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phoD Alkaline Phosphatase Gene Diversity in Soil
Sabine A Ragot1, Michael A Kertesz2, Else K Bünemann3
1Institute of Agricultural Sciences, ETH Zurich, Lindau, Switzerland sabine.ragot@usys.ethz.ch.
Applied and Environmental Microbiology
|August 9, 2015
Summary
New primers reveal the vast diversity of PhoD alkaline phosphatase genes in soil, uncovering their widespread distribution across bacterial phyla and environmental conditions. This tool enhances the study of soil microbial communities and phosphorus cycling.
Area of Science:
- Microbial Ecology
- Biogeochemistry
- Molecular Biology
Background:
- Phosphatase enzymes, like PhoD alkaline phosphatase, are crucial for recycling organic phosphorus in soils.
- Understanding the distribution of these enzymes is key to soil health and nutrient cycling.
Purpose of the Study:
- To analyze the taxonomic and environmental distribution of phoD genes.
- To develop and validate a new set of primers for studying phoD diversity in soil.
Main Methods:
- Whole-genome and metagenome database analysis.
- Development and validation of novel primers targeting soil phoD genes.
- 454 sequencing of soil samples from diverse global locations.
Main Results:
- PhoD alkaline phosphatase genes are widespread across 20 bacterial phyla and ubiquitous in soil.
- The new primers identified 7 times more phoD operational taxonomic units compared to previous primers.
- PhoD community structure was significantly correlated with soil pH (4.2-6.8).
Conclusions:
- The developed primers are a valuable tool for revealing the extensive diversity of phoD alkaline phosphatase in environmental samples.
- This research highlights the significant role of PhoD in soil phosphorus cycling and microbial ecology.
- Soil pH is a key factor influencing the composition of phoD bacterial communities.
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