An analysis of Pseudomonas genomic diversity in take-all infected wheat fields reveals the lasting impact of wheat cultivars on the soil microbiota

A - Papers appearing in refereed journals

Mauchline, T. H., Chedom-Fotso, D., Chandra, G., Samuels, T., Greenaway, N., Backhaus, A., Mcmillan, V. E., Canning, G., Powers, S. J., Hammond-Kosack, K. E., Hirsch, P. R., Clark, I. M., Mehrabi, Z., Roworth, J., Burnell, J. and Malone, J. G. 2015. An analysis of Pseudomonas genomic diversity in take-all infected wheat fields reveals the lasting impact of wheat cultivars on the soil microbiota. Environmental Microbiology. 17 (11), pp. 4764-4778. https://doi.org/10.1111/1462-2920.13038

AuthorsMauchline, T. H., Chedom-Fotso, D., Chandra, G., Samuels, T., Greenaway, N., Backhaus, A., Mcmillan, V. E., Canning, G., Powers, S. J., Hammond-Kosack, K. E., Hirsch, P. R., Clark, I. M., Mehrabi, Z., Roworth, J., Burnell, J. and Malone, J. G.
Abstract

Manipulation of the soil microbiota associated with crop plants has huge promise for the control of crop pathogens. However, to fully realize this potential we need a better understanding of the relationship between the soil environment and the genes and phenotypes that enable microbes to colonize plants and contribute to biocontrol. A recent 2 years of investigation into the effect of wheat variety on second year crop yield in the context of take-all fungal infection presented the opportunity to examine soil microbiomes under closely defined field conditions. Amplicon sequencing of second year soil samples showed that Pseudomonas spp. were particularly affected by the wheat cultivar grown in year one. Consequently, 318 rhizosphere-associated Pseudomonas fluorescens strains were isolated and characterized across a variety of genetic and phenotypic traits. Again, the wheat variety grown in the first year of the study was shown to exert considerable selective pressure on both the extent and nature of Pseudomonas genomic diversity. Furthermore, multiple significant correlations were identified within the phenotypic/genetic structure of the Pseudomonas population, and between individual genotypes and the external wheat field environment. The approach outlined here has considerable future potential for our understanding of plant-microbe interactions, and for the broader analysis of complex microbial communities.

KeywordsMicrobiology
Year of Publication2015
JournalEnvironmental Microbiology
Journal citation17 (11), pp. 4764-4778
Digital Object Identifier (DOI)https://doi.org/10.1111/1462-2920.13038
PubMed ID26337499
Open accessPublished as ‘gold’ (paid) open access
FunderUEA
Biotechnology and Biological Sciences Research Council
Funder project or codeWheat
[20:20 Wheat] Soil resource interactions
[20:20 Wheat] Protecting yield potential of wheat
The Wheat Genetic Improvement Network (WGIN) - Improving the environmental footprint of farming through crop genetics and targeted traits analysis [2008-2013]
Optimisation of nutrients in soil-plant systems: How can we control nitrogen cycling in soil?
Statistics Department (Rothamsted)
Publisher's version
PublisherWiley
Grant IDBB/J004553/1
ISSN1462-2912

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