Department of Biology, Faculty of Science, Osaka City University, Sumiyoshi-ku, Osaka 558, Japan.
Plant Physiol. 1988 Oct;88(2):441-3. doi: 10.1104/pp.88.2.441.
The activity of diamine oxidase (EC 1.4.3.6.) in pea, Pisum sativum cv Alaska, cotyledons was studied. The rapid hydration caused by soaking seeds in water, the excision of the embryonic axis, and the suppression of the elongation of the embryonic axis by indoleacetic acid generate anaerobic conditions in these cotyledons that suppress diamine oxidase activity. These results show that oxygen is essential for the induction of diamine oxidase activity in pea cotyledons. During germination cotyledonary diamine oxidase develops as a result of the supply of oxygen through the embryonic axis of the intact pea seedling.
我们研究了豌豆(Pisum sativum cv Alaska)子叶中二胺氧化酶(EC 1.4.3.6.)的活性。种子浸泡在水中会导致其迅速吸水,切除胚轴,以及吲哚乙酸抑制胚轴伸长,这些都会在子叶中产生抑制二胺氧化酶活性的厌氧条件。这些结果表明,氧对于豌豆子叶中二胺氧化酶活性的诱导是必需的。在萌发过程中,通过完整的豌豆幼苗胚轴供氧,子叶中二胺氧化酶随之发育。