Agritrop
Home

Variability in pathogenicity among Phytophthora spp. Isolated from Citrus in Corsica

Vernière Christian, Cohen Séverine, Raffanel B., Dubois Albert, Venard Paul, Panabières Franck. 2004. Variability in pathogenicity among Phytophthora spp. Isolated from Citrus in Corsica. Journal of Phytopathology, 152 (8-9) : pp. 476-483.

Journal article ; Article de revue à facteur d'impact
[img] Published version - Anglais
Access restricted to CIRAD agents
Use under authorization by the author or CIRAD.
document_522659.pdf

Télécharger (123kB)

Abstract : Gummosis, caused by several Phytophthora species, is one of the most serious constraints to citrus production in Corsica. The current Phytophthora population on citrus trees is mainly composed of P. citrophthora divided into two major groups, namely GI and G2, with two additional minor groups. Following changes in cultural practices, favourable climatic conditions, and introduction of new hosts, repeated gummosis outbreaks have been observed. The pathogenicity of several Phytophthora isolates of each group collected in citrus groves was assessed for gummosis disease on 20 citrus scion and rootstock cultivars. All isolates tested proved virulent on citrus but extensive pathogenicity differences were observed among and within Phytophthora groups. The data indicate that G1 isolates of P. citrophthora are pathogenic to resistant rootstocks such as Poncirus trifoliate or Carrizo citrange, and moderately aggressive towards scions. In contrast, isolates of the group G2 tend to display a greater aggressiveness to a number of scion cultivars, but are not virulent to P. trifoliata and its hybrids. Implications of these data on disease management are discussed. (Résumé d'auteur)

Mots-clés Agrovoc : Citrus, Phytophthora, Pouvoir pathogène, Gommose, Porte greffe, Résistance aux maladies, Contrôle de maladies

Mots-clés géographiques Agrovoc : Corse

Classification Agris : H20 - Plant diseases

Auteurs et affiliations

  • Vernière Christian, CIRAD-FLHOR-ARF (FRA) ORCID: 0000-0002-2312-2073
  • Cohen Séverine, INRA (FRA)
  • Raffanel B., INRA (FRA)
  • Dubois Albert, INRA (FRA)
  • Venard Paul, INRA (FRA)
  • Panabières Franck, INRA (FRA)

Autres liens de la publication

Source : Cirad - Agritrop (https://agritrop.cirad.fr/522659/)

View Item (staff only) View Item (staff only)

[ Page générée et mise en cache le 2021-01-21 ]