Boosting of Antioxidants and Alkaloids in Catharanthus roseus Suspension Cultures Using Silver Nanoparticles with Expression of CrMPK3 and STR Genes.
Ahmed S FouadAdel E HegazyEmad El-Din EwaisEbtihal KhojahTarek KapielPublished in: Plants (Basel, Switzerland) (2021)
Global agricultural systems are under unprecedented pressures due to climate change. Advanced nano-engineering can help increase crop yields while ensuring sustainability. Nanotechnology improves agricultural productivity by boosting input efficiency and reducing waste. Alkaloids as one of the numerous secondary metabolites that serve variety of cellular functions essential for physiological processes. This study tests the competence of silver nanoparticles (AgNPs) in boosting alkaloids accumulation in Catharanthus roseus suspension cultures in relation to the expression of C. roseus Mitogen Activated Protein Kinase 3 (CrMPK3) and Strictosidine Synthase (STR) genes. Five concentrations (5, 10, 15, 20 and 25 mg·L-1) of AgNPs were utilized in addition to deionized water as control. Results reflected binary positive correlations among AgNPs concentration, oxidative stress indicated with increase in hydrogen peroxide and malondialdehyde contents, activities of ascorbate peroxidase and superoxide dismutase, expression of the regulatory gene CrMPK3 and the alkaloid biosynthetic gene STR as well as alkaloids accumulation. These correlations add to the growing evidence that AgNPs can trigger the accumulation of alkaloids in plant cells through a signaling pathway that involves hydrogen peroxide and MAPKs, leading to up-regulation of the biosynthetic genes, including STR gene.
Keyphrases
- silver nanoparticles
- hydrogen peroxide
- climate change
- genome wide identification
- genome wide
- poor prognosis
- nitric oxide
- oxidative stress
- induced apoptosis
- signaling pathway
- transcription factor
- genome wide analysis
- copy number
- heavy metals
- binding protein
- risk assessment
- dna methylation
- human health
- pi k akt
- long non coding rna
- bioinformatics analysis
- epithelial mesenchymal transition
- life cycle
- dna damage
- municipal solid waste
- anaerobic digestion