Roles of (Z)-3-hexenol in plant-insect interactions

Wei, Jianing; Kang, Le

doi:10.4161/psb.6.3.14452

Cited by 89 publications

(65 citation statements)

References 28 publications

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“…In general, airborne organic compounds enter into plant cells, providing substrates for metabolism, and metabolized compounds may lead to responses in the receiver plants. Besides, several reports have already shown that exogenous application of plant volatiles such as (Z)‐3‐hexanol can influence herbivore performance and behaviour (B. Wang, Zhou, Xin, Ji, & Lou, ; Wei & Kang, ).…”

Section: Discussionmentioning

confidence: 99%

Glucosylation of (Z)‐3‐hexenol informs intraspecies interactions in plants: A case study in Camellia sinensis

Jing

Zhang

Gao

et al. 2018

Plant Cell & Environment

121

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Plants emit a variety of volatiles in response to herbivore attack, and (Z)‐3‐hexenol and its glycosides have been shown to function as defence compounds. Although the ability to incorporate and convert (Z)‐3‐hexenol to glycosides is widely conserved in plants, the enzymes responsible for the glycosylation of (Z)‐3‐hexenol remained unknown until today. In this study, uridine‐diphosphate‐dependent glycosyltransferase (UGT) candidate genes were selected by correlation analysis and their response to airborne (Z)‐3‐hexenol, which has been shown to be taken up by the tea plant. The allelic proteins UGT85A53‐1 and UGT85A53‐2 showed the highest activity towards (Z)‐3‐hexenol and are distinct from UGT85A53‐3, which displayed a similar catalytic efficiency for (Z)‐3‐hexenol and nerol. A single amino acid exchange E59D enhanced the activity towards (Z)‐3‐hexenol, whereas a L445M mutation reduced the catalytic activity towards all substrates tested. Transient overexpression of CsUGT85A53‐1 in tobacco significantly increased the level of (Z)‐3‐hexenyl glucoside. The functional characterization of CsUGT85A53 as a (Z)‐3‐hexenol UGT not only provides the foundation for the biotechnological production of (Z)‐3‐hexenyl glucoside but also delivers insights for the development of novel insect pest control strategies in tea plant and might be generally applicable to other plants.

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Section: Discussionmentioning

confidence: 99%

Glucosylation of (Z)‐3‐hexenol informs intraspecies interactions in plants: A case study in Camellia sinensis

Jing

Zhang

Gao

et al. 2018

Plant Cell & Environment

121

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“…Among the 12 electrophysiologically active compounds from the host and non-host plants tested, female beetles were attracted to DMNT and repelled by (Z)-3-hexenol in comparison to solvent controls in dose-response bioassays conducted in laboratory Y-tube choice experiments. These two olfactory cues are the most ubiquitous chemicals present in the volatile bouquets of many plant species studies (Hatanaka 1993;Hoballah, Tamo & Turlings 2002;Wei et al 2007;Kappers et al 2010;Wei & Kang 2011;Karban et al 2014). For instance, under undamaged conditions, 30% of investigated plants, such as kidney bean (Phaseolus vulgaris), bell pepper (Capsicum annuum) and cucumber (C. sativus), release DMNT in small amounts, whereas upon mechanical damages or insect damages, 70% of plants studied, from Fabaceae, Solanaceae, Cucurbitaceae, Apiaceae, Asteraceae, Rosaceae and Vitaceae families, release this compound in higher concentrations (Wei et al 2007).…”

