Journal
CANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE
Volume 83, Issue 4, Pages 356-361Publisher
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/B05-008
Keywords
ecological genetics; fungal endophytes; hidden players; hybridization; Populus; tannins
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Recent studies have shown effects of host plant genetics on community and ecosystem processes, which makes understanding the impacts of genetically based traits on hidden or non-apparent organisms more important. Here we examined links among genetic variation in hybrid cottonwoods, plant phytochemistry, and twig fungal endophytes (i.e., a common hidden organism). We found three major patterns: (1) twig fungal endophyte infection was positively related to the introgression of Fremont cottonwood (Populus fremontii S. Wats.) RFLP genetic markers, (2) condensed tannin concentration in twig bark tissue was negatively correlated to the introgression of Fremont genetic markers, and (3) fungal endophyte infection was negatively related to condensed tannin concentration in twig bark. These data demonstrate that plant genotype can impact hidden ecological players (i.e., fungal endophytes) resulting in community and ecosystem consequences.
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