Summary
This study characterises the root bacterial microbiome of red clover (Trifolium pratense), a legume of agricultural significance, combining culture-dependent and molecular methods to identify dominant taxa. Through controlled microcosm inoculation experiments, the authors demonstrate that whilst individual abundant microbiome members can compromise plant growth in isolation, community-level diversity buffers against these negative effects, suggesting functional redundancy and complementarity within the root microbiota.
UK applicability
Red clover is an established forage crop in UK grassland and agroecological systems, making findings directly relevant to UK pasture management and soil health strategies. The demonstration that microbiome diversity alleviates individual pathogenic or growth-inhibitory members has implications for promoting resilience in UK farming systems through microbial community management.
Key measures
Root microbiome taxonomic composition (proportion of Rhizobia and other bacterial genera); bacterial isolate library size and coverage of abundant microbiome members; plant growth outcomes under monoculture and mixed microbial inoculations
Outcomes reported
The study characterised the root bacterial microbiome of Trifolium pratense (red clover) using culture-dependent and independent methods, identifying dominant taxa and their functional roles. Inoculation experiments demonstrated that individual microbiome members can negatively affect plant growth when isolated, but these effects are alleviated in more diverse microbial communities.
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