| Title: | Stemborer-induced rice plant volatiles boost direct and indirect resistance in neighboring plants |
| Author(s): | Yao C; Du L; Liu Q; Hu X; Ye W; Turlings TCJ; Li Y; |
| Address: | "State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China. College of Life Sciences, Xinyang Normal University, Xinyang, 464000, China. Laboratory of Fundamental and Applied Research in Chemical Ecology, University of Neuchatel, Neuchatel, 2000, Switzerland" |
| ISSN/ISBN: | 1469-8137 (Electronic) 0028-646X (Linking) |
| Abstract: | "Herbivore-induced plant volatiles (HIPVs) are known to be perceived by neighboring plants, resulting in induction or priming of chemical defenses. There is little information on the defense responses that are triggered by these plant-plant interactions, and the phenomenon has rarely been studied in rice. Using chemical and molecular analyses in combination with insect behavioral and performance experiments, we studied how volatiles emitted by rice plants infested by the striped stemborer (SSB) Chilo suppressalis affect defenses against this pest in conspecific plants. Compared with rice plants exposed to the volatiles from uninfested plants, plants exposed to SSB-induced volatiles showed enhanced direct and indirect resistance to SSB. When subjected to caterpillar damage, the HIPV-exposed plants showed increased expression of jasmonic acid (JA) signaling genes, resulting in JA accumulation and higher levels of defensive proteinase inhibitors. Moreover, plants exposed to SSB-induced volatiles emitted larger amounts of inducible volatiles and were more attractive to the parasitoid Cotesia chilonis. By unraveling the factors involved in HIPV-mediated defense priming in rice, we reveal a key defensive role for proteinase inhibitors. These findings pave the way for novel rice management strategies to enhance the plant's resistance to one of its most devastating pests" |
| Keywords: | Animals *Oryza/genetics Plants/metabolism *Moths Insecta/metabolism Herbivory Peptide Hydrolases/metabolism *Volatile Organic Compounds/metabolism Cyclopentanes/metabolism Chilo suppressalis Cotesia chilonis defense priming herbivore-induced plant volatil; |
| Notes: | "MedlineYao, Chengcheng Du, Lixiao Liu, Qingsong Hu, Xiaoyun Ye, Wenfeng Turlings, Ted C J Li, Yunhe eng Research Support, Non-U.S. Gov't England 2022/10/20 New Phytol. 2023 Mar; 237(6):2375-2387. doi: 10.1111/nph.18548. Epub 2022 Nov 23" |
