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Publication Type J
Authors Rathore, A. P., D. R. Chaudhary and B. Jha
Title SEASONAL PATTERNS OF MICROBIAL COMMUNITY STRUCTURE AND ENZYME ACTIVITIES IN COASTAL SALINE SOILS OF PERENNIAL HALOPHYTES
Source Land Degradation & Development
Author Keywords coastal ecosystem microbial community structure plant-soil microbe interaction PLFA soil enzyme phospholipid fatty-acid yellow-river delta salt-marsh vertical-distribution desert ecosystem organic-matter climate-change china rhizosphere profiles
Abstract Perennial halophytes are known to be one of the most influential parameters in coastal ecosystem affecting ecosystem processes. The aim of this study was to investigate the changes in soil microbial community structure and enzyme activities in different halophyte-covered soils (Arthrocnemum indicum, Aeluropus lagopoides, Heleochloa setulosa and Suaeda nudiflora) with control soil (un-vegetated) that were collected in three seasons (rainy, winter and summer) from intertidal coastal soils of Gujarat, India. Soil microbial community structure was assessed using phospholipid fatty acid (PLFA) profiling. Halophytes influenced significantly soil micro-environment by exerting effects on the soil chemical characteristics, enzyme activities and microbial community structure. The activities of beta-glucosidase, urease and alkaline phosphatase were significantly higher in halophyte-covered soils than in control soil. Among four halophyte-covered soils, the highest amounts of total, bacterial, actinomycetes and fungal PLFAs were observed in Arthrocnemum soil. The concentrations of total, bacterial, actinomycetes and fungal PLFAs were also significantly higher in summer and winter seasons than in rainy season, whereas enzyme activities also vary with seasons. The non-metric multidimensional scaling analysis PLFA profiling revealed that the structure of microbial community significantly differed in all seasons as well as between control and halophyte-covered soils. These shifts in microbial community were due to the higher abundance of Gram-positive, total bacterial and actinomycetes PLFAs in summer and winter seasons than in rainy season, whereas abundance of fungal biomarker was significantly higher in rainy season than in other seasons. Among halophytes, significantly higher abundance of Gram-positive, Gram-negative and total bacteria was observed in Arthrocnemum, Heleochloa and Suaeda whereas the lowest in control soil. Halophytes exhibited improved soil microbial activities, which is important for healthy ecosystem. Copyright (C) 2017 John Wiley & Sons, Ltd.
Author Address [Rathore, Aditya P.; Chaudhary, Doongar R.; Jha, Bhavanath] Cent Salt & Marine Chem Res Inst, CSIR, Marine Biotechnol & Ecol Div, GB Marg, Bhavnagar 364002, Gujarat, India. Chaudhary, DR; Jha, B (reprint author), Cent Salt & Marine Chem Res Inst, CSIR, Marine Biotechnol & Ecol Div, GB Marg, Bhavnagar 364002, Gujarat, India. drchaudhary@csmcri.org; bjha@csmcri.org
ISSN 1085-3278
ISBN 1085-3278
29-Character Source Abbreviation Land Degrad. Dev.
Publication Date Jul
Year Published 2017
Volume 28
Issue 5
Beginning Page 1779-1790
Digital Object Identifier (DOI) 10.1002/ldr.2710
Unique Article Identifier WOS:000407990500027
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