UDP-glucosyltransferase OsUGT75A promotes submergence tolerance during rice seed germination

被引：74

作者：

He, Yongqi ^{[1
]}

Sun, Shan ^{[1
]}

Zhao, Jia ^{[1
]}

Huang, Zhibo ^{[1
]}

Peng, Liling ^{[1
]}

Huang, Chengwei ^{[1
]}

Tang, Zhengbin ^{[1
]}

Huang, Qianqian ^{[1
]}

Wang, Zhoufei ^{[1
]}

机构：

[1] South China Agr Univ, Lab Seed Sci & Technol, Guangdong Key Lab Plant Mol Breeding, State Key Lab Conservat & Utilizat Subtrop Agro B, Guangzhou 510642, Peoples R China

来源：

NATURE COMMUNICATIONS | 2023年 / 14卷 / 01期

基金：

中国国家自然科学基金;

关键词：

DEEP-WATER RICE; ABSCISIC-ACID; ANAEROBIC GERMINATION; ABA 8'-HYDROXYLASE; GENE-EXPRESSION; GROWTH; ETHYLENE; GIBBERELLIN; MECHANISMS; JASMONATE;

D O I：

10.1038/s41467-023-38085-5

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Submergence stress represents a major obstacle limiting the application of direct seeding in rice cultivation. Under flooding conditions, coleoptile elongation can function as an escape strategy that contributes to submergence tolerance during seed germination in rice; however, the underlying molecular bases have yet to be fully determined. Herein, we report that natural variation of rice coleoptile length subjected to submergence is determined by the glucosyltransferase encoding gene OsUGT75A. OsUGT75A regulates coleoptile length via decreasing free abscisic acid (ABA) and jasmonic acid (JA) levels by promoting glycosylation of these two phytohormones under submergence. Moreover, we find that OsUGT75A accelerates coleoptile length through mediating the interactions between JASMONATE ZIMDOMAIN (OsJAZ) and ABSCISIC ACID-INSENSITIVE (OsABI) proteins. Last, we reveal the origin of the haplotype that contributes to coleoptile length in response to submergence and transferring this haplotype to indica rice can enhance coleoptile length in submergence conditions. Thus, we propose that OsUGT75A is a useful target in breeding of rice varieties suitable for direct seeding cultivation.

引用

页数：14

共 44 条

[1] QTLs associated with tolerance of flooding during germination in rice (Oryza sativa L.) [J].