Abstract

The effects of aluminium (Al)-induced alterations on elongating radicles of Cicer arietinum L. were studied in relation to growth and biochemical markers of oxidative stress. Elongating radicles (c. 1 mm) were treated with 0–3 mM aluminium chloride (pH 4.5) for seven days at room temperature (26 ± 2°C). The results indicated that exposure to Al significantly inhibited radicle growth. This growth inhibition was accompanied by excessively high levels of reactive oxygen species (ROS) production. The levels of ROS were significantly positively correlated with Al concentration. Levels of lipid and protein oxidation products increased significantly with an increase in Al concentration, and were significantly positively correlated with ROS levels. On the other hand, Al stress significantly decreased the activities of selected enzymatic antioxidants. Collectively, the results suggest that Al rhizotoxicity in C. arietinum is partially mediated by oxidative stress brought about by excessive ROS production and reduced antioxidant scavenging activity.

中文翻译：

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铝cer菜中的铝根际毒性

摘要

研究了铝（Al）诱导的变化对Cicer arietinum L.伸长的胚根的影响，与氧化应激的生长和生化标记有关。伸长的胚根（约1毫米）用0 –在室温（26±2°C）下，将3 mM氯化铝（pH 4.5）放置7天。结果表明，暴露于铝显着抑制了胚根的生长。这种生长抑制伴随着过高水平的活性氧（ROS）产生。ROS水平与Al浓度呈显着正相关。脂质和蛋白质氧化产物的水平随Al浓度的增加而显着增加，并且与ROS水平显着正相关。另一方面，铝胁迫显着降低了所选酶促抗氧化剂的活性。总的来说，该结果表明铝假单胞菌对铝的根际毒性 一部分是由过多的ROS产生和降低的抗氧化剂清除活性所带来的氧化应激介导的。