数字农科院2.0

The carotenoid biosynthesis pathway revealed to respond to Na2SiO3 stress on cotton growth

文献类型： 外文期刊

作者： Ruize Song;Xiao Chen;Yunxin He;Xuke Lu;Hao Lan;Yapeng Fan;Hui Huang;Yuping Sun;Menghao Zhang;Lidong Wang;Fange Wu;Xinrui Zhang;Xin Yu;Jie Jiang;Shuai Wang;Xiugui Chen;Junjuan Wang;Lixue Guo;Lanjie Zhao;Ling Li;Ying Li;Qin Chen;Wuwei Ye

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关键词： Carotenoid biosynthesis pathway;Cotton;Na2SiO3 stress;ROS;Transcriptome

期刊名称： Current Plant Biology

ISSN： 2214-6628

年卷期： 2025 年 43 卷

页码：

收录情况： ESCI（2025版）

摘要： Silicon plays a dual role in plant growth. However, excessive application of sodium silicate (Na2SiO3), a commonly utilised Si-based fertiliser, can adversely affect plant development. In the present study, a pretreatment concentration of 20 mM Na2SiO3 was used to investigate its effect on the growth and development of cotton during the germination and three-leaf stages. The radicle necrosis rates of 84 upland cotton genotypes were assessed. RNA-seq analysis revealed 9098 differentially expressed genes (DEGs). Gene Ontology (GO) analysis revealed the enrichment of DEGs associated with various stimuli and stress responses. Concurrently, Kyoto Encyclopaedia of Genes and Genomes (KEGG) pathway analysis identified the regulation of DEGs linked to the plant MAPK signalling pathway, lipid metabolism-related pathways, carotenoid biosynthesis pathway, plant hormone signal transduction, and secondary metabolite biosynthesis under Na2SiO3 stress. Notably, key genes within the carotenoid biosynthesis pathway were upregulated, suggesting that this pathway plays a significant role in mitigating oxidative damage. This study demonstrates that under saline-alkali stress conditions, excessive exogenous application of Na2SiO3 exacerbates toxicity in cotton plants. These findings provide a theoretical foundation for understanding the mechanisms underlying the response of cotton to Na2SiO3 stress and inform the judicious use of Si fertilisers.

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