The oil industry has inherent risks of spills or leaks due to natural or anthropogenic causes, which cause alterations in the soil and damage to the plant. An experiment was carried to investigate the effect of oil on the growth, biomass production, biosynthesis of crude protein of Leersia hexandra grass and the remove of oil from the soil. The results showed different responses by L. hexandra depending on the age, low concentrations of oil induced a significant increase in stolon length, in relative growth rate, in dry matter production and in the biosynthesis of crude protein. The same parameters decreased at high concentrations of oil. However, at the end of the evaluation period of 180 days, high concentrations of oil induced a significant increase in the number of young plants and secondary roots, the terminal third of the main root and root dry matter. The dose response curves had the shape of an inverted U, showing that at days 15, 45, 90 and 180, in stolon length, aerial dry matter production, crude protein (day 90) and young plants (days 45 and 90) exhibited a typical biphasic response. The increase in oil concentration correlated with increases in young plants, number of secondary roots, number of roots at the middle, terminal third and root dry matter. After 180 days exposure the rhizosphere of L. hexandra a total oil removal of oil of 76.7 ± 4 was achieved; 61.7, 51, 44.6, 38 and 52% in soils that initially contained 7.9, 54, 102, 126, 145 and 238 g oil.

中文翻译：

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石油诱导的Leersia hexandra Sw胁迫下的兴奋作用。在墨西哥湿热带的粘土土壤中用作植物修复剂。

石油工业具有自然或人为原因造成的溢漏或泄漏的固有风险，这些自然或人为原因会引起土壤变化并损害植物。进行了实验，以研究油对六味草生长，生物量生产，生物合成粗蛋白以及从土壤中去除油的影响。结果表明，六六旬花对年龄的反应不同，低浓度的油会导致茎长度，相对生长率，干物质生产和粗蛋白的生物合成显着增加。在高油浓度下，相同的参数会降低。但是，在180天的评估期结束时，高浓度的油诱导了幼株和次生根的数量显着增加，主根和根干物质的末端三分之一。剂量响应曲线呈倒U形，表明在第15、45、90和180天，茎长度，空中干物质产生，粗蛋白（第90天）和幼小植物（第45和90天）表现出了倒U型。典型的两相反应。含油量的增加与幼株的增加，次生根的数量，中部的根的数量，终末的第三根和根的干物质的增加相关。暴露180天后，六仙兰的根际总除油量为76.7±4。最初含7.9、54、102、126、145和238 g油的土壤中分别有61.7％，51％，44.6％，38％和52％。粗蛋白（第90天）和年轻植物（第45和90天）表现出典型的双相反应。含油量的增加与幼株的增加，次生根的数量，中部的根的数量，终末的第三根和根的干物质的增加相关。暴露180天后，六仙兰的根际总除油量为76.7±4。最初含7.9、54、102、126、145和238 g油的土壤中分别有61.7％，51％，44.6％，38％和52％。粗蛋白（第90天）和年轻植物（第45和90天）表现出典型的双相反应。含油量的增加与幼株的增加，次生根的数量，中部的根的数量，终末的第三根和根的干物质的增加相关。暴露180天后，六仙兰的根际总除油量为76.7±4。最初含7.9、54、102、126、145和238 g油的土壤中分别有61.7％，51％，44.6％，38％和52％。