WB1, a Regulator of Endosperm Development in Rice, Is Identified by a Modified MutMap Method.

ABSTRACT: Abnormally developed endosperm strongly affects rice (Oryza sativa) appearance quality and grain weight. Endosperm formation is a complex process, and although many enzymes and related regulators have been identified, many other related factors remain largely unknown. Here, we report the isolation and characterization of a recessive mutation of White Belly 1 (WB1), which regulates rice endosperm development, using a modified MutMap method in the rice mutant wb1. The wb1 mutant develops a white-belly endosperm and abnormal starch granules in the inner portion of white grains. Representative of the white-belly phenotype, grains of wb1 showed a higher grain chalkiness rate and degree and a lower 1000-grain weight (decreased by ~34%), in comparison wit

SUBMITTER: Wang H 

PROVIDER: S-EPMC6121324 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature