NDLI: Transgenic wheat expressing a barley class II chitinase gene has enhanced resistance against Fusarium graminearum

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Transgenic wheat expressing a barley class II chitinase gene has enhanced resistance against Fusarium graminearum

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Year: 2008, Volume: 59, Issue: 8

Year: 2007, Volume: 58

Transgenic wheat expressing a barley class II chitinase gene has enhanced resistance against Fusarium graminearum

Content Provider	PubMed Central
Author	Shin, Sanghyun Mackintosh, Caroline A. Lewis, Janet Heinen, Shane J. Radmer, Lorien Ruth, Dill-macky Baldridge, Gerald D. Zeyen, Richard J. Muehlbauer, Gary J.
Copyright Year	2008
Abstract	Fusarium head blight (FHB; scab), primarily caused by Fusarium graminearum, is a devastating disease of wheat worldwide. FHB causes yield reductions and contamination of grains with trichothecene mycotoxins such as deoxynivalenol (DON). The genetic variation in existing wheat germplasm pools for FHB resistance is low and may not provide sufficient resistance to develop cultivars through traditional breeding approaches. Thus, genetic engineering provides an additional approach to enhance FHB resistance. The objectives of this study were to develop transgenic wheat expressing a barley class II chitinase and to test the transgenic lines against F. graminearum infection under greenhouse and field conditions. A barley class II chitinase gene was introduced into the spring wheat cultivar, Bobwhite, by biolistic bombardment. Seven transgenic lines were identified that expressed the chitinase transgene and exhibited enhanced Type II resistance in the greenhouse evaluations. These seven transgenic lines were tested under field conditions for percentage FHB severity, percentage visually scabby kernels (VSK), and DON accumulation. Two lines (C8 and C17) that exhibited high chitinase protein levels also showed reduced FHB severity and VSK compared to Bobwhite. One of the lines (C8) also exhibited reduced DON concentration compared with Bobwhite. These results showed that transgenic wheat expressing a barley class II chitinase exhibited enhanced resistance against F. graminearum in greenhouse and field conditions.
Related Links	http://dx.doi.org/10.1093/jxb/ern103
Ending Page	2378
Page Count	8
Starting Page	2371
File Format	PDF
ISSN	00220957
e-ISSN	14602431
Journal	Journal of Experimental Botany
Issue Number	9
Volume Number	59
Language	English
Publisher	Oxford University Press
Publisher Date	2008-06-01
Access Restriction	Open
Rights Holder	Oxford University Press
Subject Keyword	Plant Science Physiology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science

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