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杀线虫真菌Sr18发酵液对松材线虫超微结构的影响 被引量:1
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作者 王修清 王倩 +3 位作者 王亚萍 冯欣 孙建华 孟庆恒 《北京林业大学学报》 CAS CSCD 北大核心 2017年第7期69-75,共7页
Sr18真菌是一株自主分离获得的具有广谱杀线虫活性的生防菌。为探明该菌的杀线虫作用机理,以松材线虫为靶标,借助场发射高分辨扫描电镜及透射电镜,对1/2浓度的Sr18发酵液小分子活性组分处理后的线虫及未处理的正常线虫进行了超微观察。... Sr18真菌是一株自主分离获得的具有广谱杀线虫活性的生防菌。为探明该菌的杀线虫作用机理,以松材线虫为靶标,借助场发射高分辨扫描电镜及透射电镜,对1/2浓度的Sr18发酵液小分子活性组分处理后的线虫及未处理的正常线虫进行了超微观察。高分辨率扫描电镜观察结果表明,小分子物质对松材线虫头部、体壁和尾部均有损伤,并观察到内容物外溢的现象。透射电镜观察结果显示,线虫表皮和体腔分离,细胞核受损严重,形状不规则,粗面内质网核糖体聚集,线粒体空泡样变,肌纤维受损。这些现象从形态结构角度证实了该发酵液小分子活性成分对线虫的损伤是整体性的毒杀作用,排除了表面触杀的机制。这为进一步揭示Sr18的杀线虫机理以及线虫生防制剂的开发提供了重要理论依据。 展开更多
关键词 Sr18菌 松材线虫 小分子活性组分 超微结构
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Realizing high-performance ternary organic solar cell with thick active layer via incorporating a liquid crystalline small molecule as a third component
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作者 Alex K.-Y. Jen 《Science China Chemistry》 SCIE EI CAS CSCD 2017年第4期435-436,共2页
In the past two decades, organic solar cells (OSCs) have at- tracted significant attention owing to their merits of achieving light-weight, flexible, low-cost devices [1,2]. Ternary OSC as an efficient way to improv... In the past two decades, organic solar cells (OSCs) have at- tracted significant attention owing to their merits of achieving light-weight, flexible, low-cost devices [1,2]. Ternary OSC as an efficient way to improve the power conversion efficiencies (PCEs) of OSCs has inspired great interest from researchers to investigate ternary OSCs and result in many efficient de- vices. Ternary OSCs allow collecting high- and low-energy photons by separated semiconductors in a single active layer to minimize the thermalization loss and broaden absorption range to improve the performance of OSCs. However, most reported ternary OSCs only have active layer of about 100 nm in thickness. 展开更多
关键词 Bins Butyric acid CARBOXYLATION Coherent scattering Crystalline materials Hole mobility Molecules Organic solar cells Thick films X ray scattering
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