TaSRO1 interacts with TaVP1 to modulate seed dormancy and pre-harvest sprouting resistance in wheat

Shupeng Liu ¹Li Li ¹Wenlong Wang ¹Guangmin Xia ¹Shuwei Liu¹

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作者信息

1. Key Laboratory of Plant Development and Environmental Adaptation Biology,Ministry of Education,School of Life Science,Shandong University,Qingdao 266237,China
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Abstract

Dormancy is an adaptive trait which prevents seeds from germinating under unfavorable envi-ronmental conditions.Seeds with weak dormancy undergo pre-harvest sprouting(PHS)which de-creases grain yield and quality.Understanding the genetic mechanisms that regulate seed dormancy and resistance to PHS is crucial for ensuring global food security.In this study,we illustrated the function and molecular mechanism of TaSRO1 in the regulation of seed dormancy and PHS resist-ance by suppressing TaVP1.The tasro1 mutants exhibited strong seed dormancy and enhanced resistance to PHS,whereas the mutants of tavp1 displayed weak dormancy.Genetic evidence has shown that TaVP1 is epistatic to TaSRO1.Bio-chemical evidence has shown that TaSRO1 inter-acts with TaVP1 and represses the transcriptional activation of the PHS resistance genes TaPHS1 and TaSdr.Furthermore,TaSRO1 undermines the synergistic activation of TaVP1 and TaABI5 in PHS resistance genes.Finally,we highlight the great potential of tasro1 alleles for breeding elite wheat cultivars that are resistant to PHS.

Key words

wheat/seed dormancy/pre-harvest sprouting(PHS)/ABA signaling/vivipary

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基金项目

Natural Science Foundation of Shandong Province(ZR2019ZD16)

Natural Science Foundation of Shandong Province(ZR2020JQ14)

National Natural Science Foundation of China(32171935)

National Natural Science Foundation of China(U1906202)

Agricultural Variety Improvement Project of Shandong Province(2022LZGC002)

National Key R&D Program of China(2022YFD1201700)

出版年

2024

植物学报(英文版)

中国植物学会

植物学报(英文版)

CSTPCDCSCD

影响因子：0.921

ISSN：1672-9072

参考文献量71

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