Dissecting the Molecular Regulation of Natural Variation in Growth and Senescence of Two Eutrema salsugineum Ecotypes
文献类型： 外文期刊
作者： Wang, Fanhua 1 ; Sun, Zhibin 1 ; Zhu, Min 1 ; Zhang, Qikun 1 ; Sun, Yufei 1 ; Sun, Wei 1 ; Wu, Chunxia 1 ; Li, Tongtong 1 ; Zhao, Yiwu 1 ; Ma, Changle 1 ; Zhang, Hui 1 ; Zhao, Yanxiu 1 ; Wang, Zenglan 1 ;
作者机构： 1.Shandong Normal Univ, Coll Life Sci, Shandong Prov Key Lab Plant Stress, Jinan 250014, Peoples R China
2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China
关键词： Eutrema salsugineum; salt tolerance; natural variation; growth; senescence; molecular regulation
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：6.208； 五年影响因子：6.628 ）
ISSN：
年卷期： 2022 年 23 卷 11 期
页码：
收录情况： SCI
摘要： Salt cress (Eutrema salsugineum, aka Thellungiella salsuginea) is an extremophile and a close relative of Arabidopsis thaliana. To understand the mechanism of selection of complex traits under natural variation, we analyzed the physiological and proteomic differences between Shandong (SD) and Xinjiang (XJ) ecotypes. The SD ecotype has dark green leaves, short and flat leaves, and more conspicuous taproots, and the XJ ecotype had greater biomass and showed clear signs of senescence or leaf shedding with age. After 2-DE separation and ESI-MS/MS identification, between 25 and 28 differentially expressed protein spots were identified in shoots and roots, respectively. The proteins identified in shoots are mainly involved in cellular metabolic processes, stress responses, responses to abiotic stimuli, and aging responses, while those identified in roots are mainly involved in small-molecule metabolic processes, oxidation-reduction processes, and responses to abiotic stimuli. Our data revealed the evolutionary differences at the protein level between these two ecotypes. Namely, in the evolution of salt tolerance, the SD ecotype highly expressed some stress-related proteins to structurally adapt to the high salt environment in the Yellow River Delta, whereas the XJ ecotype utilizes the specialized energy metabolism to support this evolution of the short-lived xerophytes in the Xinjiang region.
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