Vestnik On-line
Orenburg State University january 19, 2018   RU/EN
Headings of Vestnik
Architecture
Biological sciences
Humanitarian sciences
Natural sciences
Historical sciences
Medical sciences
Sciences about Earth
Pedagogical sciences
Social sciences
Technical sciences
Physical-mathematical sciences
Philological sciences
Philosophical sciences
Chemical sciences
Economic sciences
Jurisprudence
Bibliography
Miscellaneous
Science events

Search
Лицензия Creative Commons

Galperina A.R. EFFECT OF HEAVY METALS ON SOME PHYSIOLOGICAL PARAMETERS OF FILAMENTOUS CYANOBACTERIA
The researched problem is relevant, since at present, heavy metals are the most widespread pollutants of soil and water environment. Cyanobacteria are promising objects for use in cleaning environmental objects from ions of heavy metals, since the ability to accumulate many elements and transform them into non-toxic form. It is made assessment of influence of heavy metals (cadmium, copper, lead and silver) on some morphological and physiological parameters of filamentous cyanobacteria. While higher concentrations of heavy metals affect the size, morphology, and ultrastructure of cells and physiological and biochemical characteristics of cyanobacteria. In experimental research revealed that the studied cyanobacteria are sensitive to the toxic effects of heavy metals. It is noted that the severity of the toxic effect decreases from cadmium to lead. It is shown that in the presence of heavy metals, cyanobacteria grow mainly on the surface of agar and undergo morphological changes: the emergence of atypical large cells (up to 4 μm — 2 μm), and cells with uneven edges; the formation of clusters of trichomes and disintegration of trichomes into fragments and individual cells. Noted adaptation of cyanobacteria to ions of lead. Revealed that low concentrations of lead ions stimulate the growth of biomass of cyanobacteria up to two times compared to control. It is found that all the tested concentrations of lead have a strong effect on the photosynthetic system of filamentous cyanobacteria, resulting in the decrease in the concentration of chlorophyll a and carotenoids with increasing content of lead in the environment.Key words: heavy metals, cyanobacteria, photosynthetic pigments.

References:

1. Budnikov, G. K. Heavy metals in environmental monitoring of water systems // Soros educational journal. — 1998. — No. 5. — S. 23-29.

2. Lukovnikova L. V. Metals in the environment, the problems of monitoring // Efferent therapy. -2004. — T. 10. — S. 74-79.

3. Shilov B. B. Toxicology of lead: a Handbook for physicians — St. Petersburg. : Publisher Politehnicheskogo University, 2010. — 28 S.

4. Bogachev, A. S. Sensitivity of cyanobacteria to the toxic action of salts of heavy metals. Abstract. dis. kand. Biol. Sciences. — Saint — Petersburg, 2011. — 24 p

5. Chernikov, A. A. Accumulation of copper and manganese in cells of the cyanobacterium Spirulina platensis. — Abstract Diss. Cand. Biol. Sciences. — Moscow, 2009. — 18C.

6. Vijayakumar, S. Potential applications of Cyanobacteria in industrial effluents — a review // Bioremediation & Biodegradation. — 2012. — Vol.3/ — Issue 6.— http://dx.doi.org/10.4172/2155-6199.1000154

7. Priyadarshani I., Rath B. Effect of heavy metals on cyanobacteria of Odisha coast // Journal of Microbiology and Biotechnology Research. — 2012. — 2(5). — p. 665-674.

8. Penfu Li, Stephen E. Harding, Zhili Liu Cyanobacterial exopolysaccharides: their nature and potential biotechnological applications // Biotechnology and Genetic Engineering Revies. — 2001/ — Vol.18. — P.375-405.

9. Shukla M.K., Tripathi R.D., Sharma N., Dwiweidi S., Mishra S., Singh R., Shukla O.P., Rai U.N. Responses of cyanobacterium Anabaena doliolum during nicel stress // Journal of Environmental Biology. — 2009. — 30 (5). — P. 871-876/

10. Morin, A. Empirical models predicting primary productivity from chlorophyll a and water temperature for stream periphyton and lake and ocean phytoplankton //Journal of the North American Benthological Society. — 1999. — P. 299 -307.

11. Brekhovskikh, A. A., Protective mechanisms of autotrophic cyanobacterium Nostoc muscorum against the toxic effects of cadmium ions. — Author’s abstract dis. Cand. Biol. Sciences. — Moscow, 2006. — 26C.

12. Bagaeva, T. V. Microbiological remediation of natural systems from heavy metals : proc. method. allowance — Kazan : Kazan state University, 2013. — 56 p

13. Gornostaeva, E. A. the Effect of copper ions and Nickel on soil cyanobacteria and cyanobacterial community. — Dissertation ... kand. Biol. Sciences. — M., 2015. — 189 p. — Bibliogr. : p. 160-189.

14. Vernon, L. P. Spectrophotometric determination of chlorophylls and pheophytins in plant extracts // Anal. Chemystry.— 1960. — Vol.32. — p. 1144-1150.

15. P. von Wettstein Chlorofyll — letal submiscipische Form und wechsel der Plastiden // Exp. Cell Res. — 1957. — V. 12, No4. — P. 4277 431.

© Электронное периодическое издание: ВЕСТНИК ОГУ on-line, ISSN on-line 1814-6465
Зарегистрировано в Федеральной службе по надзору в сфере связи, информационных технологий и массовых коммуникаций
Свидетельство о регистрации СМИ: Эл № ФС77-37678 от 29 сентября 2009 г.
Учредитель, издатель, редакция: Оренбургский государственный университет (ОГУ)
1999 - 2018 © CIT OSU