您好，欢迎访问中国农业科学院 机构知识库！

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

GWAS unravels acid phosphatase ACP2 as a photosynthesis regulator under phosphate starvation conditions through modulating serine metabolism in rice

文献类型： 外文期刊

作者： Liu, Sushuang 1 ; Xu, Zhan 3 ; Essemine, Jemaa 1 ; Liu, Yanmin 2 ; Liu, Chundong 2 ; Zhang, Feixue 4 ; Iqbal, Zubair 1 ; Qu, Mingnan 1 ;

作者机构： 1.Yangzhou Univ, Jiangsu Key Lab Crop Genet & Physiol, Jiangsu Key Lab Crop Cultivat & Physiol, Agr Coll, Yangzhou 225009, Peoples R China

2.Huzhou Coll, Dept Life Sci & Hlth, Huzhou 313000, Peoples R China

3.Chinese Acad Agr Sci, Guangdong Lab Lingnan Modern Agr, Genome Anal Lab,Minist Agr & Rural Affairs, Shenzhen Branch,Agr Genom Inst Shenzhen, Shenzhen 518120, Peoples R China

4.Huzhou Acad Agr Sci, Inst Crop, Huzhou 313000, Peoples R China

关键词： phosphate starvation; GWAS; photosynthetic adaption; photosynthetic phosphate use efficiency; genetic variation; SNP; rice

期刊名称：PLANT COMMUNICATIONS （ 影响因子：9.4； 五年影响因子：9.4 ）

ISSN： 2590-3462

年卷期： 2024 年 5 卷 7 期

页码：

收录情况： SCI

摘要： Inorganic phosphorus (Pi) deficiency significantly impacts plant growth, development, and photosynthetic efficiency. This study evaluated 206 rice accessions from a MiniCore population under both Pi-sufficient (Pi + ) and Pi-starvation (Pi ) conditions in the field to assess photosynthetic phosphorus use efficiency (PPUE), defined as the ratio of A satPi to A satPi+ . A genome-wide association study and differential gene expression analyses identified an acid phosphatase gene ( ACP2 ) that responds strongly to phosphate availability. Overexpression and knockout of ACP2 led to a 67% increase and 32% decrease in PPUE, respectively, compared with wild type. Introduction of an elite allele A, by substituting the v5 SNP G with A, resulted in an 18% increase in PPUE in gene-edited ACP2 rice lines. The phosphate-responsive gene PHR2 was found to transcriptionally activate ACP2 in parallel with PHR2 overexpression, resulting in an 11% increase in PPUE. Biochemical assays indicated that ACP2 primarily catalyzes the hydrolysis of phosphoethanolamine and phospho-L-serine. In addition, serine levels increased significantly in the ACP2 v8G- overexpression line, along with a concomitant decrease in the expression of all nine genes involved in the photorespiratory pathway. Application of serine enhanced PPUE and reduced photorespiration rates in ACP2 mutants under Pi-starvation conditions. We deduce that ACP2 plays a crucial role in promoting photosynthesis adaptation to Pi starvation by regulating serine metabolism in rice.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台