Regulation of rice sucrose transporter 4 gene expression in response to insect herbivore chewing

Journal of plant interactions

article

Yu-An Chang¹  Nai-Chiang Dai¹  Huai-Ju Chen¹  Chien-Hao Tseng¹  Shih-Ting Huang¹  Shu-Jen Wang¹ 

[1] Department of Agronomy, National Taiwan University

关键词: Abscisic acid;    herbivory;    hydrogen peroxide;    jasmonic acid;    mechanical wounding;    sucrose transporter;   

DOI  :  10.1080/17429145.2019.1662099

学科分类：纳米科学和纳米技术

来源: Taylor & Francis

【 摘 要 】

Sucrose is an important carbon source for plant tissue repairing and also a signal involved in defense responses to against insect herbivores. Allocation of sucrose toward to undamaged tissues is an herbivory tolerance mechanism. Sucrose transporters (SUTs) are key factors to control sucrose flow in plants. In this study, herbivory effects caused by rice leaffolder [Cnaphalocrocis medinalis (Guenée)] on OsSUT4 expressions were investigated in rice plants, and the results showed OsSUT4 expression was significantly upregulated by larvae infestation and mechanical wounding. The wounding-induced OsSUT4 expression was not systemically demonstrated in undamaged leaves. The larval chewing-induced OsSUT4 expression was obviously reduced by blocking jasmonic acid (JA) and abscisic acid (ABA) biosynthesis. In addition to JA and ABA, data showed H2O2 generated in wounded tissues also role a signal in the regulatory pathway of herbivore-induced OsSUT4 expressions. Our finding provide insights for further study in signal network of herbivory-induced sucrose translocation.

【 授权许可】

CC BY|CC BY-NC