Niche partitioning of the genetic lineages of the oak powdery mildew complex
Idioma
en
Article de revue
Este ítem está publicado en
Fungal Ecology. 2012-04, vol. 5, n° 2, p. 154-162
Elsevier
Resumen en inglés
Keywords: Biotrophic plan pathogen Ecological niche Oak Powdery mildews Species coexistence Temporal succession a b s t r a c t Recent molecular studies have shown that four genetic lineages, probably cryptic species, cause ...Leer más >
Keywords: Biotrophic plan pathogen Ecological niche Oak Powdery mildews Species coexistence Temporal succession a b s t r a c t Recent molecular studies have shown that four genetic lineages, probably cryptic species, cause oak powdery mildew in Europe. We tested the hypothesis of niche differentiation between the two most frequent species (Erysiphe alphitoides and Erysiphe quercicola), by determining their relative prevalences at various times during the growing season. E. quercicola was strictly associated with the flag-shoot symptom in a 2-yr sampling campaign of 35 natural oak seedling populations. Additional sampling during Aug.eSep. in the same stands showed that E. alphitoides predominated in most (70 %) cases. Time-course monitoring of powdery mildew in two natural regenerating oak populations confirmed the inverse patterns of relative abundance for these two species in early and late season. The coexistence of these two closely related species may be due to the use of different strategies , resulting from a trade-off between overwintering (flag-shoots vs. chasmothecia) and late-season performance. ª< Leer menos
Palabras clave
Erysiphe quercicola
mildiou poudreux
coexistence des espèces
Palabras clave en inglés
biotrophic plan pathogen
ecological niche
oak
powdery mildews
species coexistence
temporal succession
Erysiphe alphitoides
CHENE
différenciation spatio-temporelle
Orígen
Importado de HalCentros de investigación