Journal
ENVIRONMENTAL MICROBIOLOGY
Volume 22, Issue 6, Pages 2107-2123Publisher
WILEY
DOI: 10.1111/1462-2920.14968
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Funding
- National Science Foundation EPSCoR grant [1655726]
- Smithsonian Institution Secretary's Distinguished Research Fellowship
- Smithsonian Environmental Research Center Postdoc Research Fellowship
- Maryland Native Plant Society
- Washington Biologists Field Club
- Institutional Development Award (IDeA) from the National Institute of General Medical Sciences of the National Institutes of Health
- New Mexico Idea Network of Biomedical Research Excellence (NM-INBRE)
- Office Of The Director
- Office of Integrative Activities [1655726] Funding Source: National Science Foundation
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The interiors of plants are colonized by diverse microorganisms that are referred to as endophytes. Endophytes have received much attention over the past few decades, yet many questions remain unanswered regarding patterns in their biodiversity at local to global scales. To characterize research effort to date, we synthesized results from similar to 600 published studies. Our survey revealed a global research interest and highlighted several gaps in knowledge. For instance, of the 17 biomes encompassed by our survey, 7 were understudied and together composed only 7% of the studies that we considered. We found that fungal endophyte diversity has been characterized in at least one host from 30% of embryophyte families, while bacterial endophytes have been surveyed in hosts from only 10.5% of families. We complimented our survey with a vote counting procedure to determine endophyte richness patterns among plant tissue types. We found that variation in endophyte assemblages in above-ground tissues varied with host growth habit. Stems were the richest tissue in woody plants, whereas roots were the richest tissue in graminoids. For forbs, we found no consistent differences in relative tissue richness among studies. We propose future directions to fill the gaps in knowledge we uncovered and inspire further research.
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