Translatome and Transcriptome Analyses Reveal the Mechanism that Underlies the Enhancement of Salt Stress by the Small Peptide Ospep5 in Plants
文献类型： 外文期刊
作者： Wang, Jinyan 1 ; Li, Yang 1 ; Li, Mingyue 1 ; Zhang, Wenting 1 ; Lu, Yaping 6 ; Hua, Kai 7 ; Ling, Xitie 1 ; Chen, Tianzi 1 ; Guo, Dongshu 1 ; Yang, Yuwen 1 ; Zheng, Zhongbing 4 ; Liu, Qing 1 ; Zhang, Baolong 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Prov Key Lab Agrobiol, Nanjing 210014, Peoples R China
2.Inst Germplasm Resources & Biotechnol, Jiangsu Acad Agr Sci, Nanjing 210014, Peoples R China
3.Zhongshan Biol Breeding Lab, Nanjing 210014, Peoples R China
4.Hainan Univ, Sanya Inst Breeding & Multiplicat, Sch Breeding & Multiplicat, Sanya 572025, Peoples R China
5.Yangzhou Univ, Coll Agr, Yangzhou 225009, Peoples R China
6.Nanjing Agr Univ, Coll Life Sci, Expt Ctr Life Sci, Nanjing 210095, Peoples R China
7.Shanghai Chenshan Bot Garden, Shanghai Key Lab Plant Funct Genom & Resources, Shanghai 201602, Peoples R China
关键词： translatome; transcriptome; peptidome; small peptides; rice salt tolerance
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.1； 五年影响因子：6.3 ）
ISSN： 0021-8561
年卷期： 2024 年 72 卷 8 期
页码：
收录情况： SCI
摘要： Salt stress significantly impedes plant growth and the crop yield. This study utilized de novo transcriptome assembly and ribosome profiling to explore mRNA translation's role in rice salt tolerance. We identified unrecognized translated open reading frames (ORFs), including 42 upstream transcripts and 86 unannotated transcripts. A noteworthy discovery was the role of a small ORF, Ospep5, in conferring salt tolerance. Overexpression of Ospep5 in plants increased salt tolerance, while its absence led to heightened sensitivity. This hypothesis was corroborated by the findings that exogenous application of the synthetic small peptide Ospep5 bolstered salt tolerance in both rice and Arabidopsis. We found that the mechanism underpinning the Ospep5-mediated salt tolerance involves the maintenance of intracellular Na+/K+ homeostasis, facilitated by upregulation of high-affinity potassium transporters (HKT) and Na+/H+ exchangers (SOS1). Furthermore, a comprehensive multiomics approach, particularly ribosome profiling, is instrumental in uncovering unannotated ORFs and elucidating their functions in plant stress responses.
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