Wheat Mds-1 encodes a heat-shock protein and governs susceptibility towards the Hessian fly gall midge

Xuming Liu, Chitvan Khajuria, Jiarui Li, Harold N. Trick, Li Huang, Bikram S. Gill, Gerald R. Reeck, Ginny Antony, Frank F. White and Ming-Shun Chen ()
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Xuming Liu: Kansas State University
Chitvan Khajuria: Kansas State University
Jiarui Li: Kansas State University
Harold N. Trick: Kansas State University
Li Huang: Montana State University
Bikram S. Gill: Kansas State University
Gerald R. Reeck: Kansas State University
Ginny Antony: Kansas State University
Frank F. White: Kansas State University
Ming-Shun Chen: Kansas State University

Nature Communications, 2013, vol. 4, issue 1, 1-9

Abstract: Abstract Gall midges induce formation of host nutritive cells and alter plant metabolism to utilize host resources. Here we show that the gene Mayetiola destructor susceptibility-1 on wheat chromosome 3AS encodes a small heat-shock protein and is a major susceptibility gene for infestation of wheat by the gall midge M. destructor, commonly known as the Hessian fly. Transcription of Mayetiola destructor susceptibility-1 and its homoeologs increases upon insect infestation. Ectopic expression of Mayetiola destructor susceptibility-1 or induction by heat shock suppresses resistance of wheat mediated by the resistance gene H13 to Hessian fly. Silencing of Mayetiola destructor susceptibility-1 by RNA interference confers immunity to all Hessian fly biotypes on normally susceptible wheat genotypes. Mayetiola destructor susceptibility-1-silenced plants also show reduced lesion formation due to infection by the powdery mildew fungus Blumeria graminis f. sp. tritici. Modification of susceptibility genes may provide broad and durable sources of resistance to Hessian fly, B. graminis f. sp. tritici, and other pests.

Date: 2013
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DOI: 10.1038/ncomms3070

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