Cloning and temporal-spatial expression profiling of the odorant receptor gene <em>AcerOR</em>113 in the Chinese honeybee, <em>Apis cerana cerana</em>
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ACTA ENTOMOLOGICA SINICA  2017, Vol. 60 Issue (5): 533-543    DOI: 10.16380/j.kcxb.2017.05.005
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Cloning and temporal-spatial expression profiling of the odorant receptor gene AcerOR113 in the Chinese honeybee, Apis cerana cerana
DU Ya-Li1, #, WANG Shu-Jie1, #, ZHAO Hui-Ting2, PAN Jian-Fang1, YANG Shuang1,3, GUO Li-Na1, XU Kai1, JIANG Yu-Suo1,*
 (1. College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China; 2. College of Life Science, Shanxi Agricultural University, Taigu, Shanxi 030801, China; 3. Institute of Sericulture and Apiculture, Yunnan Academy of Agricultural Sciences, Mengzi, Yunnan 661101, China)
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Abstract 【Aim】 The objective of this study is to identify the odorant receptor gene from the Chinese honeybee, Apis cerana cerana, and to analyze its structure properties. Moreover, the expression profiles of this gene in different tissues and different developmental stages of A. c. cerana under the plentiful or scarce nectar and pollen source conditions were explored, so as to provide a fundamental evidence for the further study on the physiological function of this gene. 【Methods】 The cDNA sequence of the odorant receptor gene was amplified using RT-PCR from the antenna of A. c. cerana foragers, the deduced protein structure was predicted using different bioinformatics software, and the phylogenetic tree was constructed using neighbor-joining method of MEGA 6.0. The expression profiles of this gene in different tissues (antenna, head without antenna, thorax without wings, abdomen, legs and wings) of workers of different day-old (1, 5, 10, 15, 20, 25 and 30 day-old) under different nectar and pollen source conditions were detected by quantitative real-time PCR. 【Results】 The cDNA sequence of the odorant receptor gene AcerOR113 (GenBank accession no.: KT252877.1) was obtained from the antenna of A. c. cerana foragers. It contains a 1 035 bp open reading frame, encoding a putative protein of 344 amino acids with an estimated molecular weight of 40.13 kD and the theoretical pI of 7.05, no signal peptide, and with six transmembrane structure and N-terminal intracellularly located. A conserved 7tm-6 superfamily domain between 59-343 amino acid residues was identified. Amino acid sequence alignment and phylogenetic analysis showed that AcerOR113 has 94% amino acid sequence identity and the closest evolutionary relationship with AmelOR113 of A. mellifera. Real-time PCR data revealed that the expression level of AcerOR113 was extremely higher in the antenna than in other tissues (P<0.01) of workers of different day-old, and the lowest in the abdomen. In the antenna, the expression level of AcerOR113 under the plentiful nectar and pollen source condition was extremely significantly lower than that under the scarce nectar and pollen source condition (P<0.01). 【Conclusion】 AcerOR113 possesses the typical characteristics of insect odorant receptor, and its gene is highly expressed in the antenna of A. c. cerana adults with significantly higher expression level under the scarce nectar and pollen source condition than under the plentiful nectar and pollen source condition, suggesting that AcerOR113 may be involved in the identification of floral scents of nectar and pollen in the environment.
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Articles by authors
DU Ya-Li
WANG Shu-Jie
ZHAO Hui-Ting
PAN Jian-Fang
YANG Shuang
GUO Li-Na
XU Kai
JIANG Yu-Suo
Key wordsApis cerana cerana   worker   odorant receptor   bioinformatics analysis   temporal-spatial expression   pollen and nectar source     
Cite this article:   
DU Ya-Li,WANG Shu-Jie,ZHAO Hui-Ting et al. Cloning and temporal-spatial expression profiling of the odorant receptor gene AcerOR113 in the Chinese honeybee, Apis cerana cerana[J]. ACTA ENTOMOLOGICA SINICA, 2017, 60(5): 533-543.
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http://www.insect.org.cn/EN/10.16380/j.kcxb.2017.05.005      or     http://www.insect.org.cn/EN/Y2017/V60/I5/533
 
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