文献类型： 外文期刊
作者： Wang, Jiaojiao 1 ; Li, Yanjie 1 ; Niu, Yue 1 ; Liu, Yao 1 ; Zhang, Qian 1 ; Lv, Yonglun 1 ; Li, Shuxia 2 ; Wang, Xinhua 1 ; Bao, Yan 1 ;
作者机构： 1.Shanghai Jiao Tong Univ, Shanghai Collaborat Innovat Ctr Agri Seeds, Joint Ctr Single Cell Biol, Sch Agr & Biol, Shanghai 200240, Peoples R China
2.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Key Lab Biol & Genet Resources Trop Crops, Haikou 571101, Peoples R China
关键词： Autophagy; COST; DUF641; SlCOST; Tomato; Stress tolerance; ATG8
期刊名称：PLANT SCIENCE （ 影响因子：5.2； 五年影响因子：5.7 ）
ISSN： 0168-9452
年卷期： 2024 年 342 卷
页码：
收录情况： SCI
摘要： Autophagy is a eukaryote-specific cellular process that can engulf unwanted targets with double -membrane autophagosomes and subject them to the vacuole or lysosome for breaking down and recycling, playing dual roles in plant growth and environmental adaptions. However, perception of specific environmental signals for autophagy induction is largely unknown, limiting its application in agricultural usage. Identification of plantunique DUF641 family COST1 (Constitutively Stressed 1) protein directly links drought perception and autophagy induction, shedding light on manipulating autophagy for breeding stress tolerant crops. In this study, we performed a genome-wide analysis of DUF641/COST family in tomato, and identified five SlCOST genes SlCOST1, -2, -3, -4, and -5. SlCOST genes show both overlapping and distinct expression patterns in plant growth and stress responding. In addition, SlCOST1, -3, -4, -5 proteins demonstrate co-localization with autophagy adaptor protein ATG8e, and all five SlCOST proteins show interactions ATG8e in planta. However, only SlCOST1, the closest ortholog of Arabidopsis AtCOST1, can restore cost1 mutant to WT level, suggesting conserved role of COST1 and functional diversification of SlCOST family in tomato. Our study provides clues for future investigation of autophagy-related COST family and its promising implementations in breeding crops with robust environmental plasticity.
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