...
首页> 外文期刊>Journal of Agricultural and Food Chemistry >Translation of in vitro inhibition by marine natural products of the C-4 acid cycle enzyme pyruvate P-i dikinase to in vivo C-4 plant tissue death
【24h】

Translation of in vitro inhibition by marine natural products of the C-4 acid cycle enzyme pyruvate P-i dikinase to in vivo C-4 plant tissue death

机译:海洋天然产物对C-4酸循环酶丙酮酸P-1双激酶的体外抑制作用对体内C-4植物组织死亡的转化

获取原文
获取原文并翻译 | 示例
           

摘要

Marine organism derived extracts, previously identified as containing compounds that inhibited the C-4 acid cycle enzyme pyruvate Pi dikinase (PPDK), were assessed for their ability to exhibit an effect on the C-4 plants Digitaria ciliaris and Echinochloa crus-galli. Oxygen electrode studies revealed that over half of these extracts inhibited C-4 acid driven photosynthesis in leaf slices. Seventeen extracts had a deleterious effect on C4 plants in vivo within 24 h, whereas 36 caused an observable phytotoxic response in one or both of the C-4 plants used for in vivo testing. None of the extracts inhibited PPDK metabolism of pyruvate via a directly competitive mechanism, instead hindering the enzyme by either mixed or uncompetitive means. This screening strategy, using a suite of assays, led to the isolation and identification of the herbicidal marine natural product ilimaquinone.
机译:评估了先前鉴定为含有抑制C-4酸循环酶丙酮酸Pi双激酶(PPDK)的化合物的海洋生物提取物对C-4植物Digitaria ciliaris和Echinochloa crus-galli产生影响的能力。氧电极研究表明,这些提取物中有一半以上抑制了叶切片中C-4酸驱动的光合作用。 17种提取物在24小时内对体内的C4植物具有有害作用,而36种提取物在用于体内测试的一种或两种C-4植物中引起了可观察到的植物毒性反应。没有一种提取物通过直接竞争机制抑制丙酮酸的PPDK代谢,而是通过混合或非竞争性方式阻碍了该酶。使用一系列测定方法进行的筛选策略导致了对除草剂海洋天然产物伊利马醌的分离和鉴定。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号