Role of white light in reversing UV-B-mediated effects in the N 2 -fixing cyanobacterium Anabaena BT2
作者: Ashok KumarMadhu B. TyagiNilima SinghRashmi TyagiPrabhat N. JhaRajeshwar P. SinhaDonat-P. Häder
作者单位: 1School of Biotechnology, Banaras Hindu University, Varanasi 221 005, India
2Department of Botany, Women’s College, Banaras Hindu University, Varanasi 221 005, India
3Institut für Botanik und Pharmazeutische Biologie, Friedrich-Alexander-Universität, Staudtstr. 5, Erlangen D-91058, Germany
刊名: Journal of Photochemistry & Photobiology, B: Biology, 2003, Vol.71 (1), pp.35-42
来源数据库: Elsevier Journal
DOI: 10.1016/j.jphotobiol.2003.07.002
关键词: 14 CO 2 uptakeRuBISCO activityVisible lightAnabaena BT2PhotoreactivationSurvivalUltraviolet radiation
原始语种摘要: Abstract(#br)The effects of various irradiances of artificial UV-B (280–315 nm) in the presence or absence of visible light (photosynthetically active radiation) on growth, survival, 14 CO 2 uptake and ribulose 1,5-bisphosphate carboxylase (RuBISCO) activity were studied in the N 2 -fixing cyanobacterium Anabaena BT2. We tested the hypothesis whether or not visible radiation offers any protection against UV-B-induced deleterious effects on growth and photosynthesis in Anabaena BT2. Attempts were also made to determine the irradiances of UV-B where inhibitory effects could be mitigated by simultaneous irradiation with visible light. Exposure of cultures to 0.2 W m −2 or higher irradiance of UV-B caused inhibition of growth and survival and growth ceased above 1.0 W m −2 . 14 CO 2 uptake...
全文获取路径: Elsevier  (合作)

  • effects 海员自身物品
  • activity 活度
  • light 
  • uptake 上风口
  • radiation 辐射
  • simultaneous 同时的
  • studied 学习
  • growth 生长
  • conditions 条件式
  • visible 看得见的