Tobacco brown spot disease

Isolation and Identification of Endophytic Bacterium B5 from Mentha haplocalyx Briq. and Its Biocontrol Mechanisms Against Alternaria alternata-Induced Tobacco Brown Spot

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Scientists discovered a beneficial bacterium called Bacillus velezensis in mint plants that can fight tobacco brown spot disease caused by a fungus. This bacterium works by producing natural antifungal compounds and enzymes that damage the fungus, and it helps boost the plant’s own defense systems. In greenhouse tests, this bacterial treatment was as effective as commercial chemical fungicides, offering farmers a safer, more environmentally friendly option for protecting their tobacco crops.

2-Nonanol produced by Bacillus velezensis EM-1: a new biocontrol agent against tobacco brown spot

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Researchers discovered that a beneficial bacterium called Bacillus velezensis produces a natural compound called 2-nonanol that effectively kills the fungus causing brown spots on tobacco leaves. This compound works by disrupting the fungus’s ability to obtain energy and handle stress. Testing on tobacco leaves showed that 2-nonanol could significantly reduce disease development. This discovery offers a promising environmentally-friendly alternative to chemical fungicides for protecting tobacco crops.

Disease: Tobacco brown spot disease

Isolation and Identification of Endophytic Bacterium B5 from Mentha haplocalyx Briq. and Its Biocontrol Mechanisms Against Alternaria alternata-Induced Tobacco Brown Spot

2-Nonanol produced by Bacillus velezensis EM-1: a new biocontrol agent against tobacco brown spot