Mitigating copper toxicity in Carthamus tinctorius L. through 6-benzylaminopurine during seed germination and vegetative growth - PubMed
2 hours ago
- #Cytokinins
- #Copper Toxicity
- #Plant Stress Tolerance
- Cytokinins like 6-Benzylaminopurine (BAP) help mitigate copper (Cu) toxicity in Carthamus tinctorius L. (safflower) during seed germination and growth.
- High Cu levels reduced germination, growth, photosynthetic pigments, and peroxidase activity, while increasing carbohydrates, polyphenol oxidase activity, Cu accumulation, and expression of stress-related genes.
- BAP application improved germination and growth under Cu stress, enhancing chlorophyll, carotenoids, proteins, antioxidant enzymes, and gene expression for PAL and SOD, while reducing phenolic and anthocyanin content.
- The study used a factorial design with varying CuSO4 and BAP levels, showing that 350 µM BAP under severe Cu toxicity significantly boosted multiple physiological and biochemical parameters.
- Findings suggest BAP reduces Cu-induced toxicity by enhancing antioxidant activity and regulating defense genes, improving plant tolerance to heavy metal stress.