Ultrafast sampling and analysis of plant volatiles by a hand-held miniaturised GC with pre-concentration unit: Kinetic and quantitative aspects of plant volatile production

2002 ◽  
Vol 25 (10-11) ◽  
pp. 677-684 ◽  
Author(s):  
Maritta Kunert ◽  
Anja Biedermann ◽  
Thomas Koch ◽  
Wilhelm Boland
Keyword(s):  
Plant Volatiles ◽  
Plant Volatile ◽  
Volatile Production ◽  
Concentration Unit

scholarly journals α-Terpineol: An Aggregation Pheromone in Optatus palmaris (Coleoptera: Curculionidae) (Pascoe, 1889) Enhanced by Its Host-Plant Volatiles

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2861
Author(s):  
José Manuel Pineda-Ríos ◽  
Juan Cibrián-Tovar ◽  
Luis Martín Hernández-Fuentes ◽  
Rosa María López-Romero ◽  
Lauro Soto-Rojas ◽  
...  
Keyword(s):  
Host Plant ◽  
Aggregation Pheromone ◽  
Plant Volatiles ◽  
Solid Phase ◽  
Control Strategies ◽  
Feeding Habits ◽  
Fold Increase ◽  
Host Plant Volatiles ◽  
Management Scheme ◽  
Volatile Production

The Annonaceae fruits weevil (Optatus palmaris) causes high losses to the soursop production in Mexico. Damage occurs when larvae and adults feed on the fruits; however, there is limited research about control strategies against this pest. However, pheromones provide a high potential management scheme for this curculio. Thus, this research characterized the behavior and volatile production of O. palmaris in response to their feeding habits. Olfactometry assays established preference by weevils to volatiles produced by feeding males and soursop. The behavior observed suggests the presence of an aggregation pheromone and a kairomone. Subsequently, insect volatiles sampled by solid-phase microextraction and dynamic headspace detected a unique compound on feeding males increased especially when feeding. Feeding-starvation experiments showed an averaged fifteen-fold increase in the concentration of a monoterpenoid on males feeding on soursop, and a decrease of the release of this compound males stop feeding. GC-MS analysis of volatiles identified this compound as α-terpineol. Further olfactometry assays using α-terpineol and soursop, demonstrated that this combination is double attractive to Annonaceae weevils than only soursop volatiles. The results showed a complementation effect between α-terpineol and soursop volatiles. Thus, α-terpineol is the aggregation pheromone of O. palmaris, and its concentration is enhanced by host-plant volatiles.

Electroantennogram, behavioural responses, and field trapping of Trypophloeus klimeschi (Coleoptera: Curculionidae: Scolytinae) to eight host volatiles

2019 ◽  
Vol 151 (02) ◽  
pp. 236-250
Author(s):  
Guanqun Gao ◽  
Lulu Dai ◽  
Jing Gao ◽  
Jiaxing Wang ◽  
Hui Chen
Keyword(s):  
Plant Volatiles ◽  
Field Trapping ◽  
Methyl Benzoate ◽  
Management Tool ◽  
Populus Alba ◽  
Host Volatiles ◽  
Behavioural Responses ◽  
Plant Volatile ◽  
Low Concentrations ◽  
Plant Volatile Compounds

AbstractTrypophloeus klimeschiEggers (Coleoptera: Curculionidae: Scolytinae) was first discovered in China in 2003, and it exhibits strong species specificity toPopulus albavar.pyramidalisBunge (Salicaceae). To screen plant volatile compounds for monitoring and trappingT. klimeschi, the electroantennogram responses of adultT. klimeschito eight plant volatiles, including nonanal, 2-methylbutanal, decanal, 2-hydroxybenzaldehyde, (Z)-3-hexen-1-ol benzoate, methyl benzoate, methyl salicylate, and geraniol were tested at various concentrations. Behavioural responses of female and male adults to various concentrations of these eight plant volatiles were also determined using a Y-tube olfactometer. We then tested the effectiveness of these compounds as lures for trappingT. klimeschiin the field. Electroantennogram tests showed thatT. klimeschipossesses olfactory sensitivity for eight compounds. Additionally, walkingT. klimeschiexhibited attraction to low concentrations (≤ 1 μg/μL) of all eight compounds in Y-tube olfactometer. Field experiment results indicated that baits composed of each volatile compound alone were more attractive to greater numbers ofT.klimeschithan the control. The methyl benzoate bait was better attracted byT.klimeschithan other tested volatiles. These results suggest that these compounds could be used in attraction of this stem-boring pest. This study could have important implications for the development of an effective semiochemical-based management tool forT. klimeschiin the field.

