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Pyrene metabolites by bacterium enhancing cell division of green alga Selenastrum capricornutum

机译:细菌增强绿藻七叶硒的细胞分裂产生的代谢产物

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摘要

Collaborations between multiple microbial species are important for understanding natural clearance and ecological effects of toxic organic contaminants in the environment. However, the interactions between different species in the transformation and degradation of contaminants remain to address. In this study, the effects of pyrene and its bacterial metabolites on the algal growth (Selenastrum capricomuturn) were examined. The specific growth rate of algal cells incubated with bacterial pyrene metabolites (1.18 d 1) was highest among all treatment, followed by the controls (1.07 d 1), treated with pyrene-free bacterial metabolites (1.04 cl ') and those treated with pyrene (0.55 cl 1). G1 phase is the key growth phase for the cells to synthesize biomolecules for subsequent cell division in the cell cycle. Approximately 76.9% of the cells treated with bacterial pyrene metabolites were at the G1 phase and significantly lower than those with the controls (85.3%), pyrene-free bacterial metabolites (85.5%) and pyrene treatment (92.5%). Transcriptomic analysis of algae showed that the expression of 47 ribosomal unigenes was down -regulated by 5 mg L-1 of pyrene, while 308 unigenes related to the preparation of cell division (DNA replication and protein synthesis) were up -regulated by bacterial pyrene metabolites. It indicated that basal metabolism associated with the growth and proliferation of algal cells could be significantly promoted by bacterial pyrene metabolites. Overall, this study suggests a close relationship between algae and bacteria in the transformation and ecological effects of toxic contaminants. (C) 2019 Published by Elsevier B.V.
机译:多种微生物之间的协作对于理解环境中有毒有机污染物的自然清除和生态效应非常重要。然而,污染物在转化和降解中不同物种之间的相互作用仍然有待解决。在这项研究中,研究了of及其细菌代谢产物对藻类生长的影响(Selenastrum capricomuturn)。在所有处理中,与细菌pyr代谢物孵育的藻类细胞的比生长速率最高(1.18 d 1),其次是对照(1.07 d 1),无pyr细菌代谢产物(1.04 cl')和with处理的对照(0.55 cl 1)。 G1期是细胞合成生物分子用于细胞周期后续细胞分裂的关键生长阶段。用细菌pyr代谢物处理的细胞中约有76.9%处于G1期,显着低于对照(85.3%),无pyr细菌代谢物(85.5%)和pyr处理(92.5%)的细胞。藻类的转录组学分析表明,47 mg核糖体单基因的表达被5 mg L-1 down下调,而与细胞分裂制备(DNA复制和蛋白质合成)有关的308个单基因被细菌pyr代谢物上调。 。这表明细菌pyr代谢物可以显着促进与藻类细胞生长和增殖有关的基础代谢。总的来说,这项研究表明藻类和细菌之间的密切关系涉及有毒污染物的转化和生态影响。 (C)2019由Elsevier B.V.发布

著录项

  • 来源
    《The Science of the Total Environment》 |2019年第1期|287-294|共8页
  • 作者单位

    Sun Yat Sen Univ, Sch Life Sci, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, Sch Life Sci, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, Sch Life Sci, Guangzhou 510275, Guangdong, Peoples R China|Sun Yat Sen Univ, Sch Marine Sci, Guangdong Prov Key Lab Marine Resources & Coastal, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, Sch Life Sci, Guangzhou 510275, Guangdong, Peoples R China;

    Sun Yat Sen Univ, Sch Marine Sci, Southern Marine Sci & Engn Guangdong Lab, Zhuhai 519082, Peoples R China|Sun Yat Sen Univ, Sch Marine Sci, Guangdong Prov Key Lab Marine Resources & Coastal, Guangzhou 510275, Guangdong, Peoples R China;

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

    PAHs; Algae; Bacteria; Metabolites; Cell division; Transciiptome;

    机译:PAHS;藻类;细菌;代谢物;细胞分裂;TRANSCIIPTOME;

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