Ramputh A. I., Bown A. W.
Department of Biological Sciences, Brock University, St. Catharines, Ontario, Canada L2S 3A1.
Plant Physiol. 1996 Aug;111(4):1349-1352. doi: 10.1104/pp.111.4.1349.
The hypothesis that rapid [gamma]-aminobutyrate (GABA) accumulation is a plant defense against phytophagous insects was investigated. Increasing GABA levels in a synthetic diet from 1.6 to 2.6 [mu]mol g-1 fresh weight reduced the growth rates, developmental rates, and survival rates of cultured Choristoneura rosaceana cv Harris larvae. Simulation of the mechanical damage resulting from phytophagous activity increased soybean (Glycine max L.) leaf GABA 10- to 25-fold within 1 to 4 min. Pulverizing leaf tissue resulted in a value of 2.15 ([plus or minus]0.11 SE) [mu]mol GABA g-1 fresh weight.
研究了γ-氨基丁酸(GABA)快速积累是植物抵御植食性昆虫的一种防御机制这一假说。在合成饲料中,将GABA水平从1.6微摩尔/克鲜重提高到2.6微摩尔/克鲜重,降低了人工饲养的蔷薇卷叶蛾cv哈里斯幼虫的生长速率、发育速率和存活率。模拟植食性活动造成的机械损伤,使大豆(Glycine max L.)叶片中的GABA在1至4分钟内增加了10至25倍。将叶片组织粉碎后,GABA含量为2.15(±0.11标准误)微摩尔/克鲜重。