- 作者: Ito, Chihiro ; Fujiwara, Kazuko ; Koizumi, Meisaku et al.
- 作者服務機構: Faculty of Pharmacy, Meijo Univ., Nagoya, Japan
- 中文摘要:
Citrus bacterial canker caused by Xanthomomas campestris pv. citri (Hasse 1915) Dye 1978, a gram-negative and rod-shape bacteria, is one of the destructive diseases of Citrus. There is marked diversity in resistance to the disease among Citrus plants . Calamondin, Citrus madurensis Lour. (Shiki-kitsu) is one of the highly resistant plants. In resistant plants bacterial multiplication is restrained by the embedding of electron dense materials in intercellular spaces. This suggests the presence of an antibacterial substance in resistant plants.
The third author assayed the 85% ethanol extracts of Citrus leaves infected with bacterial canker for static activities to X. campestris. pv. citri. An active fraction was found in Calamondin. We further purified and characterized its ingredients on the basis of spectrometric analyses. Its structure was found to be identical with 3- hydroxy-5,6,7,8,3',4'-hexamethoxyflavone (1) isolated from Citrus natsudaidai Hayata. However, its antibacterial activity is first reported by us. - 英文摘要: --
- 中文關鍵字: Antibacterial Substance; Citrus Plant; Xanthomomas Campestris
- 英文關鍵字: 抗菌基質;柑橘植物;十字花科黑腐病黃單胞桿菌