| Title: | Virus-induced plant volatiles mediate the olfactory behaviour of its insect vectors |
| Author(s): | Chang X; Wang F; Fang Q; Chen F; Yao H; Gatehouse AMR; Ye G; |
| Address: | "State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China. College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China. School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK" |
| ISSN/ISBN: | 1365-3040 (Electronic) 0140-7791 (Linking) |
| Abstract: | "Plant viruses can manipulate their hosts to release odours that are attractive or repellent to their insect vectors. However, the volatile organic compounds (VOCs), either individually or as mixtures, which play a key role in the olfactory behaviour of insect vectors remains largely unknown. Our study focused on green rice leafhoppers (GRLHs) vectoring rice dwarf virus (RDV) revealed that RDV infection significantly induced the emission of (E)-beta-caryophyllene and 2-heptanol by rice plants, which influenced the olfactory behaviour of both non-viruliferous and viruliferous GRLHs. (E)-beta-caryophyllene attracted non-viruliferous GRLHs to settle on RDV-infected plants, but neither attracted nor repelled viruliferous GRLHs. In contrast, 2-heptanol repelled viruliferous GRLHs to settle on RDV-infected plants, but neither repelled nor attracted non-viruliferous GRLHs. Suppression of (E)-beta-caryophyllene synthase OsCAS via CRISPR-Cas9 to generate oscas-1 plants enabled us to confirm the important role played by (E)-beta-caryophyllene in modulating the virus-vector-host plant interaction. These novel results reveal the role of these virus-induced VOCs in modulating the behaviour of its GRLH insect vector and may facilitate the design of new strategies for disease control through manipulation of plant volatile emissions" |
| Keywords: | "Animals Behavior, Animal/drug effects/physiology Enzymes/genetics/metabolism Gene Expression Regulation, Plant Hemiptera/*drug effects/physiology Heptanol/metabolism/pharmacology Host-Pathogen Interactions/*physiology Insect Repellents/metabolism/pharmaco;" |
| Notes: | "MedlineChang, Xuefei Wang, Fang Fang, Qi Chen, Fei Yao, Hongwei Gatehouse, Angharad M R Ye, Gongyin eng Research Support, Non-U.S. Gov't 2021/04/19 Plant Cell Environ. 2021 Aug; 44(8):2700-2715. doi: 10.1111/pce.14069. Epub 2021 May 5" |
