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首页> 外文期刊>Acta Physiologiae Plantarum >The influence of the association of barley plants with petroleum degrading bacteria on the hormone content, growth and photosynthesis of barley plants grown in the oil-contaminated soil
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The influence of the association of barley plants with petroleum degrading bacteria on the hormone content, growth and photosynthesis of barley plants grown in the oil-contaminated soil

机译：大麦植株与石油降解菌的关联对油污土壤中生长的大麦植株激素含量、生长和光合作用的影响

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摘要

Maintenance of active plant growth is important for successful phytoremediation of soil contaminated with petroleum oil products. Strains of oil-degrading bacteria introduced into rhizosphere were found to reduce the extent of plant growth inhibition resulting from petroleum stress. The effect was due to combining the capacity for petroleum degradation with promotion of plant growth by bacterial phytohormones. The purpose of this work was to compare the relative importance of these mechanisms in supporting the growth of barley plants against the background of oil pollution of the soil. Plants were treated with bacterial suspensions of four strains capable of petroleum degradation and production of indole acetic acid (IAA, plant hormone of the auxin class). The strains were shown to differ in their ability to support plant growth under conditions of oil pollution. Introduction of bacteria into soil accelerated petroleum degradation. Nevertheless, oil degradation was not the only mechanism behind promotion of plant growth, since the strain with the lowest ability to degrade oil was characterized by a relatively high growth-stimulating activity. The highest ability to stimulate plant growth was detected in the case of strains, which were the most effective in increasing the concentration of IAA in plants and decreasing the stress-induced accumulation of abscisic acid (ABA).
机译：维持活跃的植物生长对于成功修复被石油产品污染的土壤非常重要。研究发现，将油降解细菌菌株引入根际可降低石油胁迫对植物生长的抑制程度。这种效果是由于将石油降解能力与细菌植物激素促进植物生长相结合。这项工作的目的是比较这些机制在土壤油污染背景下支持大麦植物生长的相对重要性。用能够降解石油和产生吲哚乙酸（IAA，生长素类植物激素）的四种菌株的细菌悬浮液处理植物。这些菌株在油污染条件下支持植物生长的能力不同。将细菌引入土壤加速了石油降解。然而，油降解并不是促进植物生长的唯一机制，因为降解油脂能力最低的菌株具有相对较高的生长刺激活性。菌株对植物生长的刺激能力最高，在提高植物体内IAA浓度和减少胁迫诱导的脱落酸（ABA）积累方面最有效。

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