An Arbuscular Mycorrhizal Fungus (Glomus mosseae) Induces a Defence-like Response in Rubber Tree (Hevea brasiliensis) Roots

Isabelle Laffont-Schwob (1) , Huguette Sallanon (2, 3) , Mireille M. Ducher (2) , Alain Coudret (2)

1 EA2202 BIODIVERSITE
2 Laboratoire de physiologie et biotechnologies végétales Université Blaise Pascal
3 UBP - Université Blaise Pascal - Clermont-Ferrand 2

The specific activities of cinnamyl alcohol dehydrogenase (EC 1.1.1.-) and cell wall-bound peroxidases (EC 1.11.1.-) were enhanced in roots of Hevea brasiliensis 2 weeks after inoculation with Glomus mosseae, simultaneously with an increased lignin content. However, no scopoletin accumulation was observed by this time. These defence-like reactions were caused by the first penetration of the AM fungus but they were transient.

Keywords: Glomus mosseae; Hevea brasiliensis (rubber tree); Lignification; Mycorrhization; Scopoletin

Domains: Life Sciences [q-bio]; Environmental Sciences; Biodiversity and Ecology

Isabelle Laffont-Schwob, Huguette Sallanon, Mireille M. Ducher, Alain Coudret. An Arbuscular Mycorrhizal Fungus (Glomus mosseae) Induces a Defence-like Response in Rubber Tree (Hevea brasiliensis) Roots. Journal of Plant Physiology, 2000, 156, pp.284 - 287. ⟨hal-02095618⟩