Penicillium mycobiota in arctic subglacial ice.

Abstract:

:Fungi have been only rarely isolated from glacial ice in extremely cold polar regions and were in these cases considered as random, long-term preserved Aeolian deposits. Fungal presence has so far not been investigated in polar subglacial ice, a recently discovered extreme habitat reported to be inhabited exclusively by heterotrophic bacteria. In this study we report on the very high occurrence (up to 9000 CFU L(-1)) and diversity of filamentous Penicillium spp. in the sediment-rich subglacial ice of three different polythermal Arctic glaciers (Svalbard, Norway). The dominant species was P. crustosum, representing on the average half of all isolated strains from all three glaciers. The other most frequently isolated species were P. bialowiezense, P. chrysogenum, P. thomii, P. solitum, P. palitans, P. echinulatum, P. polonicum, P. commune, P. discolor, P. expansum, and new Penicillium species (sp. 1). Twelve more Penicillium species were occasionally isolated. The fungi isolated produced consistent profiles of secondary metabolites, not different from the same Penicillium species from other habitats. This is the first report on the presence of large populations of Penicillium spp. in subglacial sediment-rich ice.

journal_name

Microb Ecol

journal_title

Microbial ecology

authors

Sonjak S,Frisvad JC,Gunde-Cimerman N

doi

10.1007/s00248-006-9086-0

subject

Has Abstract

pub_date

2006-08-01 00:00:00

pages

207-16

issue

2

eissn

0095-3628

issn

1432-184X

journal_volume

52

pub_type

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