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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue Mar 2009, 29 (2)                                     Back


Ovarian development in Labeo dyocheilus (McClelland) during active

Effect of 2,4-Dichlorophenoxyacetic acid on growth, protein and chlorophyll-a content of Chlorella vulgaris and Spirulina platensis cells

Saadet Demirors Saygideger*1 and Ozlem Okkay2

1Department of Biology, Faculty of Arts and Sciences,University of Gaziantep - 27310, Gaziantep, Turkey

2Numune Hospital, Fatma Kemal Timucin Heart Center-01330, Adana, Turkey

(Received: May 15, 2006 ; Revised received: December 10, 2006 ; Re-revised received: January 23, 2007 ; Accepted: February 10, 2007)

Abstract: In this study, effect of different 2,4 -dichlorophenoxyacetic acid (2,4-D) concentrations (0.0, 9.10-5, 9.10-4, 9.10-3 and 9.10-2 mM) on growth rate, content of protein and chlorophyll-a in Chlorella vulgaris and Spirulina platensis cells was investigated. The most stimulatory effect on growth rate, protein and pigment ratio of C. vulgaris and S. platensis was observed at 9.10-4 mM concentrations of 2,4-D. The results show that low concentrations of 2,4-D have hormonal effect due to being a synthetic auxin. Cell number, protein and pigment rates were inhibited at 9.10-2 mM concentration in C. vulgaris. Such parameters were inhibited in S. platensis, both at 9.10-3 and 9.10-2 mM 2,4-D concentrations. This is due to herbicidal effect of high concentrations of 2,4-D. S. platensis was found to be more sensitive than S. vulgaris to 2,4-D applications. The use of algae as bio-indicators in herbicide contaminated fresh water habitats, was discussed.

Key words: Chlorella vulgaris, Spirulina platensis, Growth, Protein, Chlorophyll-a

PDF of full length paper is available with author (saygideger@gantep.edu.tr)

 

 

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