Abstract:
Objective:To study the endophytic bacteria from
Apocynum venetum L. and their antibacterial activity in order to find novel resources. Methods:Endophytic bacteria were isolated from
Apocynum venetum L. by using the method of plate cultivation,and the antibacterial activity of the fermented metabolites was studied by the Oxford Cup method. Meanwhile,the target endophytic bacteria were identified by 16S rRNA sequence homologous analysis combined with their physiological and biochemical characteristics. Results:The fermentation broths of endophytic bacteria showed different antibacterial activity. The strain D1 had inhibitory effect on
Escherichia coli,Staphylococcus aureus,Micrococcus lutea and
Bacillus subtilis,the strain D3 had inhibitory effect on
Micrococcus lutea and
Bacillus subtilis. The D1 was identified to be
Pseudomonas hunanensis,and D3 was identified to be
Pantoea ananatis. Conclusion:The results showed that
Apocynum venetum L. contains abundant endophytic bacteria resources with antibacterial activity,which could be further developed and utilized.