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- Park, Kye ChungNew Zealand Inst Plant & Food Res Ltd, New Zealand (author)
Olfactory Receptor Neurons for Plant Volatiles and Pheromone Compounds in the Lucerne Weevil, Sitona discoideus
- Article/chapterEnglish2020
Publisher, publication year, extent ...
- 2020-02-12
- Springer,2020
- electronicrdacarrier
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- LIBRIS-ID:oai:DiVA.org:lnu-92856
- https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-92856URI
- https://doi.org/10.1007/s10886-020-01160-yDOI
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- Language:English
- Summary in:English
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- Antennal olfactory receptor neurons (ORNs) for pheromone-related and plant volatile compounds were identified and characterized in the lucerne weevil, Sitona discoideus (Gyllenhal), using the single sensillum recording technique. Our study using five pheromone-related compounds and 42 plant volatile compounds indicates that S. discoideus have highly specialized ORNs for pheromone and plant volatile compounds. Different groups of ORNs present in both males and females of S. discoideus were highly sensitive to 4-methylheptane-3,5-dione (diketone) and four isomers (RR, RS, SR and SS) of 5-hydroxy-4-methylheptan-3-one, respectively. Our results also indicate that male S. discoideus, using the sensory input from antennal ORNs, can distinguish both diketone and the RR-isomer from others, and RS- and SS-isomers from others, although it was unclear if they can distinguish between RS-isomer and SS-isomer, or between diketone and the SR-isomer. It also appeared that female S. discoideus could distinguish between RS-isomer and SS-isomers. The antennae of S. discoideus thus contain sex-specific sets of ORNs for host- and non-host plant volatile compounds. Both sexes of S. discoideus have highly sensitive and selective ORNs for some green-leaf volatiles, such as (Z)-3-hexenol and (E)-2-hexenal. In contrast, male antennae of S. discoideus house three distinct groups of ORNs specialized for myrcene and (E)-beta-ocimene, 2-phenylethanol, and phenylacetaldehyde, respectively, whereas female antennae contain three groups of ORNs specialized for (+/-)-linalool and (+/-)-alpha-terpineol, myrcene and (E)-beta-ocimene, (+/-)-1-octen-3-ol, and 3-octanone. Our results suggest that S. discoideus use a multi-component pheromone communication system, and a sex-specific set of ORNs with a narrow range of response spectra for host-plant location.
Subject headings and genre
- NATURVETENSKAP Biologi Ekologi hsv//swe
- NATURAL SCIENCES Biological Sciences Ecology hsv//eng
- NATURVETENSKAP Kemi hsv//swe
- NATURAL SCIENCES Chemical Sciences hsv//eng
- Host-plant volatiles
- Olfactory sensilla
- Pheromone
- Single-sensillum recording
- 4-methyl-3
- 5-heptanedione
- 5-hydroxy-4-methyl-3-heptanone
- Ecological chemistry
- Ekologisk kemi
Added entries (persons, corporate bodies, meetings, titles ...)
- McNeill, Mark R.AgResearch Ltd, New Zealand (author)
- Suckling, David M.New Zealand Inst Plant & Food Res Ltd, New Zealand;Univ Auckland, New Zealand (author)
- Unelius, C. Rikard,Professor,1958-Linnéuniversitetet,Institutionen för kemi och biomedicin (KOB),New Zealand Inst Plant & Food Res Ltd, New Zealand(Swepub:lnu)nunri (author)
- New Zealand Inst Plant & Food Res Ltd, New ZealandAgResearch Ltd, New Zealand (creator_code:org_t)
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- In:Journal of Chemical Ecology: Springer46, s. 250-2630098-03311573-1561
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