Genetic diversity, recombination, and divergence in animal associated Penicillium dipodomyis

Daniel A. Henk, Matthew C. Fisher

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Penicillium dipodomyis is thought to be an exclusively asexual fungus associated with Kangaroo Rats, Dipodomys species, and is unique among Penicillium species in growing at 37°C but producing no known toxins. Lack of recombination within P. dipodomyis would result in limited adaptive flexibility but possibly enhance local adaptation and host selection via maintenance of favourable genotypes. Here, analysis of DNA sequence data from five protein-coding genes shows that recombination occurs within P. dipodomyis on a small spatial scale. Furthermore, detection of mating-type alleles supports outcrossing and a sexual cycle in P. dipodomyis. P. dipodomyis was a weaker competitor in in vitro assays with other Penicillium species found in association with Kanagaroo rats. Bayesian species level analysis suggests that the P. dipodomyis lineage diverged from closely related species also found in cheek pouches of Kangaroo Rats and their stored seeds about 11 million years ago, a similar divergence time as Dipodomys from its sister rodent taxa.
LanguageEnglish
Article numbere22883
Number of pages6
JournalPLoS ONE
Volume6
Issue number8
DOIs
StatusPublished - 5 Aug 2011

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Dipodomys
Penicillium
Genetic Recombination
Rats
Animals
genetic variation
animals
DNA sequences
Fungi
Seed
Cheek
Assays
pouches
outcrossing
Genes
DNA Sequence Analysis
Association reactions
Rodentia
Seeds
rodents

Cite this

Genetic diversity, recombination, and divergence in animal associated Penicillium dipodomyis. / Henk, Daniel A.; Fisher, Matthew C.

In: PLoS ONE, Vol. 6, No. 8, e22883, 05.08.2011.

Research output: Contribution to journalArticle

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