Section: Discussionmentioning

confidence: 99%

Manipulating two olfactory cues causes a biological control beetle to shift to non‐target plant species

et al. 2017

Journal of Ecology

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1. Olfactory cues can determine the host preferences of herbivorous insects, but their role in host shifting is unclear. Host specificity and the potential for host shifts are important criteria for screening and post-release evaluation of biological control agents for invasive plants. However, the role of olfactory cues in mediating host shifts in biological control agents is not well understood. 2. To investigate the role of olfactory cues in host selection of a reportedly monophagous flea beetle (Agasicles hygrophila), an important biocontrol agent for invasive alligator weed (Alternanthera philoxeroides), we extracted and analyzed the volatiles produced by the host plant A. philoxeroides and the non-host plants A. sessilis, Beta vulgaris, and Amaranthus Accepted Article This article is protected by copyright. All rights reserved. mangostanus. Moreover, we used electrophysiologcial techniques, behavioural bioassays and field trials to test the antennal responses and behavioural preferences of A. hygrophila to combinations of different plant volatiles and treatments, and pure compounds in different dosages and combinations. 3. We show that A. hygrophila female beetles indeed use olfactory cues to select plants for feeding and oviposition and that the survivorship of larvae on the second preferred non-host plant A. sessilis, a close relative of the first preferred host plant A. philoxeroides, was over 75% in a field trail. Although female beetles responded to many volatile compounds from host and non-host plants, (E)-4,8-dimethyl-1,3,7- nonatriene (DMNT) positively encouraged the beetle’s feeding and oviposition preferences, whereas (Z)-3-hexenol displayed repellent effect. Remarkably, complementation assays with (Z)-3-hexenol on host plant or DMNT on non-host plants significantly shifted A. hygrophila host preferences to non-host plants and resulted in oviposition and egg hatching on the non-host plant A. sessilis in field trials. 4. Synthesis. We demonstrate an olfactory mechanism by which a specialized herbivorous beetle uses the ratio of two common plant volatiles, DMNT and (Z)-3-hexenol, to discriminate between its host and non-host plants in nature. This study highlights an important mechanism by which olfactory cues could lead to undesired host range expansion in biocontrol agent, thus representing an important warning of the potential for a host shift and development of invasiveness in a common biocontrol agent, the flea beetle

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“…2007), as well as mediating plant–plant communication (Engelberth et al . 2004; Wei & Kang 2011). Plant volatiles can be released constitutively or after herbivore damage (Pare & Tumlinson 1997); they can vary with plant species and genotype, and with abiotic conditions such as nutrients or light (Gouinguene & Turlings 2002; Hoballah, Turlings & Tamo 2002).…”

Section: Introductionmentioning

confidence: 99%

Antagonism between herbivore‐induced plant volatiles and trichomes affects tritrophic interactions

Wei

Yan

Ren

et al. 2012

Plant Cell & Environment

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We used tomato genotypes deficient in the jasmonic acid (JA) pathway to study the interaction between the production of herbivore-induced plant volatiles (HIPVs) that serve as information cues for herbivores as well as natural enemies of herbivores, and the production of foliar trichomes as defence barriers. We found that jasmonic acidinsensitive1 (jai1) mutant plants with both reduced HIPVs and trichome production received higher oviposition of adult leafminers, which were more likely to be parasitized by the leafminer parasitoids than JA biosynthesis spr2 mutant plants deficient in HIPVs but not trichomes. We also showed that the preference and acceptance of leafminers and parasitoids to trichome-removed plants from either spr2 or wild-type (WT) genotypes over trichome-intact genotypes can be ascribed to the reduced trichomes on treated plants, but not to altered direct and indirect defence traits such as JA, proteinase inhibitor (PI)-II and HIPVs levels. Although the HIPVs of WT plants were more attractive to adult insects, the insects preferred trichome-free jai1 plants for oviposition and also had greater reproductive success on these plants. Our results provide strong evidence that antagonism between HIPV emission and trichome production affects tritrophic interactions. The interactions among defence traits are discussed.

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Roles of (Z)-3-hexenol in plant-insect interactions

Cited by 89 publications

References 28 publications

Glucosylation of (Z)‐3‐hexenol informs intraspecies interactions in plants: A case study in Camellia sinensis

Glucosylation of (Z)‐3‐hexenol informs intraspecies interactions in plants: A case study in Camellia sinensis

Manipulating two olfactory cues causes a biological control beetle to shift to non‐target plant species

Antagonism between herbivore‐induced plant volatiles and trichomes affects tritrophic interactions

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