藻类响应缺铁胁迫的光合机制研究进展

doi:10.11924/j.issn.1000-6850.casb2021-1142

中国农学通报 ›› 2022, Vol. 38 ›› Issue (17): 35-43.doi: 10.11924/j.issn.1000-6850.casb2021-1142

所属专题：生物技术

藻类响应缺铁胁迫的光合机制研究进展

徐明昱¹(), 白天宇¹, 王佳悦¹, 田立荣¹^,²()

¹河北师范大学生命科学学院分子细胞生物学重点实验室,石家庄 050024
²河北省细胞信号与环境适应协同创新中心,石家庄 050024

收稿日期:2021-11-29 修回日期:2022-03-05 出版日期:2022-06-15 发布日期:2022-07-08
通讯作者: 田立荣
作者简介:徐明昱,女,1996年出生,河北栾城人,在读硕士,研究方向：藻类光合作用。通信地址：050024 河北石家庄市裕华区南二环东路20号河北师范大学生命科学学院,Tel：0311-80787512,E-mail： xumingyu1023@163.com。
基金资助:
河北省自然科学基金面上项目“红藻PBS-RCs超分子复合物的体外纯化与功能研究”(C2020205051);国家自然科学基金青年项目“温泉红藻藻胆体-光系统I结合应对缺铁胁迫的能量补偿机制研究”(32100189);河北师范大学博士（后）基金项目“光合电子传递反应中超大膜蛋白复合物的结构与功能研究”(L2020B20)

Photosynthetic Mechanism of Algae in Response to Iron Deficiency Stress: Research Progress

XU Mingyu¹(), BAI Tianyu¹, WANG Jiayue¹, TIAN Lirong¹^,²()

¹Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang 050024
²Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang 050024

Received:2021-11-29 Revised:2022-03-05 Online:2022-06-15 Published:2022-07-08
Contact: TIAN Lirong

摘要/Abstract

摘要：

为了深入了解缺铁胁迫对藻类光合作用的影响,本文归纳了铁在光合电子传递链中的重要作用,总结了铁缺乏对藻类光合原件的破坏作用以及藻类的光合响应机制。围绕光合电子传递链,对容易受到铁缺乏影响的叶绿素、光系统、捕光天线等光合元件进行了归纳总结。研究得出,缺铁胁迫严重破坏藻类叶绿素的生物合成,影响光系统I(PSI)、光系统II(PSII)及其外周捕光天线的含量、活性和蛋白稳定性。藻类通过在光系统周围产生新的铁诱导蛋白或功能替代蛋白,调整光系统与捕光天线之间的结构与功能,应对缺铁胁迫。

关键词: 缺铁胁迫, 光合作用, 铁诱导蛋白, 光系统I, 捕光天线

Abstract:

In order to deep understand the effect of iron deficiency stress on photosynthesis in algae, the authors summarized the important role of iron in photosynthetic electron transport chain, and concluded the destruction effect of iron deficiency on photosynthetic elements and the photosynthetic response mechanism of algae. Focused on the photosynthetic electron transport chain, the photosynthetic elements which were easily affected by iron deficiency, such as chlorophylls, photosystems and light-harvesting antennas, were summarized. This study concluded that iron deficiency stress could severely damage chlorophyll biosynthesis and affect the contents, activity and protein stability of photosystem I (PSI), photosystem II (PSII) and their peripheral light-harvesting antennas in algae. Algae can adjust the structure and function between the photosystems and their peripheral light-harvesting antennas by generating new iron-inducible proteins or functional replacement proteins around PSI/PSII to cope with iron deficiency stress.

Key words: iron deficiency stress, photosynthesis, iron-inducible protein, photosystem I, light-harvesting antennas

中图分类号:

S184

徐明昱, 白天宇, 王佳悦, 田立荣. 藻类响应缺铁胁迫的光合机制研究进展[J]. 中国农学通报, 2022, 38(17): 35-43.

XU Mingyu, BAI Tianyu, WANG Jiayue, TIAN Lirong. Photosynthetic Mechanism of Algae in Response to Iron Deficiency Stress: Research Progress[J]. Chinese Agricultural Science Bulletin, 2022, 38(17): 35-43.

图/表 4

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物种	光合响应元件	主要功能	参考文献
蓝细菌(Synechocystis sp. PCC 6803)	IsiA IsiB	在铁限制条件下作为PSI天线替代含铁的铁氧还蛋白进行电子传递	[30]、[31]、[32]、[33] [34]、[35]、[36]
蓝细菌(S. elongatus PCC 6301)	IdiA	保护PSII受体侧免受氧化应激	[37]、[38]、[39]
盐生杜氏藻(Dunaliella salina)	Tidi	帮助PSI捕获光能	[40]
衣藻(Chlamydomonas reinhardtii)	LHCI PsaC/PsaD PsaE LhcSR3	帮助PSI捕获光能 PSI中FA和FB的载脂蛋白稳定PsaC和PSI核心之间的相互作用参与NPQ过程,保护光合装置免受氧化损伤	[41] [42] [42] [43]、[44]
硅藻(Phaeodactylum tricornutum) (Thalassiosira oceanica)	PSI Cyt b₆f	将光能转化为化学能介导PSII和PSI之间的电子传递,缺铁时PSI和Cyt b₆f表达量下调	[45] [28]、[46]、[47]

物种	光合响应元件	主要功能	参考文献
蓝细菌(Synechocystis sp. PCC 6803)	IsiA IsiB	在铁限制条件下作为PSI天线替代含铁的铁氧还蛋白进行电子传递	[30]、[31]、[32]、[33] [34]、[35]、[36]
蓝细菌(S. elongatus PCC 6301)	IdiA	保护PSII受体侧免受氧化应激	[37]、[38]、[39]
盐生杜氏藻(Dunaliella salina)	Tidi	帮助PSI捕获光能	[40]
衣藻(Chlamydomonas reinhardtii)	LHCI PsaC/PsaD PsaE LhcSR3	帮助PSI捕获光能 PSI中FA和FB的载脂蛋白稳定PsaC和PSI核心之间的相互作用参与NPQ过程,保护光合装置免受氧化损伤	[41] [42] [42] [43]、[44]
硅藻(Phaeodactylum tricornutum) (Thalassiosira oceanica)	PSI Cyt b₆f	将光能转化为化学能介导PSII和PSI之间的电子传递,缺铁时PSI和Cyt b₆f表达量下调	[45] [28]、[46]、[47]

藻类响应缺铁胁迫的光合机制研究进展

Photosynthetic Mechanism of Algae in Response to Iron Deficiency Stress: Research Progress

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