTIN ALPHA 2 as the candidate RSS1 gene. We found that breach of immunity in rss1 by RS activates defense responses whereas photosynthetic pigment biosynthes

SUBMITTER: Parween D 

PROVIDER: S-EPMC8856995 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature