Geographic origins and phylogenetic affinities of the putative Hawaiian endemic Rhodocollybia laulaha

M. R. Keiirle; P. G. Avis; D. E. Desjardin; D. E. Hemmes; G. M. Mueller

doi:10.5248/112.463

Geographic origins and phylogenetic affinities of the putative Hawaiian endemic Rhodocollybia laulaha

M. R. Keiirle, P. G. Avis, D. E. Desjardin, D. E. Hemmes, G. M. Mueller

Program in Biological Sciences

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The Hawaiian mushroom Rhodocollybia laulaha was selected as a model to investigate patterns of gene flow between geographically isolated fungal populations from ecologically and bioclimatically varied sites. Its morphology (distinctive when compared to other members of the genus) and affinity for endemic Hawaiian forest suggested that it was endemic to Hawaii. However, speculation as to its closest nonHawaiian relative and its overall placement within the genus was based on mostly anecdotal evidence. The present morphological and genetic research identifies a wellsupported clade comprising R. laulaha individuals from across the Hawaiian Islands, reveals R. lignitilis (described in 2004 from the Neotropics) to be conspecific with R. laulaha, and identifies R. unakensis from Texas as a putative sister taxon. Different possible historical scenarios are discussed regarding the migration and establishment of R laulaha ancestors between the Americas and Hawaii. Rhodocollybia lignitilis is synonymized with R. laulaha, and Marasmius clavipes is transferred to Rhodocollybia.

Original language	English (US)
Pages (from-to)	463-473
Number of pages	11
Journal	Mycotaxon
Volume	112
DOIs	https://doi.org/10.5248/112.463
State	Published - Apr 2010

Keywords

ITS
LSU
Species range

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics
Plant Science

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title = "Geographic origins and phylogenetic affinities of the putative Hawaiian endemic Rhodocollybia laulaha",

abstract = "The Hawaiian mushroom Rhodocollybia laulaha was selected as a model to investigate patterns of gene flow between geographically isolated fungal populations from ecologically and bioclimatically varied sites. Its morphology (distinctive when compared to other members of the genus) and affinity for endemic Hawaiian forest suggested that it was endemic to Hawaii. However, speculation as to its closest nonHawaiian relative and its overall placement within the genus was based on mostly anecdotal evidence. The present morphological and genetic research identifies a wellsupported clade comprising R. laulaha individuals from across the Hawaiian Islands, reveals R. lignitilis (described in 2004 from the Neotropics) to be conspecific with R. laulaha, and identifies R. unakensis from Texas as a putative sister taxon. Different possible historical scenarios are discussed regarding the migration and establishment of R laulaha ancestors between the Americas and Hawaii. Rhodocollybia lignitilis is synonymized with R. laulaha, and Marasmius clavipes is transferred to Rhodocollybia.",

keywords = "ITS, LSU, Species range",

author = "Keiirle, {M. R.} and Avis, {P. G.} and Desjardin, {D. E.} and Hemmes, {D. E.} and Mueller, {G. M.}",

year = "2010",

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doi = "10.5248/112.463",

language = "English (US)",

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AU - Keiirle, M. R.

AU - Avis, P. G.

AU - Desjardin, D. E.

AU - Hemmes, D. E.

AU - Mueller, G. M.

PY - 2010/4

Y1 - 2010/4

N2 - The Hawaiian mushroom Rhodocollybia laulaha was selected as a model to investigate patterns of gene flow between geographically isolated fungal populations from ecologically and bioclimatically varied sites. Its morphology (distinctive when compared to other members of the genus) and affinity for endemic Hawaiian forest suggested that it was endemic to Hawaii. However, speculation as to its closest nonHawaiian relative and its overall placement within the genus was based on mostly anecdotal evidence. The present morphological and genetic research identifies a wellsupported clade comprising R. laulaha individuals from across the Hawaiian Islands, reveals R. lignitilis (described in 2004 from the Neotropics) to be conspecific with R. laulaha, and identifies R. unakensis from Texas as a putative sister taxon. Different possible historical scenarios are discussed regarding the migration and establishment of R laulaha ancestors between the Americas and Hawaii. Rhodocollybia lignitilis is synonymized with R. laulaha, and Marasmius clavipes is transferred to Rhodocollybia.

AB - The Hawaiian mushroom Rhodocollybia laulaha was selected as a model to investigate patterns of gene flow between geographically isolated fungal populations from ecologically and bioclimatically varied sites. Its morphology (distinctive when compared to other members of the genus) and affinity for endemic Hawaiian forest suggested that it was endemic to Hawaii. However, speculation as to its closest nonHawaiian relative and its overall placement within the genus was based on mostly anecdotal evidence. The present morphological and genetic research identifies a wellsupported clade comprising R. laulaha individuals from across the Hawaiian Islands, reveals R. lignitilis (described in 2004 from the Neotropics) to be conspecific with R. laulaha, and identifies R. unakensis from Texas as a putative sister taxon. Different possible historical scenarios are discussed regarding the migration and establishment of R laulaha ancestors between the Americas and Hawaii. Rhodocollybia lignitilis is synonymized with R. laulaha, and Marasmius clavipes is transferred to Rhodocollybia.

KW - ITS

KW - LSU

KW - Species range

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Geographic origins and phylogenetic affinities of the putative Hawaiian endemic Rhodocollybia laulaha

Abstract

Keywords

ASJC Scopus subject areas

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