Please use this identifier to cite or link to this item:
Title: Comparison of fungal endophyte communities in the invasive panicoid grass 'Hyparrhenia hirta' and the native grass 'Bothriochloa macra'
Contributor(s): White, Ian Robert (author); Backhouse, David (author)orcid 
Publication Date: 2007
DOI: 10.1071/BT06125
Handle Link:
Abstract: Communities of fungal endophytes from roots, stems and leaves of the introduced grass 'Hyparrhenia hirta' (Coolatai grass) and the native species 'Bothriochloa macra' (redgrass) were compared at two sites to identify characteristics that may be associated with invasiveness of 'H. hirta'. The most frequently isolated fungi from both hosts were species of 'Nigrospora', 'Alternaria', 'Cladosporium', 'Phoma', 'Epicoccum', 'Fusarium' and 'Periconia'. Most of these occurred at a similar frequency in the two hosts, although Nigrospora sphaerica was much more frequently isolated from 'H. hirta' at both sites. There was little support for the hypothesis that the introduced species ('H. hirta') would have a less diverse endophyte community than the native species. There was a greater degree of dominance by the most frequent species in communities from 'H. hirta' than from 'B. macra', leading to lower diversity indices, but no significant difference in species richness. Cluster analysis of the endophyte communities suggested that host had a greater influence than site on community structure, and that this was expressed mostly in the relative frequency of fungi isolated from stems and leaves, with very similar fungal communities present in the roots of both species at both sites. Analysis of co-occurrence showed no evidence that competition among fungi affected community structure within individual plants. The dominance of 'N. sphaerica' in 'H. hirta' was therefore due to fungus–plant interactions rather than fungus–fungus interactions. Interactions with 'N. sphaerica' could potentially affect the population ecology of 'H. hirta'.
Publication Type: Journal Article
Source of Publication: Australian Journal of Botany, 55(2), p. 178-185
Publisher: CSIRO Publishing
Place of Publication: Melbourne, Australia
ISSN: 0067-1924
Field of Research (FOR): 070308 Crop and Pasture Protection (Pests, Diseases and Weeds)
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Other Links:
Statistics to Oct 2018: Visitors: 388
Views: 390
Downloads: 0
Appears in Collections:Journal Article

Files in This Item:
2 files
File Description SizeFormat 
Show full item record


checked on Nov 26, 2018

Page view(s)

checked on Mar 3, 2019
Google Media

Google ScholarTM





Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.