Genetic dissection of the initiation of the infection process and nodule tissue development in the Rhizobium-pea (Pisum sativum L.) symbiosis.

ABSTRACT: Twelve non-nodulating pea (Pisum sativum L.) mutants were studied to identify the blocks in nodule tissue development. In nine, the reason for the lack of infection thread (IT) development was studied; this had been characterized previously in the other three mutants. With respect to IT development, mutants in gene sym7 are interrupted at the stage of colonization of the pocket in the curled root hair (Crh- phenotype), mutants in genes sym37 and sym38 are blocked at the stage of IT growth in the root hair cell (Ith- phenotype) and mutants in gene sym34 at the stage of IT growth inside root cortex cells (Itr- phenotype). With respect to nodule tissue development, mutants in genes sym7, sym14 and sym35 were shown to be blocked at the stage of cortical cell divisions (Ccd- phenotype), mutants

SUBMITTER: Tsyganov VE 

PROVIDER: S-EPMC4233866 | biostudies-literature | 2002 Apr

REPOSITORIES: biostudies-literature