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A fungal pathogen in time and space: the population dynamics of Beauveria bassiana in a conifer forest

journal contribution
posted on 2023-07-26, 13:25 authored by Emma L. Ormond, Alison P. M. Thomas, Philip J. A. Pugh, Judith K. Pell, Helen E. Roy
The fungal entomopathogen Beauveria bassiana is ubiquitous in below-ground systems; however, there is a dearth of information on the above-ground diversity, temporal and spatial distribution of this fungus. Therefore, we assessed its occurrence in a conifer forest (Pseudotsuga monziesii and Pinus nigra var. maritima) using selective media to isolate B. bassiana from soil, branch and bark samples collected in October 2005, March and June 2006. Fungal density was the highest at all locations in October, declining in March and June, and absent from conifer branches in June. This above-ground decline most likely resulted from more extreme environmental conditions compared with those below ground. Molecular analyses (ISSR-PCR) indicated that B. bassiana is genetically diverse, comprising both distinct microhabitat-specific and seasonal isolates. The occurrence of dissimilar above- and below-ground isolates suggests that B. bassiana occupies various overlapping niches in these systems.

History

Refereed

  • Yes

Volume

74

Issue number

1

Page range

146-154

Publication title

FEMS Microbiology Ecology

ISSN

1574-6941

Publisher

Oxford University Press

Language

  • other

Legacy posted date

2013-09-12

Legacy Faculty/School/Department

ARCHIVED Faculty of Science & Technology (until September 2018)

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