The effects of oils on growth of freshwater phytoplankton

Dennington, V.N.; George, J.J.; Wyborn, C. H. E.

doi:10.1016/0013-9327(75)90105-6

Cited by 18 publications

(7 citation statements)

References 6 publications

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“…The reduction of growth by diesel has been considered in many other strains such as Scenedesmus quadricauda (Dennington et al, 1975) and Isochrysis sp. (Ansari et al, 1997).…”

Section: Discussionmentioning

confidence: 99%

Temporal alterations of Nannochloropsis salina (Eustigmatophyceae) grown under aqueous diesel fuel stress

et al. 2005

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The influence of an aqueous extract of diesel fuel was tested on growth of the marine eustigmatophyte Nannochloropsis (Monallantus) salina Hibberd. An increase in the concentration of the pollutant led to a decrease in growth rate as measured by optical density, with maximum effect observed (33% of control) at 100% aqueous pollutant. Spectrophotometric examination of cell viability (using Evan's blue dye) showed a significant negative effect of the diesel extract ( p ≤ 0.05, r = −0.92). Infrared spectra showed a slight change in the absorbance of contaminated compared with controlled cells. Proteome analysis (sodium dodecyl sulfate polyacrylamide gel electrophoresis -"SDS-PAGE") indicated that cell protein profiles depended on the pollutant concentration. Some of the resultant bands were characteristic to the pollutant concentration applied, indicating a distinct effect of the pollutant on the proteome structure. Iodine and toluidine blue dyes were applied using light microscopy to detect starch and mucilage, respectively. This indicated the presence of starch during all treatments, while the mucilage has been reduced. Transmission electron microscopy showed alterations to cell walls and membranes with different degrees of plasmolysis leading to a gradual increase in cell volume. However, the nucleus, the nucleolus and the pyrenoid remained unaffected. Similar results were obtained when the alga was cultured for 25 days in the 100% aqueous diesel extract indicating that long-term culture does not affect the degree of pollutant stress. Further, these cells recovered their normal appearance and characteristics within two days of being transferred to culture medium free of extract, indicating that N. salina shows a high tolerance to aqueous diesel fuel pollution.

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“…The reduction of growth by diesel has been considered in many other strains such as Scenedesmus quadricauda (Dennington et al, 1975) and Isochrysis sp. (Ansari et al, 1997).…”

Section: Discussionmentioning

confidence: 99%

Temporal alterations of Nannochloropsis salina (Eustigmatophyceae) grown under aqueous diesel fuel stress

et al. 2005

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“…Years of research on euglenophytes have shown that they are remarkably tolerant to various kinds of pollution with heavy metals such as Fe, Zn, Cu, Cd, Mn, Pb, Ni and Al (Albergoni et al, 1980;Tam et al, 1981;Fasulo et al, 1983;Walne and Kivic, 1990). They have also been found in waters polluted with diesel oil (Dennington et al, 1975), phenol (Pawlitz and Werner, 1978) and herbicides and insecticides (Poorman, 1973;Butler, 1977), and can survive in highly radioactive water (Lackley, 1968). Euglenophytes are also found living under very high salinity, for example, in Great Salt Lake (Jones, 1944).…”

Section: Discussionmentioning

confidence: 99%

Diversity of algae in a thallium and other heavy metals-polluted environment

Płachno

Wołowski

Augustynowicz

et al. 2015

Ann. Limnol. - Int. J. Lim.

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-Thallium (Tl) compounds are extremely toxic to living organisms, including algae, but there is a dearth of basic information regarding the mechanisms of action of Tl in the environment and its effects on algae in natural conditions. This study examined algal diversity in an environment highly polluted by Tl. Graniczna Woda stream is contaminated by Tl and other heavy metal compounds (Cd, Pb and Zn). There we found 66 algae taxa representing five phyla, among which euglenophytes prevailed. We found that euglenophytes, including Phacus species, can survive and can show high species diversity in the presence of high Tl concentrations. The fact that these small organisms covered only by a pellicle are able to thrive in such inhospitable habitat, shows a great plasticity of these organisms. It is unclear whether the algae of Graniczna Woda stream have a broad tolerance to harmful conditions or rather represent new varieties/clones that evolved in metal-contaminated waters and are adapted to this environment.

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“…Growth reduction by oil pollution, including diesel fuel, has been demonstrated in many algal species, e.g. Scenedesmus quadricauda (Dennington et al 1975), Isochrysis sp. (Ansari et al 1997).…”

Section: Nucleic Acid Estimationmentioning

confidence: 99%

An Investigation on principle biochemical components, photosynthetic pigments, nucleic acid and enzymatic activities of axenic culture of Scytonema sp. treated with two PAHs: Acenapthene and Fluoranthene

Patel¹,

J.I.²,

Tiwari³

2014

Int J Appl Sci Biotechnol

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The fresh water cyanobacteria Scytonema sp. was cultivated in a laboratory scale in the presence of various concentrations (2.5, 5, 10, 20 ppm) of two polycyclic hydrocarbons in order to assess the influence of the pollutant on the growth and certain physiological responses of the cyanobacteria. The algal cells were analyzed for chlorophyll a, carotenoids, phycobilliproteins, proteins, amino acid, nucliec acid, C/N ratio and elemental composition, carbohydrate and different enzymes at four days interval up to 16 days. According to our results, Scytonema sp. was significantly affected by the pollution with regard to the different physiological parameters examined, and this significance may be negative, positive or variable. The effect of the pollutant on carbohydrate, and the total amount of amino acids, proteins was negative, however, the composition of the phenol increase with raise in PAHs concentration. A positive effect of the pollutant on cellular C/N ratio was observed up to certain doses of PAHs.DOI: http://dx.doi.org/10.3126/ijasbt.v2i1.9784Int J Appl Sci Biotechnol, Vol. 2(1): 34-40

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The effects of oils on growth of freshwater phytoplankton

Cited by 18 publications

References 6 publications

Temporal alterations of Nannochloropsis salina (Eustigmatophyceae) grown under aqueous diesel fuel stress

Temporal alterations of Nannochloropsis salina (Eustigmatophyceae) grown under aqueous diesel fuel stress

Diversity of algae in a thallium and other heavy metals-polluted environment

An Investigation on principle biochemical components, photosynthetic pigments, nucleic acid and enzymatic activities of axenic culture of Scytonema sp. treated with two PAHs: Acenapthene and Fluoranthene

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