European Journal of Plant Pathology (2003) 109, 791-805

Séverine Cohen, Valérie Allasia, Paul Venard, Sylvia Notter, Christian Vernière and Franck Panabières (2003)
Intraspecific variation in Phytophthora citrophthora from citrus trees in eastern Corsica
European Journal of Plant Pathology 109 (8), 791-805
Abstract: Isolates of Phytophthora pathogenic to citrus crops on Eastern Corsica and associated with gummosis were identified by PCR-RFLP of internal transcribed spacers (ITS) sequences and characterized by the random amplified microsatellites (RAMS) technique. A sample of 114 isolates collected from diseased trunks and fruits, and from soil, were overwhelmingly Phytophthora citrophthora. Further analysis indicated that the P. citrophthora population was not homogeneous in citrus groves. There were two groups, with a few (4%) atypical isolates in two marginal groups. The major groups have been re-examined in the light of mating behaviour, RFLPs of mitochondrial DNA and sequence comparisons of ITS regions of rDNA. They were found distinct with all these criteria and perhaps constitute distinct taxa. The results indicate that important modifications occurred in the population structure of P. citrophthora over time in Corsican groves. These changes may have impact on the recent outbreaks of gummosis.
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Link to article at publishers website
Database assignments for author(s): Franck Panabieres, Christian Verniere

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Phytophthora citrophthora	Citrus (genus)	France