Spores of the mycorrhizal fungus Glomus mosseae host yeasts that solubilize phosphate and accumulate polyphosphates

被引：41

作者：

Alonso, Loreli Mirabal ^{[3
]}

Kleiner, Diethelm ^{[2
]}

Ortega, Eduardo ^{[1
]}

机构：

[1] Univ Havana, Fac Biol, Dept Plant Biol, Plant Physiol Lab, Havana, Cuba

[2] Univ Bayreuth, Bayreuth, Germany

[3] Natl Inst Agr Sci INCA, Havana, Cuba

来源：

MYCORRHIZA | 2008年 / 18卷 / 04期

关键词：

mycorrhizal fungi; associated yeast; spore disinfection; Glomus mosseae; phosphate solubilization;

D O I：

10.1007/s00572-008-0172-7

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

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.

引用

页码：197 / 204

页数：8

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