Time-Course Transcriptomics Analysis Reveals Molecular Mechanisms of Salt-Tolerant and Salt-Sensitive Cotton Cultivars in Response to Salt Stress
文献类型： 外文期刊
作者： Li, Hang 1 ; Liu, Li 1 ; Kong, Xianhui 1 ; Wang, Xuwen 1 ; Si, Aijun 1 ; Zhao, Fuxiang 1 ; Huang, Qian 1 ; Yu, Yu 1 ; Chen, Zhiwen 2 ;
作者机构： 1.Xinjiang Acad Agr & Reclamat Sci, Cotton Inst, Northwest Inland Reg Key Lab Cotton Biol & Genet B, Shihezi 832000, Peoples R China
2.Shanxi Datong Univ, Minist Educ, Engn Res Ctr Coal Based Ecol Carbon Sequestrat Tec, Natl Forest & Grass Adm,Key Lab Graphene Forestry, Datong 037009, Peoples R China
关键词： cotton; salt stress; comparative transcriptomics; phytohormone; salt-tolerant; salt-sensitive
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：4.9； 五年影响因子：5.7 ）
ISSN： 1661-6596
年卷期： 2025 年 26 卷 1 期
页码：
收录情况： SCI
摘要： Salt stress is an environmental factor that limits plant seed germination, growth, and survival. We performed a comparative RNA sequencing transcriptome analysis during germination of the seeds from two cultivars with contrasting salt tolerance responses. A transcriptomic comparison between salt-tolerant cotton cv Jin-mian 25 and salt-sensitive cotton cv Su-mian 3 revealed both similar and differential expression patterns between the two genotypes during salt stress. The expression of genes related to aquaporins, kinases, reactive oxygen species (ROS) scavenging, trehalose biosynthesis, and phytohormone biosynthesis and signaling that include ethylene (ET), gibberellin (GA), abscisic acid (ABA), jasmonic acid (JA), and brassinosteroid (BR) were systematically investigated between the cultivars. Despite the involvement of these genes in cotton's response to salt stress in positive or negative ways, their expression levels were mostly similar in both genotypes. Interestingly, a PXC2 gene (Ghir_D08G025150) was identified, which encodes a leucine-rich repeat receptor-like protein kinase (LRR-RLK). This gene showed an induced expression pattern after salt stress treatment in salt-tolerant cv Jin-mian 25 but not salt-sensitive cv Su-mian 3. Our multifaceted transcriptome approach illustrated a differential response to salt stress between salt-tolerant and salt-sensitive cotton.
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