Evolutionary history of the sequestrate genus Rossbeevera (Boletaceae) reveals a new genus Turmalinea and highlights the utility of ITS minisatellite-like insertions for molecular identification

doi:10.3767/003158516X691212

	Evolutionary history of the sequestrate genus Rossbeevera (Boletaceae) reveals a new genus Turmalinea and highlights the utility of ITS minisatellite-like insertions for molecular identification
	Orihara, T.1; Lebel, T.2; Ge, Z. -W.3; Smith, M. E.4; Maekawa, N.5
	2016-12-01
发表期刊	PERSOONIA
卷号	37 期号:1 页码:173-198
摘要	The sequestrate (truffle-like) basidiomycete genera Rossbeevera, Chamonixia, and Octaviania are closely related to the epigeous mushroom genera Leccinum and Leccinellum. In order to elucidate the properties and placement of several undescribed sequestrate taxa in the group and to reveal the evolutionary history of Rossbeevera and its allies, we conducted phylogenetic analyses based on three nuclear (ITS, nLSU, EF-1 alpha) and two mitochondrial DNA loci (ATP6 and mtSSU) as well as precise morphological observations. Phylogenetic analyses of three nuclear loci suggest a complex evolutionary history with sequestrate fruiting bodies present in several clades, including a previously unrecognized sister clade to Rossbeevera. Here we propose a new sequestrate genus, Turmalinea, with four new species and one new subspecies as well as two new species of Rossbeevera. The three-locus nuclear phylogeny resolves species-level divergence within the Rossbeevera-Turmalinea lineage, whereas a separate phylogeny based on two mitochondrial genes corresponds to geographic distance within each species-level lineage and suggests incomplete lineage sorting (ILS) and gene introgression within several intraspecific lineages of Rossbeevera. Furthermore, topological incongruence among the three nuclear single-locus phylogenies suggests that ancient speciation within Rossbeevera probably involved considerable ILS. We also found an unusually long, minisatellite-like insertion within the ITS2 in all Rossbeevera and Turmalinea species. A barcode gap analysis demonstrates that the insertion is more informative for discrimination at various taxonomic levels than the rest of the ITS region and could therefore serve as a unique molecular barcode for these genera.
关键词	Biogeography Cryptic Species Dna Barcoding Hypogeous Fungi Introgression Species Tree
DOI	10.3767/003158516X691212
收录类别	SCI
语种	英语
WOS记录号	WOS:000391598000009
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/45641
专题	中国科学院东亚植物多样性与生物地理学重点实验室
作者单位	1.Kanagawa Prefectural Museum Nat Hist, 499 Iryuda, Odawara, Kanagawa 2500031, Japan 2.Royal Bot Gardens Melbourne, Natl Herbarium Victoria, Private Bag 2000,Birdwood Ave, South Yarra, Vic 3141, Australia 3.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Peoples R China 4.Univ Florida, Dept Plant Pathol, Gainesville, FL 32611 USA 5.Tottori Univ, Fac Agr, Fungus Mushroom Resource & Res Ctr, Tottori 6808553, Japan
推荐引用方式 GB/T 7714	Orihara, T.,Lebel, T.,Ge, Z. -W.,et al. Evolutionary history of the sequestrate genus Rossbeevera (Boletaceae) reveals a new genus Turmalinea and highlights the utility of ITS minisatellite-like insertions for molecular identification[J]. PERSOONIA,2016,37(1):173-198.
APA	Orihara, T.,Lebel, T.,Ge, Z. -W.,Smith, M. E.,&Maekawa, N..(2016).Evolutionary history of the sequestrate genus Rossbeevera (Boletaceae) reveals a new genus Turmalinea and highlights the utility of ITS minisatellite-like insertions for molecular identification.PERSOONIA,37(1),173-198.
MLA	Orihara, T.,et al."Evolutionary history of the sequestrate genus Rossbeevera (Boletaceae) reveals a new genus Turmalinea and highlights the utility of ITS minisatellite-like insertions for molecular identification".PERSOONIA 37.1(2016):173-198.

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