Antioxidant protection during ageing and senescence in transgenic tobacco with enhanced activity of cytokinin oxidase/dehydrogenase |
| |
Authors: | D. Procházková N. Wilhelmová |
| |
Affiliation: | (1) Floriculture Section, National Botanical Research Institute, Lucknow, 226001, India |
| |
Abstract: | We studied changes in physiological parameters of whole leaves and in antioxidant protection of chloroplasts during ageing and senescence of tobacco (Nicotiana tabacum L. cv. Samsun NN) leaves with enhanced cytokinin oxidase/dehydrogenase activity (CKX) or without it (WT). Old leaves of CKX plants maintained higher pigment content and photosystem 2 activity compared to WT leaves of the same age. Chloroplasts of old CKX plants showed better antioxidant capacity represented by higher superoxide dismutase, dehydroascorbate reductase and glutathione reductase activities. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |