Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/91063
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: Fungal growth, proteinaceous toxins and virulence of Pyrenophora teres f. teres on barley
Author: Ismail, I.
Godfrey, D.
Able, A.
Citation: Australasian Plant Pathology, 2014; 43(5):535-546
Publisher: Springer
Issue Date: 2014
ISSN: 0815-3191
1448-6032
Statement of
Responsibility: 
I.A. Ismail, D. Godfrey, A.J. Able
Abstract: Pyrenophora teres f. teres (Ptt) causes net form net blotch (NFNB), an important disease of barley, but isolates of Ptt vary in their ability to cause symptoms on susceptible cultivars. Ptt isolates with different virulence were used to compare conidialgermination and fungal growth on the barley cultivar ‘Sloop'. Whether proteinaceous toxins from culture filtrates of the six isolates or different fractions and sub-fractions of those filtrates induced different symptoms was also investigated. Greater conidial germination and appressorial formation was observed during infection by more virulent isolates but hyphal length was variable. Even though the six isolates varied in virulence from low to high, the proteinaceous toxins extracted from culture filtrates of all isolates were able to induce necrosis when injected into barley leaves. Ptt isolates therefore appear genetically able to produce proteinaceous toxins and the difference in virulence between isolates may reflect the growth of the fungus and the capacity for toxins to be delivered to the plant tissue. Proteins identified in the biologically active fractions included glycoside hydrolase, cysteine hydrolase, CFEM (common in fungal extracellular membrane) domain-containing protein, lactonase and peptidase. These have been previously suggested to have roles in plant cell wall degradation, fungal growth and/or host-pathogen interactions.
Keywords: Barley net blotch; net form net blotch; virulence; proteinaceous toxins; fungal growth
Rights: © Australasian Plant Pathology Society Inc. 2014
RMID: 0030008695
DOI: 10.1007/s13313-014-0295-6
Appears in Collections:Agriculture, Food and Wine publications

Files in This Item:
There are no files associated with this item.


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