CSIRO Publishing Books Journals About Us Shopping Cart You are here: Journals > Australasian Plant Pathology   
Australasian Plant Pathology
  Research in all branches of plant pathology
 
Search
 
 
  Advanced Search
   

Journal Home
About the Journal
Content
Current Issue
Just Accepted
All Issues
Special Issues

 Australasian Plant Disease Notes
Disease notes, new records and quarantine interception reports are published in Australasian Plant Disease Notes.

 

Article << Previous     |     Next >>   Contents Vol 34(1)

Cylindrocarpon didymum — a root pathogen of subterranean clover in the lower south-west of Western Australia

M. J. Barbetti

School of Plant Biology, Faculty of Natural and Agricultural Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia. Email: mbarbett@cyllene.uwa.edu.au
 
 Full Text
 PDF (90 KB)
 Export Citation
 Print
  


Abstract

The pathogenicity of Cylindrocarpon didymum towards roots of subterranean clover (Trifolium subterraneum) at four inoculum rates (0.5, 1.0, 2.0, 5.0% w/w) under three temperature regimes (15/10, 18/13, 21/16°C) and the ability of C. didymum to produce the mycotoxin brefeldin A in vitro was determined. C. didymum infected and damaged tap and lateral roots of subterranean clover and reduced plant dry weights, particularly when sufficiently high levels of inoculum were present. Most disease occurred at the cooler temperature regime of 15/10°C, a temperature regime that would closely approximate field soil temperatures in the lower south-west of Western Australia during the winter months. C. didymum produced brefeldin A in vitro and the frequently observed, stunted appearance of affected tap and lateral roots was possibly as a consequence of production of brefeldin A in the root tissue by this pathogen. This is the first published report of C. didymum as a root pathogen of subterranean clover.

   
    


 
Top  Email this page
 
Legal & Privacy | Contact Us | Help

CSIRO

© CSIRO 1996-2012