茄丝核菌
几丁质酶
铁载体
叶圈
生物
假单胞菌
微生物学
荧光假单胞菌
铜绿假单胞菌
果胶酶
丝核菌
蛋白酶
根际
抗菌
园艺
细菌
酶
生物化学
遗传学
作者
Shamima Akter,Jugah Kadir,Abdul Shukor Juraimi,Halimi Mohd Saud
出处
期刊:PubMed
日期:2016-07-01
卷期号:37 (4): 597-602
被引量:4
摘要
The ability for biocontrol and plant growth promotion of three Pseudomonas bacterial isolates namely Pseudomonas fluorescens (UMB20), Pseudomonas aeruginosa (KMB25) and Pseudomonas asplenii (BMB42) obtained from rice plants was investigated. Fungal growth inhibition by the isolates ranged from 86.85 to 93.15% in volatile and 100% in diffusible metabolites test. Among the isolates, BMB42 showed fungal growth inhibition significantly in the volatile metabolite test. Isolates UMB20 and BMB42 were able to synthesis chitinase with chitinolytic indices of 13.66 and 13.50, respectively. In case of -1,3-glucanase, all the isolates showed activity to produce this enzyme at varied levels and isolate KMB25 showed significantly highest activity (53.53 ppm). Among the three isolates, KMB25 showed positive response to protease production and all of them were negative to pectinase and lipase and positive to the production of siderophore, and HCN, and were able to solubilize tricalcium phosphate. All the three bacterial isolates were capable of forming biofilm at different levels. Above results suggest that phylloplane Pseudomonas bacterial isolates have potential for antifungal activities and plant growth promotion.
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