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Exogenous Melatonin RegulatesAlternaria brassicaeReproduction and Pathogenicity in a Dose-Dependent Manner [miRNA_degradome]


ABSTRACT: The development of viroid-elimination technology is an important means to ensure the production of tomatoes. Viroid is an obligate pathogen that can infect the apical meristem cells. The combination of low-temperature therapy and meristem culture is a commonly used method for viroid eradication, but tomatoes cannot withstand long-term low-temperature treatment. This study identified a new HSVd genotype and measured the growth and physiological parameters of diseased tomato “Alisa Craig”. Five HSVd-targeting ds-sRNAs were synthesized to match different regions of the HSVd genome, and their permeability in plants was tested. By screening the types of ds-sRNA and processing duration, the optimal treatment for inhibiting HSVd in diseased tomato shoot terminal was obtained. miRNAs produced by HSVd genome were detected by using miRNA-seq and degradation-seq to verify the occurrence of the ds-sRNA induced HSVd gene silencing. Exogenous ds-sRNA can penetrate all cells including vascular bundles, thin-walled cells, and stem apical meristematic tissues and induced HSVd gene silencing in shoot terminals, leading to the accumulation of miRNAs produced by HSVd in plants.

ORGANISM(S): Solanum lycopersicum

PROVIDER: GSE254911 | GEO | 2024/02/07

REPOSITORIES: GEO

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