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Colonization patterns in a mycorrhiza‐defective mutant tomato vary with different arbuscular‐mycorrhizal fungi
Author(s) -
Gao LL.,
Delp G.,
Smith S. E.
Publication year - 2001
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1046/j.0028-646x.2001.00193.x
Subject(s) - biology , colonization , mycorrhiza , glomus , lycopersicon , symbiosis , botany , arbuscular mycorrhiza , inoculation , phycomycetes , mutant , fungus , horticulture , bacteria , microbiology and biotechnology , genetics , gene , biochemistry
Summary• Interactions between a mycorrhiza‐defective tomato ( Lycopersicon esculentum ) mutant, rmc , and different species of arbuscular mycorrhizal (AM) fungi were investigated and compared with those with the wild‐type cv. 76R. • Both cv. 76R and rmc were challenged with Glomus intraradices , G. mosseae , G. coronatum, G. versiforme , G. etunicatum , G. fasciculatum , Gigaspora margarita and Scutellospora calospora using a nurse pot inoculation system. • Cv. 76R demonstrated normal colonization patterns for all fungal species. By contrast, the development of different fungal species with rmc was impaired at different steps. Development of G. intraradices , G. etunicatum and G. fasciculatum was arrested on the root surface. However, G. mosseae , G. coronatum , G. margarita and S. calospora frequently penetrated the root epidermis, but colonization of the cortex was rare. G. versiforme achieved relatively normal colonization in rmc compared with the other species. • This is the first report on the variation of colonization patterns in a mycorrhiza‐defective mutant by different species of AM fungi, and highlights the need for previously described mutants in legumes to be challenged by more than one fungus.