In:
Plant Biotechnology Journal, Wiley, Vol. 17, No. 1 ( 2019-01), p. 178-187
Abstract:
Grain number is an important agronomic trait. We investigated the roles of chromatin interacting factor Oryza sativa VIN 3‐ LIKE 2 (Os VIL 2), which controls plant biomass and yield in rice. Mutations in Os VIL 2 led to shorter plants and fewer grains whereas its overexpression ( OX ) enhanced biomass production and grain numbers when compared with the wild type. RNA ‐sequencing analyses revealed that 1958 genes were up‐regulated and 2096 genes were down‐regulated in the region of active division within the first internodes of OX plants. Chromatin immunoprecipitation analysis showed that, among the downregulated genes, Os VIL 2 was directly associated with chromatins in the promoter region of CYTOKININ OXIDASE / DEHYDROGENASE 2 ( Os CKX 2 ), a gene responsible for cytokinin degradation. Likewise, active cytokinin levels were increased in the OX plants. We conclude that Os VIL 2 improves the production of biomass and grain by suppressing Os CKX 2 chromatin.
Type of Medium:
Online Resource
ISSN:
1467-7644
,
1467-7652
DOI:
10.1111/pbi.2019.17.issue-1
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
2136367-5
SSG:
12