Chromatin interacting factor OsVIL2 increases biomass and rice grain yield

Plant Biotechnology Journal
Jungil YangGynheung An

Abstract

Grain number is an important agronomic trait. We investigated the roles of chromatin interacting factor Oryza sativa VIN3-LIKE 2 (OsVIL2), which controls plant biomass and yield in rice. Mutations in OsVIL2 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, OsVIL2 was directly associated with chromatins in the promoter region of CYTOKININ OXIDASE/DEHYDROGENASE2 (OsCKX2), a gene responsible for cytokinin degradation. Likewise, active cytokinin levels were increased in the OX plants. We conclude that OsVIL2 improves the production of biomass and grain by suppressing OsCKX2 chromatin.

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Citations

Aug 23, 2019·The Plant Journal : for Cell and Molecular Biology·Ze-Hua GuoMee-Len Chye
Dec 8, 2020·Frontiers in Genetics·Priyanka DeveshwarAkhilesh K Tyagi
Nov 17, 2021·Journal of Integrative Plant Biology·Bin TuShigui Li

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Methods Mentioned

BETA
transgenic
PCR
immunoprecipitation
immunoprecipitation assay

Software Mentioned

Illustrator
Tophat
R
MapMan
EXCEL

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