Down-regulating tomato SlRDR1a gene expression increases plant sensitivity to PSTVd infection (severe leaf curling and shrinking symptoms) Image courtesy of the Chinese Academy of Agricultural Sciences
Down-regulating tomato SlRDR1a gene expression increases plant sensitivity to PSTVd infection (severe leaf curling and shrinking symptoms) Image courtesy of the Chinese Academy of Agricultural Sciences On July 25, "Molecular Plant Pathology" ( Molecular Plant Pathology ) published online the latest results of the Economic Crop Virus Diseases Research Group of the Institute of Plant Protection, Chinese Academy of Agricultural Sciences
Molecular Plant Pathology According to researcher Li Shifang, the corresponding author of the paper, viroids are non-coding circular single-stranded RNA molecules that can replicate autonomously, with a size of 246 nt-475 nt, and so far have only been found in higher plants
Among them, the potato spinning tuber virus (PSTVd) is a representative species of the potato spindle tuber virus family, potato spindle tuber virus genus.
This study used potato spinning tuber virus and tomato/tobacco combination to explore the mechanism of RNA polymerase 1 in plant resistance to virus infection
Studies have found that Ben's tobacco overexpressing RNA polymerase 1 gene (NtRDR1) can inhibit the accumulation of potato spinning tuber virus genomic RNA and PSTVd-sRNA (sRNA) in the early stage of infection, but the inhibition effect is not obvious in the later stage of infection
In contrast, plants with tomato RNA polymerase 1 (SlRDR1a) gene silenced increased their susceptibility to potato spinning tuber virus infection and increased the amount of potato spinning tuber virus accumulation
This research is the first report on the involvement of plant RNA polymerase 1 protein in plant defense against viruses, enriching our understanding of the interaction between plant viruses and hosts, and providing new ideas and methods for the prevention and control of plant virus diseases
The research was funded by the National Natural Science Foundation of China, the special government cooperation project of the National Key Research and Development Program, and the basic scientific research business expenses of the Chinese Academy of Tropical Agricultural Sciences .
The research was funded by the National Natural Science Foundation of China, the special government cooperation project of the National Key Research and Development Program, and the basic scientific research business expenses of the Chinese Academy of Tropical Agricultural Sciences .
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