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Publication Type J
Authors Jackson, KL; Whitcraft, CR; Dillon, JG
Author Full Name Jackson, Karen L.; Whitcraft, Christine R.; Dillon, Jesse G.
Title Diversity of Desulfobacteriaceae and Overall Activity of Sulfate-Reducing Microorganisms in and Around a Salt pan in a Southern California Coastal Wetland
Source WETLANDS
Language English
Document Type Article
Author Keywords Coastal salt pan; Desulfobacteriaceae; Sulfate-reducing bacteria; Sulfate reduction; Salt marshes
Keywords Plus MICROBIAL COMMUNITIES; SPARTINA-ALTERNIFLORA; MARINE SEDIMENT; MARSH SEDIMENTS; SULFUR CYCLE; GEN. NOV.; BACTERIA; REDUCTION; RHIZOSPHERE; GRADIENT
Abstract Sulfate-reducing bacteria (SRB) are key mediators of anaerobic carbon cycling in coastal salt marsh sediments and have been shown to be important decomposer communities even in hypersaline habitats. Understanding how SRB function in various salt marsh habitats (vegetated, salt pans) is crucial to advancing our knowledge of salt marsh function. We compare overall sulfate reducing activity and the diversity of a subset of SRB (Desulfobacteriaceae) in two hypersaline sediments (salt pan and nearby area with desiccated vegetation) with a regularly inundated control site within the Huntington Beach Wetlands (HBW). Biological activity was quantified using radiotracer studies to measure sulfate reduction rates (SRR) with and without carbon amendment. All sites showed enhanced SRR under carbon amendment, suggesting short-term carbon limitation. Unique communities of Desulfobacteriaceae were found in all three sites with increased incidence of halotolerant genotypes in the salt pan. These findings indicate that, despite reduced anaerobic respiratory activity, highly diverse and functional deltaproteobacterial communities exist in salt pan and surrounding hypersaline habitats in coastal salt marshes in southern California.
Author Address [Jackson, Karen L.; Whitcraft, Christine R.; Dillon, Jesse G.] Calif State Univ Long Beach, Dept Biol Sci, Long Beach, CA 90840 USA; [Jackson, Karen L.] US FDA, Irvine, CA 92603 USA
Reprint Address Dillon, JG (reprint author), Calif State Univ Long Beach, Dept Biol Sci, 1250 Bellflower Blvd, Long Beach, CA 90840 USA.
E-mail Address jesse.dillon@csulb.edu
Funding Agency and Grant Number National Institutes of General Medical Sciences [5R25GM050089-12]
Funding Text The authors would like to thank the Huntington Beach Wetland Conservancy and Kristen Bender for allowing us to access the field site and for facilitating our research. We thank Nathan McLain for assistance in depositing sequences in Genbank and Salvador Deniz for his assistance in the laboratory. This research was funded in part by the National Institutes of General Medical Sciences Grant # 5R25GM050089-12.
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Cited Reference Count 48
Publisher SPRINGER
Publisher City DORDRECHT
Publisher Address VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
ISSN 0277-5212
29-Character Source Abbreviation WETLANDS
ISO Source Abbreviation Wetlands
Publication Date OCT
Year Published 2014
Volume 34
Issue 5
Beginning Page 969
Ending Page 977
Digital Object Identifier (DOI) 10.1007/s13157-014-0560-z
Page Count 9
Web of Science Category Ecology; Environmental Sciences
Subject Category Environmental Sciences & Ecology
Document Delivery Number AQ8EW
Unique Article Identifier WOS:000343057700011
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