Phylogenomics, plastome degradation and mycoheterotrophy evolution of Neottieae (Orchidaceae), with emphasis on the systematic position and Loess Plateau-Changbai Mountains disjunction of Diplandrorchis

doi:10.1186/s12870-022-03906-0

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	Phylogenomics, plastome degradation and mycoheterotrophy evolution of Neottieae (Orchidaceae), with emphasis on the systematic position and Loess Plateau-Changbai Mountains disjunction of Diplandrorchis
	Peng, Huan-Wen ; Lian, Lian 4; Zhang, Jun 1; Erst, Andrey S.; Wang, Wei 4
刊名	BMC PLANT BIOLOGY
	2022
卷号	22 期号:1
关键词	Biogeography Loess Plateau-Changbai Mountains disjunction Mycoheterotrophy Orchidaceae Phylogenomics Plastome degradation
ISSN号	1471-2229
DOI	10.1186/s12870-022-03906-0
文献子类	Article
英文摘要	Background Mycoheterotrophy is a unique survival strategy adapted to dense forests and has attracted biologists' attention for centuries. However, its evolutionary origin and related plastome degradation are poorly understood. The tribe Neottieae contains various nutrition types, i.e., autotrophy, mixotrophy, and mycoheterotrophy. Here, we present a comprehensive phylogenetic analysis of the tribe based on plastome and nuclear ITS data. We inferred the evolutionary shift of nutrition types, constructed the patterns of plastome degradation, and estimated divergence times and ancestral ranges. We also used an integration of molecular dating and ecological niche modeling methods to investigate the disjunction between the Loess Plateau and Changbai Mountains in Diplandrorchis, a mycoheterotrophic genus endemic to China that was included in a molecular phylogenetic study for the first time. Results Diplandrorchis was imbedded within Neottia and formed a clade with four mycoheterotrophic species. Autotrophy is the ancestral state in Neottieae, mixotrophy independently originated at least five times, and three shifts from mixotrophy to mycoheterotrophy independently occurred. The five mixotrophic lineages possess all plastid genes or lost partial/all ndh genes, whereas each of the three mycoheterotroph lineages has a highly reduced plastome: one lost part of its ndh genes and a few photosynthesis-related genes, and the other two lost almost all ndh, photosynthesis-related, rpo, and atp genes. These three mycoheterotrophic lineages originated at about 26.40 Ma, 25.84 Ma, and 9.22 Ma, respectively. Diplandrorchis had presumably a wide range in the Pliocene and migrated southward in the Pleistocene. Conclusions The Pleistocene climatic fluctuations and the resultant migration resulted in the Loess Plateau-Changbai Mountains disjunction of Diplandrorchis. In the evolution of mycoheterotrophic lineages, the loss of plastid-encoded genes and plastome degradation are staged and irreversible, constraining mycoheterotrophs to inhabit understories with low light levels. Accordingly, the rise of local forests might have promoted the origin of conditions in which mycoheterotrophy is advantageous.
学科主题	Plant Sciences
出版地	LONDON
WOS关键词	FOUNDER-EVENT SPECIATION ; HISTORICAL BIOGEOGRAPHY ; SAMPLE-SIZE ; MODEL ; PERFORMANCE ; CLIMATE ; PHOTOSYNTHESIS ; HEMISPHERE ; SELECTION ; GENOME
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	BMC
WOS记录号	WOS:000876996900002
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences [XDB31030000] ; National Natural Science Foundation of China [32170210, 32011530072] ; K.C. Wong Education Foundation [GJTD-2020-05, ....-.21-121011290024-5]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/29042]
专题	系统与进化植物学国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Erst, Andrey S.] Russian Acad Sci, Cent Siberian Bot Garden, Zolotodolinskaya Str 101, Novosibirsk 630090, Russia 3.Beihua Univ, Forestry Coll, Jilin 132013, Jilin, Peoples R China 4.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Peng, Huan-Wen,Lian, Lian,Zhang, Jun,et al. Phylogenomics, plastome degradation and mycoheterotrophy evolution of Neottieae (Orchidaceae), with emphasis on the systematic position and Loess Plateau-Changbai Mountains disjunction of Diplandrorchis[J]. BMC PLANT BIOLOGY,2022,22(1).
APA	Peng, Huan-Wen,Lian, Lian,Zhang, Jun,Erst, Andrey S.,&Wang, Wei.(2022).Phylogenomics, plastome degradation and mycoheterotrophy evolution of Neottieae (Orchidaceae), with emphasis on the systematic position and Loess Plateau-Changbai Mountains disjunction of Diplandrorchis.BMC PLANT BIOLOGY,22(1).
MLA	Peng, Huan-Wen,et al."Phylogenomics, plastome degradation and mycoheterotrophy evolution of Neottieae (Orchidaceae), with emphasis on the systematic position and Loess Plateau-Changbai Mountains disjunction of Diplandrorchis".BMC PLANT BIOLOGY 22.1(2022).