文献类型：期刊文献

英文题名：Genetic Diversity of Dahongjun, the Commercially Important "Big Red Mushroom'' from Southern China

作者：Li, Mochan[1] Liang, Junfeng[2] Li, Yanchun[3] Feng, Bang[3] Yang, Zhu-Liang[3] James, Timothy Y.[1] Xu, Jianping[1]

第一作者：Li, Mochan

通信作者：Li, MC[1]

机构：[1]McMaster Univ, Dept Biol, Hamilton, ON, Canada;[2]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou, Guangdong, Peoples R China;[3]Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming, Peoples R China

年份：2010

卷号：5

期号：5

外文期刊名：PLOS ONE

收录：;Scopus(收录号：2-s2.0-77956278173);WOS:【SCI-EXPANDED(收录号:WOS:000277776500003)】；

基金：This study was supported by Natural Science and Engineering Research Council of Canada, Premiers Research Excellence Award, the Joint Funds of the National Natural Science Foundation of China and Yunnan Provincial Government (No. U0836604), the National Basic Research Program of China (No. 2009CB522300), and the Key Laboratory of Biodiversity and Biogeography of the Chinese Academy of Sciences (No. 0806371111). The authors confirm that the funding agencies had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

语种：英文

摘要：Background: In southern China, a wild ectomycorrhizal mushroom commonly called "Dahongjun'' or "Big Red Mushroom'' by the local residents, has been harvested, consumed, and/or exported as an exotic food for many years. Although ecologically and economically important, very little is known about this mushroom, including its diversity and population structure. Methodology and Principal Findings: In this study, we analyzed 122 samples from five local populations representing the known distribution ranges of this mushroom in southern China. We investigated the genetic diversity and geographic structure of this mushroom using sequences from four DNA fragments. Our analyses identified that this mushroom contained at least three divergent lineages: one corresponds to a recently described species Russula griseocarnosa from southern China and the remaining two likely represent two novel species. While these lineages were prominently structured geographically based on ITS sequences, evidence for ancient and/or recent gene flow was also identified within individual lineages. In addition, a local population from Ailaoshan in central Yunnan Province where 85 of our 122 specimens came from showed clear evidence of recombination. Conclusion and Significance: The ectomycorrhizal mushroom "Dahongjun'' from southern China is a species complex with at least three divergent lineages. These lineages are largely geographically structured and there is evidence for recombination in nature. Our results indicate mature Dahongjun mushrooms with abundant basidiospores are important for the reproduction of this mushroom in nature and that individual populations of this species should be managed separately.