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1 October 2014 Exogenous Salicylic Acid Enhances the Resistance of Wheat Seedlings to Hessian Fly (Diptera: Cecidomyiidae) Infestation Under Heat Stress
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Abstract

Heat stress exerts significant impact on plant—parasite interactions. Phytohormones, such as salicylic acid (SA), play important roles in plant defense against parasite attacks. Here, we studied the impact of a combination of heat stress and exogenous SA on the resistance of wheat (Triticum aestivum L.) plants to the Hessian fly [Mayetiola destructor (Say) ]. We found that the wheat cultivar ‘Molly’, which contains the resistance gene H13, lost resistance to Hessian fly under heat stress (40°C for 3 and 6 h), and that exogenous application of SA on Molly seedlings right before heat stress can partially prevent the loss of resistance of Molly plants under heat conditions. Our findings have significant implications for understanding the dynamics of plant—insect interactions in the context of heat stress.

© 2014 Entomological Society of America
Joshua Underwood, John Moch, Ming-shun Chen, and Lieceng Zhu "Exogenous Salicylic Acid Enhances the Resistance of Wheat Seedlings to Hessian Fly (Diptera: Cecidomyiidae) Infestation Under Heat Stress," Journal of Economic Entomology 107(5), 2000-2004, (1 October 2014). https://doi.org/10.1603/EC14223
Received: 23 May 2014; Accepted: 1 August 2014; Published: 1 October 2014
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