Benha University

Aziza Nagah Mostafa Sayed Ahmed

Lecturer

Faculty of Science Botany

Kinetin and/or calcium affect growth of Phaseolus vulgaris L. plant grown under heavy metals stress

Mansoura journal of environmental sciences • 2017
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Publication Information
Authors Radwan R. Khalil1; Aziza N. Moustafa1; Fardous M. Bassuony1; Samia A. Haroun2
Keywords Antioxidant enzymes; Calcium; Kinetin; Lead; Nickel; Phaseolus vulgaris.
Journal Mansoura journal of environmental sciences
Publisher Mansoura Univeristy, Mansoura, Egypt
Volume 46
Issue 2
Pages 103-120
publication.type Local
Paper Link Open Link
Supplementary Materials Not Available
Abstract
Heavy metals stress is one of the major abiotic stresses that cause environmental pollution and hence indefinite hazards to living organisms in recent decades. The current study was conducted with the goal in the mind to clarify the ameliorative role of seed presoaking in kinetin (30 ppm ) and/or calcium chloride (40 mM) in counteracting the deteriorative effect of foliar application of nickel (2.5 mM) and/or lead (0.5mM) on the growth and some metabolic activities of Phaseolus vulgaris L. plant. Nickel and/or lead treatments significantly reduced the leaves area/plant, total pigments, soluble and insoluble sugars, amino-nitrogen, catalase enzyme, total nitrogen, potassium, calcium and magnesium contents. On the other hand, proline, amino-N, MDA, total phenols, SOD, POX, nickel and lead contents were significantly increased in response to heavy metal treatments. On contrary, seed presoaking in kinetin and calcium chloride alone or in combination significantly increased the leaves area/plant, total pigments, soluble and insoluble sugars, amino-nitrogen, catalase enzyme, total nitrogen, potassium, calcium and magnesium contents. Meanwhile, proline, MDA, total phenols, SOD, POX, nickel and lead contents were significantly decreased by kinetin and calcium chloride treatments. Kinetin and/or calcium chloride were found to be the most effective in enhancing the plant tolerance towards nickel and/or lead toxicity.
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