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Home → Publications → American Chestnut Proceedings → 1978 → Research Carried Out in France Into Diseases of the Chestnut Tree

Research Carried Out in France Into Diseases of the Chestnut Tree

The root rot of European chestnut caused by Phytophthora cinnamomi is described.The nature of the infection process, possible resistance mechanisms, and control by use of mycorrhizae are topics that have been investigated. The cultural features of normal and hypovirulent isolates of Endothia parasitica are contrasted. Vegetative segregation of hypovirulent B forms into N, B and JR types and a description of the infective properties of B and JR are covered. The role of diaporthine, a toxin produced primarily by virulent strains of E. parasitica, is discussed in relation to the host-parasite interaction. The paper concludes by exploring the development of other biological control systems based on hypovirulence.


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Author(s): J. Grente, S. Berthelay-Sauret

Publication: American Chestnut Proceedings - 1978