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Tobacco bacterial wilt (TBW) is caused by Ralstonia solanacearum (R. solanacearum), a severe pathogenic agent with a wide host range. In this study, lime + ammonium bicarbonate (L + AB), organic fertilizer (OF), bio-organic fertilizer (BOF), and integrated treatment (L + AB + BOF) were assessed for the ability to control TBW and to influence the composition(More)
The colonization of rhizosphere by microorganisms is directly associated with bacterial growth, chemotaxis, biofilm formation, and the interaction with host plant root exudates. In this study, the responses of Ralstonia solanacearum to the root exudates from two tobacco cultivars (Hongda, susceptible; K326, resistant) were determined. The results showed(More)
Bacillus amyloliquefaciens is a plant-beneficial Gram-positive bacterium involved in suppressing soil-borne pathogens through the secretion of secondary metabolites and high rhizosphere competence. Biofilm formation is regarded as a prerequisite for high rhizosphere competence. In this work, we show that plant extracts affect the chemotaxis and biofilm(More)
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