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首页> 外文期刊>Acta biologica Cracoviensia. Series botanica >ANALYSIS OF MICROBIOLOGICALLY STIMULATED BIOMASS OF SALIX VIMINALIS L. IN THE PRESENCE OF CD2+ UNDER IN VITRO CONDITIONS - IMPLICATIONS FOR PHYTOREMEDIATION
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ANALYSIS OF MICROBIOLOGICALLY STIMULATED BIOMASS OF SALIX VIMINALIS L. IN THE PRESENCE OF CD2+ UNDER IN VITRO CONDITIONS - IMPLICATIONS FOR PHYTOREMEDIATION

机译:体外条件下CD2 +存在下沙柳微生物刺激的生物量分析-对植物修复的启示。

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摘要

The efficiency of phytoremediation might be highly affected by plant-associated microorganisms, and understanding of the underlying mechanisms is still a great challenge. The primary aim of this study was to evaluate the efficiency parameters for Cd2+ accumulation in the biomass of willow (Salix viminalis) as well as to define the biochemical response of the host plant when it is inoculated with selected bacterial strains (Massilia sp. and Pseudomonas sp.) or saprophytic fungus (Clitocybe sp.) under controlled in vitro conditions. Inoculation of plants with bacterial strains affected the efficiency of phytoremediation process and was expressed as the quantity of accumulated Cd (Q), the bioaccumulation factor (BCF) and the translocation index (Ti); however, the effect was strain and plant organ specific. The level of hydrogen peroxide (H2O2), which is both an indicator of plant response to biological and/or abiotic environmental stress and a molecule involved in plant-microbial interactions, decreased under the influence of Cd2+ in uninoculated plants (plant growth was inhibited by Cd2+) and increased in the inoculated variants of plants growing in the presence of Cd2+ (microbiologically stimulated biomass). The saprophytic fungus Clitocybe sp. generally stimulated biomass and increased the level of H2O2 synthesis in all the investigated plant organs and variants of the experiment. We suggest that determination of phytoremediation efficiency, and biochemical response (H2O2) of the host plant under in vitro conditions can help in predicting the final effect of plant-microbial systems in further field trials.
机译:与植物相关的微生物可能会极大地影响植物修复的效率,而对潜在机制的理解仍然是一个巨大的挑战。这项研究的主要目的是评估柳树(Salix viminalis)生物量中Cd2 +积累的效率参数,以及确定当宿主植物接种选定的细菌菌株后(Massilia sp。和假单胞菌)的生化反应。或腐生真菌(Clitocybe sp。)。用细菌菌株接种植物会影响植物修复过程的效率,并表示为累积的Cd(Q),生物累积因子(BCF)和转运指数(Ti);但是,其效果是菌株和植物器官特异的。过氧化氢(H2O2)的水平既是植物对生物和/或非生物环境胁迫反应的指标,又是参与植物-微生物相互作用的分子,但在Cd2 +的影响下,过氧化氢的水平降低了Cd2 +)和在Cd2 +(微生物刺激的生物质)存在下生长的植物的接种变体中增加。腐生真菌Clitocybe sp。通常会刺激所有研究的植物器官和实验变体中的生物量并增加H2O2的合成水平。我们建议确定植物修复效率和宿主植物在体外条件下的生化响应(H2O2)可以帮助在进一步的田间试验中预测植物-微生物系统的最终效果。

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