کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4557696 1628231 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simultaneous occurrence of covert infections with small RNA viruses in the lepidopteran Spodoptera exigua
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Simultaneous occurrence of covert infections with small RNA viruses in the lepidopteran Spodoptera exigua
چکیده انگلیسی


• We sequence the genomes of RNA viruses from Spodoptera exigua.
• We named the viruses SeIV2 and SeNV.
• We compare SeIV2 and SeNV to previously described by our group SeIV1.
• We report transmission and tissue and life stage distribution.
• We also test abundance of the three Spodoptera exigua RNA viruses in the host.

Viral covert infections in invertebrates have been traditionally attributed to sublethal infections that were not able to establish an acute infection. Recent studies are revealing that, although true for some viruses, other viruses may follow the strategy of establishing covert or persistent infections without producing the death of the host. Recently, and due to the revolution in the sequencing technologies, a large number of viruses causing covert infections in all type of hosts have been identified.The beet armyworm, Spodoptera exigua (Lepidoptera: Noctuidae) is a worldwide pest that causes significant losses to agricultural and ornamental plant industries. In a previous project we used NGS to obtain a comprehensive transcriptome of the larval stage, revealing the presence of an important number of unigenes belonging to novel RNA viruses, most of them from the order Picornavirales. In order to characterize S. exigua viral complex, in this work we have completed the genomic sequences of two picorna-like viruses, and compared them to a SeIV1, a member of Iflaviridae previously described by our group. We performed additional studies to determine virus morphology, horizontal transmission, tissue and life stage distribution and abundance in the hosts. We discuss the role of virus persistent infections on insect populations.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Invertebrate Pathology - Volume 121, September 2014, Pages 56–63
نویسندگان
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