Chaitanya G, Pavani Ch, Shasthree T
Kakatiya University, Warangal, Telangana India.
Singareni Women's Degree College, Kothagudem, Telangana India.
Int J Environ Sci Technol (Tehran). 2022 Jul 27:1-8. doi: 10.1007/s13762-022-04437-9.
Heavy metals have played a great role in the genesis of the present-day civilization. Human beings are affected when these metals are added to the food chain. Although these are the most important plant nutrients, they are phytotoxic at high concentrations. Heavy metals at super optimal concentrations affect different metabolic pathways in plants and result in their ceased growth and development. They may enter plants either by their root system or through foliar uptake; stunted growth, chlorosis, necrosis, and reddish-brown discoloration are visible symptoms of severe metallic phytotoxicity. The study of heavy metal stress tolerance on shows the effect on the plant growth and metabolism. All heavy metals treated with high concentrations affect the overall plant growth. The Murashige and Skoog (MS) basal medium with ZnSO at 100 µM concentration resulted in healthy shoot development (9) with a maximum shoot length of 7.2 cm. MS basal medium with low concentration of CuSO (50 µM) achieved a maximum shoot number (7) with healthy leaves and shoots. MS basal medium with higher concentration of CdCl (150 µM) affects plant growth and reduced the regeneration capability completely.
重金属在当今文明的起源中发挥了重要作用。当这些金属进入食物链时，人类会受到影响。尽管这些是最重要的植物养分，但在高浓度时它们具有植物毒性。超最佳浓度的重金属会影响植物的不同代谢途径，并导致其生长发育停止。它们可能通过植物的根系或通过叶片吸收进入植物；生长发育迟缓、黄化、坏死以及红棕色变色是严重金属植物毒性的明显症状。对重金属胁迫耐受性的研究表明其对植物生长和代谢的影响。所有高浓度处理的重金属都会影响植物的整体生长。含有100 µM浓度硫酸锌的Murashige和Skoog（MS）基础培养基可使芽健康发育（9），最大芽长为7.2厘米。含有低浓度硫酸铜（50 µM）的MS基础培养基可使芽的数量最多（7），叶片和芽均健康。含有较高浓度氯化镉（150 µM）的MS基础培养基会影响植物生长并完全降低再生能力。
