Plant domestication and the assembly of bacterial and fungal communities associated with strains of the common sunflower, Helianthus annuus.

Autor: Leff JW; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, 80309-0216, USA.; Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, 80309, USA., Lynch RC; Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, 80309, USA.; Medicinal Genomics, 12 Gill St, Woburn, MA, 01801, USA., Kane NC; Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, 80309, USA., Fierer N; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, 80309-0216, USA.; Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, 80309, USA.
Jazyk: angličtina
Zdroj: The New phytologist [New Phytol] 2017 Apr; Vol. 214 (1), pp. 412-423. Date of Electronic Publication: 2016 Nov 23.
DOI: 10.1111/nph.14323
Abstrakt: Root and rhizosphere microbial communities can affect plant health, but it remains undetermined how plant domestication may influence these bacterial and fungal communities. We grew 33 sunflower (Helianthus annuus) strains (n = 5) that varied in their extent of domestication and assessed rhizosphere and root endosphere bacterial and fungal communities. We also assessed fungal communities in the sunflower seeds to investigate the degree to which root and rhizosphere communities were influenced by vertical transmission of the microbiome through seeds. Neither root nor rhizosphere bacterial communities were affected by the extent of sunflower domestication, but domestication did affect the composition of rhizosphere fungal communities. In particular, more modern sunflower strains had lower relative abundances of putative fungal pathogens. Seed-associated fungal communities strongly differed across strains, but several lines of evidence suggest that there is minimal vertical transmission of fungi from seeds to the adult plants. Our results indicate that plant-associated fungal communities are more strongly influenced by host genetic factors and plant breeding than bacterial communities, a finding that could influence strategies for optimizing microbial communities to improve crop yields.
(© 2016 The Authors. New Phytologist © 2016 New Phytologist Trust.)
Databáze: MEDLINE
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