Endophytic bacteria: an emerging tool for biological control bacterial leaf blight of paddy

• Published in: IOP conference series. Earth and environmental science 2021-02, Vol.653 (1), p.12080
• Main Authors: Prihatiningsih, N, Djatmiko, H A, Lestari, P
• Format: Article
• Language: English
• Subjects: Bacteria; Biological control; Blight; Endophytes; Infections; Leaf blight; Leaves; Plant growth; Plant growth promoters; Rice fields
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/653/1/012080

Endophytic bacteria were isolated from the root of paddy, not negative influence even could serve as plant growth promoter and pathogen biocontrol likely Xanthomonas oryzae pv. oryzae caused of bacterial leaf blight. The research was aimed to know the effectivity of controlling the endophytic bacteria against bacterial leaf blight of paddy. Methods of this research were suppressing effect to control bacterial leaf blight with seed dipping and soaking the endophytic bacterial suspension on surrounding plant in the polybag. Nine bacterial and one control were treatment in this assay and three replicates, arranged with randomize completely block design. Endophytic bacteria isolated from roots of paddy were evaluated for their capacity to suppress bacterial leaf blight intensity, infection rate and the effectivity control. The result showed that the endophytic bacteria could suppress the disease, and the isolate of SB1 (from Sumbang 1) is the best for antagonistic effect by 64.16% and 49.14% effectivity at screen house and paddy fields respectively. Infection rate of this disease was slow by 0.024 unit.day−1 and different with the control was 0.088 unit.day−1.