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Is a Fully Established Arbuscular Mycorrhizal Symbiosis Required for Bioprotection of Pisum sativum Roots against Aphanomyces euteiches?

February 2000 , Volume 13 , Number  2
Pages  238 - 241

Sophie Slezack , Eliane Dumas-Gaudot , Michel Paynot , and Silvio Gianinazzi

Laboratoire de Phytoparasitologie INRA/CNRS, CMSE, Institut National de la Recherche Agronomique, BV 1540, 21034 Dijon cédex, France

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Accepted 20 October 1999.

Bioprotection of pea roots against Aphanomyces euteiches by the arbuscular mycorrhizal fungus G. mosseae was demonstrated to depend on a fully established symbiosis. This was related with induction of mycorrrhiza-related chitinolytic enzymes. Possible mechanisms implicated in bioprotection are discussed.

Additional keywords: chitinase, chitosanase, Glomus mosseae, pea mutants.

© 2000 The American Phytopathological Society