Panicle Apical Abortion 3 Controls Panicle Development and Seed Size in Rice.

ABSTRACT:

Background

In rice, panicle apical abortion is a common phenomenon that usually results in a decreased number of branches and grains per panicle, and consequently a reduced grain yield. A better understanding of the molecular mechanism of panicle abortion is thus critical for maintaining and increasing rice production.

Results

We reported a new rice mutant panicle apical abortion 3 (paa3), which exhibited severe abortion of spikelet development on the upper part of the branches as well as decreased grain size over the whole panicle. Using mapping-based clone, the PAA3 was characterized as the LOC_ Os04g56160 gene, encoding an H⁺-ATPase. The PAA3 was expressed highly in the stem and panicle, and its protein was localized in the plasma membrane. Our data further sho

SUBMITTER: Yang F 

PROVIDER: S-EPMC8282854 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature