...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Agricultural and Food Chemistry >Phytotoxic Metabolites Produced by Diaporthella cryptica, the Causal Agent of Hazelnut Branch Canker
【24h】

Phytotoxic Metabolites Produced by Diaporthella cryptica, the Causal Agent of Hazelnut Branch Canker

机译：斑点植物植物植物植物植物植物植物（榛子罐）

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

From the culture filtrates of Diaporthella cryptica, an emerging hazelnut pathogen, 2-hydroxy-3-phenylpropanoate methyl ester and its 3-(4-hydroxyphenyl) and 3-(1H-indol-3-yl) analogues, named crypticins A-C, were isolated together with the well-known tyrosol. Crypticins A-C were identified by spectroscopic (essentially nudear magnetic resonance and high resolution electrospray ionization mass spectrometry) methods. The R absolute configuration (AC) of crypticin A was determined by comparing its optical rotation and electronic circular dichroism (ECD) spectrum with those of papuline, the methyl ester of (-)(S)-phenyllactic acid isolated as the main phytotoxin of Pseudomonas syringae pv. papulans, responsible for apple blister spot. The ACs of crypticins B and C were determined by time -dependent density functional theory calculations of their ECD spectra. Papuline and the new metabolites herein isolated, except tyrosol, were tested at 1 mg/mL on cork oak, grapevine, hazelnut, and holm oak leaves using the leaf puncture assay. They were also tested on tomato cuttings at 0.5 and 0.05 mg/mL. In the leaf puncture assay, none of the compounds was found to be active. Crypticin C and papuline were active in the tomato cutting assay. Additionally, crypticin C displayed moderate inhibitory effect against Phytophthora cambivora.
机译：从Diaporthella隐秘，一个新兴的榛子病原体，2-羟基-3-苯基甲基酯和其3-（4-羟苯基）和3-（1H-吲哚-3-基）类似物，命名为AC crypticins的培养滤液，分别为与众所周知的酪冬醇分离。通过光谱（基本上灯泡磁共振和高分辨率电喷雾电离质谱）方法鉴定Crypticins A-C.通过将其光学旋转和电子圆形二中相（ECD）光谱与突氨粉的光学旋转和电子圆形二色（ECD）光谱进行比较，确定了Crypticin A的R绝对构型（Ac），（ - ） - 苯甲基丙酸的甲酯分离为假单胞菌的主要植物毒素Syringae pv。 Papulans，负责苹果泡罩斑点。通过时间依赖性密度函数理论计算来确定Crypticins B和C的ACS。在用叶片穿刺测定的软木橡木，葡萄橡胶，葡萄橡胶和Holm橡树叶上以1mg / ml检测除酪酚外，在酪术外分离的粉底蛋白和本文的新代谢物。它们也在0.5和0.05mg / ml的番茄扦插上进行测试。在叶片穿刺测定中，发现任何化合物都不会有效。 Crypticin C和Papuline在番茄切割测定中活跃。此外，Crypticin C针对植物对植物的抑制效果呈现适度的抑制作用。

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