Attractiveness of Host Plant Volatile Extracts to the Asian Citrus Psyllid, Diaphorina citri, is Reduced by Terpenoids from the Non-Host Cashew

• DOI: 10.1007/s10886-018-0937-1
• Publication Date: 2018-03-02T01:16:28Z
• Authors: Marilene Fancelli; Miguel Borges; Raul A. Laumann; John A. Pickett; Michael A. Birkett; Maria C. Blassiol...
• Keywords: Diaphorina citri; Citrus × sinensis; Olfactometer; Mangifera; Anacardium; Honeydew; Citrus limon

Diaphorina citri is a vector of the bacterial causative agent Huanglongbing (HLB = Citrus greening), severe disease affecting citrus crops. As there no known control for HLB, manipulating insect behaviour through deployment semiochemicals offers promising opportunity protecting The behavioural responses D. to plant volatiles, and identity these volatiles were investigated. Volatiles collected from host plants Murraya paniculata, sinensis, C. reshni, limettioides, Poncirus trifoliata, non-host Psidium guajava, Mangifera indica, Anacardium occidentale. In assays, female spent more time in arms containing either M. paniculata or sinensis compared arms. When was exposed A. occidentale, they preferred arm. emitted other studied did not influence foraging citri. Chemical analyses volatile extracts occidentale revealed presence terpenoids (E)-4,8-dimethylnona-1,3,7–triene (DMNT) (E,E)-4,8,12-trimethyltrideca-1,3,7,11-tetraene (TMTT) higher amounts further bioassays, less synthetic blend DMNT TMTT Female also combination with Results suggest that release two by make this species unattractive citri, could be used reducing colonisation therefore HLB infection.