Isolation, Screening and Evaluation of Potential Biocontrol Endophytes Against Ralstonia solanacearum on Ginger

摘要

Ginger (Zingiber officinale Rosc), a perennial herb, its extract has the activity of antibacterial, antioxidant, antiviral, anticancer, etc. Bacterial wilt caused by R. solanacearum is one of the major limiting factor in the cultivation of ginger. The peak of occurrence and prevalence about ginger wilt is from June to August, which has the characteristics of infecting easily and rapidly by R. solanacearum [1]. However, weight and bulk of the ginger tuber increase rapidly in the period, thus, the occurrence of diseases is easy to reduce the production of ginger. The common management strategies to control the ginger wilt include the adoption of resistant varieties, crop rotation and the use of synthetic chemical fungicides [2, 3]. However, considering the limitations of these methods, it seems appropriate to search for an alternative control strategy. Biocontrol approach using antagonistic microorganisms against the pathogen is now increasingly considered as an ideal treatment to manage plant diseases [4].