| 摘要: |
| 硅藻是海洋浮游植物主要类群和海洋生态系统的重要初级生产者，其硅质壁的存在使其成为了海洋生物硅的最大贡献者，而且成为海洋碳汇的主要来源。因此，硅质壁形成机制的阐明至关重要。硅酸转运是硅藻硅质壁形成中的关键，阐明其转运机制对建立硅藻代谢途径模型和进一步理解硅藻在海洋生态系统及生物地球化学循环中的作用具有重大意义。硅酸转运子(silicon transporters, SITs)是硅藻中参与硅吸收或转运的一类膜蛋白，因其重要性及多样性成为讨论及研究的焦点。本文综述了硅藻中SITs的分子特征、分子机制、功能多样性及进化关系，为SITs转运机制的研究提供了理论基础。 |
| 关键词: 硅质壁 硅酸转运子 蛋白功能域 基因结构 进化 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金（41876134，41676112，41276124）；天津市海洋资源与化学重点实验室（天津科技大学）开放基金（201805，201801，201806）；天津市高等学校创新团队培养计划（TD12-5003）；天津市131创新团队（20180314）；教育部长江学者奖励计划 |
|
| Progress and perspective of silicon transporters (SITs) in diatoms |
|
Shang xiaomei, Sun jun, Xinyehong, Zhangshan
|
|
Tianjin University of Science and Technology
|
| Abstract: |
| Diatoms are the main group and the major primary producer in the ocean. The presence of siliceous walls not only makes it the largest contributor to marine biological silification, but also makes diatoms a major source of marine biological carbon sink. Therefore, it is very important to elucidate the mechanism of siliceous wall formation. Silicon transport is the key to the formation of diatom siliceous walls. Silicon transporters (SITs) are a class of membrane proteins that are involved in the absorption or transport of silicon in diatoms. Due to their importance and diversity, they become the focus of discussion and research. This paper summarizes the ?molecular characteristics, molecular mechanism, functional diversity and evolutionary relationship of SITs in diatoms, which provides a theoretical basis for the study of SITs transport mechanism. |
| Key words: siliceous wall silicon transporters protein domain gene structure evolution |