Intracellular abundance, localization, and enzymatic activity of a saxitoxin biosynthesis enzyme, SxtG, in two sister subclones of the dinoflagellate Alexandrium catenella with extremely different levels of paralytic shellfish toxins [0.03%]
两种石房蛤毒素水平极不相同的亚属藻株中产生麻痹性贝毒的SxtG酶类的胞内丰度、定位及酶活性
Yuko Cho,Shizu Hidema,Takuo Omura et al.
Yuko Cho et al.
Paralytic shellfish poisoning is caused by saxitoxin (STX), and its analogues (paralytic shellfish toxins (PSTs)) produced by marine dinoflagellates. SxtA and SxtG are the most essential enzymes in STX biosynthesis. Previous studies investi...
Temperature-dependent akinete formation strategies of the harmful cyanobacterium Dolichospermum circinale [0.03%]
温度依赖的有害蓝藻鱼腥藻闭囊细胞形成策略
Chae-Hong Park,Dae-Ryul Kwon,Keonhee Kim et al.
Chae-Hong Park et al.
Cyanobacteria from the orders Nostocales and certain Stigonematales form akinetes, spore-like dormant cells that allow them to survive adverse environmental conditions. Temperature is known to be one of the key factors affecting akinete for...
Production of extracellular superoxide contributes to photosynthesis via elimination of reducing power and regeneration of NADP+ in the red-tide-forming raphidophyte Chattonella marina complex [0.03%]
外源性超氧阴离子的生成通过消除还原力和再生NADP+参与 Chattonella marina 红潮甲藻属物种光合作洋红素合成
Koki Yuasa,Takayoshi Ichikawa,Yuma Ishikawa et al.
Koki Yuasa et al.
The raphidophyte Chattonella marina complex (hereafter Chattonella) consists of noxious red-tide-forming algae that are damaging to fish farms. Chattonella produces and secretes large amounts of the superoxide anion (•O2-), and the product...
Nitrogen availability controls response of microcystin concentration to phosphorus reduction: Evidence from model application to multiple lakes [0.03%]
氮有效性控制了微囊藻毒素浓度对于磷减少的响应--模式应用于多个湖泊的证据
Charlotte Schampera,Ferdi L Hellweger
Charlotte Schampera
Microcystis blooms are a global contemporary problem and the mechanisms underlying strain-level ecology (e.g. toxigenic fraction) and toxin (microcystin, MC) production are not sufficiently understood. Recent research suggests that MC synth...
Nutrient availability in a freshwater-to-marine continuum: Cyanobacterial blooms along the Lake Okeechobee Waterway [0.03%]
淡水至海洋生态系统的连续体中营养物质的可得性：奥基乔比湖水道中的蓝藻水华现象
Brian E Lapointe,Rachel A Brewton,Malcolm N McFarland et al.
Brian E Lapointe et al.
Water from the Lake Okeechobee watershed historically flowed south through the Everglades. Hydrologic alterations created the Lake Okeechobee Waterway, where lake water is periodically shunted east to the St. Lucie Estuary (C-44 canal) and ...
Accumulation and depuration of 4,5-dihydro-KmTx2 from Karlodinium veneficum in the bivalves, Mercenaria mercenaria and Sinonovacula constricta [0.03%]
席氏无毒甲藻4,5-二氢KmTx2的聚集和消除：拟加重壳贝和美洲文蛤中的实验研究
Yanrong Li,Rong Chen,Zhujun Zhu et al.
Yanrong Li et al.
Bivalves (e.g., clams, oysters, mussels, scallops) are a significant part of the global diet and are harvested for their nutritional value, but as filter feeders they are susceptible to the accumulation of toxins produced by certain species...
Investigating the role of allelochemicals in the interaction between Alexandrium monilatum and other phytoplankton species [0.03%]
探明短甲藻与其它浮游植物种间关系的化感化学物质的作用机制
Sylvain Gaillard,Hamish J Small,Nour Ayache et al.
Sylvain Gaillard et al.
Species of the dinoflagellate genus Alexandrium can release bioactive extracellular compounds with allelopathic effects (e.g., immobilization, inhibition of growth, photosynthesis or lysis) towards other phytoplanktonic organisms. In the lo...
Risk assessment of toxic cyanobacterial blooms in recreational waters: A comparative study of monitoring methods [0.03%]
有毒蓝藻水华的风险评估：监测方法比较研究
Quirijn J F Schürmann,Petra M Visser,Susan Sollie et al.
Quirijn J F Schürmann et al.
Toxic cyanobacterial blooms impose a health risk to recreational users, and monitoring of cyanobacteria and associated toxins is required to assess this risk. Traditionally, monitoring for risk assessment is based on cyanobacterial biomass,...
Comparative Study
Harmful algae. 2024 Sep:138:102683. DOI:10.1016/j.hal.2024.102683 2024
An effective algaecide for the targeted destruction of Karenia brevis [0.03%]
一种能够有效杀死有害 algae Karenia brevis 的除藻剂
Istiak Hossain,Briana Mays,Sydney L Hanhart et al.
Istiak Hossain et al.
We address the targeted destruction of Karenia brevis using the algaecide calcium peroxide, in tandem with the flocculation and sinking of the species. The specific aspect of the approach is the incorporation of the algaecide within the flo...
Toxic effects of the emerging Alexandrium pseudogonyaulax (Dinophyceae) on multiple trophic levels of the pelagic food web [0.03%]
新兴藻类Alexandrium pseudogonyaulax对水体食物网各营养级的毒性效应
Kristof Möller,Urban Tillmann,Magdalena Pöchhacker et al.
Kristof Möller et al.
The dinoflagellate Alexandrium pseudogonyaulax, a harmful algal bloom species, is currently appearing in increasing frequency and abundance across Northern European waters, displacing other Alexandrium species. This mixotrophic alga produce...