Stability and succession of the rhizosphere microbiota depends upon plant type and soil composition.

ABSTRACT: We examined succession of the rhizosphere microbiota of three model plants (Arabidopsis, Medicago and Brachypodium) in compost and sand and three crops (Brassica, Pisum and Triticum) in compost alone. We used serial inoculation of 24 independent replicate microcosms over three plant generations for each plant/soil combination. Stochastic variation between replicates was surprisingly weak and by the third generation, replicate microcosms for each plant had communities that were very similar to each other but different to those of other plants or unplanted soil. Microbiota diversity remained high in compost, but declined drastically in sand, with bacterial opportunists and putative autotrophs becoming dominant. These dramatic differences indicate that many microbes cannot thrive on plant exu

SUBMITTER: Tkacz A 

PROVIDER: S-EPMC4611498 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature