Sensing the Danger Signals: cis-Jasmone Reduces Aphid Performance on Potato and Modulates the Magnitude of Released Volatiles

Abstract

In response to herbivory, plants synthesize and release variable mixtures of herbivore-induced plant volatiles (HIPVs) as indirect defense traits. Such induction of indirect plant defense can also be "switched on" by certain chemicals known as priming agents. Preceding work showed that the plant HIPV cis-jasmone (CJ) induced the emission of aphid defense-related volatiles affecting their behavioral response. However, little is known about the extent to which CJ-induced volatiles impacts aphid performance. In the current study, we conducted growth assays of potato aphids, Macrosiphum euphorbiae, observing their reproduction, development, and survival on CJ-primed potato plants. Adult M. euphoribae produced fewer neonates on CJ-treated plants compared to untreated plants. The weight and survival of M. euphorbiae reproduced neonates were significantly lower on CJ-treated plants. Additionally, there was a significant reduction in mean relative growth rate (MRGR) of M. euphoribae nymphs that fed on CJ-treated plants. Furthermore, the intrinsic rate of population increase (r m) of M. euphoribae was significantly reduced on CJ-treated plants. Volatile analysis showed that CJ treatment significantly increased the emission of differently assigned volatile groups that have functional or biosynthetic characteristics, i.e., alcohols, benzenoids, homoterpenes, ketones, and sesquiterpenes at all sampling periods. Such enhanced volatile emissions were persistent over 7 days, suggesting a long-lasting effect of CJ defense priming. A negative correlation was found between volatile emission and MRGR of M. euphoribae. Principal component analysis (PCA) of data for the volatiles showed that (Z)-3-hexen-1-ol, α-pinene, (E)-ocimene, (E)-4,8-dimethyl-1,3,7-nonatriene (DMNT), cis-jasmone, indole, and (E,E)-4,8,12-trimethyl-1,3,7,11-tridecatetraene (TMTT) were the main volatiles contributing to the emitted blends, suggesting possible involvement in the reduced performance of M. euphorbiae. Overall, our findings demonstrate that priming potato with CJ significantly results in elevated emission of known biologically active volatiles, which may negatively impact aphid settling and other performance traits on primed plants.

Helicoverpa armigera herbivory negatively impacts Aphis gossypii populations via inducible metabolic changes

“…A previous study has also shown that changes in the JA signaling pathway are associated with the inhibition of A. gossypii populations after caterpillar feeding 10 . Moreover, cis ‐jasmone induces plant resistance and inhibitory effects against aphid populations in the field 42–44 …”

“…10 Moreover, cisjasmone induces plant resistance and inhibitory effects against aphid populations in the field. [42][43][44] JAZ proteins interact with the JA signaling pathway and help plants respond to biological stress. [45][46][47][48] We found that several genes were in the JAZ protein synthesis were significantly increased, and that JA was significantly more abundant in plants fed upon by H. armigera than in those suffering from mechanical damage alone (Fig.…”

The Endophyte Trichoderma asperellum M2RT4 Induces the Systemic Release of Methyl Salicylate and (Z)-jasmone in Tomato Plant Affecting Host Location and Herbivory of Tuta absoluta

“…Apart from T. absoluta larvae, previous studies have shown the efficacy of ( Z )-jasmone against immature stages of other insect pests. For instance, Sobhy et al (2020) reported that priming potato plant with ( Z )-jasmone negatively impacts the performance traits of aphids Macrosiphum euphorbiae (Thomas) (Hemiptera: Aphididae). Similarly, Black et al (2003) reported the inhibitory effect of JA and this can be used as a vaccine against the leafminers (Diptera: Agromyzidae).…”

Fruit and seed variation of wild nutmeg (Myristica schefferi Warb.) in South Aceh, Indonesia

“…This compound can be found in Polygonum hydropiper [18], Satureja hortensis [19]. Jasmon has biological activity and can be used to decrease aphid growth and reproduction [20]. Meanwhile, austrobailignan has the potential for anticancer [21].…”