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28 April 2017 The Role of p38 MAPK, JNK, and ERK in Antibacterial Responses of Chilo suppressalis (Lepidoptera: Crambidae)
Lin Qiu, Boyao Zhang, Lang Liu, Xiaoping Wang, Chaoliang Lei, Yongjun Lin, Jing Zhao, Weihua Ma
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Abstract

The mitogen-activated protein kinases (MAPKs) are conserved signal transduction pathways and broadly responsible for bacterial infection from yeast to mammals, and virus, fungi, and bacteria, specifically Bacillus thuringiensis, to insects. But little is known about the MAPK pathways in antibacterial responses in Chilo suppressalis (Walker), an important lepidopteran pest of rice. In this study, we used the bacteria of Bacillus thuringiensis, Escherichia coli, and Staphyloccocus aureus to infect C. suppressalis larvae, and the responses of MAPK pathways were analyzed. The results showed that E. coli infection induced the up-regulated expression of Csp38 and CsERK1 at 24 h postinfection (pi). Meanwhile, injection of B. thuringiensis and S. aureus resulted in strong activation of CsJNK phosphorylation at 3 h pi. These results suggest that MAPK signaling pathways play important functional roles in antibacterial responses in C. suppressalis larvae.

©The Authors 2017. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com
Lin Qiu, Boyao Zhang, Lang Liu, Xiaoping Wang, Chaoliang Lei, Yongjun Lin, Jing Zhao, and Weihua Ma "The Role of p38 MAPK, JNK, and ERK in Antibacterial Responses of Chilo suppressalis (Lepidoptera: Crambidae)," Journal of Economic Entomology 110(4), 1460-1464, (28 April 2017). https://doi.org/10.1093/jee/tox126
Received: 15 January 2017; Accepted: 6 April 2017; Published: 28 April 2017
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