Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/3771
Title: Induction of Defence Responses in Roots and Mesocotyls of Sorghum Seedlings by Inoculation with 'Fusarium thapsinum' and 'F. proliferatum', Wounding and Light
Contributor(s): Huang, Liandong (author); Backhouse, David  (author)orcid 
Publication Date: 2005
DOI: 10.1111/j.1439-0434.2005.01013.x
Handle Link: https://hdl.handle.net/1959.11/3771
Abstract: The defence reactions of sorghum seedlings 7 days after inoculation with 'Fusarium thapsinum' and 'F. proliferatum', and interactions with wounding and exposure to light were studied to determine whether responses to these fungi differed from those to abiotic stresses. In non-wounded plants, inoculation with both fungi increased concentrations of anthocyanins and soluble phenolics and activities of peroxidase (POX), chitinase and β-1,3-glucanase in the roots, and increased β-1,3-glucanase activity in the mesocotyls. There was no effect of inoculation on phenylalanine ammonia-lyase (PAL) activity. Wounding by itself increased anthocyanin content of mesocotyls. Wounding also had a variety of interactions with inoculation. Exposure to light had very little effect on any defence response measured. A time course experiment showed that induction of chitinase and β-1,3-glucanase occurred in less than 24 h after inoculation. POX activity increased 2 days after inoculation, followed by a transient increase in PAL activity. The content of anthocyanins and soluble phenolics in roots of inoculated seedlings increased gradually compared with controls over 6 days. The responses of sorghum seedlings to inoculation with 'F. thapsinum' and 'F. proliferatum' were similar to those found by other workers following challenge by necrotrophic pathogens and were different from those induced by wounding and exposure to light.
Publication Type: Journal Article
Source of Publication: Journal of Phytopathology, 153(9), p. 522-529
Publisher: Blackwell Verlag
Place of Publication: Germany
ISSN: 1439-0434
0931-1785
Fields of Research (FoR) 2008: 060704 Plant Pathology
Socio-Economic Objective (SEO) 2008: 820404 Sorghum
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article

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

SCOPUSTM   
Citations

26
checked on Jul 6, 2024

Page view(s)

1,094
checked on Apr 7, 2024

Download(s)

4
checked on Apr 7, 2024
Google Media

Google ScholarTM

Check

Altmetric


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