Skip to Main Content
-
A mutualistic interaction between a fungivorous nematode and a fungus within the endophytic community of Bromus tectorum
Author(s): Melissa A. Baynes; Danelle M. Russell; George Newcombe; Lynn K. Carta; Amy Y. Rossman; Adnan Ismaiel
Date: 2012
Source: Fungal Ecology. 5: 610-623.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
PDF: View PDF (497.03 KB)Description
In its invaded range in western North America, Bromus tectorum (cheatgrass) can host more than 100 sequence-based, operational taxonomic units of endophytic fungi, of which an individual plant hosts a subset. Research suggests that the specific subset is determined by plant genotype, environment, dispersal of locally available endophytes, and mycorrhizal associates. But, interactions among members of the endophyte community could also be important. In a sampling of 63 sites throughout the invaded range of B. tectorum, a fungivorous nematode, Paraphelenchus acontioides, and an endophyte, Fusarium cf. torulosum, were found together in two sites. This positive co-occurrence in the field led to an experimental investigation of their interaction and its effects on relative abundances within the endophyte community. In greenhouse and laboratory experiments, we determined first that P. acontioides preferred F. cf. torulosum to other endophytes, and secondly that the relative abundance of F. cf. torulosum within the endophyte community was increased by the nematode in experimental plants. Taken together our results suggest that the fungivorous P. acontioides uses living plants to cultivate or increase the relative abundance of its preferred fungus. Surprisingly, host plant growth was unaffected by this endophytic, cultivation-based mutualism between a nematode and a fungus.Publication Notes
- You may send email to rmrspubrequest@fs.fed.us to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
Citation
Baynes, Melissa A.; Russell, Danelle M.; Newcombe, George; Carta, Lynn K.; Rossman, Amy Y.; Ismaiel, Adnan. 2012. A mutualistic interaction between a fungivorous nematode and a fungus within the endophytic community of Bromus tectorum. Fungal Ecology. 5: 610-623.Cited
Keywords
cheatgrass, Curvularia inaequalis, fungi, Fusarium cf. torulosum, invasive species, Paraphelenchus acontioides, Penicillium olsonii, preference, suitabilityRelated Search
- Endophytic fungal communities of Bromus tectorum: Mutualisms, community assemblages and implications for invasion
- Treating downy brome with herbicide and seeding with native shrubs
- Fire effects on the mobilization and uptake of nitrogen by cheatgrass (Bromus tectorum L.)
XML: View XML
Show More
Show Fewer
https://www.fs.usda.gov/treesearch/pubs/41590