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Citation for Study 13538

Citation title: "A global meta-analysis of Tuber ITS rDNA sequences: species diversity, host associations and long-distance dispersal".

Study name: "A global meta-analysis of Tuber ITS rDNA sequences: species diversity, host associations and long-distance dispersal".

This study is part of submission 13538 (Status: Published).

Citation

Bonito G.M. 2010. A global meta-analysis of Tuber ITS rDNA sequences: species diversity, host associations and long-distance dispersal. Molecular Ecology, 19(22): 4994-5008.

Authors

• Bonito G.M. (submitter) 5178845948

Abstract

Truffles (Tuber) are ectomycorrhizal fungi characterized by hypogeous fruitbodies. Their biodiversity, host associations and geographical distributions are not well documented. ITS rDNA sequences of Tuber are commonly recovered from molecular surveys of fungal communities, but most remain insufficiently identified making it difficult to determine whether these sequences represent conspecific or novel taxa. In this meta-analysis, over 2000 insufficiently identified Tuber sequences from 76 independent studies were analysed within a phylogenetic framework. Species ranges, host associates, geographical distributions and intra- and interspecific ITS variability were assessed. Over 99% of the insufficiently identified Tuber sequences grouped within clades composed of species with little culinary value (Maculatum, Puberulum and Rufum). Sixty-four novel phylotypes were distinguished including 36 known only from ectomycorrhizae or soil. Most species of Tuber showed 1-3% intraspecific ITS variability and >4% interspecific ITS sequence variation. We found 123 distinct phylotypes based on 96% ITS sequence similarity and estimated that Tuber contains a minimum of 180 species. Based on this meta-analysis, species in Excavatum, Maculatum and Rufum clades exhibit preference for angiosperm hosts, whereas those in the Gibbosum clade are preferential towards gymnosperms. Sixteen Tuber species (>13% of the known diversity) have putatively been introduced to continents or islands outside their native range.

Keywords

biodiversity, biogeography, hypogeous fungi, invasive biology, ITS rDNA, phylog- eny, Tuber

External links

• DOI: 10.1111/j.1365-294X.2010.04855.x
• PMID: 2104
• Other URL: http://www.ncbi.nlm.nih.gov/pubmed/21040049

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S13538
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref21463,
  	 author = {Gregory Michael Bonito},
  	 title = {A global meta-analysis of Tuber ITS rDNA sequences: species diversity, host associations and long-distance dispersal},
  	 year = {2010},
  	 keywords = {biodiversity, biogeography, hypogeous fungi, invasive biology, ITS rDNA, phylog- eny, Tuber},
  	 doi = {10.1111/j.1365-294X.2010.04855.x},
  	 url = {http://www.ncbi.nlm.nih.gov/pubmed/21040049},
  	 pmid = {2104},
  	 journal = {Molecular Ecology},
  	 volume = {19},
  	 number = {22},
  	 pages = {4994--5008},
  	 abstract = {Truffles (Tuber) are ectomycorrhizal fungi characterized by hypogeous fruitbodies. Their biodiversity, host associations and geographical distributions are not well documented. ITS rDNA sequences of Tuber are commonly recovered from molecular surveys of fungal communities, but most remain insufficiently identified making it difficult to determine whether these sequences represent conspecific or novel taxa. In this meta-analysis, over 2000 insufficiently identified Tuber sequences from 76 independent studies were analysed within a phylogenetic framework. Species ranges, host associates, geographical distributions and intra- and interspecific ITS variability were assessed. Over 99% of the insufficiently identified Tuber sequences grouped within clades composed of species with little culinary value (Maculatum, Puberulum and Rufum). Sixty-four novel phylotypes were distinguished including 36 known only from ectomycorrhizae or soil. Most species of Tuber showed 1-3% intraspecific ITS variability and >4% interspecific ITS sequence variation. We found 123 distinct phylotypes based on 96% ITS sequence similarity and estimated that Tuber contains a minimum of 180 species. Based on this meta-analysis, species in Excavatum, Maculatum and Rufum clades exhibit preference for angiosperm hosts, whereas those in the Gibbosum clade are preferential towards gymnosperms. Sixteen Tuber species (>13% of the known diversity) have putatively been introduced to continents or islands outside their native range.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 21463
  AU  - Bonito,Gregory Michael
  T1  - A global meta-analysis of Tuber ITS rDNA sequences: species diversity, host associations and long-distance dispersal
  PY  - 2010
  KW  - biodiversity
  KW  - biogeography
  KW  - hypogeous fungi
  KW  - invasive biology
  KW  - ITS rDNA
  KW  - phylog- eny
  KW  - Tuber
  UR  - http://www.ncbi.nlm.nih.gov/pubmed/21040049
  N2  - Truffles (Tuber) are ectomycorrhizal fungi characterized by hypogeous fruitbodies. Their biodiversity, host associations and geographical distributions are not well documented. ITS rDNA sequences of Tuber are commonly recovered from molecular surveys of fungal communities, but most remain insufficiently identified making it difficult to determine whether these sequences represent conspecific or novel taxa. In this meta-analysis, over 2000 insufficiently identified Tuber sequences from 76 independent studies were analysed within a phylogenetic framework. Species ranges, host associates, geographical distributions and intra- and interspecific ITS variability were assessed. Over 99% of the insufficiently identified Tuber sequences grouped within clades composed of species with little culinary value (Maculatum, Puberulum and Rufum). Sixty-four novel phylotypes were distinguished including 36 known only from ectomycorrhizae or soil. Most species of Tuber showed 1-3% intraspecific ITS variability and >4% interspecific ITS sequence variation. We found 123 distinct phylotypes based on 96% ITS sequence similarity and estimated that Tuber contains a minimum of 180 species. Based on this meta-analysis, species in Excavatum, Maculatum and Rufum clades exhibit preference for angiosperm hosts, whereas those in the Gibbosum clade are preferential towards gymnosperms. Sixteen Tuber species (>13% of the known diversity) have putatively been introduced to continents or islands outside their native range.
  L3  - 10.1111/j.1365-294X.2010.04855.x
  JF  - Molecular Ecology
  VL  - 19
  IS  - 22
  SP  - 4994
  EP  - 5008
  ER  -