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113990

PHYSIOLOGICAL IMPACTS OF DICHLOROPHYNYLDIMETHYL UREA ON SOME GREEN ALGAE SPECIES

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Last updated: 04 Jan 2025

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Abstract

Three algae species belonging to Chlorophyta; i.e Chlorella sp < /em>., Scenedesmus sp < /em>. and Haematococcus pluvialis, were incubated under different concentrations of the photosynthetic inhibitor dichlorophynyldimethylurea (DCMU). Algae were treated with 0, 1, 2, 4 and 8x10-5M DCMU added to N8 macronutrient solution containing ammonium acetate instead of potassium nitrate. The measured parameters were optical density, cell count, medium reaction (pH), total chlorophyll, total carotenoids, crude protein and lipids as ether extract. Results showed that DCMU inhibited growth as optical density for both Scenedesmus sp. and Chlorella sp. H. pluvialis exhibited more resistance against all given concentrations. Chlorophyll reached the maximum with lower and moderate levels of DCMU with Scenedesmus sp. and Chlorella sp. As for H. pluvialis, all used concentrations inhibited chlorophyll accumulation. A different manner was observed on carotenoids accumulation, where the decline of chlorophyll was associated with the decomposition of crude protein and rise in carotenoids and lipids content especially with H. pluvialis. 

DOI

10.21608/egyjs.2004.113990

Keywords

green algae, chlorophyta, DCMU, optical density, cell count, total chlorophyll, carotenoids and biochemical metabolites

Authors

First Name

Abo El-Khair

Last Name

El-Sayed

MiddleName

B.

Affiliation

Fertilization Technology Department, National Research Centre

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City

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Orcid

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First Name

Mohamed

Last Name

El-Fouly

MiddleName

M.

Affiliation

Fertilization Technology Department, National Research Centre

Email

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City

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Orcid

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First Name

Abd El-Wahab

Last Name

Abdel-Maguid

MiddleName

A.

Affiliation

Fertilization Technology Department, National Research Centre

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City

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Orcid

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Volume

5

Article Issue

1

Related Issue

17367

Issue Date

2004-12-01

Receive Date

2004-07-20

Publish Date

2004-12-28

Page Start

97

Page End

105

Print ISSN

1110-8649

Online ISSN

2735-3826

Article File

EGYJS_Volume 5_Issue 1_Pages 97-105.pdf

PDF . 306.0kB

Link

https://egyjs.journals.ekb.eg/article_113990.html

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https://egyjs.journals.ekb.eg/service?article_code=113990

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7

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Original Article

Type Code

1,365

Publication Type

Journal

Publication Title

Egyptian Journal of Phycology

Publication Link

https://egyjs.journals.ekb.eg/

MainTitle

PHYSIOLOGICAL IMPACTS OF DICHLOROPHYNYLDIMETHYL UREA ON SOME GREEN ALGAE SPECIES

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Article

Created At

23 Jan 2023