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Evidence of the Involvement of a Plus-C Odorant-Binding Protein HparOBP14 in Host Plant Selection and Oviposition of the Scarab Beetle Holotrichia parallela
- Source :
- Insects, Vol 12, Iss 430, p 430 (2021), Insects, Volume 12, Issue 5
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- Holotrichia parallela is one of the agriculturally important scarab beetle pests in China. In this study, HparOBP14 was cloned, which is the most abundantly expressed among the OBP genes in the legs of female H. parallela adults. Sequence comparison and phylogenetic analysis showed that HparOBP14 has a Plus-C structure motif. The expression profile analysis revealed that HparOBP14 expression was the highest in the female antennae and then in the legs. The fluorescence competitive binding experiment of the recombinant HparOBP14 protein showed that HparOBP14 had an affinity with 6-methyl-5-heptene-2-one (plant volatile), 3-methylindole, p-cymene, methanol, formaldehyde, α-pinene, and geraniol (organic fertilizer volatile). Knockdown HparOBP14 expression decreased significantly the EAG response of the injected female adults to p-cymene, methanol, formaldehyde, α-pinene, and geraniol. Similarly, the injected female adults were significantly less attracted to geraniol and methanol. Therefore, HparOBP14 might bind organic matter volatiles during oviposition. These results are not only helpful to analyze the olfactory recognition mechanism of female adult H. parallela when choosing suitable oviposition sites, but also to provide target genes for green prevention and control of H. parallela in the future.
- Subjects :
- Holotrichia parallela
Gene knockdown
biology
Science
odorant-binding protein
scarab beetle
EAG recording
law.invention
chemistry.chemical_compound
RNA interference
behavior response
Biochemistry
chemistry
law
Insect Science
fluorescence competitive binding
Sequence comparison
Odorant-binding protein
biology.protein
Recombinant DNA
Gene
Geraniol
Subjects
Details
- Language :
- English
- ISSN :
- 20754450
- Volume :
- 12
- Issue :
- 430
- Database :
- OpenAIRE
- Journal :
- Insects
- Accession number :
- edsair.doi.dedup.....6cab978e9cc080040d08a8fb3358f8ff