Biological Control of Fusarium sp. NBRI-PMSF12 Pathogenic to Cultivated Betelvine by Bacillus sp. NBRI-W9, a Potential Biological Control Agent

An Insight into the Endophytic Bacterial Community of Tomato after Spray Application of Propiconazole and Bacillus subtilis Strain NBRI-W9

“…The marginal impact of PCZ on W9 ( in vitro ) indicates that the apparent reduction of the endophyte population observed in the combined treatment was due to the loss or retarded growth of both W9 and the natural endophytes. The strain NBRI-W9 is itself a putative endophyte of Piper chaba ( 22 ), and as expected of a true endophyte, it ought to be noninvasive; that is, it should not be hyperproliferating and interfering with the native microflora, which are characteristics of a pathogen. Based on the diversity indices, we may argue that NBRI-W9 did not show any advantageous growth over the native endophytes.…”

“…(iii) Bacterial cultures. Bacillus subtilis NBRI-W9 (W9), MTCC-25374, was used as a biocontrol agent ( 22 ), and P. syringae pv. maculicola ES4326 was used as the virulent pathogen in tomato.…”

“…Since the use of biofungicides is increasing gradually in the global market and is estimated to reach 47,000 ton/year by 2024 ( 21 ), their impact on plant endophytes is also of importance, as they are the drivers of the future integrated and/or chemical-free management of fungal pathogens. Therefore, Bacillus subtilis strain NBRI-W9, known for its biocontrol and plant-growth-promoting activity ( 22 ), was used in the present study as the positive control.…”

An Endophytic Strain of Bacillus amyloliquefaciens Suppresses Fusarium oxysporum Infection of Chinese Wolfberry by Altering Its Rhizosphere Bacterial Community

“…Currently, use of chemical pesticides represents one of the biggest ecological concerns, therefore biological control using beneficial microorganisms is considered a promising approach to manage soil borne diseases ( Dhahira-Beevi and Qadri, 2010 ; Shahid and Khan, 2016 ; Singh et al, 2017 ; Alamri et al, 2019 ). Bacteria of the genus Bacillus are good candidates for use as BCAs ( Falcäo et al, 2014 ; Chowdhury et al, 2015 ; Jiang et al, 2015 ).…”

“…However, an increasing use of chemical treatments causes several negative effects such as environmental pollution, imbalance in the soil ecosystem, potential threat to silkworms, and development of pathogen resistance ( Compant et al, 2005 ; O’Brien, 2017 ). Thus, biocontrol using antagonistic microorganisms is a safer alternative to reduce the use of chemicals in agriculture, and it is considered as a promising approach for the management of soil borne diseases ( Dhahira-Beevi and Qadri, 2010 ; Shahid and Khan, 2016 ; Singh et al, 2017 ; Alamri et al, 2019 ). Biocontrol Agents (BCAs) are potentially beneficial microorganisms including fungi, viruses and a group of bacteria called plant growth promoting rhizobacteria (PGPR) ( Pal and McSpadden, 2006 ; Mota et al, 2017 ; O’Brien, 2017 ; Köhl et al, 2019 ).…”