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Identification and expression analysis of odorant binding proteins and chemosensory proteins from dissected antennae and mouthparts of the rice bug Leptocorisa acuta.
Comparative Biochemistry and Physiology D: Genomics & Proteomics ( IF 2.2 ) Pub Date : 2019-11-01 , DOI: 10.1016/j.cbd.2019.100631
Meng-Qiu Qu 1 , Yang Cui 1 , Yan Zou 1 , Zhong-Zhen Wu 1 , Jin-Tian Lin 1
Affiliation  

The rice bug, Leptocorisa acuta (Tunberg) (Hemiptera: Alydidae), is a notorious pest in Asia, and it is significantly attracted by the volatiles derived from host plants. However, it remains unknown how L. acuta recognizes host volatile compounds at the molecular level. Odorant-binding proteins (OBPs) and chemosensory proteins (CSPs) are thought to be responsible for the initial biochemical recognition during olfactory perception. Here, we followed the RNA Sequencing (RNA-Seq) approach to identify candidate genes encoding OBPs and CSPs from dissected antennae and mouthparts of L. acuta. In total, 26 unigenes were identified coding for OBPs (22 Classic OBPs and four Plus-C OBPs), and 17 unigenes coding for CSPs. Real-time quantitative PCR (RT-qPCR) revealed that 11 OBPs (LacuOBP1, 5, 6, 7, 9, 11, 13, 14, 17, 20 and 23) and nine CSPs (LacuCSP2, 3, 4, 5, 6, 8, 9, 10 and 12) were predominantly expressed in antennae, indicating that they might be essential for detection of general odorants and pheromones. Among these antennae-predominantly expressed genes, LacuOBP11 and LacuOBP13 showed male-biased expression and therefore may play crucial roles in the detection of sex pheromones. Seven LacuOBPs (LacuOBP4, 8, 10, 12, 21, 25 and 26) and two CSPs (LacuCSP7 and LacuOBP11) were predominantly expressed in mouthparts, suggesting that these genes might be involved in taste perception. Our work provides a starting point to facilitate functional study of these OBPs and CSPs in L. acuta at the molecular level in the future.

中文翻译:

稻bug Leptocorisa acuta解剖后触角和口器中的气味结合蛋白和化学感觉蛋白的鉴定和表达分析。

稻虫Leptocorisa acuta(Tunberg)(半翅目:Alydidae)在亚洲是一个臭名昭著的害虫,它被寄主植物的挥发物所吸引。然而,尚不知道阿卡氏乳杆菌如何在分子水平上识别宿主挥发性化合物。气味结合蛋白(OBP)和化学感应蛋白(CSP)被认为是嗅觉感知过程中最初的生化识别的原因。在这里,我们遵循了RNA测序(RNA-Seq)的方法,从切割的A. acuta触角和口器中鉴定出编码OBP和CSP的候选基因。总共鉴定出了26个编码OBP的单基因(22个经典OBP和四个Plus-C OBP),以及17个编码CSP的单基因。实时定量PCR(RT-qPCR)显示11个OBP(LacuOBP1、5、6、7、9、11、13、14、17、20和23)和9个CSP(LacuCSP2、3、4,5、6、8、9、10和12)主要在触角中表达,表明它们对于检测一般的香精和信息素可能是必不可少的。在这些以触角为主的基因中,LacuOBP11和LacuOBP13显示出男性偏向的表达,因此可能在性信息素的检测中起关键作用。七种LacuOBP(LacuOBP4、8、10、12、21、25和26)和两个CSP(LacuCSP7和LacuOBP11)主要在口器中表达,表明这些基因可能与味觉有关。我们的工作提供了一个起点,以促进将来在分子生物学中对金黄色葡萄球菌中的这些OBP和CSP进行功能研究。在这些以触角为主的基因中,LacuOBP11和LacuOBP13显示出男性偏向的表达,因此可能在性信息素的检测中起关键作用。七种LacuOBP(LacuOBP4、8、10、12、21、25和26)和两个CSP(LacuCSP7和LacuOBP11)主要在口器中表达,表明这些基因可能与味觉有关。我们的工作提供了一个起点,以促进将来在分子生物学中对金黄色葡萄球菌中的这些OBP和CSP进行功能研究。在这些以触角为主的基因中,LacuOBP11和LacuOBP13显示出男性偏向的表达,因此可能在性信息素的检测中起关键作用。七种LacuOBP(LacuOBP4、8、10、12、21、25和26)和两个CSP(LacuCSP7和LacuOBP11)主要在口器中表达,表明这些基因可能与味觉有关。我们的工作提供了一个起点,以促进将来在分子生物学中对金黄色葡萄球菌中的这些OBP和CSP进行功能研究。提示这些基因可能参与了味觉感知。我们的工作提供了一个起点,以促进将来在分子生物学中对金黄色葡萄球菌中的这些OBP和CSP进行功能研究。提示这些基因可能参与了味觉感知。我们的工作提供了一个起点,以促进将来在分子生物学中对金黄色葡萄球菌中的这些OBP和CSP进行功能研究。
更新日期:2019-11-01
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