WANG Yu,QIAN Hua,JIANG Xin-xin,et al.Cloning and Developmental Stages Expression of the Olfactory Coreceptor Gene in Leguminivora glycinivorella (Lepidoptera: Olethreutidae)[J].Soybean Science,2016,35(01):124-129.[doi:10.11861/j.issn.1000-9841.2016.01.0124]
大豆食心虫非典型气味受体基因克隆及发育期表达分析
- Title:
- Cloning and Developmental Stages Expression of the Olfactory Coreceptor Gene in Leguminivora glycinivorella (Lepidoptera: Olethreutidae)
- Keywords:
- Leguminivora glycinivorella; Olfactory receptor; Gene clone; Sequence analysis; Expression quantity of developmental stages
- 文献标志码:
- A
- 摘要:
- 非典型气味受体是昆虫嗅觉识别过程中重要的蛋白之一。本研究利用RT-PCR和巢式PCR的方法克隆了大豆食心虫非典型气味受体Olfactory co-receptor基因,命名为LglyOrco,其编码区为1 419 bp,编码473个氨基酸,氨基酸序列中存在3个N位糖基化位点,分子量为53.5 kD,等电点为7.12,含7个跨膜结构以及4个位于细胞膜外的亲水区,符合气味受体的典型结构特征。与鳞翅目已知昆虫的Orco同源性达到89%以上。不同发育期LglyOrco表达量分析表明,LglyOrco在二龄和三龄幼虫中的表达量是一龄幼虫的4~5倍,在四龄和五龄幼虫中的表达量是一龄幼虫的70%和50%,而在雌性成虫中的表达量是雄性成虫中的11倍。本研究将为大豆食心虫的嗅觉识别系统和大豆食心虫防治技术研究提供理论依据。
- Abstract:
- Olfactory co-receptor is one of the most important proteins in the process of insect identify system.In this study we cloned and analyzed an olfactory coreceptor of L. glycinivorella, which was named LglyOrco.The results showed that the full-length open reading frame of LglyOrco was 1 419 bp, encoding 473 amino acid residues and 3 N.glycosylation sites.The molecular weight of LglyOrco was 53.5 kDa and isoelectric point was 7.12. Blast searching in NCBI showed that the deduced amino acid sequence was highly similar with that of other .Orcos of Lepidoptera with acid sequence identities above 89%.LglyOrco- expression in second and third instar larva were 3 to 4 times higher than the first instar larva, forth and fifth instars larva were only 70% and 50% of the first instar larva respectively. The expression of LglyOrco was 10 times higher in the female adult than in the male adult. This study provides theoretical basis to the researching of L. glycinivorella identify system and control technique of L. glycinivorella.
参考文献/References:
[1]王宇.苜蓿夜蛾和大豆食心虫气味感受相关蛋白基因的克隆分析及表达[D]. 哈尔滨:东北农业大学, 2012.(Wang Y. Molecular cloning, analysis and expression of olfactory genes of Heliothis viriplaca and Leguminivora glycinivorella[D]. Harbin:Northeast Agricultural University, 2012)
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备注/Memo
基金项目:黑龙江省农业科技创新工程(2012ZD035)。