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


Growth, Enzymes and Microbial Activities of Two Leguminous Plants Grown on Soils Contaminated with Heavy Metals

samir Haddad, Marwa MR Mohmoud Ahmed, Mohyeldeen Abd El-Azeim.

Abstract
Soil pollution with heavy metals is an important environmental matter with negative impact on agriculture and human health. This work was investigated to evaluate the effects of different concentrations of three heavy metals (Cd, Mn and Zn) on plant growth, nodulation, N uptake, some hydrolases enzymes and total fungal and bacterial population by two leguminous crops grown on sandy and clay soils. Results showed that the determined growth parameters (plant height, fresh and dry weight, nodulation, and N-uptake) markedly reduced with elevating heavy metal concentration in the soil. In general, among the lowest concentration (LC10) values, Cd was the most effective metal to cause 10% reduction in each growth parameter. At 250 mg kg-1 soil, asparaginase, glutaminase, and arginase activities were inhibited by heavy metals. The percentage of enzyme inhibition increased by metal contamination, while less reduction was obtained under rhizobium inoculation. Total counts of bacteria and fungi were greater in soils inoculated than non-inoculated with rhizobium. Using plant growth promoter microbes such as rhizobium caused enhancement in the plant growth. Overall, the toxic effects of the three studied heavy metals on two leguminous plants and on the soil microbial activities can be arranged as follows: Cd > Zn> Mn.

Key words: Keywords: Heavy metals, Nodulation, Soybean, Egyptian clover, enzyme activity, microbial population.


 
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How to Cite this Article
Pubmed Style

samir Haddad, Marwa MR Mohmoud Ahmed, Mohyeldeen Abd El-Azeim. Growth, Enzymes and Microbial Activities of Two Leguminous Plants Grown on Soils Contaminated with Heavy Metals. Egypt. J. Exp. Biol. (Bot.). 2017; 13(1): 69-80. doi:10.5455/egyjebb.20170306024053

Web Style

samir Haddad, Marwa MR Mohmoud Ahmed, Mohyeldeen Abd El-Azeim. Growth, Enzymes and Microbial Activities of Two Leguminous Plants Grown on Soils Contaminated with Heavy Metals. https://www.egyseb.net//?mno=259722 [Access: December 05, 2023]. doi:10.5455/egyjebb.20170306024053

AMA (American Medical Association) Style

samir Haddad, Marwa MR Mohmoud Ahmed, Mohyeldeen Abd El-Azeim. Growth, Enzymes and Microbial Activities of Two Leguminous Plants Grown on Soils Contaminated with Heavy Metals. Egypt. J. Exp. Biol. (Bot.). 2017; 13(1): 69-80. doi:10.5455/egyjebb.20170306024053


Vancouver/ICMJE Style

samir Haddad, Marwa MR Mohmoud Ahmed, Mohyeldeen Abd El-Azeim. Growth, Enzymes and Microbial Activities of Two Leguminous Plants Grown on Soils Contaminated with Heavy Metals. Egypt. J. Exp. Biol. (Bot.). (2017), [cited December 05, 2023]; 13(1): 69-80. doi:10.5455/egyjebb.20170306024053


Harvard Style

samir Haddad, Marwa MR Mohmoud Ahmed, Mohyeldeen Abd El-Azeim (2017) Growth, Enzymes and Microbial Activities of Two Leguminous Plants Grown on Soils Contaminated with Heavy Metals. Egypt. J. Exp. Biol. (Bot.), 13 (1), 69-80. doi:10.5455/egyjebb.20170306024053


Turabian Style

samir Haddad, Marwa MR Mohmoud Ahmed, Mohyeldeen Abd El-Azeim. 2017. Growth, Enzymes and Microbial Activities of Two Leguminous Plants Grown on Soils Contaminated with Heavy Metals. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 13 (1), 69-80. doi:10.5455/egyjebb.20170306024053


Chicago Style

samir Haddad, Marwa MR Mohmoud Ahmed, Mohyeldeen Abd El-Azeim. "Growth, Enzymes and Microbial Activities of Two Leguminous Plants Grown on Soils Contaminated with Heavy Metals." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 13 (2017), 69-80. doi:10.5455/egyjebb.20170306024053


MLA (The Modern Language Association) Style

samir Haddad, Marwa MR Mohmoud Ahmed, Mohyeldeen Abd El-Azeim. "Growth, Enzymes and Microbial Activities of Two Leguminous Plants Grown on Soils Contaminated with Heavy Metals." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 13.1 (2017), 69-80. Print. doi:10.5455/egyjebb.20170306024053


APA (American Psychological Association) Style

samir Haddad, Marwa MR Mohmoud Ahmed, Mohyeldeen Abd El-Azeim (2017) Growth, Enzymes and Microbial Activities of Two Leguminous Plants Grown on Soils Contaminated with Heavy Metals. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 13 (1), 69-80. doi:10.5455/egyjebb.20170306024053


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