Record ID No. |
1347 |
Author(s) |
Kubota M., McGonigle T. P., Hyakumachi M. , 2005 |
Affiliation |
Faculty of Agriculture, Gifu University, 1-1 Yanagido, 501-1193 Gifu, Japan. |
Title |
Co-occurrence of Arum- and Paris-type morphologies of arbuscular mycorrhizae in cucumber and tomato |
Source. Vol.(no):Page |
Mycorrhiza. 15(2): 73-77p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Genetics |
Host |
Cucumis sativus, Lycopersicon esculentum, Clethra barbinervis (Ericales) |
Organism |
Paraglomus, Acaulospora, Glomus, Gigaspora |
Country |
Japan, Asia |
Abstracts |
Colonization by arbuscular mycorrhizal (AM) fungi was investigated in cucumber (Cucumis sativus), tomato (Lycopersicon esculentum) and Clethra barbinervis (Ericales) grown in field-collected soil known from previous studies to generate Paris-type arbuscular mycorrhizas in C. barbinervis. Spores of Paraglomus, Acaulospora, Glomus, and Gigaspora were found in the soil. Formation of hyphal coils and arbusculate coils of Paris-type mycorrhizas and of arbuscules of Arum-type mycorrhizas in roots raised in this soil in the growth chamber were compared with the detection of DNA of AM fungi from the same root systems using Glomales-specific primers. Only Paris-type mycorrhizas with extensive arbusculate coils developed in C. barbinervis, but cucumber and tomato developed both Paris- and Arum-types in the same root systems. Glomaceae and Archaeosporaceae and/or Paraglomaceae were detected strongly in the DNA from both cucumber and tomato roots, in which Arum-type mycorrhizas were observed. In contrast, DNA of Glomaceae was detected more sparingly in C. barbinervis, in which Paris-type mycorrhizas dominated. Acaulosporaceae and Gigasporaceae were strongly detected in the DNA from both C. barbinervis and tomato, whereas they were more weakly detected in cucumber. These results indicate that the morphology of colonization is strongly influenced by the selection of fungi to colonize the host plant from among those in the soil environment. |