The Parallel Molecular Adaptations to the Antarctic Cold Environment in Two Psychrophilic Green Algae

doi:10.1093/gbe/evz104

	The Parallel Molecular Adaptations to the Antarctic Cold Environment in Two Psychrophilic Green Algae
	Zhang, Zhenhua 1; Qu, Changfeng 2,3; Yao, Ru 1; Nie, Yuan 1; Xu, Chenjie 1; Miao, Jinlai 2,3; Zhong, Bojian 1
刊名	GENOME BIOLOGY AND EVOLUTION
	2019-07
卷号	11 期号:7 页码:1897-1908
关键词	Antarctic psychrophilic green algae positive selection molecular convergence adaptation
ISSN号	1759-6653
DOI	10.1093/gbe/evz104
英文摘要	Psychrophilic green algae from independent phylogenetic lines thrive in the polar extreme environments, but the hypothesis that their psychrophilic characteristics appeared through parallel routes of molecular evolution remains untested. The recent surge of transcriptome data enables large-scale evolutionary analyses to investigate the genetic basis for the adaptations to the Antarctic extreme environment, and the identification of the selective forces that drive molecular evolution is the foundation to understand the strategies of cold adaptation. Here, we conducted transcriptome sequencing of two Antarctic psychrophilic green algae (Chlamydomonas sp. ICE-L and Tetrabaena socialis) and performed positive selection and convergent substitution analyses to investigate their molecular convergence and adaptive strategies against extreme cold conditions. Our results revealed considerable shared positively selected genes and significant evidence of molecular convergence in two Antarctic psychrophilic algae. Significant evidence of positive selection and convergent substitution were detected in genes associated with photosynthetic machinery, multiple antioxidant systems, and several crucial translation elements in Antarctic psychrophilic algae. Our study reveals that the psychrophilic algae possess more stable photosynthetic apparatus and multiple protective mechanisms and provides new clues of parallel adaptive evolution in Antarctic psychrophilic green algae.
资助项目	China Ocean Mineral Resources RD Association[DY135-B2-14]
WOS关键词	PHYLOGENETIC ANALYSIS ; ADAPTIVE PATTERNS ; GENOME REVEALS ; PHOTOSYSTEM-II ; SEA-ICE ; ACCLIMATION ; RESISTANCE ; EVOLUTION ; PHOTOINHIBITION ; TRANSCRIPTOME
WOS研究方向	Evolutionary Biology ; Genetics & Heredity
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000484039500017
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/30062]
专题	自然资源部第一海洋研究所
通讯作者	Zhong, Bojian
作者单位	1.Nanjing Normal Univ, Coll Life Sci, Jiangsu Key Lab Biodivers & Biotechnol, Nanjing, Jiangsu, Peoples R China 2.Minist Nat Resources, Inst Oceanog 1, Qingdao, Shandong, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Drugs & Bioprod, Qingdao, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhenhua,Qu, Changfeng,Yao, Ru,et al. The Parallel Molecular Adaptations to the Antarctic Cold Environment in Two Psychrophilic Green Algae[J]. GENOME BIOLOGY AND EVOLUTION,2019,11(7):1897-1908.
APA	Zhang, Zhenhua.,Qu, Changfeng.,Yao, Ru.,Nie, Yuan.,Xu, Chenjie.,...&Zhong, Bojian.(2019).The Parallel Molecular Adaptations to the Antarctic Cold Environment in Two Psychrophilic Green Algae.GENOME BIOLOGY AND EVOLUTION,11(7),1897-1908.
MLA	Zhang, Zhenhua,et al."The Parallel Molecular Adaptations to the Antarctic Cold Environment in Two Psychrophilic Green Algae".GENOME BIOLOGY AND EVOLUTION 11.7(2019):1897-1908.