Zaid Abbu, Mohammad Firoz, Fariduddin Qazi
Plant Physiology and Biochemistry Section, Department of Botany, Aligarh Muslim University, Aligarh, 202002 India.
Physiol Mol Biol Plants. 2020 Jan;26(1):25-39. doi: 10.1007/s12298-019-00715-y. Epub 2019 Nov 1.
Menthol mint ( L.) cultivation is significantly affected by the heavy metals like cadmium (Cd) which also imposes severe health hazards. Two menthol mint cultivars namely Kosi and Kushal were evaluated under Cd stress conditions. Impact of plant growth regulators (PGRs) like salicylic acid (SA), gibberellic acid (GA) and triacontanol (Tria) on Cd stress tolerance was assessed. Reduced growth, photosynthetic parameters, mineral nutrient concentration, and increased oxidative stress biomarkers like electrolyte leakage, malondialdehyde, and hydrogen peroxide contents were observed under Cd stress. Differential upregulation of proline content and antioxidant activities under Cd stress was observed in both the cultivars. Interestingly, low electrolyte leakage, lipid peroxidation, hydrogen peroxide and Cd concentration in leaves were observed in Kushal compared to Kosi. Among all the PGRs tested, SA proved to be the best in improving Cd-stress tolerance in both the cultivars but Kushal responded better than Kosi.
薄荷(L.)的种植受到镉(Cd)等重金属的显著影响,这些重金属还会对健康造成严重危害。在镉胁迫条件下,对两个薄荷品种Kosi和Kushal进行了评估。评估了水杨酸(SA)、赤霉素(GA)和三十烷醇(Tria)等植物生长调节剂对镉胁迫耐受性的影响。在镉胁迫下,观察到生长、光合参数、矿质营养浓度降低,以及电解质渗漏、丙二醛和过氧化氢含量等氧化应激生物标志物增加。在两个品种中均观察到镉胁迫下脯氨酸含量和抗氧化活性的差异上调。有趣的是,与Kosi相比,Kushal叶片中的电解质渗漏、脂质过氧化、过氧化氢和镉浓度较低。在所有测试的植物生长调节剂中,SA被证明是提高两个品种镉胁迫耐受性的最佳选择,但Kushal的反应比Kosi更好。