Suppression of a leucine‐rich repeat receptor‐like kinase enhances host plant resistance to a specialist herbivore

Ye, Meng; Kuai, Peng; Hu, Lingfei; Ye, Miaofen; Sun, Hao; Erb, Matthias; Lou, Yonggen (2020). Suppression of a leucine‐rich repeat receptor‐like kinase enhances host plant resistance to a specialist herbivore. Plant, cell & environment, 43(10), pp. 2571-2585. Wiley 10.1111/pce.13834

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The mechanisms by which herbivores induce plant defenses are well studied. However, how specialized herbivores suppress plant resistance is still poorly understood. Here, we discovered a rice (Oryza sativa ) leucine‐rich repeat receptor‐like kinase, OsLRR‐RLK2 , which is induced upon attack by gravid females of a specialist piercing‐sucking herbivore, the brown planthopper (BPH, Nilaparvata lugens ). Silencing OsLRR‐RLK2 decreases the constitutive activity of mitogen‐activated protein kinase (OsMPK6) and alters BPH‐induced transcript levels of several defense‐related WRKY transcription factors. Moreover, silencing OsLRR‐RLK2 reduces BPH‐induction of jasmonic acid and ethylene but promotes the biosynthesis of both elicited salicylic acid and H2O2; silencing also enhances the production of volatiles emitted from rice plants infested with gravid BPH females. These changes decrease BPH preference and performance in the glasshouse and the field. These findings suggest that OsLRR‐RLK2, by regulating the plant's defense‐related signaling profile, increases the susceptibility of rice to BPH, and that BPH infestation influences the expression of OsLRR‐RLK2, suppressing the resistance of rice to BPH.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Biotic Interactions

UniBE Contributor:

Ye, Meng; Hu, Lingfei and Erb, Matthias

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

0140-7791

Publisher:

Wiley

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

04 Aug 2020 11:02

Last Modified:

22 Sep 2020 01:32

Publisher DOI:

10.1111/pce.13834

PubMed ID:

32598036

Uncontrolled Keywords:

ethylene; H2O2; jasmonic acid; mitogen-activated protein kinase; Nilaparvata lugens; rice; salicylic acid; transcription factor

BORIS DOI:

10.7892/boris.145556

URI:

https://boris.unibe.ch/id/eprint/145556

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