砷对蓝藻光合作用和细胞生长的影响
EFFECTS OF ARSENIC ON GROWTH AND PHOTOSYNTHESIS OF CYANOBACTERIA
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摘要: 在世界的许多地方, 砷污染是一个严重的问题, 尤其是水体中的污染程度更加严重。砷主要以As( V) 和As( ó ) 形式存在。由于AsO43- 在结构上与PO43-很相似, 它通过磷转运途径进入细胞, 因此砷的毒性主要是源于对磷代谢的干扰[1] 。砷对于人和动物的危害性是人所共知的, 它会引发细胞凋亡, 导致多种组织和器官发生癌变, 从而引起死亡。但是砷对于水体生态系统中的重要类群) 藻类的生理和生长的影响报道较少。
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Keywords:
- Arsenic:Luciferase /
- Anabaena sp. /
- PCC7120:Photosynthesis activity /
- Growth
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[1] Nies D H.Microbial heavy-metal resistance[J].Appl Microbiol Biotechnol,1999,51:730-750
[2] Castenholz R W. Methods in Enzymology[M],New York:Academic Press,1998.63-93
[3] Marker A M H.The use of acetone and methanol in the estimation of chlorophyll in the presence of phaeophytin[J].Freshwater Biol.,1972,2:361-385
[4] Gupta A,Whitton B A,Morby A P,et al.Amplification and rearrangement of a prokaryotic metallothionein locus smt in Synechococcus PCC6301 selected for tolerance to cadmium[J].Proc R Soc Lond Ser B Biol Sci,1992,248:273-281
[5] Gupta A,Morby A P,Turner J S,et al.Deletion within the metallothionein locus of cadmium-tolerant Synechococcus PCC 6301 involving a highly iterated palindrome(HIP1)[J].Mol Microbiol.,1993,7:189-195
[6] Turner J S,Morby A P,Whitton B A,et al.Construction of Zn2+/Cd2+hypersensitive cyanobacterial mutants lacking a functional metallothionein locus[J].J Biol Chem.,1993,268:4494-4498
[7] Turner J S,Robinson N J,Gupta A.Construction of Zn2+/Cd2+tolerant cyanobacteria with a modified metallothionein divergon:further analysis of the function and regulation of smt.J Ind Microbiol.,1995,14:259-264
[8] Turner J S,Glands P D,Samson A C,et al.Zn2+sensing by the cyanobacterial metallothionein repressor SmtB:different motifs mediate metal-induced protein-DNA dissociation[J].Nucleic Acids Res.,1996,24:3714-3721
[9] Coyle P,Philcoxa J C,Carey L C.et al.Metallothionein:The multipurpose protein[J].Cmls Cell.Mol.Life Sci.,2002,59:627-647
[10] Xu J L,Yang J R.Heave metals in terrestrial ecosystem[M].Beijing:Chinese Environment Pres.1995,137[许嘉琳,杨居荣.陆地生态系统中的重金属.北京:中国环境出版社.1995,137]
[11] Ning S B,Guo H L,Wang L.et al.Salt stress induces programmed cell death in prokaryotic organism Anabaena[J].Journal of Applied Microbiology,2002,93:15-28
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