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

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

PROVIDER: PRJNA561502 | ENA |

REPOSITORIES: ENA

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

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.

2019-12-04 | GSE136094 | GEO

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.

2019-08-30 | GSE132232 | GEO

Identification of potassium phosphite responsive miRNAs and their targets in potato

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

| PRJNA546567 | ENA

Time course study of phosphite treated potato leaflets

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

2014-10-27 | E-MTAB-2243 | biostudies-arrayexpress

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.

| S-EPMC6742386 | biostudies-literature

dissimilatory phosphite oxidizing enrichment metagenome

Project description:Dissimilatory Phosphite Oxidation (DPO) metagenomes

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Transcription profiling of Arabidopsis wsk1 mutant after treatment with low potassium

Project description:To elucidate the molecular basis of how plant response and adapt to low potassium, we performed a comparative transcriptomic analysis of wsk1 mutant and wild-type plants upon treatment with low potassium.

2022-06-30 | E-MTAB-4835 | biostudies-arrayexpress

Molecular basis for cytoplasmic RNA surveillance by uridylation-triggered decay in Drosophila

Project description:Molecular basis for cytoplasmic RNA surveillance by uridylation-triggered decay in Drosophila

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Phosphate and phosphite differentially impact the proteome and phosphoproteome of Arabidopsis suspension cell cultures

Project description:Phosphorus is an essential limited nutrient for plant growth and modern agricultural productivity. A comprehensive understanding of how plants respond to phosphate starvation is essential to develop more phosphate-use efficient crops. Here we quantified protein-level responses to phosphate (PO4-) and phosphite (PO3-) in Arabidopsis thaliana suspension cells, relative to a phosphate-starved state using label-free proteomics and phosphoproteomics. Phosphite is similarly sensed and taken up by plants as phosphate but cannot be used as a source of phosphorus. Phosphite is hence a useful tool to delineate between non-specific processes related to sensing and transport, and specific responses to phosphorus nutrition. We find that responses to phosphate and phosphite occur mainly at the level of protein phosphorylation, complemented by limited changes in protein abundance, primarily in protein translation, and phosphate transport and scavenging proteins. Phosphorylation changes in proteins involved in core processes such as translation, RNA splicing and kinase signalling are especially important in phosphate starvation. We also find differential phosphorylation in response to phosphate and phosphite in 69 proteins, including splicing factors, translation factors, the PHT1;4 phosphate transporter and the HAT1 histone acetyltransferase—potential phospho-switches sensing changes in phosphorus nutrition. Our study hence illuminates several new aspects of the phosphate-starvation response and identifies important targets for further investigation and crop improvement.

2021-01-04 | PXD018989 | Pride

Expression data from roots of Arabidopsis grown under sulfur, iron or potassium limitation

Project description:Deprivation of mineral nutrients causes significant retardation of plant growth. This slow growth is assumed to be associated with both nutrient specific transcriptional responses and additionally with common transcription patterns. In this study we adjusted the external supply of iron, potassium and sulfur to cause a similar retardation of growth. Global transcriptome analyses were performed to investigate whether the growth limitation by the different nutrient deficiencies triggered specific or similar transcriptional responses. The global transcriptome responded specifically to sulfur, iron or potassium deprivation.

2016-07-21 | GSE77602 | GEO

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