期刊
MICROBIOLOGY
卷 82, 期 3, 页码 306-315出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0026261713030107
关键词
Sphagnum mosses; endophytic bacteria; biocontrol; plant growth promotion
类别
资金
- Russian Federation for Basic Research [09-04-91007-ANF_a]
- Ministry for Education and Science [16.M04.11.0013]
- Common Use Centre Genome Technologies and Cell Biology of the Agriculture Department of the Russian Academy of Agricultural Sciences [16.552.11.7047]
- Austrian Science Fund (FWF) [I 183] Funding Source: researchfish
Sphagnum mosses serve as a unique habitat for microorganisms, which play an important role both for the host plants and the peatland ecosystems. The aim of the present study was to isolate endophytic bacteria from the tissues of Sphagnum mosses and to screen them for strains promising for further application in agricultural microbiology. About 50 samples of Sphagnum fallax (H. Klinggr.) H. Klinggr. and Sphagnum magellanicum Brid. were collected in the Austrian Alps and the Lenindgrad Region of Russia in 2009-2010. Endophytic bacteria were detected inside the moss plants using fluorescent in situ hybridization (FISH) followed by confocal laser scanning microscopy (CLSM). Altogether, 283 isolates were obtained by cultivation on the nutrient media. Examination of the isolates for the antagonistic activity revealed that more than 50% of them could suppress the growth of phytopathogenic and toxigenic fungi. More than 30% of isolates showed some antagonistic activity against microbial phytopathogens. The isolated strains could colonize crops and promote their growth. Molecular-genetic identification coupled with physiological/biochemical characterization showed that the dominant endophytic groups belonged to the genera Burkholderia, Pseudomonas, Flavobacterium, Serratia and Collimonas. The isolated endophytes were shown to be promising objects for the development of effective growth-promoting and protective microbiological preparations to be used in agriculture.
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