Monoterpenoid signals and their transcriptional responses to feeding and juvenile hormone regulation in bark beetle Ips hauser i
| Autor: | Pengjuan Zu, Hui Cong Du, Zhen Zhang, Xia Shi, Su Fang Zhang, Fu Liu, Xiang Bo Kong, Jia Xing Fang |
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| Rok vydání: | 2021 |
| Předmět: |
Male
0106 biological sciences Bark beetle Physiology media_common.quotation_subject Population Zoology Aquatic Science 01 natural sciences Pheromones Transcriptome 03 medical and health sciences Animals education Molecular Biology Ecosystem Ecology Evolution Behavior and Systematics 030304 developmental biology media_common 0303 health sciences education.field_of_study biology Hindgut biology.organism_classification Coleoptera Juvenile Hormones 010602 entomology Insect Science Juvenile hormone Monoterpenes Plant Bark Pheromone Female Animal Science and Zoology PEST analysis Reproduction |
| Zdroj: | Journal of Experimental Biology. 224 |
| ISSN: | 1477-9145 0022-0949 |
| DOI: | 10.1242/jeb.238030 |
| Popis: | Hauser's engraver beetle, Ips hauseri, is a serious pest in spruce forest ecosystems in Central Asia. Its monoterpenoid signal production, transcriptome responses and potential regulatory mechanisms remain poorly understood. The quality and quantity of volatile metabolites in hindgut extracts of I. hauseri were found to differ between males and females and among three groups: beetles that were newly emerged, those with a topical application of juvenile hormone III (JHIII) and those that had been feeding for 24 h. Feeding males definitively dominated monoterpenoid signal production in I. hauseri, which uses (4S)-(−)-ipsenol and (S)-(−)-cis-verbenol to implement reproductive segregation from Ipstypographus and Ipsshangrila. Feeding stimulation induced higher expression of most genes related to the biosynthesis of (4S)-(−)-ipsenol than JHIII induction, and showed a male-specific mode in I. hauseri. JHIII stimulated males to produce large amounts of (−)-verbenone and also upregulated the expression of several CYP6 genes, to a greater extent in males than in females. The expression of genes involved in the metabolism of JHIII in females and males was also found to be upregulated. Our results indicate that a species-specific aggregation pheromone system for I. hauseri, consisting of (4S)-(−)-ipsenol and S-(−)-cis-verbenol, can be used to monitor population dynamics or mass trap killing. Our results also enable a better understanding of the bottom-up role of feeding behaviors in mediating population reproduction/aggregation and interspecific interactions. |
| Databáze: | OpenAIRE |
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