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Article Dans Une Revue Mycological Research Année : 1998

Structure of Collybia fusipes populations in two infected oak stands

Résumé

Collybia fusipes is the cause of a root rot of oak trees (Quercus petraea, Q. robur, Q. rubra). We studied the structure of C. fusipes populations in two infected oak stands by using somatic incompatibility and DNA amplification. Isolates were obtained from different oak root systems or from within the same root system and somatic incompatibility groups (SIG) were identified. Many small SIGs that seldom encompassed more than one root system were present in both stands. More than one SIG was usually present on an individual root system: there were 3.1 ± 1.3 SIGs on the pedunculate oaks and 2.2 ± 0.6 on the red oaks. The largest SIG contained more than 70 % of the isolates obtained from the root system of fourteen of the twenty studied trees. Isolates that belonged to the same SIG usually had the same ribosomal intergenic spacer. It is concluded that C. fusipes spreads poorly from tree to tree by vegetative means.
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hal-02058967 , version 1 (06-03-2019)

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Benoit Marçais, F. Martin, C. Delatour. Structure of Collybia fusipes populations in two infected oak stands. Mycological Research, 1998, 102 (3), pp.361-367. ⟨10.1017/S0953756297005017⟩. ⟨hal-02058967⟩
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