The late embryogenesis abundant gene family in tea plant (Camellia sinensis): Genome-wide characterization and expression analysis in response to cold and dehydration stress.
The late embryogenesis abundant gene family in tea plant (Camellia sinensis): Genome-wide characterization and expression analysis in response to cold and dehydration stress.
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DOI：
10.1016/j.plaphy.2018.12.009
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发表时间：
2019-02
期刊：
影响因子：
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通讯作者：
Weidong Wang;Tong Gao;Jiangfei Chen;Jiankun Yang;Huiyu Huang;Youben Yu
中科院分区：
文献类型：
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作者：
Weidong Wang;Tong Gao;Jiangfei Chen;Jiankun Yang;Huiyu Huang;Youben Yu
晚期胚胎发生丰富 (LEA) 蛋白是一个大型且高度多样化的多肽家族，在植物生长、发育和胁迫反应中发挥重要作用。目前，LEA基因家族已在许多植物物种中得到鉴定和系统表征。然而，茶树中的LEA基因家族尚未被揭示，该家族成员的生物学功能仍不清楚。本研究通过全基因组研究从茶树中鉴定出 33CsLEA 基因，并根据系统发育关系、基因结构和蛋白质保守基序分析将它们分为七组。此外，表达分析表明，CsLEA基因在一种或多种组织中特异表达，并在寒冷和脱水胁迫下显着表达，这表明CsLEA基因在茶树生长、发育以及对寒冷和脱水胁迫的响应中发挥重要作用。此外，潜在的转录调控网络，包括DREB/CBF、MYB、bZIP、bHLH、BPC和其他转录因子，与CsLEA基因的表达直接相关，这些基因在上述过程中可能普遍存在且重要。这项研究有助于增加我们对 CsLEA 蛋白及其对茶树抗逆性的贡献的了解。
Late embryogenesis abundant (LEA) proteins are a large and highly diverse family of polypeptides that play important roles in plant growth, development and stress responses. At present,LEAgene families have been identified and systematically characterized in many plant species. However, theLEAgene family in tea plant has not been revealed, and the biological functions of the members of this family remain unknown. In this study, 33CsLEAgenes were identified from tea plant via a genome-wide study, and they were clustered into seven groups according to analyses of their phylogenetic relationships, gene structures and protein conserved motifs. In addition, expression analysis revealed that theCsLEAgenes were specifically expressed in one or more tissues and significantly induced under cold and dehydration stresses, implying thatCsLEAgenes play important roles in tea plant growth, development and response to cold and dehydration stresses. Furthermore, a potential transcriptional regulatory network, including DREB/CBF, MYB, bZIP, bHLH, BPC and other transcription factors, is directly associated with the expression ofCsLEAgenes, which may be ubiquitous and important in the above mentioned processes. This study could help to increase our understanding of CsLEA proteins and their contributions to stress tolerance in tea plant.