A hyperparasite affects the population dynamics of a wild plant pathogen
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Tartalom: http://real.mtak.hu/18832/
Archívum: MTA Könyvtár
Gyűjtemény: Status = Published


Type = Article
Cím:
A hyperparasite affects the population dynamics of a wild plant pathogen
Létrehozó:
Tollenaere, C.
Pernechele, B.
Mäkinen, H. S.
Parratt, S.R.
Németh Z., Márk
Kovács, M. Gábor
Kiss, Levente
Dátum:
2014
Téma:
QH540 Ecology / ökológia
QR Microbiology / mikrobiológia
S1 Agriculture (General) / mezőgazdaság általában
Tartalmi leírás:
Assessing the impact of natural enemies of plant and animal pathogens on their host?s
population dynamics is needed to determine the role of hyperparasites in affecting
disease dynamics, and their potential for use in efficient control strategies of patho-
gens. Here, we focus on the long-term study describing metapopulation dynamics of
an obligate pathogen, the powdery mildew (
Podosphaera plantaginis
) naturally infect-
ing its wild host plant (
Plantago lanceolata
) in the fragmented landscape of the
?
Aland
archipelago (southwest Finland). Regionally, the pathogen persists through a balance
of extinctions and colonizations, yet factors affecting extinction rates remain poorly
understood. Mycoparasites of the genus
Ampelomyces
appear as good candidates for
testing the role of a hyperparasite, i.e. a parasite of other parasites, in the regulation of
their fungal hosts? population dynamics. For this purpose, we first designed a quantita-
tive PCR assay for detection of
Ampelomyces
spp. in field-collected samples. This
newly developed molecular test was then applied to a large-scale sampling within the
?
Aland archipelago, revealing that
Ampelomyces
is a widespread hyperparasite in this
system, with high variability in prevalence among populations. We found that the
hyperparasite was more common on leaves where multiple powdery mildew strains
coexist, a pattern that may be attributed to differential exposure. Moreover, the preva-
lence of
Ampelomyces
at the plant level negatively affected the overwinter survival of
its fungal host. We conclude that this hyperparasite may likely impact on its host pop-
ulation dynamics and argue for increased focus on the role of hyperparasites in disease
dynamics.
Típus:
Article
PeerReviewed
Formátum:
text
Azonosító:
Tollenaere, C. and Pernechele, B. and Mäkinen, H. S. and Parratt, S.R. and Németh Z., Márk and Kovács, M. Gábor and Kiss, Levente (2014) A hyperparasite affects the population dynamics of a wild plant pathogen. MOLECULAR ECOLOGY, 23. pp. 5877-5887. ISSN 0962-1083
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