Bio - priming and Antagonistic Potentials of Senna obtusifolia Endophytic Bacteria

Inuwa, A .B; Abubakar, A. S; Ibrahim, M. A; Sulaiman, H. U

doi:10.47430/ujmr.1722.011

Authors

Inuwa, A .B Department of Microbiology, Faculty of Life Sciences, Bayero University Kano.
Abubakar, A. S Department of Agronomy, Faculty of Agriculture, Bayero University, Kano.
Ibrahim, M. A Department of Agronomy, Faculty of Agriculture, Bayero University, Kano.
Sulaiman, H. U Department of Microbiology, Faculty of Life Sciences, Bayero University Kano

DOI:

https://doi.org/10.47430/ujmr.1722.011

Keywords:

Senna obtusifolia, endophytic bacteria, bio-priming potentials, antagonistic potentials, Fusarium oxysporum

Abstract

Endophytic microorganisms have continued to gain prominence as rich sources of useful compounds such as plant growth promoting chemicals, bioactive compounds among others. The present study aimed at evaluating the tomato seeds bio-priming and, antagonistic potentials of endophytic bacteria isolated from Senna obtusifolia. Endophytic bacteria harboured in the roots and leaves of S. obstusifolia were isolated using a combination of cultural, biochemical and microscopic techniques. The isolates were evaluated for possible applications as growth- promoting agents of tomato seeds and also, as antagonistic agents to the notorious plant pathogenic fungus Fusarium oxysporum. Diverse genera of bacteria were isolated from the plant and these, prominently include, Bacillus spp; Staphylococcus aureus; Escherichia coli; Enterobacter spp; Rhizobium spp and Pseudomonas spp. Although, tomato seeds bio-primed with Enterobacter spp germinated before all others, the germination period (4 days) was statistically the same (P< 0.05) as that yielded by the control (4.5). Similarly, tomato seeds treated with S. aureus yielded the highest number of leaves (2.5) and, this was also statistically the same as that yielded by the control (P < 0.05). All the isolates used in the evaluation of antagonistic activity yielded significantly larger (P > 0.05) zone of inhibition than the control (11.0 mm). Among these, Bacillus spp yielded the largest zone (21.6 mm). The study revealed that S. obstusifolia harbours endophytic bacteria that could inhibit the growth of the plant pathogen, F. oxysporum.

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Bio - priming and Antagonistic Potentials of Senna obtusifolia Endophytic Bacteria

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