Record ID No. |
1661 |
Author(s) |
Alonso, L M., Kleiner, D., Ortega, E , 2008 |
Affiliation |
University of Havana, Faculty of Biology, Departmentof Plant Biology, Plant Physiology Lab, Havana, CUBA |
Title |
Spores of the mycorrhizal fungus Glomus mosseae host yeasts that solubilize phosphate and accumulate polyphosphates |
Source. Vol.(no):Page |
Mycorrhiza.18(4):197-204p |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biochemistry |
Sub-subjects |
Miscellaneous |
Organism |
n.a. |
Country |
CUBA, North America |
Abstracts |
The present paper reports the presence of bacteria and yeasts tightly associated
with spores of an isolate of Glomus mosseae. Healthy spores were surface disinfected by combining
chloramine-T 5%, Tween-40, and cephalexin 2.5 g L-1 (CTCf). Macerates of these spores were
incubated on agar media, microorganisms were isolated, and two yeasts were characterized
(EndoGm1, EndoGm11). Both yeasts were able to solubilize low-soluble P sources (Ca and Fe
phosphates) and accumulate polyphosphates (polyPs). Sequence analysis of 18S ribosomal
deoxyribonucleic acid showed that the yeasts belong to the genera Rhodotorula or Rhodosporidium
(EndoGm1) and Cryptococcus (EndoGm11). Results from inoculation experiments showed an effect of
the spore-associated yeasts on the root growth of rice, suggesting potential tripartite
interactions with mycorrhizal fungi and plants.
|