CCT PATAGONIA NORTE   21812
CENTRO CIENTIFICO TECNOLOGICO CONICET - PATAGONIA NORTE
Centro Científico Tecnológico - CCT
artículos
Título:
Production of theUVB-absorbing compound mycosporine^glutaminol^glucoside by Xanthophyllomyces dendrorhous (Phaffia rhodozyma)
Autor/es:
DIEGO LIBKIND, MART´ÝN MOLINE & MAR´ÝA VAN BROOCK (MARIA ROSA GIRAUDO)
Revista:
FEMS YEAST RESEARCH
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: London; Año: 2010 vol. II p. 1 - 8
ISSN:
1567-1356
Resumen:
The ability of the basidiomycetous yeast Xanthophyllomyces dendrorhous (Phaffia
rhodozyma) to accumulate astaxanthin is responsible for the industrial use of this
yeast as a microbial source of pigments for aquaculture. It is also hypothesized that
astaxanthin accounts for its ability to thrive in highly oxidative and UV-exposed
habitats. Here, we assessed the ability of this species to synthesize UV-absorbing
compounds generally known as mycosporines, evaluated the effect of culture
media in the production of these compounds and compared its UV growth
resistance and tolerance with other yeasts. The 48 wild and collection strains
screened were positive for mycosporines and a unique compound identified
as mycosporineglutaminolglucoside (MGG) was detected. Thus, the ability ofXanthophyllomyces dendrorhous (Phaffia
rhodozyma) to accumulate astaxanthin is responsible for the industrial use of this
yeast as a microbial source of pigments for aquaculture. It is also hypothesized that
astaxanthin accounts for its ability to thrive in highly oxidative and UV-exposed
habitats. Here, we assessed the ability of this species to synthesize UV-absorbing
compounds generally known as mycosporines, evaluated the effect of culture
media in the production of these compounds and compared its UV growth
resistance and tolerance with other yeasts. The 48 wild and collection strains
screened were positive for mycosporines and a unique compound identified
as mycosporineglutaminolglucoside (MGG) was detected. Thus, the ability of) to accumulate astaxanthin is responsible for the industrial use of this
yeast as a microbial source of pigments for aquaculture. It is also hypothesized that
astaxanthin accounts for its ability to thrive in highly oxidative and UV-exposed
habitats. Here, we assessed the ability of this species to synthesize UV-absorbing
compounds generally known as mycosporines, evaluated the effect of culture
media in the production of these compounds and compared its UV growth
resistance and tolerance with other yeasts. The 48 wild and collection strains
screened were positive for mycosporines and a unique compound identified
as mycosporineglutaminolglucoside (MGG) was detected. Thus, the ability of
X. dendrorhous to produce MGG, as described here for the first time, is so far
unique among the Cystofilobasidiales. The compound was synthesized constitutively,
although growth under visible light and, to a greater extent, UVA radiation
stimulated its production. Strains from UV-exposed habitats produced larger
quantities and oligotrophic complex media seemed to favor MGG accumulation.
UV tolerance and survival of X. dendrorhous was high and comparable to that of
the polyextremophilic Rhodotorula mucilaginosa. The taxonomical and ecological
implications of the production of MGG by X. dendrorhous are discussedto produce MGG, as described here for the first time, is so far
unique among the Cystofilobasidiales. The compound was synthesized constitutively,
although growth under visible light and, to a greater extent, UVA radiation
stimulated its production. Strains from UV-exposed habitats produced larger
quantities and oligotrophic complex media seemed to favor MGG accumulation.
UV tolerance and survival of X. dendrorhous was high and comparable to that of
the polyextremophilic Rhodotorula mucilaginosa. The taxonomical and ecological
implications of the production of MGG by X. dendrorhous are discussedCystofilobasidiales. The compound was synthesized constitutively,
although growth under visible light and, to a greater extent, UVA radiation
stimulated its production. Strains from UV-exposed habitats produced larger
quantities and oligotrophic complex media seemed to favor MGG accumulation.
UV tolerance and survival of X. dendrorhous was high and comparable to that of
the polyextremophilic Rhodotorula mucilaginosa. The taxonomical and ecological
implications of the production of MGG by X. dendrorhous are discussedX. dendrorhous was high and comparable to that of
the polyextremophilic Rhodotorula mucilaginosa. The taxonomical and ecological
implications of the production of MGG by X. dendrorhous are discussedRhodotorula mucilaginosa. The taxonomical and ecological
implications of the production of MGG by X. dendrorhous are discussedX. dendrorhous are discussed