The ability of blue green algal Chroococcus limneticus Lemmermann on the bioaccumulation of some heavy elements and their effect on shapes and contents of their cells
Abstract
The present study was condeced to know the ability of blue green algae Chroococcus limneticus to accumulate some heavy elements such as copper, lead, cadmium and nickel in its cells after exposure to these elements for 14 days.and noticed the changes that the algae suffered as a result of its development in circles containing different concentrations of these heavy elements (5,10,15,20) mg / L separately using the scanning electron microscopy technique. The results were showing that C. limneticus was able to accumulate these elements. The nickel element was the most accumulating element followed by copper, lead and cadmium. The concentration amount (0.57, 0.12, 0.05 and 0.02) percent of dry weight of all element respectively, the cadmium was the most harmful effect to the shape of the cell and its contents followed by the nickel element, while the effect of copper and lead was less severe when added separate.
References
قاسم ، ثائر إبراهيم ; حسن ، فكرت مجيد ; الحيال ، عذراء خليل ; ألنعيمي ، فالح عبد حسن وحسن ، إخلاص . (2004) . تأثير الكادميوم والرصاص في نمو الطحلب الأخضر المزرق Microcystis aeruginosa بوجود بعض المغذيات النباتية . المؤتمر الدولي الثاني للتنمية والبيئة في الوطن العربي 23-25 مارس – 2004 . مركز الدراسات والبحوث البيئة – جامعة أسيوط – مصر .
Al- Aarajy, M. (1996) Studies on the mass culture of some microalgae as food for fish larvae. Ph. D.Thesis, Univ. Basrah - Iraq, P : p 107.
Andersen, R. A. (2005) Algae culturing techniques. Physiol. Soc. Amer., Elsevier Academic Press,Pp: 578.
Awasthi, A.; Mamta, Q.; Das, N. and Debanghshu, N. (2005) Heavy metal stress on growth,photosynthesis and enzymatic activities of free and immobilized Chlorella vulgaris. Annals ofMicrobiol., 55(1): 1 - 7.
Bourrely, P. (1980) Les algaes deuu douce, initiation ala systematique, Soc. Naur. Edit. Boubee, Paris, (517, cited by Venkataraman and Becker, 1985).
Desikachary, T. (1959) Cyanophyta Edt. Indian Council of Agric. Res., New Delhi, 51
Dwivedi, S. (2012) Bioremediation of heavy metal by algae : current and future perspective. J. ofAdvance Laboratory Res. in Biol., 3(3): 229 - 233.
Fogg, G. E. (1975) Algal culture and phytoplankton ecology. 2nd ed. University of Wisconsin Press. Wisconsin, USA. Pp : 175.
Genter, R.B. ; Cherry , D.S.; Smith , E.P. and Cairns, J.(1987) Algal periphyton population and community chang from Zinc stress in stream Mesocosms. Hydrobiol ., 153 :261-275.
Lamas , E . M . ; Soares , M . J . and Oliveira , M . M . (1996) Effect of Cadmium on growth Euglena graeilis membrane lipids . Braz. J . Med. Biol. Res. , 29 (8) : 941-949 .
Moore, R.D. ; Richards, G. and Story, A. (2008) Electrical conductivity an indicator of water chemistry and hydrologic processes . Streamline watershed management Bulletin ,11 (2) : 25 -29 .
Munda , I. M. and Hudnik , V. (1986) Growth response of Fucus vesiculosus to heavy metals , singly and in dusal combination , as related to accumulation ,Botan . Mar .XXIX:401-412.
Pavasant, P. and Apiratikul, R. (2006) Sorption isotherm model for binary component sorption of copper , cadmium and lead ions usin dried green microalga , Caulerpa lentillifera . J. Chem. Technol. Biot., 119 : 135 – 145 .
Plafkin,J. L. and Babour . M.T.(1989) Rapid assessment protocols for use in streem and river . in Washington , P.C. ; Rossenberg, P.M. Reshceas.
Prescott, G. (1975) Algae of the western great lake area . Elion C . , Brown Co . Pub .Dugugue , Lowa , USA .
Stein, J. R. (1973) Hand book of phycological methods. Cambridge Unv. Press. Cambridge, U K.
Stockes , P.M.(1983) Mercury accumulation algae. A promising biological monitoring system for metal mercury in acid stressed lakes. Environ . Pollu. ( series) , 5:255-271.
Takamura, N.; Kasai, F. and Watanabe , M.M.(1989) Effect of Cu, Cd and Zn on photosynthesis of fresh water benthic algae. J. Applied phycology. , 1:39-52 .
Tomaselli, L.; Giovannetti, L. and Margheri, M. (1981) The mechanism of trichome breakage in Spirulina platensis and Spirulina maxima. Ann. Microbiol., 31: 27 - 33.
Weidman , V . ; Walne , P . and Tainor , F . (1984) A new technique for obtaining axenic culture of algae . Can. J . Bot ., 42 : 958 – 959 .
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