光合抑制剂DCMU对异养生长蓝藻叶绿素合成的作用
EFFECT OF THE PHOTOSYNTHESIS INHIBITOR DCMU ON CHLOROPHYLL SYNTHESIS IN HETEROTROPHIC CYANOBACTERIA
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摘要: 与被子植物不同,蓝藻叶绿素的合成存在依赖于光和不依赖于光的两条途径[1],故异养生长的蓝藻在黑暗条件下同样合成叶绿素。在不同营养条件下,蓝藻的叶绿素合成也相对稳定,其含量常作为生物量的指标。已知DCMU是一种光合作用抑制剂,阻断光系统向质体醌的电子传递。有报道显示,DCMU可调控蓝藻Calothrix的细胞分化[2]。但DCMU对于蓝藻叶绿素合成的作用从未见报道。在对表达glk和lac ZYA基因蓝藻的异养生长研究中[3],作者发现DCMU显著抑制丝状固氮蓝藻的叶绿素合成,而对单细胞蓝藻没有影响。
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Keywords:
- DCMU /
- Chlorophyll synthesis /
- Cyanobacteria /
- Heterotrophic growth
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[1] Beale S. Biosynthesis of cyanobacterial tetrapyrrole pigments:hemes, chlorophylls, and phycobillins [C]. Bryant D. The Molecular Biology of Cyanobacteria. The Netherlands: Kluwer Academic Publishers, 1994. 519-558[2] Campbell D, Houmard J, Tandeau de Marsac T. Electron transport regulates cellular differentiation in the filamentous cyanobacterium Calothrix [J]. The Plant Cell, 1993. 5:451-463[3] 余利红,郭厚良,徐旭东.表达glk和lac ZYA基因的蓝藻的异养生长[J].水生生物学报,2002,26(2)[4] Mackinney G. Absorption of light by chlorophyll solutions [J]. J Biol Chem, 1941, 140:315-322[5] Shen G, Boussiba S, Vermaas F J. Synechocystis sp PCC 6803 strains lacking photosystem Ⅰ and phycobilisome function [J]. The Plant Cell, 1993, 5: 1853-1863[6] Cai Y A, Schwartz S H, Glazer A N. Transposon insertion in genes coding for the biosynthesis of structural components of the Anabaena sp. phycobilisome [J]. Photosynthesis Res, 1997. 53: 109-120研究简报 Beale S. Biosynthesis of cyanobacterial tetrapyrrole pigments:hemes, chlorophylls, and phycobillins [C]. Bryant D. The Molecular Biology of Cyanobacteria. The Netherlands: Kluwer Academic Publishers, 1994. 519-558[2] Campbell D, Houmard J, Tandeau de Marsac T. Electron transport regulates cellular differentiation in the filamentous cyanobacterium Calothrix [J]. The Plant Cell, 1993. 5:451-463[3] 余利红,郭厚良,徐旭东.表达glk和lac ZYA基因的蓝藻的异养生长[J].水生生物学报,2002,26(2)[4] Mackinney G. Absorption of light by chlorophyll solutions [J]. J Biol Chem, 1941, 140:315-322[5] Shen G, Boussiba S, Vermaas F J. Synechocystis sp PCC 6803 strains lacking photosystem Ⅰ and phycobilisome function [J]. The Plant Cell, 1993, 5: 1853-1863[6] Cai Y A, Schwartz S H, Glazer A N. Transposon insertion in genes coding for the biosynthesis of structural components of the Anabaena sp. phycobilisome [J]. Photosynthesis Res, 1997. 53: 109-120研究简报
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