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The ‘known’ genetic potential for microbial communities to degrade organic phosphorus is reduced in low-pH soils

Lidbury, I. D. E. A., Fraser, T., Murphy, A. R. J., Scanlan, D. J., Bending, G. D., Jones, A. M. E., Moore, J. D., Goodall, A., Tibbett, M., Hammond, J. P. and Wellington, E. M. H. (2017) The ‘known’ genetic potential for microbial communities to degrade organic phosphorus is reduced in low-pH soils. MicrobiologyOpen, 6 (4). e00474. ISSN 2045-8827

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To link to this item DOI: 10.1002/mbo3.474

Abstract/Summary

In soil, bioavailable inorganic orthophosphate is found at low concentrations and thus limits biological growth. To overcome this phosphorus scarcity, plants and bacteria secrete numerous enzymes, namely acid and alkaline phosphatases, which cleave orthophosphate from various organic phosphorus substrates. Using profile hidden Markov modeling approaches, we investigated the abundance of various non specific phosphatases, both acid and alkaline, in metagenomes retrieved from soils with contrasting pH regimes. This analysis uncovered a marked reduction in the abundance and diversity of various alkaline phosphatases in low-pH soils that was not counterbalanced by an increase in acid phosphatases. Furthermore, it was also discovered that only half of the bacterial strains from different phyla deposited in the Integrated Microbial Genomes database harbor alkaline phosphatases. Taken together, our data suggests that these ‘phosphatase lacking’ isolates likely increase in low-pH soils and future research should ascertain how these bacteria overcome phosphorus scarcity.

Item Type:Article
Refereed:Yes
Divisions:Interdisciplinary centres and themes > Centre for Food Security
Interdisciplinary centres and themes > Soil Research Centre
Faculty of Life Sciences > School of Agriculture, Policy and Development > Biodiversity, Crops and Agroecosystems Division > Centre for Agri-environmental Research (CAER)
Faculty of Life Sciences > School of Agriculture, Policy and Development > Biodiversity, Crops and Agroecosystems Division > Crops Research Group
ID Code:70292
Publisher:Wiley

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