scholarly journals The maize lipoxygenase,ZmLOX10, mediates green leaf volatile, jasmonate and herbivore-induced plant volatile production for defense against insect attack

2013 ◽  
Vol 74 (1) ◽  
pp. 59-73 ◽  
Author(s):  
Shawn A. Christensen ◽  
Andriy Nemchenko ◽  
Eli Borrego ◽  
Ian Murray ◽  
Islam S. Sobhy ◽  
...  
Keyword(s):  
Green Leaf ◽  
Green Leaf Volatile ◽  
Plant Volatile ◽  
Volatile Production ◽  
Insect Attack

scholarly journals Analytical method for metabolites involved in biosynthesis of plant volatile compounds

RSC Advances ◽  
2017 ◽  
Vol 7 (31) ◽  
pp. 19363-19372 ◽  
Author(s):  
Xiumin Fu ◽  
Ying Zhou ◽  
Lanting Zeng ◽  
Fang Dong ◽  
Xin Mei ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Analytical Method ◽  
Plant Volatiles ◽  
Plant Volatile ◽  
Plant Volatile Compounds

The progress in the successful techniques used for studying metabolites involved in the metabolic routes of plant volatiles is summarized.

scholarly journals Increased plant volatile production affects oviposition, but not larval development, in the moth Helicoverpa armigera

2011 ◽  
Vol 214 (21) ◽  
pp. 3672-3677 ◽  
Author(s):  
E. J. McCallum ◽  
J. P. Cunningham ◽  
J. Lucker ◽  
M. P. Zalucki ◽  
J. J. De Voss ◽  
...  
Keyword(s):  
Larval Development ◽  
Helicoverpa Armigera ◽  
Plant Volatile ◽  
Helicoverpa Armígera ◽  
Volatile Production

scholarly journals Identification of Bioactive Plant Volatiles for the Carob Moth by Means of GC-EAD and GC-Orbitrap MS

2021 ◽  
Vol 11 (18) ◽  
pp. 8603
Author(s):  
Seyed Ali Hosseini ◽  
Seyed Hossein Goldansaz ◽  
Astrid T. Groot ◽  
Steph B. J. Menken ◽  
Frans Van Der Wielen ◽  
...  
Keyword(s):  
Plant Volatiles ◽  
Chemical Ionization ◽  
Bioactive Compound ◽  
Bioactive Components ◽  
High Confidence ◽  
Minute Amount ◽  
Plant Volatile ◽  
Orbitrap Mass Spectrometry ◽  
Low Levels ◽  
Carob Moth

The aim of this study was to validate a workflow that allows structural identification of plant volatiles that induce a behavioral response in insects. Due to the complexity of plant volatile emissions and the low levels at which these bioactive components tend to occur, gas chromatography-electroantennography (GC-EAD) was applied as the prime differentiator technique, i.e., to indicate particular peaks of interest in the chromatogram. In a next step, the analysis was repeated under identical conditions using GC-Orbitrap mass spectrometry (MS). Combining electron impact (EI) ionization and chemical ionization (CI) with the superior spectral resolution and mass accuracy of the technique enabled straightforward identification of these unknowns, with high confidence in a minute amount of time. Moreover, because of the intrinsic sensitivity of the technique, components that occur at trace amounts but may induce disproportional large behavioral responses are evenly well-identified. We were able to positively identify β-caryophyllene as a bioactive compound in female carob moths. Behavioral attraction was negatively correlated with the amount of β-caryophyllene in host fruits. In an oviposition experiment on filter paper, β-caryophyllene was stimulated in the range of 40–100 ng, while concentrations above 200 ng inhibited oviposition.

scholarly journals Does the Ratio of Compounds in a Plant Volatiles Blend Remain Stable During Transmission by Wind?

