Treatment with moderate concentrations of NaHSO3 enhances photobiological H2 production in the cyanobacterium Anabaena sp. strain PCC 7120
Treatment with moderate concentrations of NaHSO3 enhances photobiological H2 production in the cyanobacterium Anabaena sp. strain PCC 7120
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DOI：
10.1016/j.ijhydene.2010.08.115
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发表时间：
2010-12
影响因子：
7.2
通讯作者：
Lianjun Wang;Ming Chen;Lanzhen Wei;F. Gao;Zhongxian Lv;Quanxi Wang;Weimin Ma
中科院分区：
文献类型：
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作者：
Lianjun Wang;Ming Chen;Lanzhen Wei;F. Gao;Zhongxian Lv;Quanxi Wang;Weimin Ma
在蓝藻中，低浓度的NaHSO3处理可以提高光合效率，而高浓度的NaHSO3通常会抑制细胞生长，光合作用甚至会导致死亡。在本研究中，我们的研究结果表明，处理与中等浓度的亚硫酸氢钠显着提高了光合产氢的丝状固氮蓝藻鱼腥藻菌株PCC 7120的产量。在稳态条件下，积累的H2水平在细胞与1 mM NaHSO3处理约10倍，高于未经处理的细胞。这种改善发生在异形胞中，并且最有可能是由固氮酶的表达和活性增加引起的。在本研究中所获得的结果和从以前的知识的基础上，提出了低，中，高浓度的NaHSO3处理蓝藻的效果。
In cyanobacteria, treatment with low concentrations of NaHSO3can enhance photosynthetic efficiency, whereas NaHSO3in high amounts often inhibits cell growth and photosynthesis may even cause death. In the present study, our results showed that treatment with moderate concentrations of NaHSO3considerably improved the yield of photobiological H2production in the filamentous N2-fixing cyanobacterium Anabaena sp. strain PCC 7120. Under steady state conditions, the accumulated H2levels in cells treated with 1 mM NaHSO3were approximately 10 times higher than that in untreated cells. Such improvement occurred in heterocysts and was most likely caused by increases in the expression and activity of nitrogenase. The effects of treatment with low, moderate, and high concentrations of NaHSO3in cyanobacteria were proposed on the basis of the results obtained in the present study and from previous knowledge.