海洋着色菌Marichromatium gracile YL28静息细胞对无机三态氮的相互转化作用  

Reciprocal Transformation of Inorganic Nitrogen by Resting Cells of Marichromatium gracile YL28

作　　者：蒋鹏[1] 洪璇[1,2] 赵春贵[1] 杨素萍[1] 

机构地区：[1]华侨大学化工学院,福建厦门361021 [2]厦门医学高等专科学校药学系,福建厦门361008

出　　处：《华侨大学学报（自然科学版）》2015年第2期185-189,共5页Journal of Huaqiao University(Natural Science)

基　　金：国家自然科学基金资助项目(31070054);国家海洋公益性行业科研专项(201505026);福建省自然科学基金资助项目(2012J01136);福建省教育厅科技项目(JB11275)

摘　　要：分析不产氧光合细菌海洋着色菌Marichromatium gracile YL28静息细胞对无机三态氮(氨氮、亚硝氮和硝氮)的去除和相互转化作用.结果表明:在适宜温度和pH值的厌氧环境中,YL28菌株静息细胞对亚硝氮和硝氮具有良好的去除能力,并且能将氨氮转化为少量的硝氮、将亚硝氮动态地转化为硝氮,硝氮也能动态地转化为亚硝氮,但未检测到将硝氮和亚硝氮转化为氨氮的过程.由此可知,YL28菌株的静息细胞具有良好的反硝化作用,能够去除水体中的亚硝氮和硝氮.The progress of removal and transformation of inorganic nitrogen including ammonium,nitrite,and nitrate by the resting cells of Marichromatium gracile YL28 were investigated in this work.The YL28 resting cells could remove nitrite and nitrate efficiently under the anaerobic condition with appropriate temperature and pH value.They also showed a low transformation capability of ammonium to nitrate,and the reciprocal transformation between nitrite and nitrate could be detected,followed by nitrite or nitrate products disappeared.But the transformation of nitrite and nitrate into ammonium could not be detected.These results demonstrated that the YL28 resting cells could remove nitrite and nitrate from waters efficiently,suggesting that the strain YL28 possesses good capability of anaerobic denitrification.

关 键 词：海洋着色菌 静息细胞 氨氮 亚硝氮 硝氮 

分 类 号：Q939.99[生物学—微生物学]