Defense genes and pathways in Fusarium crown rot susceptible and partially-resistant Australian wheat seedlings responding to Fusarium culmorum infection

Paper

Petrisko, Jill E. and Windes, J. M.. 2008. "Defense genes and pathways in Fusarium crown rot susceptible and partially-resistant Australian wheat seedlings responding to Fusarium culmorum infection." APS 2008 Centennial Meeting. Minneapolis, United States 26 - 28 Jul 2008 American Phytopathological Society.

Paper/Presentation Title	Defense genes and pathways in Fusarium crown rot susceptible and partially-resistant Australian wheat seedlings responding to Fusarium culmorum infection
Presentation Type	Paper
Authors	Petrisko, Jill E. (Author) and Windes, J. M. (Author)
Journal or Proceedings Title	Phytopathology: International Journal of the American Phytopathological Society
Journal Citation	98 (6), pp. S125-S125
Number of Pages	1
Year	2008
Publisher	American Phytopathological Society
ISSN	0031-949X
	1943-7684
Web Address (URL) of Paper	http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO.2008.98.6.S9
Conference/Event	APS 2008 Centennial Meeting
Event Details	APS 2008 Centennial Meeting Event Date 26 to end of 28 Jul 2008 Event Location Minneapolis, United States
Abstract	Fusarium crown rot causes considerable losses to wheat production in parts of the United States and Australia. Australian wheat germplasm has been the best source of resistance to Fusarium crown rot caused by F. pseudograminearum. In order to understand the mechanism of resistance to Fusarium crown rot caused by F. culmorum, a transcriptional study using the Affymetrix wheat chip was done to compare the partially-resistant Australian line '2-49' to the susceptible Australian wheat variety ‘Puseas’ at ten days post-inoculation. Genes determined to be significantly different in expression levels were identified in four categories: 2-49 inoculated versus 2-49 non-inoculated, Puseas inoculated versus Puseas non-inoculated, 2-49 inoculated versus Puseas inoculated and 2-49 non-inoculated versus Puseas non-inoculated. Five candidate genes, oxalate oxidase, chitinase 1, glycosyltransferase, WIR1, and a stress-related protein were selected for further expression characterization at one, five, and ten days post-inoculation using quantitative real-time RT-PCR. The quantitative real-time RT-PCR results confirmed the microarray results and showed that differential expression in these genes was due to differences in genetic background, inoculation response, or the interaction of both factors. These genes are being investigated for their roles in the resistance response of 2-49 using a viral-induced gene silencing (VIGS) study and pathways analysis. An understanding of how 2-49 prevents F. culmorum spread throughout the seedling will greatly improve our understanding of resistance to fungal invasion in wheat.
Keywords	wheat; crown rot
ANZSRC Field of Research 2020	310805. Plant pathology
Public Notes	This is an abstract of a paper presented at the 100th Annual Meeting of the American-Phytopathological-Society Minneapolis, MN, JUL 26-30, 2008, Amer Phytopathol Soc.
Byline Affiliations	Centre for Systems Biology
	University of Idaho, United States

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