气候变化领域集成服务门户(CCPortal): Bio-weathering of granites from Eastern Dharwar Craton (India): a tango of bacterial metabolism and mineral chemistry

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DOI	10.1007/s10533-021-00791-x
	Bio-weathering of granites from Eastern Dharwar Craton (India): a tango of bacterial metabolism and mineral chemistry
	Chikkanna A.; Ghosh D.; Sajeev K.
发表日期	2021
ISSN	1682563
起始页码	303
结束页码	322
卷号	153 期号:3
英文摘要	Abstract: The bio-weathering process contributes majorly in the physical shaping of earth’s surface. The weathering of mineral is coupled to the formation of new minerals and release of bio-available nutrients for flora as well as microbial communities. Granites from the Eastern Dharwar Craton (EDC) India are felsic plutonic igneous rock composed of nutritive minerals. The major elemental composition of granite is such that, it forms an ancient ecological niche for diverse microbial communities. Interdisciplinary approaches were taken to construct a more comprehensive understanding of potential functional attributes of Actinobacteria in bio-weathering of granite. This work includes molecular characterization of the isolated strains, detecting their granite bioweathering potentials through leaching experiments where Nocardioides showed highest mineral leaching indices with iron (Fe) being the most leached element (~ 6372 ppm). Scanning electron microscopic imaging indicated biofilm formation and Actinobacterial hyphae colonization. Petrographic, XRD and FTIR based study shows formation of secondary minerals (kaolinite, vermiculite and smectite). To further establish the hypothesis of soil formation and nutrition transport, long-term (360 days) microcosm was developed. Deterioration and grain size alternations with increase in clay based minerals (kaolinite, vermiculite) and total protein content was observed. A bioinformatics based functional biodiversity approach in link to global bio-weathering of rocks by the genus Actinobacteria was adopted to understand their distribution patterns and contribution to alterations of rock minerals. Graphic abstract: [Figure not available: see fulltext.] © 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG.
英文关键词	Actinobacteria; Bio-weathering; Biogeography; Biotite; Feldspar; Plagioclase
语种	英语
来源期刊	Biogeochemistry
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184604
作者单位	Laboratory of Biogeochem-Mystery, Centre for Earth Sciences, Indian Institute of Science, Bangalore, 560012, India; Murdoch University, 90 South Street, Perth CampusMurdoch, WA 6150, Australia; Centre for Earth Sciences, Indian Institute of Science, Bangalore, 560012, India
推荐引用方式 GB/T 7714	Chikkanna A.,Ghosh D.,Sajeev K.. Bio-weathering of granites from Eastern Dharwar Craton (India): a tango of bacterial metabolism and mineral chemistry[J],2021,153(3).
APA	Chikkanna A.,Ghosh D.,&Sajeev K..(2021).Bio-weathering of granites from Eastern Dharwar Craton (India): a tango of bacterial metabolism and mineral chemistry.Biogeochemistry,153(3).
MLA	Chikkanna A.,et al."Bio-weathering of granites from Eastern Dharwar Craton (India): a tango of bacterial metabolism and mineral chemistry".Biogeochemistry 153.3(2021).