Differences in weathering pattern, stress resistance and community structure of culturable rock-weathering bacteria between altered rocks and soils
Open Access
- 17 April 2018
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in RSC Advances
- Vol. 8 (26), 14201-14211
- https://doi.org/10.1039/c8ra01268g
Abstract
In this study, we isolated and characterized rock-weathering bacteria from the surfaces of less and more altered tuffs, along with the adjacent soils, with respect to their rock weathering pattern, stress resistance, community structure, and the changes in these rocks and soils. Using a moderate-nutrition medium, we obtained 150 isolates from the rocks and soils. The rock-weathering patterns of the isolates were characterized using batch cultures that measure the quantity of Si, Al, and Fe released from tuff under aerobic conditions. Based on the potential of the bacterial influence on the element releases, the isolates could be grouped into highly, moderately, and least effective element solubilizers, respectively. Significantly more highly effective Al and Fe solubilizers were observed in the altered rocks, while the soils had more highly effective Si solubilizers. Furthermore, more isolates from the altered rocks significantly acidified the culture medium in the rock weathering process. Dynamic changes in the element release showed the distinct element releasing patterns of three selected isolates. More isolates from the altered rocks could grow at 4 °C or at 55 °C or at pH 4. Some isolates from the altered rocks could grow at pH 10 and with 10–15% (w/v) NaCl. The altered rocks and the soils existed in diverse and different highly weathering-specific culturable rock-weathering community structures. The changes in the culturable weathering communities between the altered rocks and the soils were attributable not only to major bacterial groups but also to a change in the minor population structure.Funding Information
- Bengbu Medical College (BYKY1611ZD)
This publication has 43 references indexed in Scilit:
- A Three-Scale Analysis of Bacterial Communities Involved in Rocks Colonization and Soil Formation in High Mountain EnvironmentsCurrent Microbiology, 2013
- Correlation of the Abundance of Betaproteobacteria on Mineral Surfaces with Mineral Weathering in Forest SoilsApplied and Environmental Microbiology, 2012
- Rock weathering by indigenous heterotrophic bacteria of Bacillus spp. at different temperature: a laboratory experimentTschermaks Mineralogische und Petrographische Mitteilungen, 2012
- Bacterial weathering and its contribution to nutrient cycling in temperate forest ecosystemsResearch in Microbiology, 2011
- Influence of Forest Trees on the Distribution of Mineral Weathering-Associated Bacterial Communities of the Scleroderma citrinum MycorrhizosphereApplied and Environmental Microbiology, 2010
- Weathering-Associated Bacteria from the Damma Glacier Forefield: Physiological Capabilities and Impact on Granite DissolutionApplied and Environmental Microbiology, 2010
- Naïve Bayesian Classifier for Rapid Assignment of rRNA Sequences into the New Bacterial TaxonomyApplied and Environmental Microbiology, 2007
- Specific Detection and Real-Time PCR Quantification of Potentially Mycophagous Bacteria Belonging to the Genus Collimonas in Different Soil EcosystemsApplied and Environmental Microbiology, 2007
- Effect of the Mycorrhizosphere on the Genotypic and Metabolic Diversity of the Bacterial Communities Involved in Mineral Weathering in a Forest SoilApplied and Environmental Microbiology, 2007
- A rapid and precise method for routine determination of organic carbon in soilCommunications in Soil Science and Plant Analysis, 1988