...
首页> 外文期刊>Phycological Research >Reactive oxygen species contribute to the release of volatile organic compounds from Chlamydomonas reinhardtii during programmed cell death
【24h】

Reactive oxygen species contribute to the release of volatile organic compounds from Chlamydomonas reinhardtii during programmed cell death

机译:活性氧有助于程序性细胞死亡过程中从莱茵衣藻释放挥发性有机化合物

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

Acetic acid at pH5.0 can induce programmed cell death (PCD) in Chlamydomonas reinhardtii cells, and abundant volatile organic compounds (VOCs) were released during the process. In this study, the caspase-3-like activity was determined during the PCD, and it was increased significantly after 1h. During the PCD, the dynamic release of VOCs from the cells was analyzed, and the emissions of total VOCs were raised markedly and reached the highest level at 2h. Among the seven types of VOCs, such as alkanes, alkenes, terpenoids, alcohols, aldehydes, ketones and esters, three oxygenated compounds (aldehydes, ketones and esters) showed the most significant increase. O-2(-) and H2O2 were rapidly accumulated to high levels in the cells at the beginning of the PCD, but their content was reduced during the process. The activities of antioxidant enzymes were reduced gradually and even disappeared completely, demonstrating that the reduction of reactive oxygen species (ROS) may not be scavenged by the antioxidant enzyme system. ROS have an intense oxidation and scavenging ability to volatile compounds, and the oxidation results in the production of oxygenated compounds. Therefore, the abundant production of oxygenated compounds indicated that ROS may play an important role in the dynamic release of VOCs from C.reinhardtii cells during PCD.
机译:pH5.0的乙酸可以诱导莱茵衣藻细胞中的程序性细胞死亡(PCD),并且在此过程中释放出大量挥发性有机化合物(VOC)。在这项研究中,在PCD期间确定了caspase-3-like活性,并在1h后显着增加。在PCD期间,分析了细胞中VOC的动态释放,总VOC的排放量显着上升,并在2h达到最高水平。在七种挥发性有机化合物中,如烷烃,烯烃,萜烯,醇,醛,酮和酯,其中三种含氧化合物(醛,酮和酯)的增幅最大。在PCD开始时,O-2(-)和H2O2在细胞中迅速积累到高水平,但在此过程中它们的含量降低了。抗氧化剂酶的活性逐渐降低,甚至完全消失,表明抗氧化剂酶系统可能无法清除活性氧(ROS)的减少。 ROS对挥发性化合物具有强烈的氧化和清除能力,并且氧化导致生成氧化化合物。因此,含氧化合物的大量产生表明ROS可能在PCD期间从莱茵衣藻细胞动态释放VOC中起重要作用。

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