Differentiating spatial from environmental effects on foliar fungal communities of Populus trichocarpa
Abstract
Abstract Aim Foliar fungi – pathogens, endophytes, epiphytes – form taxonomically diverse communities that affect plant health and productivity. The composition of foliar fungal communities is variable at spatial scales both small (e.g. individual plants) and large (e.g. continents), yet few studies have attempted to tease apart spatial from climatic factors influencing these communities. Moreover, few studies have sampled in more than 1 year to gauge interannual variation in community structure. Location The Pacific Northwest of western North America. Taxon Foliar fungi associated with the deciduous tree Populus trichocarpa . Methods In two consecutive years, we used DNA metabarcoding to characterize foliar fungal communities of Populus trichocarpa across its geographic range, which encompasses a sharp climatic transition as it crosses the Cascade Mountain Range. We used multivariate analyses to (a) test for and differentiate spatial and environmental factors affecting community composition and (b) test for temporal variation in community composition across spatial and environmental gradients. Results In both study years, we found that foliar fungal community composition varied among sites and between regions (east vs. west of the Cascades). We found that climate explained more variation in community composition than geographic distance, although the majority of variation explained by each wasmore »
- Authors:
-
[1];
- Department of Botany and Plant Pathology Oregon State University Corvallis Oregon
- Department of Biology Stanford University Stanford California
- Department of Forest, Rangeland and Fire Sciences University of Idaho Moscow Idaho
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1526770
- Grant/Contract Number:
- 219086; SC0016097
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Journal of biogeography (Print)
- Additional Journal Information:
- Journal Name: Journal of biogeography (Print) Journal Volume: 46 Journal Issue: 9; Journal ID: ISSN 0305-0270
- Publisher:
- Wiley-Blackwell
- Country of Publication:
- United Kingdom
- Language:
- English
Citation Formats
Barge, Edward G., Leopold, Devin R., Peay, Kabir G., Newcombe, George, and Busby, Posy E. Differentiating spatial from environmental effects on foliar fungal communities of Populus trichocarpa. United Kingdom: N. p., 2019.
Web. doi:10.1111/jbi.13641.
Barge, Edward G., Leopold, Devin R., Peay, Kabir G., Newcombe, George, & Busby, Posy E. Differentiating spatial from environmental effects on foliar fungal communities of Populus trichocarpa. United Kingdom. https://doi.org/10.1111/jbi.13641
Barge, Edward G., Leopold, Devin R., Peay, Kabir G., Newcombe, George, and Busby, Posy E. Mon .
"Differentiating spatial from environmental effects on foliar fungal communities of Populus trichocarpa". United Kingdom. https://doi.org/10.1111/jbi.13641.
@article{osti_1526770,
title = {Differentiating spatial from environmental effects on foliar fungal communities of Populus trichocarpa},
author = {Barge, Edward G. and Leopold, Devin R. and Peay, Kabir G. and Newcombe, George and Busby, Posy E.},
abstractNote = {Abstract Aim Foliar fungi – pathogens, endophytes, epiphytes – form taxonomically diverse communities that affect plant health and productivity. The composition of foliar fungal communities is variable at spatial scales both small (e.g. individual plants) and large (e.g. continents), yet few studies have attempted to tease apart spatial from climatic factors influencing these communities. Moreover, few studies have sampled in more than 1 year to gauge interannual variation in community structure. Location The Pacific Northwest of western North America. Taxon Foliar fungi associated with the deciduous tree Populus trichocarpa . Methods In two consecutive years, we used DNA metabarcoding to characterize foliar fungal communities of Populus trichocarpa across its geographic range, which encompasses a sharp climatic transition as it crosses the Cascade Mountain Range. We used multivariate analyses to (a) test for and differentiate spatial and environmental factors affecting community composition and (b) test for temporal variation in community composition across spatial and environmental gradients. Results In both study years, we found that foliar fungal community composition varied among sites and between regions (east vs. west of the Cascades). We found that climate explained more variation in community composition than geographic distance, although the majority of variation explained by each was shared. We also found that interannual variation in community composition depended on environmental context: communities located in the dry, eastern portion of the tree's geographic range varied more between study years than those located in the wet, western portion of the tree's range. Main conclusions Our results suggest that the environment plays a greater role in structuring foliar fungal communities than dispersal limitation.},
doi = {10.1111/jbi.13641},
journal = {Journal of biogeography (Print)},
number = 9,
volume = 46,
place = {United Kingdom},
year = {Mon Jun 17 00:00:00 EDT 2019},
month = {Mon Jun 17 00:00:00 EDT 2019}
}
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