ArticleMolecular biology reports2024
Expression analysis of defense signaling marker genes in Capsicum annuum in response to phytohormones elicitation.
Article in Molecular biology reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- A multiplant transcriptomic atlas reveals conserved and lineage-specific defense architectures in response toProceedings of the National Academy of Sciences of the United States of America · 2026Article
- AhMTP9-Mediated manganese tolerance mechanisms in peanut: integrated physiological and molecular responses of roots and leaves to Mn stress.BMC plant biology · 2025Article
- Antioxidant metabolism insights into ripening and senescence delay of green pepper fruit through the salicylic acid preharvest treatment.Frontiers in plant science · 2025Article
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Abstract
backgroundTo tolerate biotic stress, plants employ phytohormones such as jasmonic acid (JA), salicylic acid (SA), and ethylene (ET) to regulate the immune response against different pathogens. Phytohormone-responsive genes, known as "Defense signaling marker genes," are used to evaluate plant disease resistance during pathogen infection. Most information on these marker genes derives from studies on the model plant Arabidopsis thaliana. The present study was aimed analyze the effect of hormonal elicitation at different concentrations at 24 h pos-treatment in the transcript level of 8 traditional genes selected for molecular studies plant-pathogen interactions in Capsicum. METHODS AND
resultsChemical treatment was achieved by spraying leaves of in vitro seedlings C. annuum L. with 0.1 mM, 1 mM or 2.5 mM ET; 1 mM, 2.5 mM, or 5 mM SA; 2.5 mM BABA; or 0.150 mM MeJA. Twenty-four hours after treatments were applied molecular analyses were carried out using qPCR to investigate the expression. Results revealed that 1 mM of ET or 0.15 mM of MeJA activated the expression CaPR1 (18--11.64-fold change), CaLOX2 (13.80-fold), CaAP2/ERF06 (22- 5.3- fold change), and CaPDF1.2 (2.3-1.5- fold). While, 5 mM of SA present effect of negative regulation on the expression in most of these genes.
conclusionsOur results show that the expression profile induced by phytohormones in CaPR1 are particular in C. annuum, because were significantly induced for ET/MeJA, and dow-regulation with SA Contrary to Arabidopsis. Although, on both plants it is observed the cross talk between JA/ET and SA mediated signal pathways for the regulation of this gene.
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