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题名: High diversity and widespread occurrence of mitotic spore mats in ectomycorrhizal Pezizales
作者: Healy, R. A.1; Smith, M. E.2; Bonito, G. M.3; Pfister, D. H.4; Ge, Z. -W.2, 5; Guevara, G. G.; Williams, G.3; Stafford, K.3; Kumar, L.1; Lee, T.1; Hobart, C.6; Trappe, J.7; Vilgalys, R.3; Mclaughlin, D. J.1
刊名: MOLECULAR ECOLOGY
关键词: cryptic diversity ; ectomycorrhizal Pezizales ; environmental sequencing ; mitospore ; truffle
英文摘要: Fungal mitospores may function as dispersal units and/ or spermatia and thus play a role in distribution and/or mating of species that produce them. Mitospore production in ectomycorrhizal (EcM) Pezizales is rarely reported, but here we document mitospore production by a high diversity of EcM Pezizales on three continents, in both hemispheres. We sequenced the internal transcribed spacer (ITS) and partial large subunit (LSU) nuclear rDNA from 292 spore mats (visible mitospore clumps) collected in Argentina, Chile, China, Mexico and the USA between 2009 and 2012. We collated spore mat ITS sequences with 105 fruit body and 47 EcM root sequences to generate operational taxonomic units (OTUs). Phylogenetic inferences were made through analyses of both molecular data sets. A total of 48 OTUs from spore mats represented six independent EcM Pezizales lineages and included truffles and cup fungi. Three clades of seven OTUs have no known meiospore stage. Mitospores failed to germinate on sterile media, or form ectomycorrhizas on Quercus, Pinus and Populus seedlings, consistent with a hypothesized role of spermatia. The broad geographic range, high frequency and phylogenetic diversity of spore mats produced by EcM Pezizales suggests that a mitospore stage is important for many species in this group in terms of mating, reproduction and/or dispersal.
出版日期: 2013-03-01
卷号: 22, 期号:6, 页码:1717-1732
语种: 英语
收录类别: SCI
学科分类: Biochemistry & Molecular Biology; Environmental Sciences & Ecology; Evolutionary Biology
ISSN号: 0962-1083
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/16501
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.Univ Minnesota, Dept Plant Biol, St Paul, MN 55108 USA
2.Univ Florida, Dept Plant Pathol, Gainesville, FL 32611 USA
3.Duke Univ, Dept Biol, Durham, NC 27708 USA
4.Harvard Univ, Farlow Herbarium Cryptogam Bot, Cambridge, MA 02143 USA
5.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
6.Univ Sheffield, Sheffield, S Yorkshire, England
7.Oregon State Univ, Dept Forest Ecosyst & Soc, Corvallis, OR 97331 USA

Recommended Citation:
Healy, R. A.; Smith, M. E.; Bonito, G. M.; Pfister, D. H.; Ge, Z. -W.; Guevara, G. G.; Williams, G.; Stafford, K.; Kumar, L.; Lee, T.; Hobart, C.; Trappe, J.; Vilgalys, R.; Mclaughlin, D. J..High diversity and widespread occurrence of mitotic spore mats in ectomycorrhizal Pezizales,MOLECULAR ECOLOGY,2013,22(6):1717-1732
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文件名: Healy-2013-High diversity and w.pdf
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