Sugar transporter genes in a Symbiodinium species: genome-wide identification, expression analysis, and implications for coral-zooxanthellae symbiosis under stress

文献类型： 外文期刊

第一作者： Wu, Zhen

作者： Wu, Zhen;Liu, Zijian;Liu, Zijian;Zhang, Yanwen;Shi, Xinguo

作者机构：

关键词： Symbiodiniaceae; Sugar transporter gene family; Stresses

期刊名称：CORAL REEFS （ 影响因子：2.9； 五年影响因子：3.5 ）

ISSN： 0722-4028

年卷期： 2025 年 44 卷 1 期

页码：

收录情况： SCI

摘要： Symbiodiniaceae are well-known for their symbiotic relationship with corals, in which they provide sugars to corals in exchange for compounds they required. Therefore, the sugar transport in Symbiodiniaceae is crucial for coral health and survival, especially in the background of global changes. In our study, we performed a genome-wide analysis of the sugar transporter (STP) gene family in Symbiodinium microadriaticum and examined the expression patterns of the identified genes under stresses. We found 22 SmSTP genes with the Sugar_tr domain, belonging to three different groups based on their evolutionary origins. The 22 SmSTP proteins showed variations in their physicochemical properties, exon-intron structures, protein domains, and motifs, but all had transmembrane localization. Moreover, 10 SmSTP genes were differentially expressed under various stress conditions. This is the first study to identify and characterize STPs in Symbiodiniaceae, shedding light on their potential roles in the cnidarian-Symbiodiniaceae symbiosis and its adaptation to global changes.

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