NDLI: Abundance and diversity of sulphur-oxidising bacteria and their role in oxidising elemental sulphur in cropping soils

Content Provider	Springer Nature Link
Author	Zhao, Cuicui Gupta, Vadakattu V. S. R. Degryse, Fien McLaughlin, Mike J.
Copyright Year	2016
Abstract	There is an increasing interest in elemental S as a S fertiliser source, but to be available to plants, elemental S has to be oxidised to sulphate. Elemental S oxidation is known to be affected by soil properties and environmental conditions, but it is still unclear if elemental S oxidation is related to the abundance and diversity of S-oxidising bacteria in cropping soils. In this study, we investigated the abundance and diversity of S-oxidising bacteria by targeting a functional gene (soxB) and assessed their relationship with elemental S oxidation in ten cropping soils. Positive correlations between soil C, N and S contents on the one hand and the abundances of soxB and 16S ribosomal deoxyribonucleic acid (rRNA) genes on the other suggested that the abundances of S oxidising bacteria in particular and of bacteria in general depend on soil C and nutrient supply. Both soxB and 16S rRNA gene abundances were significantly correlated with the oxidation rate of elemental S (P < 0.05). In addition, more than 80% of the variation in the oxidation rate of elemental S could be explained by the combination of soxB or 16S rRNA gene abundances and soil pH, suggesting that pH not only affected bacterial abundances but also their activity during elemental S oxidation. Clone libraries constructed with the soxB primers showed genera belonging to Alphaproteobacteria, Betaproteobacteria and Deltaproteobacteria and Actinobacteria. The phylogenetic diversity and relative distribution of soxB clones revealed great differences across soils. However, no direct linkage was found between the diversity of S-oxidising bacteria and elemental S oxidation rate.
Starting Page	159
Ending Page	169
Page Count	11
File Format	PDF
ISSN	01782762
Journal	Biology and Fertility of Soils
Volume Number	53
Issue Number	2
e-ISSN	14320789
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-12-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Sulphur Oxidisers soxB Bacteria Diversity Agriculture Soil Science & Conservation
Content Type	Text
Resource Type	Article
Subject	Agronomy and Crop Science Soil Science Microbiology

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