INVESTIGADORES
LIBKIND FRATI Diego
artículos
Título:
Phylogenetic distribution of fungal mycosporines within Pucciniomycotina (Basidiomycota)
Autor/es:
LIBKIND, D; MOLINÉ, M; SOMMARUGA, R; SAMPAIO, JP; VAN BROOCK, MR
Revista:
YEAST
Editorial:
JOHN WILEY & SONS LTD
Referencias:
Lugar: LOndres; Año: 2011 vol. 28 p. 619 - 627
ISSN:
0749-503X
Resumen:
The synthesis of the UV Absorbing compounds named mycosporines (MYCs) has
been detected in a few basidiomycetous yeast groups. Conspicuous accumulation
of mycosporine-glutaminol-glucoside (MGG) in yeasts requires photo-induction and
its photoprotective function has been postulated. The distribution of the ability to
produce MYCs appeared to be related to the yeast taxonomic affiliation. In view of
the potential significance of MYCs in yeast taxonomy, we here studied the distribution
of this trait among dimorphic basidiomycetes of the Pucciniomycotina. Of the 94
fungal species (377 strains and 33 genera) tested, almost half were MYC-positive
and MGG was the main compound produced. MGG synthesis was observed for
representatives of five of seven Pucciniomycotina classes, indicating that this trait is
widely distributed in this group. MGG detection proved useful for the differentiation
of species of the polyphyletic genera, such as Rhodotorula and Sporobolomyces, that
are phylogenetically separated. MGG quantification and UV tolerance studies in
Cystobasidiomycetes supported the idea that the habitat of origin of each strains
is important in the level of MGG synthesis and that MYCs have a photoprotective
function in yeasts. The taxonomic value of this trait in fungal systematics is discussed.