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Photosynthesis Inhibition of Pyrogallol Against the Bloom-Forming Cyanobacterium Microcystis aeruginosa TY001

机译:邻苯三酚对形成水华的铜绿微囊藻TY001的光合作用抑制

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摘要

Severe eutrophication and harmful cyanobacterial blooms of freshwater ecosystems has been a persistent environmental topic in recent decades. Allelochemical inhibition has received great attention in aquatic ecology and quality management. This study investigates the growth and full photosynthesis performance of pyrogallol on Microcystis aeruginosa TY001. The growth and pigment contents of M. aeruginosa were seriously inhibited by pyrogallol. The relative expression levels of the nblA gene were up-regulated under pyrogallol treatments. Unexpectedly, the relative transcript abundance of the psaB and psbA genes significantly increased compared with the control, but the chlorophyll fluorescence parameters of M. aeruginosa TY001 decreased significantly, except at 1 mg L-1 pyrogallol. In conclusion, the target sites of pyrogallol's toxic effect on the PSII of M. aeruginosa TY001 were mainly on the active reaction centers and the electron transport at the acceptor side.
机译:近几十年来,淡水生态系统的严重富营养化和有害的蓝细菌繁殖一直是一个持续存在的环境问题。化感化学抑制作用在水生生态学和质量管理中受到了极大的关注。本研究研究了邻苯三酚在铜绿微囊藻TY001上的生长和全光合作用。邻苯三酚严重抑制了铜绿假单胞菌的生长和色素含量。在邻苯三酚处理下,nblA基因的相对表达水平上调。出乎意料的是,与对照相比,psaB和psbA基因的相对转录丰度显着增加,但是绿脓杆菌TY001的叶绿素荧光参数显着降低,除了在1 mg L-1邻苯三酚外。综上所述,邻苯三酚对铜绿假单胞菌TY001的PSII的毒性作用的靶位主要在活性反应中心和电子在受体侧的传递。

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