Functional analysis of a viroid RNA motif mediating cell-to-cell movement in Nicotiana benthamiana
文献类型: 外文期刊
第一作者: Wang, Meng
作者: Wang, Meng;Jiang, Dongmei;Li, Shifang;Jiang, Dongmei
作者机构:
关键词: viroid;function;RNA;motif;movement
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: Cell-to-cell trafficking through different cellular layers is a key process for various RNAs including those of plant viruses and viroids, but the regulatory mechanisms involved are still not fully elucidated and good model systems are important. Here, we analyse the function of a simple RNA motif (termed 'loop19') in potato spindle tuber viroid (PSTVd) which is required for trafficking in Nicotiana benthamiana leaves. Northern blotting, reverse transcriptase PCR (RT-PCR) and in situ hybridization analyses demonstrated that unlike wild-type PSTVd, which was present in the nuclei in all cell types, the trafficking-defective loop19 mutants were visible only in the nuclei of upper epidermal and palisade mesophyll cells, which shows that PSTVd loop19 plays a role in mediating RNA trafficking from palisade to spongy mesophyll cells in N. benthamiana leaves. Our findings and approaches have broad implications for studying the RNA motifs mediating trafficking of RNAs across specific cellular boundaries in other biological systems.
分类号: R37
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