干旱区生态环境知识资源中心(Arid): Species Delimitation and Conservation in Taxonomically Challenging Lineages: The Case of Two Clades of Capurodendron (Sapotaceae) in Madagascar

Arid

DOI	10.3390/plants10081702
	Species Delimitation and Conservation in Taxonomically Challenging Lineages: The Case of Two Clades of Capurodendron (Sapotaceae) in Madagascar
	Boluda, Carlos G.; Christe, Camille; Randriarisoa, Aina; Gautier, Laurent; Naciri, Yamama
通讯作者	Boluda, CG (corresponding author), Conservatoire & Jardin botan Ville Geneve, Chemin Imperatrice 1, CH-1292 Geneva, Switzerland. ; Boluda, CG (corresponding author), Univ Geneva, Lab Systt Vegetale & Biodivers, Chemin Imperatrice 1, CH-1292 Geneva, Switzerland.
来源期刊	PLANTS-BASEL
EISSN	2223-7747
出版年	2021
卷号	10 期号:8
英文摘要	Capurodendron is the largest endemic genus of plants from Madagascar, with around 76% of its species threatened by deforestation and illegal logging. However, some species are not well circumscribed and many of them remain undescribed, impeding a confident evaluation of their conservation status. Here we focus on taxa delimitation and conservation of two species complexes within Capurodendron: the Arid and Western complexes, each containing undescribed morphologies as well as intermediate specimens alongside well-delimited taxa. To solve these taxonomic issues, we studied 381 specimens morphologically and selected 85 of them to obtain intergenic, intronic, and exonic protein-coding sequences of 794 nuclear genes and 227 microsatellite loci. These data were used to test species limits and putative hybrid patterns using different approaches such as phylogenies, PCA, structure analyses, heterozygosity level, FST, and ABBA-BABA tests. The potential distributions were furthermore estimated for each inferred species. The results show that the Capurodendron Western Complex contains three well-delimited species, C. oblongifolium, C. perrieri, and C. pervillei, the first two hybridizing sporadically with the last and producing morphologies similar to, but genetically distinct from C. pervillei. The Arid Complex shows a more intricate situation, as it contains three species morphologically well-delimited but genetically intermixed. Capurodendron mikeorum nom. prov. is shown to be an undescribed species with a restricted distribution, while C. androyense and C. mandrarense have wider and mostly sympatric distributions. Each of the latter two species contains two major genetic pools, one showing interspecific admixture in areas where both taxa coexist, and the other being less admixed and comprising allopatric populations having fewer contacts with the other species. Only two specimens out of 172 showed clear genetic and morphological signals of recent hybridization, while all the others were morphologically well-delimited, independent of their degree of genetic admixture. Hybridization between Capurodendron androyense and C. microphyllum, the sister species of the Arid Complex, was additionally detected in areas where both species coexist, producing intermediate morphologies. Among the two complexes, species are well-defined morphologically with the exception of seven specimens (1.8%) displaying intermediate patterns and genetic signals compatible with a F1 hybridization. A provisional conservation assessment for each species is provided.
英文关键词	conservation current speciation hybridization species complex species delimitation
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000689860200001
WOS关键词	POPULATION-STRUCTURE ; READ ALIGNMENT ; SPECIATION ; TREE ; INFERENCE ; GENOTYPES ; HISTORY ; PACKAGE ; FORMAT ; DNA
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368553
作者单位	[Boluda, Carlos G.; Christe, Camille; Randriarisoa, Aina; Gautier, Laurent; Naciri, Yamama] Conservatoire & Jardin botan Ville Geneve, Chemin Imperatrice 1, CH-1292 Geneva, Switzerland; [Boluda, Carlos G.; Christe, Camille; Randriarisoa, Aina; Gautier, Laurent; Naciri, Yamama] Univ Geneva, Lab Systt Vegetale & Biodivers, Chemin Imperatrice 1, CH-1292 Geneva, Switzerland
推荐引用方式 GB/T 7714	Boluda, Carlos G.,Christe, Camille,Randriarisoa, Aina,et al. Species Delimitation and Conservation in Taxonomically Challenging Lineages: The Case of Two Clades of Capurodendron (Sapotaceae) in Madagascar[J],2021,10(8).
APA	Boluda, Carlos G.,Christe, Camille,Randriarisoa, Aina,Gautier, Laurent,&Naciri, Yamama.(2021).Species Delimitation and Conservation in Taxonomically Challenging Lineages: The Case of Two Clades of Capurodendron (Sapotaceae) in Madagascar.PLANTS-BASEL,10(8).
MLA	Boluda, Carlos G.,et al."Species Delimitation and Conservation in Taxonomically Challenging Lineages: The Case of Two Clades of Capurodendron (Sapotaceae) in Madagascar".PLANTS-BASEL 10.8(2021).