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- Title
Actin versus tubulin configuration in arbuscule-containing cells from mycorrhizal tobacco roots.
- Authors
Genre, A.; Bonfante, P.
- Abstract
The involvement of the cytoskeleton in symbiotic interactions such as arbuscular mycorrhizas has received little attention. In this paper, we examine the organization of actin in tobacco mycorrhizal roots and compare actin and tubulin patterns within arbuscle-containing cells. Our results show drastic reorganization of microfilaments and microtubules upon fungal infection and how those new cytoskeletal patterns relate to the host cytoplasm rearrangement and the intracellular fungal structures. Whereas in uninfected cells a network of cortical and perinuclear actin filaments was observed, in infected cells actin filaments closely follow the fungal branches and envelop the whole arbuscule in a dense coating network. Microtubules are less closely connected with the fungus surface. They run across the whole arbuscule mass, linking branches to each other and to the host cell cortex and nucleus. These major differences between the two cytoskeletal components are used to advance some suggestions concerning their contribution to structural functions in the plant-fungus interactions during the mycorrhizal symbiosis.
- Subjects
ACTIN; TUBULINS; TOBACCO; MYCORRHIZAS; MICROTUBULES; CYTOSKELETON; MYCOSES
- Publication
New Phytologist, 1998, Vol 140, Issue 4, p745
- ISSN
0028-646X
- Publication type
Article
- DOI
10.1046/j.1469-8137.1998.00314.x