Genome-Wide Identification And Expression Profiling O.f Odorant-Binding Proteins In T he Oriental Fruit Fly, Bactrocera Dorsalis
文献类型: 外文期刊
作者: Zhang Ying Xin;Wei Dong;Wang Jinjun;Jiang, Hong:Bo;Chen,xiaofeng;Li,xu
作者机构:
关键词: Bactrocera dorsalis; OBP; Genome annotation; Antenna; Olfaction
期刊名称: COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS
ISSN: 1744-117X
年卷期: 2019 年 31 卷
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摘要: Olfaction contributes to many crucial behaviors in insects, such as foraging, locating hosts, mating, and avoiding predators. In the first step of the olfaction process in insects, odorant-binding proteins (OBPs) bind with the odorants and transport hydrophobic odorants. OBPs are also believed to accelerate the termination of the odorant response. The oriental fruit fly, Bactrocera dorsalis, is one of the most destructive fruit-eating pests, causing enormous economic losses to the fruit and vegetable industry worldwide. However, information relating to the number, diversity, and expression patterns of OBPs still remains fragmented in this insect pest. Here, we attempted to identify the OBPs in B. dorsalis using genomic and transcriptomic information. In this study, we expanded the repository of B. dorsalis OBPs to 49. Phylogenetic analysis of BdorOBPs with other species revealed that these proteins grouped into four subfamilies. Furthermore, we determined the expression profiles in six body parts (namely, the legs, wings, antenna, cuticles of the head, thorax, and abdomen) and five internal tissues (namely, the fat body, midgut, Malpighian tubule, testis, and ovary). The results indicated that 21 BdorOBPs showed high expression levels in the antenna, legs, and head cuticles and may thus perform olfactory functions, which corroborates previous evidence. Two BdorOBPs were specifically expressed in the abdomen cuticles. Nineteen OBPs were highly expressed in the fat body, while four OBPs were highly expressed in the reproductive organs. This indicated that they may have physiological roles other than in chemoreception. In summary, our results contribute to the knowledge base of insect OBPs and provide a foundation for the further study of the molecular mechanisms of chemoreception in B. dorsalis.
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