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Calonectria spp. causing leaf spot, crown and root rot of ornamental plants in Tunisia

Lombard, L. and Polizzi, G. and Guarnaccia, V. and Vitale, A. and Crous, P.W. (2011) Calonectria spp. causing leaf spot, crown and root rot of ornamental plants in Tunisia. Persoonia, 27, 73-79. ISSN 0031-5850.

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Official URL: http://dx.doi.org/10.3767/003158511X615086

Abstract

Calonectria spp. are important pathogens of ornamental plants in nurseries, especially in the Northern Hemisphere. They are commonly associated with a wide range of disease symptoms of roots, leaves and shoots. During a recent survey in Tunisia, a number of Calonectria spp. were isolated from tissues of ornamental plants showing symptoms of leaf spot, crown and root rot. The aim of this study was to identify these Calonectria spp. using morphological and DNA sequence comparisons. Two previously undescribed Calonectria spp., C. pseudomexicana sp. nov. and C. tunisiana sp. nov., were recognised. Calonectria mexicana and C. polizzii are newly reported for the African continent. Pathogenicity tests with all four Calonectria spp. showed that they are able to cause disease on seedlings of Callistemon spp., Dodonaea viscosa, Metrosideros spp. and Myrtus communis.

Item Type:Article
Institutes:Centraalbureau voor Schimmelcultures (CBS)
ID Code:12776
Deposited On:13 Jan 2012 01:00
Last Modified:23 Nov 2012 12:30

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