Isolation and Characterization of Heterotrophic Bacteria from Blue-Green Algae with Multiple Plant Growth Promoting Traits
Ibrahim, D., H. Ali, A., El Mokadem, M., Nour, E. (2023). Isolation and Characterization of Heterotrophic Bacteria from Blue-Green Algae with Multiple Plant Growth Promoting Traits. EKB Journal Management System, 66(8), 209-218. doi: 10.21608/ejchem.2022.168789.7090
Doaa Ibrahim; Afaf H. Ali; Mehrshan El Mokadem; Eman Nour. "Isolation and Characterization of Heterotrophic Bacteria from Blue-Green Algae with Multiple Plant Growth Promoting Traits". EKB Journal Management System, 66, 8, 2023, 209-218. doi: 10.21608/ejchem.2022.168789.7090
Ibrahim, D., H. Ali, A., El Mokadem, M., Nour, E. (2023). 'Isolation and Characterization of Heterotrophic Bacteria from Blue-Green Algae with Multiple Plant Growth Promoting Traits', EKB Journal Management System, 66(8), pp. 209-218. doi: 10.21608/ejchem.2022.168789.7090
Ibrahim, D., H. Ali, A., El Mokadem, M., Nour, E. Isolation and Characterization of Heterotrophic Bacteria from Blue-Green Algae with Multiple Plant Growth Promoting Traits. EKB Journal Management System, 2023; 66(8): 209-218. doi: 10.21608/ejchem.2022.168789.7090

Isolation and Characterization of Heterotrophic Bacteria from Blue-Green Algae with Multiple Plant Growth Promoting Traits

Egyptian Journal of Chemistry
Volume 66, Issue 8, August 2023, Page 209-218  XML PDF (999.21 K)
Document Type: Original Article
DOI: 10.21608/ejchem.2022.168789.7090
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Authors
Doaa Ibrahimorcid 1; Afaf H. Aliorcid 2; Mehrshan El Mokademorcid 2; Eman Nour email orcid 1
1Organic Crop Production Department, Faculty of Organic Agriculture, Heliopolis University for Sustainable Development, Cairo, Egypt
2Botany Department, Women's College, Ain Shams University, Cairo, Egypt
Abstract
Blue-green algae (BGA) are unique photosynthetic prokaryotes which are associated with heterotrophic bacteria. BGA together with the associated heterotrophic bacteria (AHB) play a distinct role in soil and plant development. Despite the high diversity of the BGA-AHB, little is known about their potential ecological role. Thus, the present study aimed to obtain and identify BGA and their cultivable AHB. Two nitrogen-fixing BGA were isolated from desert soil and identified as Anabaenopsis circularis strain AnHu and Nostoc sp. strain NoHu. Based on the colony morphology, 51 and 12 BGA-AHB isolates were obtained from AnHu and NoHu, respectively, and screened for plant growth-promoting activities (PGPAs). Ten promising BGA-AHB isolates that displayed multifunctional ability were further identified. The analysis revealed that the 6 and 4 identified AnHu- and NoHu-AHB isolates, were affiliated to 4 and 2 different phyla, respectively, indicating high diversity of cultivable BGA-AHB. Moreover, the analysis revealed sequence identity for some BGA-AHB with a newly described strain, such as Pseudomonas songnenensis. The identified BGA-AHB isolates showed identical sequences with NCBI strains known for their functionality as plant growth-promoters (PGPs) under harsh environmental conditions. Our results suggest that BGA-AHB are useful as an opulent source for PGPs in Egyptian agricultural arid soil.
Keywords
Blue-green algae (BGA); Associated heterotrophic bacteria (AHB); Anabaenopsis circularis; Nostoc sp; plant growth; arid area
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