PJB-2021-502
Enhancement of defensive capability of okra plant (Abelmoschus esculentus (L.) Moench) against root rot disease by the endophytic fluorescent pseudomonas and seaweed soil amendment
Irshad Ahmed, Rawish Zehra, Sami-Ur-Rahman, Shumaila Moin, Syed Muhammad Enamullah and Syed Ehteshamul-Haque
Abstract
Management of plant root diseases by the application of seaweed and endophytic bacteria, particularly fluorescent Pseudomonas, is capturing the interest of plant scientists. In this study, the effect of seaweed soil amendment alone or mixed with endophytic fluorescent Pseudomonas (EFP-47) in reducing the root infecting fungi of okra was evaluated in pots and field plot experiments. The experiments conducted in 2019 and repeated in 2020, showed that soil amendment with seaweed, Stokeyia indica, and Ulva fasciata alone or mixed with fluorescent Pseudomonas significantly suppressed Macrophomina phaseolina, Fusarium solani, and Rhizoctonia solani on okra roots compared to untreated control plants. In general U. fasciata + EFP-47 treated plants showed maximum inhibition of root rotting fungi. In addition, seaweed and Pseudomonas (EFP-47) applications increased the plant height and fresh weight in pots as well as in field plot experiments. Seaweed used alone or mixed with Pseudomonas (EFP-47) ameliorated the activity of plant resistance markers like salicylic acid and polyphenolic contents, improved antioxidant activity and phosphorus uptake in plants. It is suggested that endophytic fluorescent Pseudomonas and seaweed could be used for the management of root diseases of okra
To Cite this article:
Ahmed, I., R. Zehra, S.U. Rahman, S. Moin, S.M. Enamullah and S.E. Haque. 2023. Enhancement of defensive capability of okra plant (Abelmoschus esculentus (L.) Moench) against root rot disease by the endophytic fluorescent pseudomonas and seaweed soil amendment. Pak. J. Bot., 55(3): DOI: http://dx.doi.org/10.30848/PJB2023-3(38)
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