Effects of lead (Pb)-induced oxidative stress on morphological and physio-biochemical properties of rice

In rice, high concentration of lead (Pb) can cause phyto-toxicity affecting several physiological functions. Cultivation rice varieties that are resistant to Pb-induced oxidative stress is an important management strategy in Pb-contaminated soils. the current study, we evaluated four different cultivars for their response stress. Three japonica type X-Jigna, Ediget, and Furat, one Indica cultivar Amber 33 were grown soil containing Pb concentrations (0 mM, 0.6 1.2 mM). The was treated with 0 mM or solution month prior seedling transplantation. Thereafter, four-week-old seedlings transplanted into responses observed until maturity. data revealed a highest (1.2 mM) induced significant reduction agronomic traits such as plant height, number tillers per plant, panicles spikelets panicle all cultivars. However, least whereas Ediget. Antioxidant activity catalase (CAT), peroxidase (POD), polyphenol oxidase (PPO), superoxide dismutase (SOD), along accumulation ions (O2.-), protein, proline, chlorophyll, sucrose, glucose, fructose contents A increase antioxidant proline sucrose chlorophyll protein X-Jigna suggesting most tolerant among tested against Pb-stress. On other hand, non-significant slightly activity, less contents, higher which further suggest Ediget susceptible addition, Furat 33, found be moderately summary, our results tolerance would result synergetic action both enzymatic non-enzymatic systems, leading balanced redox status rice.