NDLI: Tropical Soil Bacterial Communities in Malaysia: pH Dominates in the Equatorial Tropics Too

Content Provider	Springer Nature Link
Author	Tripathi, Binu M. Kim, Mincheol Singh, Dharmesh Lee Cruz, Larisa Lai Hoe, Ang Ainuddin, A. N. Go, Rusea Rahim, Raha Abdul Husni, M. H. A. Chun, Jongsik Adams, Jonathan M.
Copyright Year	2012
Abstract	The dominant factors controlling soil bacterial community variation within the tropics are poorly known. We sampled soils across a range of land use types—primary (unlogged) and logged forests and crop and pasture lands in Malaysia. PCR-amplified soil DNA for the bacterial 16S rRNA gene targeting the V1–V3 region was pyrosequenced using the 454 Roche machine. We found that land use in itself has a weak but significant effect on the bacterial community composition. However, bacterial community composition and diversity was strongly correlated with soil properties, especially soil pH, total carbon, and C/N ratio. Soil pH was the best predictor of bacterial community composition and diversity across the various land use types, with the highest diversity close to neutral pH values. In addition, variation in phylogenetic structure of dominant lineages (Alphaproteobacteria, Beta/Gammaproteobacteria, Acidobacteria, and Actinobacteria) is also significantly correlated with soil pH. Together, these results confirm the importance of soil pH in structuring soil bacterial communities in Southeast Asia. Our results also suggest that unlike the general diversity pattern found for larger organisms, primary tropical forest is no richer in operational taxonomic units of soil bacteria than logged forest, and agricultural land (crop and pasture) is actually richer than primary forest, partly due to selection of more fertile soils that have higher pH for agriculture and the effects of soil liming raising pH.
Starting Page	474
Ending Page	484
Page Count	11
File Format	PDF
ISSN	00953628
Journal	Microbial Ecology
Volume Number	64
Issue Number	2
e-ISSN	1432184X
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-02-23
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Nature Conservation Microbiology Ecology Geoecology/Natural Processes Microbial Ecology
Content Type	Text
Resource Type	Article
Subject	Soil Science Ecology Ecology, Evolution, Behavior and Systematics

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