Plant growth-promoting and antagonistic abilities of endophytic bacteria isolated from maize plant

Joint Webinar: Environmental Microbiology 2022 & 17^th International Conference on Virology, Emerging Diseases & vaccine & 6^th International Conference on Microbes and Beneficial Microbes

November 03, 2022 | Webinar

Abdulwasiu Sakariyau

Crescent University, Abeokuta, Nigeria

Scientific Tracks Abstracts: J Antimicrob Agents

Abstract :

This study was aimed at evaluating the plant growth-promoting potential and antagonistic ability of endophytic bacteria. Indigenous endophytic bacteria were isolated from surface-sterilized roots and leaves of maize plants. Isolates were screened for plant growth-promoting potential using hydrogen cyanide (HCN) production, phosphate solubilization, indole-3-acetic acid (IAA) production, and ammonia production assays. In vitro antagonistic assay was used to evaluate the antagonistic ability of the isolates against selected phytopathogens. Results showed that Bacillus subtilis, B. cereus, Pseudomonas aeruginosa, and Microbacterium sp. were HCN producers; all the isolates produced substantial IAA which ranged from 0.69-1.96 mg/ mL; Bacillus subtilis, P. aeruginosa and Microbacterium sp. solubilized phosphate with clear zones of 0.49mm, 0.41mm and 0.66mm respectively. Also, all the isolates except Staphylococcus epidermidis produced ammonia. Microbacterium sp. had the highest percentage of growth inhibition against Alternaria alternata (63.82%), while B. subtilis had the highest percentage of growth inhibition against Rhizoctonia solani (67.45%) and Fusarium oxysporum (71.26%). This study revealed that indigenous endophytic bacteria from maize plants have plant growth-promoting potential and could inhibit the growth of some fungal pathogens of the maize plants. References: 1. Abbasi M, Sharif S, Kazmi M, Sultan T, Aslam M (2011) Isolation of plant growth promoting rhizobacteria from wheat rhizosphere and their effect on improving growth, yield and nutrient uptake of plants. Plant Biosyst 145: 159-168 2. Akintokun AK, Taiwo MO (2016) Biocontrol Potentials of Individual Specie of Rhizobacteria and Their Consortium against Phytopathogenic Fusarium oxysporum and Rhizoctonia solani. Int J of Sci Res in Envi Sci 4(7): 219-227, 3. Bertani I, Abbruscato P, Pifanelli P, Subramoni S, Venturi V (2016) Rice bacterial endophytes: Isolation of a collection, identification of beneficial strains and microbiome analysis. Environ Microbiol 8: 388-398. 4. Do QT, (2022) Antagonistic activities of endophytic bacteria isolated from rice roots against the fungus Magnaporthe oryzae, a causal of rice blast disease. Egypt J Biol Pest Control 32, 69 5. Fouda A, Eid AM, Elsaied A, El-Belely EF, Barghoth MG, Azab E, Gobouri AA, Hassan SE (2021) Plant Growth-Promoting Endophytic Bacterial Community Inhabiting the Leaves of Pulicaria incisa (Lam.) DC Inherent to Arid Regions. Plants (Basel) 10(1): 76

Biography :

Abdulwasiu Sakariyau is an Environmental Microbiologist. His research interests include soil microbiology, plant-microbe interactions, Biodegradation of contaminated soil, and the discovery of biofertilizers and biocontrol agents. He is an alumnus of the University of Ilorin and the Federal University of Agriculture Abeokuta, Nigeria where he obtained a BSc (Microbiology) and MSc (Environmental Microbiology) respectively. He currently lectures at the Department of Biological Sciences, Crescent University Abeokuta, Nigeria. Abdulwasiu is a passionate academic with over 6 years of teaching and research experience