Molecular phylogeny of eastern Asian species of Amanita (Agaricales, Basidiomycota): taxonomic and biogeographic implications

The phylogenetic relationships, taxonomy and biogeography of the genus Amanita with emphasis on eastern Asian species were estimated using sequence data from both internal transcribed spacer (ITS) regions and large subunit (nLSU) of nuclear ribosomal DNA. The separation of the two traditionally accepted subgenera was not well supported. Each section of Amanita, Vaginatae, Caesareae, Phalloideae, Validae and Amidella was supported as monophyletic by different methods of analysis and data sets of different regions. The monophyly of section Lepidella remained unclear. A few biogeographic and taxonomic implications were inferred: (1) few species of Amanita are widely distributed throughout eastern Asia, Europe and North America. Samples of some previously recognized disjunct species in the Northern Hemisphere were not monophyletic. Thus, the putative intercontinental disjunct distributions of these species were not supported in this study; (2) biogeographic relationships between Amanita of eastern Asia and Europe are relatively close and several taxa are common to both regions, while paired or closely related species between eastern Asia and North America are relatively common, but rarely have been confirmed as disjunct populations of the same species by molecular data yet. A number of species of Amanita in North America labelled with names based on European materials should be regarded as distinct species; (3) a few genetically cryptic species of Amanita in southwestern China need to be delimited; and (4) variations in colour and morphology of the fruit bodies in A. parvipantherina from different localities should be interpreted as modifications of environment.

[1]  Michael P. Cummings,et al.  PAUP* [Phylogenetic Analysis Using Parsimony (and Other Methods)] , 2004 .

[2]  ZHU-LIANG Yang,et al.  New species of Amanita from the eastern Himalaya and adjacent regions , 2004, Mycologia.

[3]  C. Cripps,et al.  Ectomycorrhizae formed in vitro by quaking aspen: including Inocybe lacera and Amanita pantherina , 1995, Mycorrhiza.

[4]  ZHU-LIANG Yang.  Revision of Amanita collections from Jilin Province, northeastern China , 2002 .

[5]  D. Swofford.  PAUP*: Phylogenetic analysis using parsimony (*and other methods), Version 4.0b10 , 2002 .

[6]  Yangxiao Zhu.  Revision of Collections of Amanita (Agaricales) from Hunan Province, Central China , 2002 .

[7]  Z. Yang,et al.  Notes on three white Amanitae of section Phalloideae (Amanitaceae) from China , 2001 .

[8]  R. Vilgalys,et al.  Assessing biogeographic relationships between North American and Chinese macrofungi , 2001 .

[9]  Z. Yang,et al.  Revision of Amanita collections made from Hainan, Southern China , 2001 .

[10]  G. Mueller,et al.  Phylogenetic and biogeographic relationships of eastern Asian and eastern North American disjunct Suillus species (fungi) as inferred from nuclear ribosomal RNA ITS sequences. , 2000, Molecular phylogenetics and evolution.

[11]  Yangxiao Zhu.  ON TAXONOMIC STUDIES OF THE CHINESE AMANITAE , 2000 .

[12]  Yang Zhuliang.  Species diversity of the genus Amanita (Basidiomycetes) in China. , 2000 .

[13]  J. Moncalvo,et al.  MOLECULAR PHYLOGENY OF AMANITA BASED ON LARGE-SUBUNIT RIBOSOMAL DNA SEQUENCES: IMPLICATIONS FOR TAXONOMY AND CHARACTER EVOLUTION , 1999 .

[14]  Michael Weiß,et al.  Molecular phylogenetic studies in the genus Amanita , 1998 .

[15]  Zhu-Liang Yang.  Die Amanita-arten von Sudwestchina , 1997 .

[16]  G. Mueller,et al.  Biogeographic relationships between the macrofungi of temperate eastern Asia and eastern North America , 1997 .

[17]  R. Tulloss.  Type studies in Amanita section Vaginatae. I: Some taxa described in this century (studies 1-23) with notes on description of spores and refractive Hyphae in Amanita , 1994 .

[18]  T. White.  Amplification and direct sequencing of fungal ribosomal RNA genes for phylogenetics , 1990 .

[19]  D. T. Jenkins.  Amanita of North America , 1986 .

[20]  E. Pahlich,et al.  A rapid DNA isolation procedure for small quantities of fresh leaf tissue , 1980 .

[21]  C. Bas.  Morphology and subdivision of Amanita and a monograph of its section Lepidella , 1969 .

[22]  E. Corner,et al.  The genus Amanita in Singapore and Malaya , 1962 .

[23]  T. Hongo.  The Agaricales of Japan I-(1) , 1959 .

[24]  E. Hacskaylo.  Hymenomycetous Species Forming Mycorrhizae with Pinus virginiana , 1955 .

[25]  R. Singer,et al.  The Agaricales@@@The "Agaricales" (Mushrooms) in Modern Taxonomy , 1952 .

[26]  R. Singer.  The Agaricales in modern taxonomy , 1976 .