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Effect of fluid motion on colony formation in Microcystis aeruginosa
  • ISSN号:1003-5427
  • 期刊名称:《湖泊科学》
  • 时间:0
  • 分类:TS218[轻工技术与工程—粮食、油脂及植物蛋白工程;轻工技术与工程—食品科学与工程] X524[环境科学与工程—环境工程]
  • 作者机构:[1]College of Environment, Hohai University, Nanjing 210098, P. R. China, [2]School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, P. R. China, [3]National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Hohai University, Nanjing 210098, P. R. China, [4]Zhenjiang Academy of Urban Planning and Design, Zhenjiang 212001, P. R. China
  • 相关基金:This work was supported by the National Natural Science Foundation of China (Grant No. 50979028) and the Special Fund of Research for Public Welfare Industry of the Ministry of Water Resources of China (Grant No. 200801065).
中文摘要:

Microcystis aeruginosa,通常在自然条件下面发生在大殖民地,主要在实验室文化作为单个房间存在。在海藻的花蕾在 Microcystis aeruginosa 和他们的角色涉及殖民地形成的机制仍然保持未知。在这研究,基于以前的研究调查结果,那个液体运动可以在绿水藻刺激殖民地形成,文化实验在流动率,温度,光,和营养素被控制的一个圆形的水房间在无寄生物的条件下面被进行。Microcystis aeruginosa 的细胞的数字,细胞的数字每殖民地,和在各种各样的生长阶段的殖民特征被观察并且测量。当有液体时,结果显示在 Microcystis aeruginosa 的殖民地形成,没在停滞条件下面被观察,是明显的运动,每以 35 cm/s 的流动率到达他们的山峰价值的殖民地房间每到达 120 的最大的殖民地和在到房间和平均数的全部的数字的殖民形式的房间的数字的比例与房间的数字数。基于殖民地形成过程的分析,液体运动在 lag 生长阶段在 Microcystis aeruginosa 刺激殖民地形成,当时涌出并且在指数的生长的殖民地分阶段执行的使崩溃。在 lag 生长阶段的刺激效果可能对在一系列生理的过程的液体运动的参与可归因,包括多糖的踪迹元素和合成和分泌物的举起。另外,在 lag 生长阶段展出典型殖民特征的试验性的组被发现在以后的阶段有更高的房间生物资源。

英文摘要:

Microcystis aeruginosa, generally occurring in large colonies under natural conditions, mainly exists as single cells in laboratory cultures. The mechanisms involved in colony formation in Microcystis aeruginosa and their roles in algal blooms remain unknown. In this study, based on previous research findings that fluid motion may stimulate the colony formation in green algae, cul~are experiments were conducted under axenic conditions in a circular water chamber where the flow rate, temperature, light, and nutrients were controlled. The number of cells of Microcystis aeruginosa, the number of cells per colony, and the colonial characteristics in various growth phases were observed and measured. The results indicated that the colony formation in Microcystis aeruginosa, which was not observed under stagnant conditions, was evident when there was fluid motion, with the number of cells per largest colony reaching 120 and the proportion of the number of cells in colonial form to the total number of cells and the mean number of cells per colony reaching their peak values at a flow rate of 35 crn/s. Based on the analysis of colony formation process, fluid motion stimulates the colony formation in Microcystis aeruginosa in the lag growth phase, while flushes and disaggregates the colonies in the exponential growth phase. The stimulation effect in the lag growth phase may be attributable to the involvement of fluid motion in a series of physiological processes, including the uptake of trace elements and the synthesis and secretion of polysaccharides. In addition, the experimental groups exhibiting typical colonial characteristics in the lag growth phase were found to have higher cell biomass in the later phase.

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期刊信息
  • 《湖泊科学》
  • 北大核心期刊(2011版)
  • 主管单位:中国科学院
  • 主办单位:中国科学院南京地理与湖泊研究所 中国海洋湖沼学会
  • 主编:沈吉
  • 地址:南京市北京东路73号
  • 邮编:210008
  • 邮箱:jlakes@niglas.ac.cn
  • 电话:025-86882041 86882040
  • 国际标准刊号:ISSN:1003-5427
  • 国内统一刊号:ISSN:32-1331/P
  • 邮发代号:28-201
  • 获奖情况:
  • 中国科技核心期刊,中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘(网络版),美国工程索引,美国地质文献预评数据库,美国剑桥科学文摘,美国生物科学数据库,英国动物学记录,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版)
  • 被引量:16668