Re-classification of the causal agent of white grain disorder on wheat as three separate species of Eutiarosporella

Thynne, Elisha and McDonald, Megan C. and Evans, Margaret and Wallwork, Hugh and Neate, Stephen and Solomon, Peter S. (2015) Re-classification of the causal agent of white grain disorder on wheat as three separate species of Eutiarosporella. Australasian Plant Pathology, 44 (5). pp. 527-539. ISSN 0815-3191

Abstract

In the late 1990s, a novel Botryosphaeria-like fungal pathogen was observed causing a disease on wheat in
Queensland, characterised as white grain disorder (WGD).
In recent years, this disease has sporadically appeared across the eastern states of Australia. In this study, internal transcribed spacer (ITS) region sequences were used to compare these fungi to other Botryosphaeriaceae
spp. to show that they should be reclassified as members of the Eutiarosporella genus. Using a small population of WGD isolates, we built a three-loci maximum likelihood tree, using ITS,β-tubulin, and Elongation Factor1-α sequences to show that there are three separate Eutiarosporella
spp. found in infected grain. This multigene tree, with the support of phenotypic differences between clades observed in vitro, show that that the causal agents of WGD should be delimited into three divergent species; Eutiarosporella tritici-australis, Eutiarosporella darliae, and Eutiarosporella pseudodarliae.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Institute for Agriculture and the Environment
Date Deposited: 25 May 2016 04:52
Last Modified: 29 Jul 2016 01:56
Uncontrolled Keywords: Botryosphaeriaceae; Botryosphaeria zeae; phylogeny; Eutiarosporella; white grain
Fields of Research : 07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070308 Crop and Pasture Protection (Pests, Diseases and Weeds)
Socio-Economic Objective: D Environment > 96 Environment > 9604 Control of Pests, Diseases and Exotic Species > 960413 Control of Plant Pests, Diseases and Exotic Species in Farmland, Arable Cropland and Permanent Cropland Environments
Identification Number or DOI: 10.1007/s13313-015-0367-2
URI: http://eprints.usq.edu.au/id/eprint/28431

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