Competition and co-existence of Zoophthora radicans and Pandora blunckii , two co-occurring fungal pathogens of the diamondback moth, Plutella xylostella

A - Papers appearing in refereed journals

Guzman-Franco, A. W., Clark, S. J., Alderson, P. G. and Pell, J. K. 2009. Competition and co-existence of Zoophthora radicans and Pandora blunckii , two co-occurring fungal pathogens of the diamondback moth, Plutella xylostella. Mycological Research. 113 (11), pp. 1312-1321.

AuthorsGuzman-Franco, A. W., Clark, S. J., Alderson, P. G. and Pell, J. K.
Abstract

The entomopathogenic fungi Zoophthora radicans and Pandora blunckii co-occur in field populations of Plutella xylostella and, therefore, are likely to interact during the infection process. We have investigated the possible outcomes of these interactions in the laboratory. Using four isolates, two of each fungal species, inter-specific interaction experiments were done in Petri dishes and on intact plants. In Petri dish experiments, larvae were inoculated directly using sporulating mats of mycelium, both species had the same opportunity to infect and only the relative concentration of conidia of each pathogen species applied was manipulated. In the intact plant experiments, larvae were placed onto fungus-contaminated plants, inoculation was passive and the probability of infection by either or both species of fungi depended on larval activity and proximity to inoculum. In the Petri dish experiment, the species with the largest concentration of conidia out-competed the other regardless of virulence, and results were similar in the intact plant experiment. The ecological implications for competition or co-existence of these two pathogens in the field are discussed.

Year of Publication2009
JournalMycological Research
Journal citation113 (11), pp. 1312-1321
Digital Object Identifier (DOI)doi:10.1016/j.mycres.2009.08.016
Open accessPublished as non-open access
Funder project or codeSEF
MCG
Arable crops ecosystems - habitat diversification, crop management and natural enemies for crop protection and biodiversity
Bio Nano Consult (Rocre Tenant)
Role of inoculum sources in Rhynchosporium population dynamics and epidemics on barley
Output statusPublished
Publication dates
Online16 Sep 2009
Publication process dates
Accepted28 Aug 2009
Copyright licensePublisher copyright
ISSN0953-7562
PublisherThe British Mycological Society (BMS)

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