Antiviral activity and mechanism of gossypols: effects of the O<sub>2</sub>˙<sup>−</sup> production rate and the chirality
作者:Bin Zhang、Yuxiu Liu、Ziwen Wang、Yongqiang Li、Qingmin Wang
DOI:10.1039/c6ra28625a
日期:——
that these gossypol compounds could neither inhibit the multiplication of TMV nor induce the systemic acquired resistance of tobacco plants. However, gossypol compounds with high anti-TMV activities could induce the accumulation of reactive oxygen species (ROS) in tobacco leaves, and this result is in accordance with the characteristics of extreme resistance featuring a necessary early and rapid ROS
(-)-棉酚对烟草花叶病毒(TMV)的抗病毒活性明显高于(+)-棉酚,而(-)-棉酚Schiff碱的抗TMV活性并不显着高于(+)-棉酚。希夫碱。一项机理研究表明,这些棉酚化合物既不能抑制TMV的繁殖,也不能诱导烟草植物的系统获得性抗性。然而,具有高抗TMV活动棉酚化合物可诱导反应性氧物质的烟叶中积累(ROS),而这一结果是根据极端抗性的设有必要早期快速ROS特性(O 2 ˙ -或H 2 O 2)在植物中的积累。进一步的研究表明:在试验化合物的抗TMV活动时,将O同步下降2 ˙ -积累减少了超氧化物歧化酶(SOD)。但是,当过氧化氢(CAT)抑制H 2 O 2积累时,抗TMV活性不变。因此,与H相比2 ö 2中棉酚积累化合物处理过的烟草叶中,O 2 ˙ -积累是为那些化合物的抗TMV活动的发展的关键因素,并且它们的抗TMV机构属于他们的极端抵抗。进一步的研究表明,将O 2 ˙-堆积在( -
Oxyalkylated quaternary ammonium compounds and plant growth regulating
申请人:Dai-Ichi Kogyo Seiyaku Co., Ltd.
公开号:US05076828A1
公开(公告)日:1991-12-31
This invention relates to novel oxyalkylated quaternary ammonium compounds, processes for their production and plant growth regulating compositions containing the same compounds. Each of these oxyalkylated quaternary ammonium compounds consists of an oxyalkylated quaternary ammonium cation and an anion selected from among carboxylic acid residues, aminosulfonic acid residues and phosphoric acid ester residues. These oxyalkylated quaternary ammonium compounds are least phytotoxic, produce marked growth regulating effects on a broad species of plants and are not easily decomposed by microorganisms.