Enzymatic and non-enzymatic defense mechanisms against ultraviolet-B radiation in two Anabaena species
作者: Garvita SinghPiyoosh K. BabeleRajeshwar P. SinhaMadhu B. TyagiAshok Kumar
作者单位: 1School of Biotechnology, Banaras Hindu University, Varanasi 221005, India
2Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India
3Department of Botany, MMV, Banaras Hindu University, Varanasi 221005, India
刊名: Process Biochemistry, 2013, Vol.48 (5-6), pp.796-802
来源数据库: Elsevier Journal
DOI: 10.1016/j.procbio.2013.04.022
关键词: Ultraviolet-B (UV-B) radiationAnabaena speciesAntioxidative enzymesMycosporine-like amino acids (MAAs)
原始语种摘要: Abstract(#br)Enzymatic and non-enzymatic defense strategies against ultraviolet-B radiation (UV-B, 280–315nm) were studied in Anabaena doliolum and Anabaena strain L31, two of the most common strains of Indian cyanobacteria. Upon UV-B irradiation, both strains showed a 2–5-fold increase in antioxidative enzymes, such as superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX) and peroxidase (POD), as compared to non-irradiated control cultures. These enzymes scavenge damaging reactive oxygen species (ROS), generated by UV-B radiation inside the cells. In addition, these organisms also synthesize mycosporine-like amino acids (MAAs) which are able to carry out UV-screening and/at the same time as UV-quenching. The identification and characterization of three...
全文获取路径: Elsevier  (合作)
影响因子:2.414 (2012)

  • radiation 辐射
  • species 
  • enzymatic 酶催的
  • ultraviolet 紫外线的
  • mycosporine 杀枝曲菌素
  • cyanobacteria 蓝藻细菌
  • against 反对
  • spectroscopy 分光学
  • enzymes 酶类
  • peroxidase 过氧物酶