@ARTICLE{TreeBASE2Ref22644,
author = {Márcia David-Palma and Diego Libkind and José Paulo Sampaio},
title = {Global distribution, diversity hotspots and niche transitions of an astaxanthin-producing eukaryotic microbe },
year = {2013},
keywords = {Phaffia, Yeast, Phylogeography, Astaxanthin, Nothofagus, Cyttaria.},
doi = {10.1111/mec.12642},
url = {http://onlinelibrary.wiley.com/doi/10.1111/mec.12642/pdf},
pmid = { 24372735},
journal = {Molecular Ecology},
volume = {},
number = {},
pages = {},
abstract = {Microbes establish very diverse but still poorly understood associations with other microscopic
or macroscopic organisms that do not follow the more conventional modes of competition or
mutualism. Phaffia rhodozyma, an orange-coloured yeast that produces the biotechnologically
relevant carotenoid astaxanthin, exhibits an Holarctic association with birch trees in temperate
forests that contrasts with the more recent finding of a South American population associated
with Nothofagus (southern beech) and with stromata of its biotrophic fungal parasite Cyttaria
spp. We investigated if the association of Phaffia with Nothofagus-Cyttaria could be expanded
to Australasia, the other region of the world where Nothofagus are endemic, studied the genetic
structure of populations representing the known worldwide distribution of Phaffia and analyzed
the evolution of the association with tree hosts. The phylogenetic analysis revealed that Phaffia
diversity in Australasia is much higher than in other regions of the globe and that two endemic
and markedly divergent lineages seem to represent new species. The observed genetic
diversity correlates with host tree genera rather than with geography, which suggests that
adaptation to the different niches is driving population structure in this yeast. The high genetic
diversity and endemism in Australasia indicates that the genus evolved in this region and that
the association with Nothofagus is the ancestral tree-association. Estimates of the divergence
times of Phaffia lineages point to splits that are much more recent than the breakup of
Gondwana, supporting that long distance dispersal rather than vicariance is responsible for
observed distribution of P. rhodozyma.}
}
Taxa for Study 15043
Citation title:
"Global distribution, diversity hotspots and niche transitions of an astaxanthin-producing eukaryotic microbe ".
Study name:
"Global distribution, diversity hotspots and niche transitions of an astaxanthin-producing eukaryotic microbe ".
This study is part of submission 15043
(Status: Published).
Taxa