In this research, numerous plant growth promoting rhizobacteria were examined, aiming to enhance plant growth. The study involved the collection of native rhizobacterial isolates from the rhizosphere of various wild plant species in Qatar. These isolates underwent in-vitro evaluation to assess their antagonistic potential against Fusarium oxysporum and Botrytis cinerea using the dual culture technique. The results indicated significant growth inhibition, reaching up to 50%. Subsequent in-vivo evaluations were conducted under greenhouse conditions, revealing that local strains exhibited significant growth-promoting effects. Further in-vivo tests were carried out using the Hoagland medium to assess the rhizobacteria’s efficacy in the presence of phytopathogens. The strains not only aided tomato seedlings in overcoming diseases but also increased both above and belowground biomasses compared to the control, demonstrating significant results (p ≤ 0.05). Moreover, the selected strains were subjected to various characterization tests, revealing their ability to directly and indirectly promote plant growth. It was found that the isolates were capable of the producing Indole-3-acetic acid (IAA), hydrogen cyanide (HCN), hydrolytic enzymes, ACC deaminase, ammonia (NH3), some strains displayed phosphate solubilization capabilities and most were capable of growing under saline conditions (5-10% NaCl). In summary, this study highlighted the valuable traits possessed by indigenous rhizobacterial isolates from arid regions. These traits position them as promising candidates for bio-control agents and bio-fertilizers in agricultural applications, showcasing their potential for sustainable and enhanced crop cultivation.
Biography
Amina BiBi is a dedicated Ph.D. candidate pursuing her doctoral studies at Qatar University within the Department of Biological and Environmental Sciences. Her academic journey commenced with a bachelor’s degree in environmental sciences, which she successfully completed in 2016, showcasing her passion for environmental studies. Eager to delve deeper into her field, Amina continued her education at Qatar University and achieved her master’s degree in environmental sciences in 2018.
During her master’s studies, Amina worked on her thesis titled “Screening and Evaluation of Rhizobacteria Isolated from Qatari Soil against Common Plant Pathogens.” This research highlighted her keen interest in exploring innovative solutions in the field of environmental sciences, specifically focusing on plant-pathogen interactions and biocontrol strategies.
Currently, as a Ph.D. candidate, Amina’s research pursuits have expanded to the domain of sustainable water reuse. Her doctoral research centers on the development and application of graphene oxide nanocomposites for the remediation of phenol-contaminated wastewater. Amina has scholarly contributions, publishing several scientific research and review papers at high impact factor journals in the field of water treatment.