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Microbes, mutualism, and range margins: testing the fitness consequences of soil microbial communities across and beyond a native plant's range. | LitMetric

Microbes, mutualism, and range margins: testing the fitness consequences of soil microbial communities across and beyond a native plant's range.

New Phytol

Department of Plant and Microbial Biology, University of Minnesota, 140 Gortner Labs, 1479 Gortner Avenue, Saint Paul, MN, 55108, USA.

Published: March 2021

AI Article Synopsis

  • - The study explores how interactions between the native plant Clarkia xantiana and soil microbes (fungi and bacteria) impact the plant's ability to thrive in different geographic locations.
  • - It finds that certain microbial communities can enhance plant fitness, especially at the outer edges of the plant's range, though the plant may also face challenges due to the presence of new microbes when expanding its range.
  • - Overall, the research suggests that the success of plants in new areas is influenced by a balance of beneficial and harmful plant-microbe interactions, which could affect how species shift their ranges in response to environmental changes.

Article Abstract

Interactions between plants and soil fungi and bacteria are ubiquitous and have large effects on individual plant fitness. However, the degree to which spatial variation in soil microbial communities modulates plant species' distributions remains largely untested. Using the California native plant Clarkia xantiana ssp. xantiana we paired glasshouse and field reciprocal transplants of plant populations and soils to test whether plant-microbe interactions affect the plant's geographic range limit and whether there is local adaptation between plants and soil microbe communities. In the field and glasshouse, one of the two range interior inocula had a positive effect on plant fitness. In the field, this benefit was especially pronounced at the range edge and beyond, suggesting possible mutualist limitation. In the glasshouse, soil inocula from beyond-range tended to increase plant growth, suggesting microbial enemy release beyond the range margin. Amplicon sequencing revealed stark variation in microbial communities across the range boundary. Plants dispersing beyond their range limit are likely to encounter novel microbial communities. In C. x. xantiana, our results suggest that range expansion may be facilitated by fewer pathogens, but could also be hindered by a lack of mutualists. Both negative and positive plant-microbe interactions will likely affect contemporary range shifts.

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Source
http://dx.doi.org/10.1111/nph.17102DOI Listing

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