INVESTIGADORES
MARTORELL Maria Martha
artículos
Título:
Biodiversity and enzymes bioprospection of Antarctic filamentous fungi
Autor/es:
MARTORELL, MARIA M.; RUBERTO, LUCAS; FERNANDEZ, PABLO M.; FIGUEROA, LUCIA I. C.; MAC CORMACK, WALTER
Revista:
POLAR BIOLOGY
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2017
ISSN:
0722-4060
Resumen:
Antarcticais one of the most suitable places for the bioprospecting ofpsychrotrophic fungi. The aim of this study was to investigate thediversity of filamentous fungi from 25 DeMayo Island, Antarctica and their ability to produce extracellularhydrolytic enzymes at low temperature. A total of 51 fungi isolateswere obtained from 31 different samples. We identified twelvedifferent genera, seven taxa belonged to the Ascomycotaphylum (Cadophora,Helotiales, Monographella, Oidodendron, Penicillium, Phialocephala,Phialophora, Phoma andPseudogymnoascus),one taxa to the Basidiomycotaphylum (Irpex)and two taxa to the Mucoromycotaphylum (MortierellaandMucor).Some taxa not previously reported in Antarctica, as Monographellalycopodina,Mucorzonatus andPenicillium kojigenum, wereidentify.Nineisolates could not be identified to genus level, and could berepresenting novel species. Most of the fungi were psychrotrophic(76.5%) rather than psychrophilc. Nevertheless, only five isolateswere able to grow at 35ºC, and the optimal temperature forgrowth was 15ºC for 65% of the fungal isolates. Results fromenzymes production (amylase, cellulase, xylanase, lipase, esterase,laccase, protease) at low temperatures revealed that the Antarcticenvironment contains metabolically diverse cultivable fungi, whichrepresent potential tools for biotechnological applications in coldregions.