编码 FT-L1 的 QTL GN1.1 通过调节水稻的极性辅助素运输来调节谷粒数和产量。

IF 9.3 1区 生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY
Huai-Yu Zhao, Jun-Xiang Shan, Wang-Wei Ye, Nai-Qian Dong, Yi Kan, Yi-Bing Yang, Hong-Xiao Yu, Zi-Qi Lu, Shuang-Qin Guo, Jie-Jie Lei, Ben Liao, Hong-Xuan Lin
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引用次数: 0

摘要

水稻粒数是影响产量的关键农艺性状。在这项研究中,我们鉴定了一个数量性状位点(QTL)--粒数 1.1(GN1.1),它编码一个开花基因座 T-like1(FT-L1)蛋白,是水稻粒数的负调控因子。根据小区产量测试,从籼稻品种 BF3-104 中提取的精英等位基因 GN1.1B 与粳稻品种 Nipponbare 相比,谷粒产量提高了 14.6%。我们证明,GN1.1 与 ADP 核糖基化因子(Arf)-GTP 酶激活蛋白(Gap)OsZAC 相互作用并增强其稳定性。OsZAC 功能缺失会导致谷粒数量增加。根据我们的数据,我们认为 GN1.1B 通过与 OsZAC 相互作用影响极性辅助素转运(PAT),从而促进了水稻幼小圆锥花序中辅助素含量的提高。我们的研究揭示了 GN1.1 基因座在水稻圆锥花序发育过程中的关键作用,并为通过遗传改良提高水稻谷粒产量提供了一个新的、有前景的等位基因。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A QTL GN1.1, encoding FT-L1, regulates grain number and yield by modulating polar auxin transport in rice

A QTL GN1.1, encoding FT-L1, regulates grain number and yield by modulating polar auxin transport in rice

Rice grain number is a crucial agronomic trait impacting yield. In this study, we characterized a quantitative trait locus (QTL), GRAIN NUMBER 1.1 (GN1.1), which encodes a Flowering Locus T-like1 (FT-L1) protein and acts as a negative regulator of grain number in rice. The elite allele GN1.1B, derived from the Oryza indica variety, BF3-104, exhibits a 14.6% increase in grain yield compared with the O. japonica variety, Nipponbare, based on plot yield tests. We demonstrated that GN1.1 interacted with and enhanced the stability of ADP-ribosylation factor (Arf)-GTPase-activating protein (Gap), OsZAC. Loss of function of OsZAC results in increased grain number. Based on our data, we propose that GN1.1B facilitates the elevation of auxin content in young rice panicles by affecting polar auxin transport (PAT) through interaction with OsZAC. Our study unveils the pivotal role of the GN1.1 locus in rice panicle development and presents a novel, promising allele for enhancing rice grain yield through genetic improvement.

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来源期刊
Journal of Integrative Plant Biology
Journal of Integrative Plant Biology 生物-生化与分子生物学
CiteScore
18.00
自引率
5.30%
发文量
220
审稿时长
3 months
期刊介绍: Journal of Integrative Plant Biology is a leading academic journal reporting on the latest discoveries in plant biology.Enjoy the latest news and developments in the field, understand new and improved methods and research tools, and explore basic biological questions through reproducible experimental design, using genetic, biochemical, cell and molecular biological methods, and statistical analyses.
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