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Unusual characteristics of dicistrovirus-derived small RNAs in the small brown planthopper, Laodelphax striatellus

文献类型： 外文期刊

作者： Li, Junmin 1 ; Andika, Ida Bagus 1 ; Zhou, Yanru; Shen, Jiangfeng; Sun, Zongtao 1 ; Wang, Xu 1 ; Sun, Liying 1 ; Ch 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, State Key Lab Breeding Base Zhejiang Sustainable, Key Lab Biotechnol Plant Protect, Minist Agr,Inst Virol & Biotechnol, Hangzhou 310021, Zhejiang, Peoples R China

2.Zhejiang Acad Agr Sci, State Key Lab Breeding Base Zhejiang Sustainable, Key Lab Biotechn

关键词： Unusual;dicistrovirus-derived;Laodelphax

期刊名称：JOURNAL OF GENERAL VIROLOGY （ 影响因子：3.891； 五年影响因子：3.719 ）

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收录情况： SCI

摘要： In this study, sequences of small RNA (sRNA) libraries derived from the insect vector Laodelphax striatellus were assembled into contigs and used as queries for database searches. A large number of contigs were highly homologous to the genome sequence of an insect dicistrovirus, himetobi P virus (HiPV). Interestingly, HiPV-derived sRNAs had a wide size distribution, and were relatively abundant throughout the 18-30 nt size range with only a slight peak at 22 nt. HiPV sRNAs had a strong bias towards the sense strand, whilst the antisense sRNAs were predominantly 21 and 22 nt. HiPV sRNAs do not have the typical features of PIWI-interacting RNAs, but their 39 ends were preferentially cleaved at UA-rich sequences. Our data suggest that HiPV sRNAs may be derived both from activities of the RNA interference pathway and from cleavage of the viral genome by other host RNases.

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