title: [The inhibitory effect of Hydrilla verticillata culture water on Microcystic aeruginosa and its mechanism].
abstract: This paper studied on the effect and mechanism that the growth of M. aerugonsa was markedly inhibited by the H. verticillata culture water. During treatment, the photosynthetic rate of M. aerugonsa declined, while its respiratory rate and SOD activity increased firstly, then decreased as the treatment went on. Its membrane permeability also increased significantly. TEM photographs showed that the ultrastructure of cell membrane, thylakoid lamella and pith nucleoid of M. aerugonsa were destroyed severely. Inhibitory effects could be observed only when the extracts were extracted by ether. The more extracts from ether, the better inhibitory effect observed. It suggested that the inhibitory effects of H. verticillata on M. aeruginosa were through excreting substances into water. GC/MS analytic result showed that the ether extract mainly consisted of 1,2-benzenedicarboxylic acid diisooctyl ester, dibutyl phthalate, and 1,2-benzenedicarboxylic acid butyl 2-methylpropyl ester.
authors.affiliation: College of Life Sciences, Nanjing Normal University, Nanjing 210097, China.
authors.forename: Li-Xin
authors.initials: LX
authors.lastname: Wang
authors.forename: Ling
authors.initials: L
authors.lastname: Zhang
authors.forename: Yu-Xia
authors.initials: YX
authors.lastname: Zhang
authors.forename: Chun-Yan
authors.initials: CY
authors.lastname: Jin
authors.forename: Chang-Mei
authors.initials: CM
authors.lastname: Lu
authors.forename: Guo-Rong
authors.initials: GR
authors.lastname: Wu
mesh_terms: D017077:Culture Media, Conditioned / Q000494:pharmacology; D000458:Cyanobacteria / Q000187:drug effects / Q000378:metabolism* / Q000648:ultrastructure; D003993:Dibutyl Phthalate / Q000494:pharmacology; D008401:Gas Chromatography-Mass Spectrometry; D031321:Hydrocharitaceae / Q000378:metabolism*; D046529:Microscopy, Electron, Transmission; D010101:Oxygen Consumption / Q000187:drug effects / Q000502:physiology; D010788:Photosynthesis / Q000187:drug effects / Q000502:physiology*; D010936:Plant Extracts / Q000494:pharmacology
chemical_list: D017077:Culture Media, Conditioned; D010936:Plant Extracts; D003993:Dibutyl Phthalate