Amicarbazone (BAY-MKH3586; BAY314666) is a potent PSII inhibitor, disrupting photosynthetic electron transport by binding to the Qb domain of photosystem II. This broad-spectrum herbicide is effective through foliar and root application, showcasing rapid absorption and translocation. However, its effectiveness can be compromised by common PSII inhibitor resistance. With an IC50 value indicating high potency, amicarbazone leads to chlorosis, stunted growth, tissue necrosis, and death in sensitive plants. Despite these severe effects, it exhibits good selectivity and outperforms atrazine as a herbicide, allowing for its application at lower doses compared to traditional photosynthetic inhibitors.
Tenuazonic acid is a putative nonhost-selective mycotoxin isolated from Alternaria alternate. Tenuazonic acid blocks electron transport beyond primary quinone acceptor (QA) by interacting with D1 protein and it is a broad-spectrum and effective photosyste
Cabraleadiol displays antimycobacterial activity against Mycobacterium tuberculosis, it also is weakly cytotoxic to a breast cancer (BC) cell line. Cabraleadiol inhibits photosystem II (PS II) and induces the appearance of small G band which is related wi
Encecalin and demethylencecalin are major phytotoxic compounds isolated from Helianthella quinquenervis (Hook) A Gray (Asteraceae), they inhibit photosystem II (from water to 2,5-dibromo-3-methyl-6-isopropyl-1,4 p-benzo-quinone).They retard seed germinati
Chlorophyll b 是一种口服活性的四吡咯衍生物和色素,可从植物、藻类等光合生物中提取。它作为氢供体,能够提升Glutathione水平,且具备抗氧化活性。在光系统 II 中,Chlorophyll b 能功能性替代叶绿素 a 参与光合作用,并减少Cisplatin(HY-17394)引起的DNA损伤、染色体不稳定性和氧化应激。Chlorophyll b 主要用于研究植物光合作用机制。