Isolation of ambiguine D isonitrile from Hapalosiphon sp and characterization of its phytotoxic activity

被引：14
作者：
Koodkaew, Intira [1 ]
Sunohara, Yukari [1 ]
Matsuyama, Shigeru [1 ]
Matsumoto, Hiroshi [1 ]
机构：
[1] Univ Tsukaba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan
来源：
PLANT GROWTH REGULATION | 2012年 / 68卷 / 02期
关键词：
Hapalosiphon sp; Ambiguine D isonitrile; Cell death; Mitosis; Reactive oxygen species; Lipid peroxidation; PROGRAMMED CELL-DEATH; CYANOBACTERIUM FISCHERELLA-AMBIGUA; ALBA L. SEEDLINGS; OXIDATIVE STRESS; MEMBRANE-PERMEABILITY; SECONDARY METABOLITES; CRUDE EXTRACT; BLUE; ALKALOIDS; PLANTS;
D O I：
10.1007/s10725-012-9700-8
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Cyanobacterium Hapalosiphon sp. contains phytotoxic substances. Fractionation of Hapalosiphon sp. crude extract guided by lettuce seedlings bioassay revealed that multiple fractions contained differential plant growth suppression activity. From the most active fraction inhibiting the growth of lettuce, ambiguine D isonitrile was isolated. A physiological study with ambiguine D isonitrile showed that it effectively inhibited mitosis, which resulted in the suppression of root growth. Ambiguine D isonitrile caused increased reactive oxygen species (ROS) generation and was associated with observed lipid peroxidation and cell death. These oxidative processes probably play a key role in the phytotoxic action of ambiguine D isonitrile in plants.
引用
收藏
页码：141 / 150
页数：10
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