Toxicity of copper and zinc to two strains of Scenedesmus acutus having different sensitivity to chromium
A Cr-tolerant strain of Scenedesmus acutus (Chlorophyceae) was cultured in the presence of different Cu 2+ or Zn 2+ concentrations to evaluate if it was also tolerant to these metals and consequently maintained unaltered its nutritional value for consumer organisms. The evaluation of tolerance was b...
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| Veröffentlicht in: | Environmental and experimental botany 1998-08, Vol.40 (1), p.59-66 |
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| creator | Morsi Abd-El-Monem, H Corradi, M.G Gorbi, G |
| description | A Cr-tolerant strain of
Scenedesmus acutus (Chlorophyceae) was cultured in the presence of different Cu
2+ or Zn
2+ concentrations to evaluate if it was also tolerant to these metals and consequently maintained unaltered its nutritional value for consumer organisms. The evaluation of tolerance was based on culture growth and recovery rates which were compared with those of the wild type. The evaluation of the nutritional value was based on quantitative determinations of dry mass and carbohydrate and protein content. In the presence of Cu concentrations that were toxic to the wild type, the Cr-tolerant strain grew better and, when transferred to metal-free culture medium, resumed growth more quickly. It also maintained fluorescence and unchanged protein levels. This suggests that the Cr-tolerant strain is also less sensitive to copper. However, no evidence of a lower sensitivity to zinc was found. |
| doi_str_mv | 10.1016/S0098-8472(98)00021-5 |
| format | Article |
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Scenedesmus acutus (Chlorophyceae) was cultured in the presence of different Cu
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Scenedesmus acutus (Chlorophyceae) was cultured in the presence of different Cu
2+ or Zn
2+ concentrations to evaluate if it was also tolerant to these metals and consequently maintained unaltered its nutritional value for consumer organisms. The evaluation of tolerance was based on culture growth and recovery rates which were compared with those of the wild type. The evaluation of the nutritional value was based on quantitative determinations of dry mass and carbohydrate and protein content. In the presence of Cu concentrations that were toxic to the wild type, the Cr-tolerant strain grew better and, when transferred to metal-free culture medium, resumed growth more quickly. It also maintained fluorescence and unchanged protein levels. This suggests that the Cr-tolerant strain is also less sensitive to copper. However, no evidence of a lower sensitivity to zinc was found.</description><subject>Agronomy. Soil science and plant productions</subject><subject>Algae</subject><subject>Biological and medical sciences</subject><subject>biological resistance</subject><subject>carbohydrates</subject><subject>Chromium</subject><subject>Co-tolerance</subject><subject>Copper</subject><subject>Deficiencies. Phytotoxicity of elements. Salinity</subject><subject>dry matter</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General agronomy. Plant production</subject><subject>growth</subject><subject>metal ions</subject><subject>metal tolerance</subject><subject>nutritive value</subject><subject>Plant cytology, morphology, systematics, chorology and evolution</subject><subject>protein content</subject><subject>Scenedesmus</subject><subject>Scenedesmus acutus</subject><subject>Soil-plant relationships. Soil fertility. Fertilization. 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Soil science and plant productions</topic><topic>Algae</topic><topic>Biological and medical sciences</topic><topic>biological resistance</topic><topic>carbohydrates</topic><topic>Chromium</topic><topic>Co-tolerance</topic><topic>Copper</topic><topic>Deficiencies. Phytotoxicity of elements. Salinity</topic><topic>dry matter</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General agronomy. Plant production</topic><topic>growth</topic><topic>metal ions</topic><topic>metal tolerance</topic><topic>nutritive value</topic><topic>Plant cytology, morphology, systematics, chorology and evolution</topic><topic>protein content</topic><topic>Scenedesmus</topic><topic>Scenedesmus acutus</topic><topic>Soil-plant relationships. Soil fertility. Fertilization. Amendments</topic><topic>Thallophyta</topic><topic>toxicity</topic><topic>Zinc</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Morsi Abd-El-Monem, H</creatorcontrib><creatorcontrib>Corradi, M.G</creatorcontrib><creatorcontrib>Gorbi, G</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>Pollution Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><jtitle>Environmental and experimental botany</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Morsi Abd-El-Monem, H</au><au>Corradi, M.G</au><au>Gorbi, G</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Toxicity of copper and zinc to two strains of Scenedesmus acutus having different sensitivity to chromium</atitle><jtitle>Environmental and experimental botany</jtitle><date>1998-08-01</date><risdate>1998</risdate><volume>40</volume><issue>1</issue><spage>59</spage><epage>66</epage><pages>59-66</pages><issn>0098-8472</issn><eissn>1873-7307</eissn><coden>EEBODM</coden><abstract>A Cr-tolerant strain of
Scenedesmus acutus (Chlorophyceae) was cultured in the presence of different Cu
2+ or Zn
2+ concentrations to evaluate if it was also tolerant to these metals and consequently maintained unaltered its nutritional value for consumer organisms. The evaluation of tolerance was based on culture growth and recovery rates which were compared with those of the wild type. The evaluation of the nutritional value was based on quantitative determinations of dry mass and carbohydrate and protein content. In the presence of Cu concentrations that were toxic to the wild type, the Cr-tolerant strain grew better and, when transferred to metal-free culture medium, resumed growth more quickly. It also maintained fluorescence and unchanged protein levels. This suggests that the Cr-tolerant strain is also less sensitive to copper. However, no evidence of a lower sensitivity to zinc was found.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/S0098-8472(98)00021-5</doi><tpages>8</tpages></addata></record> |
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| ispartof | Environmental and experimental botany, 1998-08, Vol.40 (1), p.59-66 |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | Agronomy. Soil science and plant productions Algae Biological and medical sciences biological resistance carbohydrates Chromium Co-tolerance Copper Deficiencies. Phytotoxicity of elements. Salinity dry matter Fundamental and applied biological sciences. Psychology General agronomy. Plant production growth metal ions metal tolerance nutritive value Plant cytology, morphology, systematics, chorology and evolution protein content Scenedesmus Scenedesmus acutus Soil-plant relationships. Soil fertility. Fertilization. Amendments Thallophyta toxicity Zinc |
| title | Toxicity of copper and zinc to two strains of Scenedesmus acutus having different sensitivity to chromium |
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