The metal accumulation potential and its physiological effects in Indian mustard plants (Brassica nigra L.) grown in soil irrigated with post methanated distillery effluent (25%, 50%, 75%, 100%, v/v) were studied after 30, 60 and 90 days after sowing. An increase in the chlorophyll and protein contents was recorded at the lower concentrations of post methanated distillery effluent (PMDE) at initial exposure periods followed by a decrease at higher concentrations of PMDE compared to their respective controls. An enhanced lipid peroxidation in tested plants was observed, which was evidenced by the increased malondialdehyde content in shoot, leaves and seeds at all the concentrations of PMDE and exposure periods compared to their respective controls. This study revealed that Indian mustard plants (B. nigra L.) are well adopted to tolerate and accumulate high quantities of trace elements due to increased level of antioxidants (cysteine and ascorbic acid) in root, shoot and leaves of the treated plants at all the concentrations and exposure periods except at 90 days, whereas a decrease was observed at 100% PMDE as compared to their respective controls.

译文

在30、60和90天后,研究了在甲烷化蒸馏废水 (25% 、50% 、75% 、100% 、v/v) 灌溉的土壤中生长的印度芥菜植物 (Brassica nigra L.) 中的金属积累潜力及其生理效应播种后。在初始暴露期间,甲烷化蒸馏后流出物 (PMDE) 的浓度较低时,叶绿素和蛋白质含量增加,随后与各自的对照相比,在较高浓度的PMDE下降低。在测试的植物中观察到脂质过氧化作用增强,这可以通过在所有PMDE浓度和暴露时间下与各自的对照相比,芽,叶和种子中的丙二醛含量增加来证明。这项研究表明,印度芥菜植物 (B. nigra L.) 被很好地用来耐受和积累大量的微量元素,因为在处理过的植物的根,芽和叶片中抗氧化剂 (半胱氨酸和抗坏血酸) 的含量增加了,除了90天的浓度和暴露时间,而与它们各自的对照相比,在100% PMDE处观察到降低。

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