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鞘丝藻属DE2011和栅藻属DE2009在受污染自然环境中作为铬的生物指示物和固定剂的作用。

Role of Geitlerinema sp. DE2011 and Scenedesmus sp. DE2009 as Bioindicators and Immobilizers of Chromium in a Contaminated Natural Environment.

作者信息

Millach Laia, Solé Antoni, Esteve Isabel

机构信息

Departament de Genètica i Microbiologia, Facultat de Biociències, Universitat Autònoma de Barcelona, Bellaterra, Cerdanyola del Vallès, 08193 Barcelona, Spain.

出版信息

Biomed Res Int. 2015;2015:519769. doi: 10.1155/2015/519769. Epub 2015 Jun 17.

DOI:10.1155/2015/519769
PMID:26167488
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4488086/
Abstract

The aim of this work was to study the potential of the two phototrophic microorganisms, both isolated from Ebro Delta microbial mats, to be used as bioindicators and immobilizers of chromium. The results obtained indicated that (i) the Minimum Metal Concentration (MMC) significantly affecting Chlorophyll a intensity in Geitlerinema sp. DE2011 and Scenedesmus sp. DE2009 was 0.25 µM and 0.75 µM, respectively, these values being lower than those established by current legislation, and (ii) Scenedesmus sp. DE2009 was able to immobilize chromium externally in extracellular polymeric substances (EPS) and intracellularly in polyphosphate (PP) inclusions. Additionally, this microorganism maintained high viability, including at 500 µM. Based on these results, we postulate that Geitlerinema sp. DE2011 and Scenedesmus sp. DE2009 are good chromium-indicators of cytotoxicity and, further, that Scenedesmus sp. DE2009 plays an important role in immobilizing this metal in a contaminated natural environment.

摘要

这项工作的目的是研究两种均从埃布罗三角洲微生物垫中分离出的光合微生物作为铬的生物指示物和固定剂的潜力。所得结果表明：（i）显著影响Geitlerinema sp. DE2011和Scenedesmus sp. DE2009中叶绿素a强度的最低金属浓度（MMC）分别为0.25 μM和0.75 μM，这些值低于现行法规规定的值；（ii）Scenedesmus sp. DE2009能够在细胞外聚合物（EPS）中外部固定铬，并在多磷酸盐（PP）内含物中内部固定铬。此外, 这种微生物保持了高活力，包括在500 μM时。基于这些结果，我们推测Geitlerinema sp. DE2011和Scenedesmus sp. DE2009是良好的细胞毒性铬指示物，此外，Scenedesmus sp. DE2009在受污染的自然环境中固定这种金属方面发挥着重要作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7315/4488086/765950461613/BMRI2015-519769.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7315/4488086/275f50902a0d/BMRI2015-519769.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7315/4488086/28e26c08665c/BMRI2015-519769.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7315/4488086/72ee197f9632/BMRI2015-519769.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7315/4488086/5796077ae5be/BMRI2015-519769.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7315/4488086/765950461613/BMRI2015-519769.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7315/4488086/275f50902a0d/BMRI2015-519769.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7315/4488086/28e26c08665c/BMRI2015-519769.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7315/4488086/72ee197f9632/BMRI2015-519769.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7315/4488086/5796077ae5be/BMRI2015-519769.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7315/4488086/765950461613/BMRI2015-519769.005.jpg

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