E-ISSN 2090-0503 | ISSN 1687-7497
 
2023, Vol: 19, Issue: 2
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Original Research 


GROWTH RESPONSE AND ULTRASTRUCTURAL CHANGES IN THE UNICELLULAR MICROALGA RAPHIDOCELIS SUBCAPITATA TO TOXICITY OF SOME DIVALENT METALS

Mervat H. Hussein.

Abstract
The toxic effect of Co (II), Mn (II), and Zn (II) (as chloride salts) on growth of Raphidocelis subcapitata (formally named; Selenastrum capricornutum) was assessed through a standard algal growth inhibition test performed in accordance with ISO guideline 8692 (ISO, 2004). The results showed that the alga was more sensitive for high concentrations of Co (II) and Zn (II) metals. Statistical results of EC50 were 0.75% for Co (II) and 0.89% for Zn (II). Mn (II) found to be less toxic than the other tested heavy metals. High concentration of Mn induced several changes in cell and ultrastructure at cytoplasm, chloroplast and membrane levels in try to overcome the induced stress and detoxification of Mn.

Key words: Raphidocelis subcapitata, heavy metals, ultrastructure, toxicity bioassay, microalgae


 
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Pubmed Style

Mervat H. Hussein. GROWTH RESPONSE AND ULTRASTRUCTURAL CHANGES IN THE UNICELLULAR MICROALGA RAPHIDOCELIS SUBCAPITATA TO TOXICITY OF SOME DIVALENT METALS. Egypt. J. Exp. Biol. (Bot.). 2009; 5(0): 175-180.

Web Style

Mervat H. Hussein. GROWTH RESPONSE AND ULTRASTRUCTURAL CHANGES IN THE UNICELLULAR MICROALGA RAPHIDOCELIS SUBCAPITATA TO TOXICITY OF SOME DIVALENT METALS. https://www.egyseb.net//?mno=187348 [Access: December 06, 2023].

AMA (American Medical Association) Style

Mervat H. Hussein. GROWTH RESPONSE AND ULTRASTRUCTURAL CHANGES IN THE UNICELLULAR MICROALGA RAPHIDOCELIS SUBCAPITATA TO TOXICITY OF SOME DIVALENT METALS. Egypt. J. Exp. Biol. (Bot.). 2009; 5(0): 175-180.


Vancouver/ICMJE Style

Mervat H. Hussein. GROWTH RESPONSE AND ULTRASTRUCTURAL CHANGES IN THE UNICELLULAR MICROALGA RAPHIDOCELIS SUBCAPITATA TO TOXICITY OF SOME DIVALENT METALS. Egypt. J. Exp. Biol. (Bot.). (2009), [cited December 06, 2023]; 5(0): 175-180.


Harvard Style

Mervat H. Hussein (2009) GROWTH RESPONSE AND ULTRASTRUCTURAL CHANGES IN THE UNICELLULAR MICROALGA RAPHIDOCELIS SUBCAPITATA TO TOXICITY OF SOME DIVALENT METALS. Egypt. J. Exp. Biol. (Bot.), 5 (0), 175-180.


Turabian Style

Mervat H. Hussein. 2009. GROWTH RESPONSE AND ULTRASTRUCTURAL CHANGES IN THE UNICELLULAR MICROALGA RAPHIDOCELIS SUBCAPITATA TO TOXICITY OF SOME DIVALENT METALS. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 5 (0), 175-180.


Chicago Style

Mervat H. Hussein. "GROWTH RESPONSE AND ULTRASTRUCTURAL CHANGES IN THE UNICELLULAR MICROALGA RAPHIDOCELIS SUBCAPITATA TO TOXICITY OF SOME DIVALENT METALS." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 5 (2009), 175-180.


MLA (The Modern Language Association) Style

Mervat H. Hussein. "GROWTH RESPONSE AND ULTRASTRUCTURAL CHANGES IN THE UNICELLULAR MICROALGA RAPHIDOCELIS SUBCAPITATA TO TOXICITY OF SOME DIVALENT METALS." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 5.0 (2009), 175-180. Print.


APA (American Psychological Association) Style

Mervat H. Hussein (2009) GROWTH RESPONSE AND ULTRASTRUCTURAL CHANGES IN THE UNICELLULAR MICROALGA RAPHIDOCELIS SUBCAPITATA TO TOXICITY OF SOME DIVALENT METALS. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 5 (0), 175-180.


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