Virus-induced silencing of a tobacco deoxyhypusine synthase gene

文献类型: 外文期刊

第一作者: Wang, HZ

作者: Wang, HZ;Ma, RC;Li, RF;Wang, GY;Wei, JH

作者机构:

关键词: DHS;Nicotiana benthamiana;VIGS;senescence;promoting growth

期刊名称:CHINESE SCIENCE BULLETIN ( 影响因子:1.649; 五年影响因子:1.738 )

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收录情况: SCI

摘要: A cDNA fragment corresponding to deoxyhypusine synthase gene NbDHS was isolated and cloned into potato virus X (PVX) vector for functional analysis in Nicotiana benthamiana by using virus-induced gene silencing (VIGS). Plants agroinfected with recombinant virus vector PVX-NbDHS exhibited an increase in leaf biomass, delay in natural leaf senescence and flowering time, and decrease in leaf chlorophyll content. Semi-quantitative RT-PCR and Northern analysis showed that the transcript level of DHS was significantly lower in PVX-NbDHS infected plants. At the same time, the expression for eIF-5A, the target proteins of DHS in N. benthamiana, was concomitantly suppressed by semi-quantitative RT-PCR. and Western analysis. From the phenotypic feature of the infected plants and the reduced expression abundance of DHS and eIF-5A, we concluded that NbDHS plays important roles in plant growth, development and senescence. The possible application of DHS gene in genetic modification of crops and horticultural plants was discussed.

分类号: N1

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