Reciprocal influence of soil, phyllosphere and aphid microbiomes

Wolfgang, Adrian; Tack, Ayco J. M.; Berg, Gabriele; Abdelfattah, Ahmed

doi:10.21203/rs.3.rs-2651152/v1

Cited by 2 publications

(1 citation statement)

References 73 publications

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“…Given that our results were not influenced by soil cover, meaning that microbial spillover between compartments can be excluded, an alternative mechanistic explanation to our observations might rely on the transfer of microorganisms directly from belowground to aboveground compartments via the xylem. This hypothesis is supported by recent work on oak seedlings inoculated in a controlled gnotobiotic system, which showed that the aphid microbiota was influenced by the soil microbial community, although there was no possibility of direct contact between the two compartments [37]. However, when looking at changes in the abundance of ASVs as an effect of soil inoculum, we did not observe overlapping changes in the leaf and herbivore microbiota, which would be expected if these microorganisms were enriched via xylem sap.…”

Section: Discussionmentioning

confidence: 99%

Soil microbiota and herbivory drive the assembly of plant-associated microbial communities through different mechanisms

Malacrinò

Bennett

2022

Preprint

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Plant-associated microbiomes are key to shaping many aspects of plant biology, including their fitness, ecology, and evolution. While several studies focused on testing the effect of different factors (e.g., plant genotype, soil, stressors) on the assembly of plant microbiomes, we still know a little about the possible mechanisms that drive these effects. In this study we tested whether soil microbial community and herbivory influence the microbial community of tomato plants, and whether their influence in different plant compartments is driven by active (via plant) or passive (via microbial spillover) mechanisms. We grew our plants in soils hosting three different microbial communities, we covered (or not) the soil surface to prevent (or allow) passive microbial spillover between compartments, and we exposed them (or not) to herbivory by Manduca sexta. Results suggest that the soil-driven effect was detectable regardless of soil coverage, suggesting that this effect might be mediated by the plant. On the other hand, the herbivore-driven effect on the rhizosphere microbiota was detectable only when the soil cover was absent, suggesting that this effect might be driven by microbial spillover. These results promote understanding of the drivers of plant microbiome assembly, their relative strength, and the mechanisms behind them.

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Section: Discussionmentioning

confidence: 99%

Soil microbiota and herbivory drive the assembly of plant-associated microbial communities through different mechanisms

Malacrinò

Bennett

2022

Preprint

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Plant microbiomes as contributors to agricultural terroir

Johnston-Monje,

Vergara,

Lopez-Mejia

et al. 2023

Front. Agron.

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Agricultural products such as tea, chocolate, coffee and wine are valued for their sensorial and nutritional qualities. Variation in the growing conditions of a crop can influence the plant’s phenotype, thus it behooves agriculturalists to optimize the conditions on their farms to grow the highest quality product. The set of growing conditions associated with a certain geographic location and its influence on the product’s chemistry is known as terroir. Although terroir plays a significant role in marketing and consumer appreciation as well as product identity and valorization, rarely are the biochemical differences or the factors creating them very well understood. The word derives from the Latin for “land”, suggesting terroir is simply a function of the geographical location where a plant grew, while in its modern usage, terroir is understood to be the result of soil type, climate, landscape, topography, biotic interactions and agricultural practice. Except for fermented food products like wine and chocolate, plant associated microbiomes have been little studied for their contribution to a crop’s terroir; however, modern metagenomics and metabolomics technologies have given scientists the tools to better observe how microbial diversity can impact the chemical variation in plant products. Differences in the microbiomes inhabiting plant organs can change phytochemistry by altering host metabolism, for example increasing the nutrients absorbed by roots that then are deposited in leaves, seeds and fruits. Plant associated microbes can consume plant molecules, removing them from the metabolome, or they can contribute smells and flavors of their own. This review aims to synthesize research into rhizosphere, endosphere, phyllosphere, spermosphere, carposphere, and anthosphere microbiome influences on plant biochemistry and crop derived products, while helping to increase the appreciation that beneficial microbes are able to contribute to agriculture by improving phytochemical quality.

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Reciprocal influence of soil, phyllosphere and aphid microbiomes

Cited by 2 publications

References 73 publications

Soil microbiota and herbivory drive the assembly of plant-associated microbial communities through different mechanisms

Soil microbiota and herbivory drive the assembly of plant-associated microbial communities through different mechanisms

Plant microbiomes as contributors to agricultural terroir

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