Genome-Wide Identification, Expression Profiling, and Evolution of Phosphate Transporter Gene Family in Green Algae

文献类型： 外文期刊

第一作者： Wang, Long

作者： Wang, Long;Xiao, Liang;Yang, Haiyan;Chen, Guanglei;Zhu, Yiyong;Wang, Long;Zhao, Hongyu;Zeng, Houqing

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关键词： phosphate transporters; phylogenetic analysis; expression pattern; Chlamydomonas; green algae

期刊名称：FRONTIERS IN GENETICS （ 影响因子：4.599； 五年影响因子：4.888 ）

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年卷期： 2020 年 11 卷

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收录情况： SCI

摘要： Phosphorus (P) is an essential nutrient for plant growth and development. Phosphate transporters (PHTs) aretrans-membrane proteins that mediate the uptake and translocation of phosphate (Pi) in green plants. The PHT family including PHT1, PHT2, PHT3 and PHT4 subfamilies are well-studied in land plants; however, PHT genes in green algae are poorly documented and not comprehensively identified. Here, we analyzed the PHTs in a model green algaChlamydomonas reinhardtiiand found 25 putative PHT genes, which can be divided into four subfamilies. The subfamilies of CrPTA, CrPTB, CrPHT3, and CrPHT4 contain four, eleven, one, and nine genes, respectively. The structure, chromosomal distribution, subcellular localization, duplication, phylogenies, and motifs of these genes were systematically analyzedin silico. Expression profile analysis showed that CrPHT genes displayed differential expression patterns under P starvation condition. The expression levels ofCrPTA1andCrPTA3were down-regulated, while the expression of mostCrPTBgenes was up-regulated under P starvation, which may be controlled by CrPSR1. The transcript abundance of mostCrPHT3andCrPHT4genes was not significantly affected by P starvation exceptCrPHT4-3,CrPHT4-4, andCrPHT4-6. Our results provided basic information for understanding the evolution and features of the PHT family in green algae.

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