Dou Xiaoyi, Liu Sijun, Soroker Victoria, Harari Ally, Jurenka Russell
Department of Entomology, Iowa State University, Ames, IA 50011, USA.
The Volcani Center, Institute of Plant Protection, ARO, Bet-Dagan 50250, Israel.
Insects. 2021 Jun 15;12(6):556. doi: 10.3390/insects12060556.
In this study, we analyzed the transcriptome obtained from the pheromone gland isolated from two Israeli populations of the pink bollworm to identify viral sequences. The lab population and the field samples carried the same viral sequences. We discovered four novel viruses: two positive-sense single-stranded RNA viruses, Pectinophora gossypiella virus 1 (PecgV1, a virus of ) and Pectinophora gossypiella virus 4 (PecgV4, unclassified), and two negative-sense single-stranded RNA viruses, Pectinophora gossypiella virus 2 (PecgV2, a virus of ) and Pectinophora gossypiella virus 3 (PecgV3, a virus of ). In addition, sequences derived from two negative-sense single-stranded RNA viruses that belong to were found in the data. Analysis of previous transcriptome sequencing data derived from the midgut of pink bollworm larvae of a USA population only identified PecgV1, but no other viruses. High viral sequence coverages of PecgV1 and PecgV4 were observed in both field and lab populations. This is the first report of viral sequences discovered from the pink bollworm. Results from this investigation suggest that the pink bollworm harbors multiple viruses. Further investigation of the viral pathogens may help to develop novel pest management strategies for control of the pink bollworm.
在本研究中,我们分析了从以色列两个棉铃虫种群分离出的性信息素腺中获得的转录组,以鉴定病毒序列。实验室种群和田间样本携带相同的病毒序列。我们发现了四种新型病毒:两种正链单链RNA病毒,即棉铃虫病毒1(PecgV1,一种属于 的病毒)和棉铃虫病毒4(PecgV4,未分类),以及两种负链单链RNA病毒,即棉铃虫病毒2(PecgV2,一种属于 的病毒)和棉铃虫病毒3(PecgV3,一种属于 的病毒)。此外,在数据中还发现了来自两种属于 的负链单链RNA病毒的序列。对美国种群棉铃虫幼虫中肠的先前转录组测序数据进行分析,仅鉴定出PecgV1,未发现其他病毒。在田间和实验室种群中均观察到PecgV1和PecgV4的高病毒序列覆盖率。这是首次从棉铃虫中发现病毒序列的报告。本调查结果表明棉铃虫携带多种病毒。对病毒病原体的进一步研究可能有助于开发控制棉铃虫的新型害虫管理策略。