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Type: Journal article
Title: Chromatin interacting factor OsVIL2 increases biomass and rice grain yield
Author: Yang, J.
Cho, L.
Yoon, J.
Yoon, H.
Wai, A.
Hong, W.
Han, M.
Sakakibara, H.
Liang, W.
Jung, K.
Jeon, J.
Koh, H.
Zhang, D.
An, G.
Citation: Plant Biotechnology Journal, 2019; 17(1):178-187
Publisher: Wiley
Issue Date: 2019
ISSN: 1467-7644
Statement of
Jungil Yang, Lae-Hyeon Cho, Jinmi Yoon, Hyeryung Yoon, Antt Htet Wai, Woo-Jong Hong, Muho Han, Hitoshi Sakakibara, Wanqi Liang, Ki-Hong Jung, Jong-Seong Jeon, Hee-Jong Koh, Dabing Zhang, and Gynheung 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.
Keywords: Biomass; chromatin interacting factor; grain yield; OsCKX2; OsVIL2; rice
Rights: © 2018 The Authors. Plant Biotechnology Journal published by Society for Experimental Biology and The Association of Applied Biologists and John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
DOI: 10.1111/pbi.12956
Appears in Collections:Agriculture, Food and Wine publications
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