2021 ◽  
Author(s):  
Xiaoming Cai ◽  
Yuhang Guo ◽  
Lei Bian ◽  
Zongxiu Luo ◽  
Zhaoqun Li ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Wind Speed ◽  
Wind Tunnel ◽  
Plant Volatiles ◽  
Principal Component ◽  
Odor Source ◽  
Plant Volatile ◽  
Principal Component Analyses ◽  
Odor Plumes ◽  
Volatile Profiles

Abstract For plant volatiles to mediate interactions in tritrophic systems, they must convey accurate and reliable information to insects. However, it is unknown whether the ratio of compounds in plant volatile blends remains stable during wind transmission. In this study, volatiles released from an odor source were collected at different points in a wind tunnel and analyzed. The variation in the amounts of volatiles collected at different points formed a rough cone shape. The amounts of volatiles collected tended to decrease with increasing distance from the odor source. Principal component analyses showed that the volatile profiles were dissimilar among different collection points. The profiles of volatiles collected nearest the odor source were the most similar to the released odor. Higher wind speed resulted in a clearer distinction of the spatial distribution of volatile compounds. Thus, variations in the ratios of compounds in odor plumes exist even during transport over short distances.

scholarly journals EAG Responses of Adult Lobesia botrana Males and Females Collected from Vitis vinifera and Daphne Gnidium to Larval Host-Plant Volatiles and Sex Pheromone

Insects ◽  
2019 ◽  
Vol 10 (9) ◽  
pp. 281 ◽  
Author(s):  
Pérez-Aparicio ◽  
Torres-Vila ◽  
Gemeno
Keyword(s):  
Sex Pheromone ◽  
Vitis Vinifera ◽  
Host Plant ◽  
Plant Volatiles ◽  
Methyl Salicylate ◽  
Host Plants ◽  
Male Response ◽  
Daphne Gnidium ◽  
Plant Volatile ◽  
Larval Host

We analysed electroantennogram (EAG) responses of male and female adults of the European grapevine moth Lobesiabotrana (Denis et Schiffermüller) (Lepidoptera: Tortricidae) collected as larvae from grapevine (Vitis vinifera L.) and flax-leaved daphne (Daphne gnidium L.). The host-plant odorants tested were either V. vinifera-specific [1-octen-3-ol, (E)-β-farnesene, (E)-4,8-dimethyl-1,3,7-nonatriene], D. gnidium-specific (2-ethyl-hexan-1-ol, benzothiazole, linalool-oxide, ethyl benzanoate), or were shared by both host-plants (linalool, methyl salicylate). Sex pheromone compounds were also tested. The male response to the major pheromone component (E7,Z9-12:Ac) was higher than to any other stimuli, whereas the response to the minor pheromone components (E7,Z9-12:OH and Z9-12:Ac) was not different from the response to the plant odorants. The female response to pheromone was lower or not different from that to plant odorants. Methyl salicylate elicited a higher response in females and (E)-β-farnesene elicited a higher response than several other plant odorants in both sexes. Non-significant interactions between host-plant odorant and sex indicated an absence of sex specialization for host-plant volatile detection. The lack of a significant interaction between plant volatiles and larval host-plants suggested that there was no specialization for plant-volatile detection between V. vinifera and D. gnidium individuals.

scholarly journals Foraging behaviour of an egg parasitoid exploiting plant volatiles induced by pentatomids: the role of adaxial and abaxial leaf surfaces

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3326 ◽  
Author(s):  
Francesca Frati ◽  
Antonino Cusumano ◽  
Eric Conti ◽  
Stefano Colazza ◽  
Ezio Peri ◽  
...  
Keyword(s):  
Plant Volatiles ◽  
Egg Parasitoid ◽  
Herbivorous Insect ◽  
Abaxial Surface ◽  
Plant Volatile ◽  
Walking Activity ◽  
Leaf Surfaces ◽  
Insect Attack ◽  
Plant Treatment

Several phases of herbivorous insect attack including feeding and oviposition are known to induce plant defenses. Plants emit volatiles induced by herbivores to recruit insect parasitoids as an indirect defense strategy. So far, volatiles induced by herbivore walking and their putative role in the foraging behavior of egg parasitoids have not been investigated. In this paper we studied the response of the egg parasitoid Trissolcus basalis toward volatiles emitted by Vicia faba plants as consequence of the walking activity of the host Nezara viridula. Olfactometer bioassays were carried out to evaluate wasp responses to plants in which the abaxial or the adaxial surfaces were subjected to walking or/and oviposition. Results showed that host female walking on the abaxial but not on the adaxial surface caused a repellence effect in T. basalis 24 h after plant treatment. The emission of active volatiles also occurred when the leaf was turned upside-down, indicating a specificity of stress localization. This specificity was supported by the results, which showed that oviposition combined with feeding elicit the induction of plant volatiles, attracting the parasitoid, when the attack occurred on the abaxial surface. Analyses of plant volatile blends showed significant differences between the treatments.

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