NDLI: Genetic Variation Among Penicillium crustosum Isolates from Arctic and other Ecological Niches

Content Provider	Springer Nature Link
Author	Sonjak, Silva Frisvad, Jens C. Gunde Cimerman, Nina
Copyright Year	2007
Abstract	Penicillium crustosum is an important and panglobal contaminant of lipid- and protein-rich foods and feeds. Although it is infrequent in extremely cold environments, we isolated a high number of P. crustosum strains from Arctic coastal, but particularly, subglacial environments in Svalbard, Norway. P. crustosum is extremely consistent in its phenotypic properties, including morphology, physiology, and secondary metabolite production. However, some Arctic isolates differed from other Arctic and non-Arctic strains in their weak growth on creatine and in the production of the secondary metabolite andrastin A. In this study, we characterized genetic variability of P. crustosum strains originating from different Arctic and non-Arctic environments using amplified fragment length polymorphism (AFLP) and, in addition, M13 minisatellite fingerprinting and partial β-tubulin gene sequencing. Most of the Arctic strains (85%) showed a relatively low variability and polymorphism level. They produced nine different AFLP genotypes grouped into two clusters in accordance with glacier origin and creatine utilization. The rest of the Arctic isolates and isolates from various non-Arctic environments displayed a much greater degree of genetic variability. It seems that in stressful glacial environment low microbial genetic variation is represented by only a few adapted genotypes that were not recovered from nonpolar environments.
Starting Page	298
Ending Page	305
Page Count	8
File Format	PDF
ISSN	00953628
Journal	Microbial Ecology
Volume Number	54
Issue Number	2
e-ISSN	1432184X
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-03-08
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Nature Conservation Geoecology/Natural Processes Ecology Microbiology
Content Type	Text
Resource Type	Article
Subject	Soil Science Ecology Ecology, Evolution, Behavior and Systematics

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