• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Harmful Algae >Insights into the relationship between colony formation and extracellular polymeric substances (EPS) composition of the cyanobacterium Microcystis spp
【24h】

Insights into the relationship between colony formation and extracellular polymeric substances (EPS) composition of the cyanobacterium Microcystis spp

机译：深入了解蓝藻微囊藻属菌落的菌落形成与细胞外聚合物（EPS）组成之间的关系

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Extracellular polymeric substances (EPS) were considered as fundamental substances in colony formation; however, the understanding of EPS composition remains limited. This study analyzed the content and composition of EPS fractions (soluble EPS, loosely bound EPS, and tightly bound EPS) of four Microcystis species from laboratory cultures in both unicellular and colonial morphologies, as well as colonies collected during Microcystis blooms, using fluorescence excitation - emission matrix spectroscopy combined with parallel factor analysis (EEM-PARAFAC). This method enables to make insight into protein-like and humic acid-like components but cannot detect polysaccharides. The EPS was successfully categorized into three humic acid-like components (C1 - C3) and a protein-like component (C4). Component Cl was discovered to be involved in colony formation and colony size growth of Microcystis. EPS content varied among Microcystis morphospecies, such as M. aeruginosa, M. wesenbergii and M. ichthyoblabe, and this was significantly affected by the environmental constraints rather than the morphospecies. The proportion of Cl relating to larger colony size was negatively correlated to temperature and concentrations of TN and TP. The tightly bound EPS directly promoted colony formation, but the soluble EPS or loosely bound EPS alone did not induce colony formation in Microcystis. These results advanced the current knowledge on the chemical materials involved in the colony formation of Microcystis and provided new clues in unicellular-multicellular transformation as well as colonial morphology changes in Microcystis.
机译：细胞外聚合物（EPS）被认为是菌落形成的基本物质。但是，对EPS组成的理解仍然有限。这项研究使用荧光激发分析了实验室培养物中四种微囊藻物种在单细胞和菌落形态下以及微囊藻开花期间收集的菌落的EPS组分的含量和组成（可溶性EPS，松散结合的EPS和紧密结合的EPS）-发射矩阵光谱结合并行因子分析（EEM-PARAFAC）。这种方法可以深入了解类蛋白质和类腐殖酸成分，但无法检测到多糖。 EPS已成功分类为三个腐殖酸样组分（C1-C3）和一个蛋白样组分（C4）。发现组分C1与微囊藻的集落形成和集落大小生长有关。在微囊藻的形态种类中，如铜绿假单胞菌，韦森伯格氏菌和ichthyoblabe菌，EPS含量各不相同，这受环境限制而不是形态种类的影响很大。与较大菌落大小有关的Cl的比例与温度以及TN和TP的浓度呈负相关。紧密结合的EPS直接促进集落形成，但是单独的可溶性EPS或松散结合的EPS不会诱导微囊藻的集落形成。这些结果提高了目前有关微囊藻菌落形成的化学物质的知识，并为微囊藻的单细胞多细胞转化以及菌落形态变化提供了新的线索。

著录项

  • 来源
    《Harmful Algae》 |2019年第3期|34-41|共8页
  • 作者

    Xiao Man; Li Ming; Duan Pengfei; Qu Zhi; Wu Haiming;

  • 作者单位

    Griffith Univ, Australian Rivers Inst, 170 Kessels Rd, Nathan, Qld 4111, Australia;

    Nanyang Normal Univ, Collaborat Innovat Ctr Water Secur Water Source R, Nanyang 473061, Peoples R China|Northwest A&F Univ, Coll Resources & Environm, Yangling 712100, Shaanxi, Peoples R China;

    Nanyang Normal Univ, Collaborat Innovat Ctr Water Secur Water Source R, Nanyang 473061, Peoples R China;

    Northwest A&F Univ, Coll Resources & Environm, Yangling 712100, Shaanxi, Peoples R China;

    Northwest A&F Univ, Coll Resources & Environm, Yangling 712100, Shaanxi, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Colonial morphology change; Extracellular polymeric substances; Humic acid-like component; Microcystis;

    机译：殖民地形态变化;细胞外聚合物;腐殖酸样成分;微囊藻;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号