美国 Ilinois 大学的科学家发明了一种借助阳光杀死植物的新型除草剂。这种除草剂具有高度的选择性,能够杀死多种常见的杂草,而对作物和人畜无害。因此,这项发明被认为是一项重大突破。这种除草剂的基本成分是三氨基果糖酸(dolta—aminolaevulnic acid,简称ALA),它存在于动植物的细胞中,是合成叶绿素或血红素的基本成分。这种除草剂的作用机理与别的不同,它借助光的激发,形成一种破坏细胞组织结构的物质,使细胞膜破损、汁液外流,造成植株脱水死亡。由于靠光触发,因此它被称作 Scientists at the University of Illinois at Illinois invented a new herbicide that kills plants with sunlight. This herbicide is highly selective and can kill a wide range of common weeds, but not crops and humans. Therefore, this invention is considered as a major breakthrough. The basic component of this herbicide is dolta-aminolaevulnic acid (ALA), which is found in cells of animals and plants and is an essential component in the synthesis of chlorophyll or heme. The mechanism of action of this herbicide and other different, it is by means of light excitation, the formation of a destruction of cell tissue material, the cell membrane damage, juice outflow, resulting in plant dehydration. It’s called because it’s triggered by light