Nehad, F., A., A. G, A., Hanan, A., H., Hala, A., K. (2017). ALLELOPATHIC ACTIVITY OF SOME DESERT PLANTS AGAINST PLANT PATHOGENIC BACTERIA AND NEMATODES. test, 37(2), 15-35. doi: 10.21608/jes.2017.19465
Abdel Aziz, Nehad, F.; Abdel-Rahman A. G; Hashem Hanan, A.; Kassem, Hala, A.. "ALLELOPATHIC ACTIVITY OF SOME DESERT PLANTS AGAINST PLANT PATHOGENIC BACTERIA AND NEMATODES". test, 37, 2, 2017, 15-35. doi: 10.21608/jes.2017.19465
Nehad, F., A., A. G, A., Hanan, A., H., Hala, A., K. (2017). 'ALLELOPATHIC ACTIVITY OF SOME DESERT PLANTS AGAINST PLANT PATHOGENIC BACTERIA AND NEMATODES', test, 37(2), pp. 15-35. doi: 10.21608/jes.2017.19465
Nehad, F., A., A. G, A., Hanan, A., H., Hala, A., K. ALLELOPATHIC ACTIVITY OF SOME DESERT PLANTS AGAINST PLANT PATHOGENIC BACTERIA AND NEMATODES. test, 2017; 37(2): 15-35. doi: 10.21608/jes.2017.19465

ALLELOPATHIC ACTIVITY OF SOME DESERT PLANTS AGAINST PLANT PATHOGENIC BACTERIA AND NEMATODES

Journal of Environmental Science
Article 2, Volume 37, Issue 2, March 2017, Pages 15-35    PDF (498.92 K)
Document Type: Original Article
DOI: 10.21608/jes.2017.19465
Authors
Abdel Aziz, Nehad, F.1; Abdel-Rahman A. G1; Hashem Hanan, A.2; Kassem, Hala, A.3
1Plant Protection Department, Desert Research Center, El- Matariya, Cairo
2Botany Departement, Faculty of Science, Ain Shams University
3Environmental Basic Sciences Departement, Institute of Environmental Studies and Research, Ain Shams University.
Abstract
The extensive use of chemicals in plant protection has given rise to concerns about pesticide residues in the environment and to the development of pesticide-resistance by any organisms. Allelopathic plants offer better alternative for this purpose due to being cost-saving, eco-friendly, easy to use, efficient and safe. So, the present work was carried out to evaluate the allelopathic effect of three desert plants (Artemisia judaica, Asphodelus microcarpus, Solanum nigrum) on root knot nematode (Meloidogyne incognita) and three gram negative pathogenic bacterial strains (Erwinia carotovora, Xanthomonas campestris and Ralestonia solanacearum) using root exudates and leaf extracts of each plant with different concentrations. Under laboratory conditions, the data indicated that the three plants contain nematicidal compounds; the inhibitory effect was proportional to the concentrations used. Artemisia judaica extract showed the highest level (100%) of nematicidal activity and indicated good antibacterial activities against all the tested bacterial strains also recorded the best result of minimum inhibitory concentration followed by A.microcarpus root exudate. While the root exudate of A.judaica, S. nigrum had no antibacterial activity, leaf extracts of S. nigrum had weak antibacterial activity. Aqueous leaf extracts of A.judaica appears to be attractive for the development of nematicidal and bactericidal bio- pesticides.
Keywords
Allelopathy; Desert plants; Leaf extracts; root exudates; Root knot Nematode; Bacteria
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