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Specific physiological responses to alkaline carbonate stress in rice (Oryza sativa) seedlings: organic acid metabolism and hormone signalling

文献类型： 外文期刊

作者： Wang, Dan 1 ; Xu, Miao 2 ; Xu, Teng-yuan 1 ; Lin, Xiu-yun 3 ; Musazade, Elshan 2 ; Lu, Jing-mei 4 ; Yue, Wei-jie 1 ; Guo, Li-quan 2 ; Zhang, Yu 5 ;

作者机构： 1.Jilin Med Univ, Sch Publ Hlth, Jilin 132013, Peoples R China

2.Jilin Agr Univ, Coll Life Sci, Changchun 130118, Peoples R China

3.Jilin Acad Agr Sci, Changchun 130118, Peoples R China

4.Jilin Univ, Sch Life Sci, Changchun 130062, Peoples R China

5.Land Requisit Affairs Ctr Jilin Prov, Changchun 130061, Peoples R China

关键词： abscisic acid (ABA) signalling; alkaline stress; auxin signalling; jasmonic acid (JA) signalling; organic acid biosynthesis; rice; transcriptome analysis; UDP-glycosyltransferase

期刊名称：FUNCTIONAL PLANT BIOLOGY （ 影响因子：2.7； 五年影响因子：3.0 ）

ISSN： 1445-4408

年卷期： 2024 年 51 卷 10 期

页码：

收录情况： SCI

摘要： In recent years, alkaline soda soil has stimulated numerous biological research on plants under carbonate stress. Here, we explored the difference in physiological regulation of rice seedlings between saline (NaCl) and alkaline carbonate (NaHCO3 and Na2CO3) stress. The rice seedlings were treated with 40 mM NaCl, 40 mM NaHCO3 and 20 mM Na2CO3 for 2 h, 12 h, 24 h and 36 h, their physiological characteristics were determined, and organic acid biosynthesis and metabolism and hormone signalling were identified by transcriptome analysis. The results showed that alkaline stress caused greater damage to their photosynthetic and antioxidant systems and led to greater accumulation of organic acid, membrane damage, proline and soluble sugar but a decreased jasmonic acid content compared with NaCl stress. Jasmonate ZIM-Domain (JAZ), the probable indole-3-acetic acid-amido synthetase GH3s, and the protein phosphatase type 2Cs that related to the hormone signalling pathway especially changed under Na2CO3 stress. Further, the organic acid biosynthesis and metabolism process in rice seedlings were modified by both Na2CO3 and NaHCO3 stresses through the glycolate/glyoxylate and pyruvate metabolism pathways. Collectively, this study provides valuable evidence on carbonate-responsive genes and insights into the different molecular mechanisms of saline and alkaline stresses.

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