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Title: DNA Sequence Analyses Reveal Abundant Diversity, Endemism and Evidence for Asian Origin of the Porcini Mushrooms

Journal Article · · PLoS ONE
 [1];  [2];  [1];  [1];  [3];  [4];  [5];  [3]
  1. Chinese Academy of Sciences, Kunming (China); Graduate University of Chinese Academy of Sciences, Beijing (China)
  2. McMaster University, Hamilton, ON (Canada)
  3. Chinese Academy of Sciences, Kunming (China)
  4. Jilin Agricultural University, Changchun (China)
  5. Philipps-University Marburg (Germany)

The wild gourmet mushroom Boletus edulis and its close allies are of significant ecological and economic importance. They are found throughout the Northern Hemisphere, but despite their ubiquity there are still many unresolved issues with regard to the taxonomy, systematics and biogeography of this group of mushrooms. Most phylogenetic studies of Boletus so far have characterized samples from North America and Europe and little information is available on samples from other areas, including the ecologically and geographically diverse regions of China. Here we analyzed DNA sequence variation in three gene markers from samples of these mushrooms from across China and compared our findings with those from other representative regions. Our results revealed fifteen novel phylogenetic species (about one-third of the known species) and a newly identified lineage represented by Boletus sp. HKAS71346 from tropical Asia. The phylogenetic analyses support eastern Asia as the center of diversity for the porcini sensu stricto clade. Within this clade, B. edulis is the only known holarctic species. The majority of the other phylogenetic species are geographically restricted in their distributions. Furthermore, molecular dating and geological evidence suggest that this group of mushrooms originated during the Eocene in eastern Asia, followed by dispersal to and subsequent speciation in other parts of Asia, Europe, and the Americas from the middle Miocene through the early Pliocene. In contrast to the ancient dispersal of porcini in the strict sense in the Northern Hemisphere, the occurrence of B. reticulatus and B. edulis sensu lato in the Southern Hemisphere was probably due to recent human-mediated introductions.

Research Organization:
Chinese Academy of Sciences, Kunming (China)
Sponsoring Organization:
National Natural Science Foundation of China (NSFC); Yunnan Provincial Government; National Basic Research Program of China; Chinese Academy of Sciences
DOE Contract Number:
U0836604; 2009CB522300; 2009-LSF-GBOWS-01
OSTI ID:
1627520
Journal Information:
PLoS ONE, Vol. 7, Issue 5; ISSN 1932-6203
Publisher:
Public Library of Science
Country of Publication:
United States
Language:
English

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Cited By (14)

Circumscription and Taxonomic Arrangement of Nigroboletus roseonigrescens Gen. Et Sp. Nov., a New Member of Boletaceae from Tropical South–Eastern China journal August 2015
Species Diversity, Phylogeny, Divergence Time, and Biogeography of the Genus Sanghuangporus (Basidiomycota) journal April 2019
The genus Phylloporus (Boletaceae, Boletales) from China: morphological and multilocus DNA sequence analyses journal July 2012
A new species of Boletellus (Boletaceae, Basidiomycota) from tropical India journal December 2018
Species diversity, distribution patterns, and substrate specificity of Strobilurus journal May 2018
Fungal DNA Barcoding book June 2015
Phylogeny, biogeography and taxonomic re-assessment of Multifurca (Russulaceae, Russulales) using three-locus data journal November 2018
Phylogeny and species delimitation of Flammulina: taxonomic status of winter mushroom in East Asia and a new European species identified using an integrated approach journal June 2018
One hundred noteworthy boletes from China journal October 2016
Spongispora temasekensis , a new boletoid genus and species from Singapore journal September 2018
Molecular phylogenetic analyses redefine seven major clades and reveal 22 new generic clades in the fungal family Boletaceae journal March 2014
Psiloboletinus is an independent genus sister to Suillus journal January 2020
Ecological and physical barriers shape genetic structure of the Alpine porcini (Boletus reticuloceps) journal December 2016
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