title: Evidence for the mutual effects of dimethylsulfoniopropionate and nitric oxide during the growth of marine microalgae.
abstract: Dimethylsulfoniopropionate (DMSP) and nitric oxide (NO) in marine microalgae are considered as two important compounds involved in a variety of physiological functions. We examined the NO responses and the growth of Isochrysis galbana Parke and Gymnodinium sp. when supplemented with different concentrations of DMSP solutions in the cultures. Production of DMSP and dimethylsulfide (DMS) in Amphidinium carterae and Emiliania Huxleyi was investigated after the addition of NO donor sodium nitroprusside (SNP) and NO solution to algal media. The release peaks of NO were observed in cell suspensions of I. galbana Parke and Gymnodinium sp. immediately after the injection of DMSP solutions. The growth of these two microalgae was found to be significantly promoted or inhibited caused by exogenous DMSP. There was a decrease of DMSP concentrations in algal cultures within 24 h, accompanied with an increase in DMS, due to the effect of NO. The results provided direct evidence to confirm that there exist mutual effects of DMSP and NO during the growth of marine microalgae, which is speculated to be related to their roles as signaling molecules in planktonic communities.
authors.affiliation: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China; Department of Chemistry, State University of New York College of Environmental Science and Forestry, 1 Forestry Drive, Syracuse, NY 13210, USA. Electronic address: roseliu@mail.ouc.edu.cn.
authors.forename: Chun-ying
authors.initials: CY
authors.lastname: Liu
authors.affiliation: Department of Chemistry, State University of New York College of Environmental Science and Forestry, 1 Forestry Drive, Syracuse, NY 13210, USA.
authors.forename: David J
authors.initials: DJ
authors.lastname: Kieber
authors.affiliation: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
authors.forename: Gui-peng
authors.initials: GP
authors.lastname: Yang
authors.affiliation: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Xue
authors.affiliation: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
authors.forename: Li-li
authors.initials: LL
authors.lastname: Wang
authors.affiliation: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
authors.forename: Huan-huan
authors.initials: HH
authors.lastname: Liu
mesh_terms: D008386:Marine Biology; D058086:Microalgae / Q000254:growth & development*; D009569:Nitric Oxide / Q000494:pharmacology*; D013452:Sulfonium Compounds / Q000494:pharmacology*
chemical_list: D013452:Sulfonium Compounds; D009569:Nitric Oxide; C068078:dimethylpropiothetin
keywords: Dimethylsulfide (DMS); Dimethylsulfoniopropionate (DMSP); Marine microalgae; Mutual effects; Nitric oxide (NO); Signaling molecules