Effect of copper and zinc toxicity on physiological and biochemical parameters in Vigna mungo (L.) Hepper
نویسندگان
چکیده
The present study aimed at investigating the effects of copper and zinc in Vigna mungo (L.) growth and metabolism. Physiological parameters decrease consequently with increasing copper and zinc concentration in nutrient medium. Copper at 0.2mM concentration led to 32.12% and 47.82% reduction in fresh weight and dry weight respectively whereas, zinc at 1.50mM concentration resulted in 23.83% and 70.56% decrease in fresh weight and dry weight of seedlings with respect to control. The combined effect of copper and zinc on seedling growth was antagonistic at low concentration but showed additive effect at high concentrations. The results demonstrated an increase in DNA content/mg fr. Wt. of seedlings up to 124.45% at 0.2mM Cu + 1.50mM Zn and RNA content was adversely affected in all treatment conditions. Moreover, seedlings exposed to copper and zinc metal ions have shown significant variations in phosphate hydrolysis and mobilization from source to sink and specific activity of acid phosphatase.
منابع مشابه
Mineral Constituent Variations under Cobalt Treatment in Vigna mungo (L.) Hepper
A study was carried out to understand the mineral constituent variations under cobalt treatment in Vigna mungo (L.) Hepper. The experiments were conducted in earthen pots and lined the inner surface with polythene sheet. Each pot contains 3 kg of air dried soil. Blackgram plants were raised in these pots containing soils amended with different concentrations of cobalt (0, 50, 100, 150, 200 and ...
متن کاملEffect of different concentrations of Zinc and their interaction with Sodium nitroprusside (SNP) on physiological and biochemical parameters of Plantago major L. Sara Nasiri Savadkoohi1*, Sakineh Saeidi-sar2 Abbas Ali Dehpour3 and Hossein Abbaspour1
Zinc is a necessary micronutrient in plants whose deficiency can alter essential functions in plant metabolism. High concentrations of Zn can be potentially toxic to plants causing phytotoxicity by the formation of reactive oxygen species. On the other hand, sodium nitroprusside (SNP), a donor of nitric oxide (NO) can protect cells from oxidative damage produce by reactive oxygen species. In th...
متن کاملEffect of seaweed liquid extract of Caulerpa scalpelliformis on growth and biochemical constituents of black gram (Vigna mungo (L.) Hepper)
Effect of Seaweed Liquid Extract (SLE) of Caulerpa scalpelliformis on growth and biochemical constituents of Vigna mungo was studied. The lower concentration of SLE of C. scalpelliformis (25%) enhanced the percentage of germination, shoot length, root length and biochemical constituents viz., chlorophyll, carotenoid, amino acid, reducing sugar and total sugar contents and α-amylase and β-amylas...
متن کاملEffect of Enhanced Uv-b Radiation on Germination, Seedling Growth and Biochemical Responses of Vigna Mungo (l.) Hepper
The study focuses on the effect of supplemental UV-B radiation on germination, seedling growth, chlorophyll a and b contents, soluble phenols, anthocyanins, flavones contents, phenylalanine ammonia lyase (PAL) activity and tyrosine ammonia lyase (TAL) activity of mash-bean (Vigna mungo (L.) Hepper.). Even though the germination velocity was substantially increased, the final germination percent...
متن کاملDirect Plant Regeneration from Cotyledonary Explants of Blackgram (vigna Mungo L.) Hepper
The present study was undertaken to investigate the possibility for developing Efficient Plant regeneration protocol in Vigno mungo L. For this, the effect of Cytokinens on in vitro regeneration from Cotyledonary explants was studied in Black gram (Vigno mungo L.) Hepper Var Vamban-1. The cytokinins used were 6-benzylaminopurine (BAP), Thidiazuron (TDZ), and kinetin (Kn). The regenerated shoots...
متن کامل