Occurrence of Phytophthora species in oak stands in Italy and their association with declining oak trees

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Soil-borne species of were isolated from 19 of 30 examined oak forest areas in Italy. The frequency of isolated spp. (35.2%) was significantly correlated with soil pH and longitude of the sites. Eleven species were detected. , and were recovered from sites in central and southern Italy whereas was isolated in the northern and central part of the country. occurred all over Italy. was the only species significantly associated with declining oak trees.

Les Phytophthora dans les chênaies d'Italie et leur association avec les chênes dépérissants

Des Phytophthora ont été isolés du sol dans 19 sites parmi 30 sites analysés dans des chênaies italiennes. La fréquence d'isolement de Phytophthora spp. (35,2%) était corrélée significativement avec le pH du sol et la longitude des sites. Onze espèces de Phytophthora ont été trouvées. Phytophthora cambivora, P. cinnamomi et P. cactorum ont été trouvés dans le centre et le sud de l'Italie et le P. quercina dans le nord et le centre. Phytophthora citricolaétait présent dans l'ensemble de l'Italie. Phytophthora quercinaétait la seule espèce associée significativement avec des chênes dépérissants.

Document Type: Research Article

DOI: http://dx.doi.org/10.1046/j.1439-0329.2002.00264.x

Affiliations: 1: Department of Plant Protection, University of Studies of Tuscia, Via S. Camillo de Lellis, 01100 Viterbo, Italy, 2: Agriculture Biotechnology, Section of Plant Pathology, University of Florence, Piazzale delle Cascine, 28, 50144 Florence, Italy, 3: Department of Biology and Plant Pathology, University of Bari, Via G. Amendola, 165/A, 70126 Bari, Italy, 4: CNR Institute of Forest Tree Pathology, Piazzale Delle Cascine, 28, 50144 Florence, Italy

Publication date: February 1, 2002

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