Subgenomic RNAs: The Possible Building Blocks for Modular Recombination ofClosteroviridaeGenomes

Moshe Bar-Joseph , Guang Yang, Ron Gafny, Munir Mawassi
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引用次数: 25

Abstract

TheClosteroviridaeinclude several plant viruses of considerable economic importance, with unusually large positive-strand genomes of up to 20 kb. Molecular characterization of several of these viruses has now confirmed their coherent and unique position among the elongated plant RNA viruses. Structural comparisons of their genomes suggested a modular composition. The recent finding of multiple species of citrus tristeza virus (CTV) defective-RNAs, which have apparently resulted from the recombination of a subgenomic (sg)RNA, with distant parts from the 5′ end of the CTV genome, suggests thatClosteroviridaeare probably able to utilize sgRNAs and/or their promoter signals as factors for the modular exchange and rearrangement of their genomes.

亚基因组rna:群集病毒基因组模块化重组的可能构建模块
闭门病毒包括几种具有相当重要经济意义的植物病毒,其正链基因组异常大,可达20 kb。其中一些病毒的分子特征现已证实它们在细长型植物RNA病毒中具有一致性和独特的地位。他们基因组的结构比较表明是模块化的组成。最近发现了多种柑橘tristeza病毒(CTV)缺陷RNA,这些缺陷RNA显然是由亚基因组(sg)RNA与CTV基因组5 '端远处部分的重组引起的,这表明closteroviriae可能能够利用sgRNAs和/或其启动子信号作为其基因组模块交换和重排的因素。
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