title: The changes of nitric oxide production during the growth of Microcystis aerugrinosa.
abstract: This study characterized the changes of nitric oxide (NO) production during the growth of Microcystis aerugrinosa, a cyanobacterium which usually cause cyanobacterial blooms. Results showed a drastic NO release accompanying with cell density and Chl-a content sharp rises when M. aerugrinosa grew from fifth day to sixth day. Moreover, high N:P ratio accelerated the cyanobacterial growth and NO burst. Sodium nitroprusside, an exogenous NO donor, promoted M. aerugrinosa growth with the optimal concentration of 0.1 mg/L. Experiments by supplementing with sodium nitrite and L-arginine demonstrated NO production in M. aerugrinosa cells was mainly through nitrate reductase (NR) pathway while minorly through NO synthase pathway. All these data suggested M. aerugrinosa produced increasing NO during its growth mainly by NR pathway, during which NO positively regulated the growth of M. aerugrinosa.
authors.affiliation: Key Laboratory for Subtropical Wetland Ecosystem Research of Ministry of Education of China, Xiamen University, Xiamen, Fujian 361005, PR China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Tang
authors.forename: Juan
authors.initials: J
authors.lastname: Chen
authors.forename: Wen-Hua
authors.initials: WH
authors.lastname: Wang
authors.forename: Ting-Wu
authors.initials: TW
authors.lastname: Liu
authors.forename: Jun
authors.initials: J
authors.lastname: Zhang
authors.forename: Ya-Hui
authors.initials: YH
authors.lastname: Gao
authors.forename: Zhen-Ming
authors.initials: ZM
authors.lastname: Pei
authors.forename: Hai-Lei
authors.initials: HL
authors.lastname: Zheng
mesh_terms: D001426:Bacterial Proteins / Q000378:metabolism; D046931:Microcystis / Q000201:enzymology / Q000254:growth & development* / Q000378:metabolism*; D050901:Nitrate Reductase / Q000378:metabolism; D009569:Nitric Oxide / Q000378:metabolism*
chemical_list: D001426:Bacterial Proteins; D009569:Nitric Oxide; D050901:Nitrate Reductase