OsHLH61-OsbHLH96 influences rice defense to brown planthopper through regulating the pathogen-related genes

Rice
Meiling WangXuexia Miao

Abstract

In plants, basic helix-loop-helix (bHLH) proteins form the largest transcription factor (TF) family. Among them, HLH proteins are a small group of atypical members that lack the basic domain, and form dimers with bHLH proteins. Although bHLH proteins have been proved to play important roles in plant development and physiology, the function of HLH proteins is rarely studied, not to mention in plant biotic resistance. Brown planthopper (BPH) is a kind of rice-specific insect that causes devastating yield losses each year. In this study, we identified OsHLH61 gene that encodes HLH protein. OsHLH61 gene could be highly induced by BPH infestation. Furthermore, Methyl Jasmonic acid (Me-JA) and cis-12-oxo- phytodienoic acid (OPDA) induced expression of OsHLH61, while SA repressed it. We knocked down expression of OsHLH61 by RNA interference (RNAi), the transgenic plants were susceptible to BPH infestation. RNA-seq analysis revealed that some pathogen-related (PR) genes in the Salicylic acid (SA) signaling pathway that mediate plant immunity were obviously down-regulated in the OsHLH61 RNAi plants. Meanwhile, yeast two-hybrid assay and bimolecular luciferase complementation (BiLC) analysis identified bHLH096 to be an interacting factor...Continue Reading

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Citations

May 17, 2019·Pest Management Science·Yang LingZhang Weilin
Dec 29, 2019·BMC Plant Biology·Laura Medina-PucheRosario Blanco-Portales
Sep 12, 2019·Plants·Hieu Trang NguyenAntony Champion
Mar 12, 2021·Plant Science : an International Journal of Experimental Plant Biology·L Medina-PucheR Blanco-Portales
Jun 3, 2021·International Journal of Molecular Sciences·Yiping ZhangHua Gao

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Methods Mentioned

BETA
transgenic
PCR
two-hybrid
RNA-seq
transfection
transfections
two hybrid
Assay

Software Mentioned

Mega
GraphPad Prizm

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