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Identification of potassium phosphite responsive miRNAs and their targets in potato

ABSTRACT: Identification of potassium phosphite responsive miRNAs and their targets in potato

PROVIDER: PRJNA546567 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR9203810.fastq.gz	Fastqsanger.gz
	SRR9203811.fastq.gz	Fastqsanger.gz
	SRR9203812.fastq.gz	Fastqsanger.gz
	SRR9203813.fastq.gz	Fastqsanger.gz
	SRR9203808.fastq.gz	Fastqsanger.gz

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Identification of potassium phosphite responsive miRNAs and their targets in potato

Project description:The use of phosphites in disease control management and abiotic stress has proven to be effective. Although the mechanisms underlying their effect remain unclear, it has been postulated that miRNAs could be involved. In order to understand these mechanisms we performed NGS sequencing in potato leaves treated or not with KPhi to identify miRNAs responsive to this biocompatible compound. The aim of the present work is to identify miRNAs that are involved in the regulation of potato defense responses after phosphite treatment.

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Project description:The aim of the present work was to gain insight into the mechanisms of action of potassium phosphite. To achive this, we performed microarray analysis to determine changes in gene expression of potato leaves treated with potassium phosphite for 72 hs and the abundance of KPhi primed genes after Phythophtora infestans infection. We have also analyzed in silico their promoters for common cis elements involved in their regulation.

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Identification of potassium phosphite responsive miRNAs and their targets in potato.

Project description:Micro RNAs (miRNAs) are small single strand non-coding RNAs that regulate gene expression at the post-transcriptional level, either by translational inhibition or mRNA degradation based on the extent of complementarity between the miRNA and its target mRNAs. Potato (Solanum tuberosum L.) is the most important horticultural crop in Argentina. Achieving an integrated control of diseases is crucial for this crop, where frequent agrochemical applications, particularly fungicides, are carried out. A promising strategy is based on promoting induced resistance through the application of environmentally friendly compounds such as phosphites, inorganic salts of phosphorous acid. The use of phosphites in disease control management has proven to be effective. Although the mechanisms underlying their effect remain unclear, we postulated that miRNAs could be involved. Therefore we performed next generation sequencing (NGS) in potato leaves treated and non treated with potassium phosphite (KPhi). We identified 25 miRNAs that were expressed differentially, 14 already annotated in miRBase and 11 mapped to the potato genome as potential new miRNAs. A prediction of miRNA targets showed genes related to pathogen resistance, transcription factors, and oxidative stress. We also analyzed in silico stress and phytohormone responsive cis-acting elements on differentially expressed pre miRNAs. Despite the fact that some of the differentially expressed miRNAs have been already identified, this is to our knowledge the first report identifying miRNAs responsive to a biocompatible stress resistance inducer such as potassium phosphite, in plants. Further characterization of these miRNAs and their target genes might help to elucidate the molecular mechanisms underlying KPhi-induced resistance.

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Project description:Time course study of potato leaflets (cv. Desiree) 3, 6, 11, 24 and 48 hours after phosphite treatment

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Project description:New insights into the molecular basis of induced resistance triggered by potassium phosphite in potato

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