Antibacterial Effect of Herba paederiae and Kalimeris indica (L.) Sch.-Bip Combined with Antibiotics

[ Objective] TO observe the in-vitro antibacterial activity of Herba paederiae and Kalimeds indica （ L. ） Sch.-Bip and their antibacterial effect when being used with commonly used antibiotics. [ Method ] Staphylococcus aureus CMCC29178 and Escherichia coli ATCC25922 reference strains were used for the determination of minimal inhibitory concentration （MIC） and fractional inhibitory concentration （FIC） index using the broth microdilution method. [ Result] The aqueous extracts of Herba paederiae and Kalimeris indica （ L. ） Sch. -Bip had certain antibacterial effects on Staphylococcus aureus and Eschedchia coli. Synergistic effects or additive effects at different degrees were observed when they were applied with the commonly used antibiotics. [ Conclusion] Water extraction can be widely used to primarily screen medicinal plants with antibacterial activity.

裂叶马兰无性系建立的研究

为保护野生资源、满足栽培对种苗的需求,以裂叶马兰的嫩茎为外植体,进行愈伤组织诱导与分化、不定芽生根、试管苗生根继代增殖的研究,以及试管苗移栽和定植的研究,建立起裂叶马兰的无性系。结果表明:MS+蔗糖35 g·L-1+6-BA0.5mg·L-1+2,4-D2.5 mg·L-1是嫩茎愈伤组织诱导培养和继代增殖培养的适宜培养基;MS+蔗糖30 g·L-1+AgN031.0 mg·L-1+GA31.0mg·L-1+ZT1.6 mg·L-1+NAA0.1 mg·L-1是愈伤组织分化培养的适宜培养基;1/2MS+蔗糖20 g·L-1+NAA 0.6 mg·L-1是不定芽生根培养和试管苗生根继代增殖培养的适宜培养基;试管苗移栽成活率为95.9%;定植成活率98.0%。定植成活的试管苗保持了野生裂叶马兰的所有植物学性状。