Lineage-Specific Reductions of Plastid Genomes in an Orchid Tribe with Partially and Fully Mycoheterotrophic Species

doi:10.1093/gbe/evw144

	Lineage-Specific Reductions of Plastid Genomes in an Orchid Tribe with Partially and Fully Mycoheterotrophic Species
	Feng, Yan-Lei ; Wicke, Susann 1; Li, Jian-Wu ; Han, Yu 3; Lin, Choun-Sea ; Li, De-Zhu ; Zhou, Ting-Ting ; Huang, Wei-Chang ; Huang, Lu-Qi ; Jin, Xiao-Hua
	2016
发表期刊	GENOME BIOLOGY AND EVOLUTION
ISSN	1759-6653
卷号	8 期号:7 页码:2164-2175
摘要	The plastid genome (plastome) of heterotrophic plants like mycoheterotrophs and parasites shows massive gene losses in consequence to the relaxation of functional constraints on photosynthesis. To understand the patterns of this convergent plastome reduction syndrome in heterotrophic plants, we studied 12 closely related orchids of three different lifeforms from the tribe Neottieae (Orchidaceae). We employ a comparative genomics approach to examine structural and selectional changes in plastomes within Neottieae. Both leafy and leafless heterotrophic species have functionally reduced plastid genome. Our analyses show that genes for the NAD(P)H dehydrogenase complex, the photosystems, and the RNA polymerase have been lost functionally multiple times independently. The physical reduction proceeds in a highly lineage-specific manner, accompanied by structural reconfigurations such as inversions or modifications of the large inverted repeats. Despite significant but minor selectional changes, all retained genes continue to evolve under purifying selection. All leafless Neottia species, including both visibly green and nongreen members, are fully mycoheterotrophic, likely evolved from leafy and partially mycoheterotrophic species. The plastomes of Neottieae span many stages of plastome degradation, including the longest plastome of a mycoheterotroph, providing invaluable insights into the mechanisms of plastome evolution along the transition from autotrophy to full mycoheterotrophy.
关键词	heterotrophy plastid genome reduction Neottieae Orchidaceae relaxed selection
学科领域	Evolutionary Biology ; Genetics & Heredity
DOI	10.1093/gbe/evw144
收录类别	SCI
语种	英语
WOS关键词	NEOTTIA-NIDUS-AVIS ; PHYLOGENETIC ANALYSIS ; PARASITIC PLANT ; NONPHOTOSYNTHETIC INDIVIDUALS ; MORPHOLOGICAL CHARACTERS ; HETEROTROPHIC ORCHIDS ; CORALLORHIZA-TRIFIDA ; MOLECULAR EVOLUTION ; LIMODORUM-ABORTIVUM ; MAXIMUM-LIKELIHOOD
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000381502000008
出版者	OXFORD UNIV PRESS
文献子类	Article
出版地	OXFORD
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31470299] ; Chinese Special Fund for Medicine Research in the Public Interest [201407003]
作者邮箱	xiaohuajin@ibcas.ac.cn
作品OA属性	Green Published, Green Submitted, gold
引用统计	被引频次：70[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25046
专题	系统与进化植物学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing, Peoples R China 2.Univ Munster, Inst Evolut & Biodivers, Munster, Germany 3.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Mengla, Yunnan, Peoples R China 4.Nanchang Univ, Nanchang, Jiangxi, Peoples R China 5.Acad Sinica, Agr Biotechnol Res Ctr, Taipei, Taiwan 6.Kunming, Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming, Yunnan, Peoples R China 7.Chenshan Shanghai Bot Garden, Shanghai, Songjiang, Peoples R China 8.China Acad Chinese Med Sci, Natl Resource Ctr Chinese Mat Med, Beijing, Peoples R China 9.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Feng, Yan-Lei,Wicke, Susann,Li, Jian-Wu,et al. Lineage-Specific Reductions of Plastid Genomes in an Orchid Tribe with Partially and Fully Mycoheterotrophic Species[J]. GENOME BIOLOGY AND EVOLUTION,2016,8(7):2164-2175.
APA	Feng, Yan-Lei.,Wicke, Susann.,Li, Jian-Wu.,Han, Yu.,Lin, Choun-Sea.,...&Jin, Xiao-Hua.(2016).Lineage-Specific Reductions of Plastid Genomes in an Orchid Tribe with Partially and Fully Mycoheterotrophic Species.GENOME BIOLOGY AND EVOLUTION,8(7),2164-2175.
MLA	Feng, Yan-Lei,et al."Lineage-Specific Reductions of Plastid Genomes in an Orchid Tribe with Partially and Fully Mycoheterotrophic Species".GENOME BIOLOGY AND EVOLUTION 8.7(2016):2164-2175.

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