Rice gene OsUGT75A regulates seedling emergence under deep-sowing conditions

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外文摘要：Poor seedling emergence is a challenge for direct seeding of rice under deep-sowing field conditions.Here we reveal that UDP-glucosyltransferase OsUGT75A promotes rice seedling emergence under deep-sowing conditions by increasing shoot length.Expression of OsUGT75A was higher in the middle regions of the shoot and in shoots under deep-sowing conditions.Levels of free abscisic acid(ABA)and jas-monates(JA)were higher in shoots of OsUGT75A mutants than in those of wild-type plants,and OsUGT75A mutants were more sensitive to ABA and JA treatments.Reduced shoot length was attributed to higher ABA INSENSITIVE 3(OsABI3)expression and lower JASMONATE-ZIM domain protein(OsJAZ)expression in shoots.Shoot extension by OsUGT75A is achieved mainly by promotion of cell elongation.An elite haplotype of OsUGT75A associated with increased shoot length was identified among indica rice accessions.OsUGT75A acts to increase seedling emergence under deep-sowing conditions.

外文关键词：

Abscisic acidDeep-sowingJasmonic acidRiceShoot length

作者：

Jia Zhao、Siyu Liu、Xiaoqian Zhao、Zhibo Huang、Shan Sun、Zixuan Zeng、Yongqi He、Zhoufei Wang

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作者单位：

The Laboratory of Seed Science and Technology,Guangdong Key Laboratory of Plant Molecular Breeding,National Engineering Research Center of Plant Space Breeding,South China Agricultural University,Guangzhou 510642,Guangdong,China

基金：

Key-Area Research and Development Program of Guangdong ProvinceNatural Science Foundation of Guangdong ProvinceNatural Science Foundation of Guangdong ProvinceScience and Technology Project of GuangzhouScience and Technology Project of GuangzhouSpecial Fund for Student Cultivation of Scientific and Technological Innovation of Guangdong ProvinceDouble First-Class Discipline Promotion Project of South China Agricultural University

项目编号：

2022B02020600062023A15150120522023A15150120922023A04J07492023A04J1452pdjh2021b00842021B10564001

出版年：

2024

DOI：

10.1016/j.cj.2023.10.010

作物学报(英文版)

CSTPCD

ISSN：

年,卷(期)：2024.12(1)

参考文献量33