ZmGRAS11, transactivated by Opaque2, positively regulates kernel size in maize

二维码有效期 120s

摘要Although the genetic basis for endosperm devel-opment in maize (Zea mays) has been well studied, the mechanism for coordinating grain filling with increasing kernel size remains elusive. Here, we report that increased kernel size was selected during modern breeding and identify a novel DELLA-like transcriptional regulator, ZmGRAS11, which positively regulates kernel size and kernel weight in maize. We find that Opaque2, a core transcription factor for zein protein and starch accumulation, transactivates the expression of ZmGRAS11. Our data suggest that the Opaque2-ZmGRAS11 module mediates synergistic endo-sperm enlargement with grain filling.

作者 Ye Li ^[1] Shuai Ma ^[2] Qianqian Zhao ^[2] Di Lv ^[2] Baobao Wang ^[2] Ke Xiao ^[3] Jiameng Zhu ^[4] Suzhen Li ^[2] Wenzhu Yang ^[2] Xiaoqing Liu ^[2] Haiyang Wang ^[5] Xiaojin Zhou ^[2] Rumei Chen ^[2] 学术成果认领

作者单位 Crop Functional Genome Research Center,Biotechnology Research Institute,Chinese Academy of Agricultural Sciences,Beijing 100081,China;Key Laboratory of Agricultural Products Chemical and Biological Processing Technology,Zhejiang University of Science and Technology,Hangzhou 310023,China ^[1] Crop Functional Genome Research Center,Biotechnology Research Institute,Chinese Academy of Agricultural Sciences,Beijing 100081,China ^[2] Crop Functional Genome Research Center,Biotechnology Research Institute,Chinese Academy of Agricultural Sciences,Beijing 100081,China;Department of Applied Chemistry,College of Science,China Agricultural University,Beijing 100193,China ^[3] Crop Functional Genome Research Center,Biotechnology Research Institute,Chinese Academy of Agricultural Sciences,Beijing 100081,China;National Engineering Laboratory of Crop Stress Resistance Breeding,Anhui Agricultural University,Hefei 230036,China ^[4] College of Life Sciences,State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources,South China Agricultural University,Guangzhou 510642,China ^[5]

关键词 DELLA-like endosperm kernel size maize Opaque2 seed weight

栏目名称 Breakthrough Reports

发布时间 2022-01-06

基金项目

We thank Prof Yubin Li(Qingdao Agricultural University)for providing the Ac activator line and suggestions for generating the second allele of Dsg insertion We also thank Prof Min-gshun Li(Chinese Academy of Agricultural Sciences)for pro-viding the o2 mutant This work was supported by the National Natural Science Foundation of China to X grant number 31771707 National Special Program for GMO Development of China to R 2016ZX08003-002 and the National Key Basic Research Program of China

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准确一般字义偏差语意偏离译文作用小提交