Isolation and Screening of Banana Pseudo-stem Degrading Bacteria

Vo, Xuyen Thi and Tran, Chau Minh Ngoc and Pham, Truyen Thanh and Nguyen, Nhut Nhu (2025) Isolation and Screening of Banana Pseudo-stem Degrading Bacteria. AGROKÉMIA ÉS TALAJTAN, 74 (2). pp. 62-78. ISSN 0002-1873

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Abstract

Banana is a popular agricultural product, the cultivation area and yield of bananas have rapidly increased in recent years. A large amount of post-harvest banana pseudo-stem are not collected and treated and are risk of environmental pollution and accumulation of phytopathogens. The purpose of this study was to isolate and screen bacteria degrading banana pseudostems. From 18 soil samples, 54 bacterial isolates were collected. Two screened strains of Bacillus sp. S3.1 and S6.1 were able to grow well in the selective medium containing 100% pseudo-stem extract and the ability to degrade 12.76% and 11.70% cellulose, respectively, in banana pseudo-stem. Both of Bacillus sp. S3.1 and S6.1 had the ability to simultaneously biosynthesize extracellular enzymes including amylase, cellulase, protease, and chitinase. In addition, these strains also showed antagonistic activity on fungal pathogens including Lasiodiplodia sp. GTC 2.4.1, Fusarium oxysporum GTC 2.2.8, and F. solani GTC 2.2.10 and could solubilize ZnO, ZnCO 3 , and Ca 3 (PO 4 ) 2 . The initial results showed the potential application of indigenous bacteria in decomposing banana pseudo-stem for production of organic fertilizer.

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