title: Effects of d-menthol stress on the growth of and microcystin release by the freshwater cyanobacterium Microcystis aeruginosa FACHB-905.
abstract: The effects of d-menthol on the growth of Microcystis aeruginosa FACHB-905 and microcystin (MCY) concentration were evaluated by batch culture experiments. The algal biomass and the intracellular and extracellular MCY concentrations were evaluated during 5d incubation. After the d-menthol exposure, the dry weight of the cells gradually decreased; the decrease in the dry weight after 5d exposure was 29, 12, and 2mgL(-1) when the initial cell densities were 1.4×10(7), 1.2×10(6), and 2.9×10(5)cellmL(-1), respectively. The results indicate that the d-menthol exposure inhibited the cellular growth, thus also inhibiting the increase of the total MCY concentration. In the presence of d-menthol, the intracellular MCY was gradually released into the medium after the cell lysis. The extracellular MCY concentration in the medium was significantly higher in the d-menthol-exposed samples than in the control samples, confirming that d-menthol cannot decompose the extracellular MCY.
authors: College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China.
authors: Xi
authors: X
authors: Hu
authors: College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China. Electronic address: xixixixi2046@gmail.com.
authors: Yunguo
authors: Y
authors: Liu
authors: College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.
authors: Guangming
authors: G
authors: Zeng
authors: College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.
authors: Weihua
authors: W
authors: Xu
authors: College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China.
authors: Xinjiang
authors: X
authors: Hu
authors: Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.
authors: Zhilin
authors: Z
authors: Zhu
authors: College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China.
authors: Pingyang
authors: P
authors: Zhang
authors: College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China.
authors: Yaqin
authors: Y
authors: Wang
mesh_terms: D000704:Analysis of Variance; D004591:Electrophoresis, Polyacrylamide Gel; D005618:Fresh Water / Q000382:microbiology; D008610:Menthol / Q000633:toxicity*; D052998:Microcystins / Q000378:metabolism*; D046931:Microcystis / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism
chemical_list: D052998:Microcystins; D008610:Menthol; C078588:microcystin
keywords: Microcystin; Microcystis aeruginosa; Protein pattern; d-Menthol