Journal
ENVIRONMENTAL MICROBIOLOGY
Volume 24, Issue 11, Pages 5524-5533Publisher
WILEY
DOI: 10.1111/1462-2920.16164
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Funding
- Biotechnology and Biological Sciences Research Council [BB/R017859/1]
- Gatsby Charitable Foundation [GAT3395/GLD]
- University of Massachusetts Amherst
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“The plant common symbiosis signalling (SYM) pathway plays a significant role in influencing the abundance and composition of the root microbiota in Medicago truncatula, under both nitrogen and phosphorus limitations.”
The plant common symbiosis signalling (SYM) pathway has shared function between interactions with rhizobia and arbuscular mycorrhizal fungi, the two most important symbiotic interactions between plants and microorganisms that are crucial in plant and agricultural yields. Here, we determine the role of the plant SYM pathway in the structure and abundance of the microbiota in the model legume Medicago truncatula and whether this is controlled by the nitrogen or phosphorus status of the plant. We show that SYM mutants (dmi3) differ substantially from the wild type (WT) in the absolute abundance of the root microbiota, especially under nitrogen limitation. Changes in the structure of the microbiota were less pronounced and depended on both plant genotype and nutrient status. Thus, the SYM pathway has a major impact on microbial abundance in M. truncatula and also subtly alters the composition of the microbiota.
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