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Authors Mohamed, DJ; Martiny, JBH
Author Full Name Mohamed, Devon J.; Martiny, Jennifer B. H.
Title Patterns of fungal diversity and composition along a salinity gradient
Source ISME JOURNAL
Language English
Document Type Article
Author Keywords community composition; estuary; fungi; ribosomal RNA; salinity
Keywords Plus AMMONIA-OXIDIZING BACTERIA; MICROBIAL COMMUNITIES; PLANT DIVERSITY; MYCORRHIZAL FUNGI; SOIL; BIODIVERSITY; PRODUCTIVITY; BIOGEOGRAPHY; SUCCESSION; SEDIMENTS
Abstract Estuarine salinity gradients are known to influence plant, bacterial and archaeal community structure. We sequenced 18S rRNA genes to investigate patterns in sediment fungal diversity (richness and evenness of taxa) and composition (taxonomic and phylogenetic) along an estuarine salinity gradient. We sampled three marshes-a salt, brackish and freshwater marsh-in Rhode Island. To compare the relative effect of the salinity gradient with that of plants, we sampled fungi in plots with Spartina patens and in plots from which plants were removed 2 years prior to sampling. The fungal sediment community was unique compared with previously sampled fungal communities; we detected more Ascomycota (78%), fewer Basidiomycota (6%) and more fungi from basal lineages (16%) (Chytridiomycota, Glomeromycota and four additional groups) than typically found in soil. Across marshes, fungal composition changed substantially, whereas fungal diversity differed only at the finest level of genetic resolution, and was highest in the intermediate, brackish marsh. In contrast, the presence of plants had a highly significant effect on fungal diversity at all levels of genetic resolution, but less of an effect on fungal composition. These results suggest that salinity (or other covarying parameters) selects for a distinctive fungal composition, and plants provide additional niches upon which taxa within these communities can specialize and coexist. Given the number of sequences from basal fungal lineages, the study also suggests that further sampling of estuarine sediments may help in understanding early fungal evolution. The ISME Journal (2011) 5, 379-388; doi: 10.1038/ismej.2010.137; published online 30 September 2010
Author Address [Mohamed, Devon J.; Martiny, Jennifer B. H.] Univ Calif Irvine, Dept Ecol & Evolutionary Biol, Irvine, CA 92697 USA; [Mohamed, Devon J.] Brown Univ, Dept Ecol & Evolutionary Biol, Providence, RI 02912 USA
Reprint Address Martiny, JBH (corresponding author), Univ Calif Irvine, Dept Ecol & Evolutionary Biol, 321 Steinhaus, Irvine, CA 92697 USA.
E-mail Address jmartiny@uci.edu
ResearcherID Number Martiny, Jennifer/AAB-9323-2019; Guan, Xiaokang/A-6675-2012
ORCID Number Martiny, Jennifer/0000-0002-2415-1247
Funding Agency and Grant Number NSFNational Science Foundation (NSF) [MCB-0701494]; Gordon and Betty Moore FoundationGordon and Betty Moore Foundation
Funding Text We gratefully acknowledge Keryn Bromberg Gedan, Caitlin Mullan Crain and Mark Bertness for the establishment and maintenance of field sites. We are indebted to Claudia Weihe, Manasa Panda, Sneha Pathak, Mani Vahidi and Heather Reed for laboratory help. We also thank Steven Allison, Keryn Bromberg Gedan, Adam Martiny and several anonymous reviewers for comments that greatly improved the manuscript. This work was supported by an NSF Graduate Research Fellowship to DJB, NSF grant MCB-0701494, and the Gordon and Betty Moore Foundation.
Times Cited 100
Total Times Cited Count (WoS, BCI, and CSCD) 103
Publisher NATURE PUBLISHING GROUP
Publisher City LONDON
Publisher Address MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
ISSN 1751-7362
29-Character Source Abbreviation ISME J
ISO Source Abbreviation ISME J.
Publication Date MAR
Year Published 2011
Volume 5
Issue 3
Beginning Page 379
Ending Page 388
Digital Object Identifier (DOI) 10.1038/ismej.2010.137
Page Count 10
Web of Science Category Ecology; Microbiology
Subject Category Environmental Sciences & Ecology; Microbiology
Document Delivery Number 756NZ
Unique Article Identifier WOS:000290021000002
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