Interspecific and intraspecific diversity in oak powdery mildews in Europe : coevolution history and adaptation to their hosts
Language
en
Article de revue
This item was published in
Mycoscience. 2011, vol. 52, n° 3, p. 165-173
Springer Verlag
English Abstract
Quercus has been reported as the genus with the largest number of attacking powdery mildews. In Europe, oak powdery mildew was rarely reported before 1907, when severe outbreaks were observed. These epidemics were attributed ...Read more >
Quercus has been reported as the genus with the largest number of attacking powdery mildews. In Europe, oak powdery mildew was rarely reported before 1907, when severe outbreaks were observed. These epidemics were attributed to the newly described species Erysiphe alphitoides, presumed to be of exotic origin. After the burst of interest following the emergence of the disease, research on this topic remained very limited. Interest in research was recently reactivated in response to the availability of molecular tools. This review summarizes current knowledge on the diversity of oak powdery mildews in Europe and their possible evolutionary relationships with European oaks. The most striking results are the evidence of cryptic diversity (detection in France of a lineage closely related to Erysiphe quercicola, previously thought to only have an Asian distribution), large host range (similarity of E. alphitoides and E. quercicola with powdery mildews of tropical plants) but also local adaptation to Quercus robur. These recent findings highlight the complexity of the history of oak powdery mildew in Europe and point to the question of host specialization and host jumps in the evolution of powdery mildew fungi.Read less <
Keywords
ERYSIPHE QUERCICOLA
LOCAL ADAPTATION
RELATION HOTE-PARASITE
English Keywords
ERYSIPHE ALPHITOIDES
PHYLLACTINIA ROBORIS
HOST RANGE
CHENE
Origin
Hal imported