Spatial distribution and identification of bacteria in stressed environments capable to weather potassium aluminosilicate mineral.
Braz J Microbiol
; 51(2): 751-764, 2020 Jun.
Article
en En
| MEDLINE
| ID: mdl-31898251
ABSTRACT
In the present study, we studied the distribution of silicate mineral weathering bacteria (SWB) in stressed environments that release potassium from insoluble source of mineral. Out of 972 isolates, 340 isolates were positive and mineral weathering potential ranged from 5.55 to 180.05%. Maximum abundance of SWB occurred 44.71% in saline environment followed by 23.53% in low temperature and 12.35% each in high temperature and moisture deficit. Among isolates, silicate mineral weathering efficiency ranged from 1.9 to 72.8 µg mL-1 available K in liquid medium. The phylogenetic tree of SWB discriminated in three clusters viz. Firmicutes, Proteobacteria and Actinobacteria. This is the first report on SWB in stressed environments and identified 27 genera and 67 species which is not reported earlier. Among them Bacillus was the predominant genera (58.60%) distantly followed by Pseudomonas (6.37%), Staphylococcus (5.10%) and Paenibacillus (4.46%). These bacterial strains could be developed as inoculants for biological replenishment of K in stressed soils. Graphical abstract.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Microbiología del Suelo
/
Estrés Fisiológico
/
Bacterias
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Silicatos
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Compuestos de Potasio
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Compuestos de Aluminio
Tipo de estudio:
Diagnostic_studies
Idioma:
En
Revista:
Braz J Microbiol
Año:
2020
Tipo del documento:
Article
País de afiliación:
India