| 雨生红球藻的细胞周期初探 |
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| 引用本文： | 刘建国,殷明焱,张京浦,孟昭才,W F Bourne.雨生红球藻的细胞周期初探[J].海洋与湖沼,2000,31(2):145-150. |
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| 作者姓名： | 刘建国 殷明焱 张京浦 孟昭才 W F Bourne |
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| 作者单位： | 1. 中国科学院海洋研究所青岛266071
2. Division of Biological Sciences, Coventry University, Coventry CV1 5FB, UK |
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| 基金项目： | 国家自然科学基金!39500114，国际科学基金（IFS）资助项目!AA／11043，山东省科学技术委员会资助项目!9565 |
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| 摘 要： | 于１９９７年在青岛利用显微镜连续观察技术研究了雨生红球藻的细胞繁殖方式和动力学。结果表明，该藻细胞周期分为流动和不动２个阶段。每一阶段主要以无性生殖产生孢子的方式完成增殖。正常条件下游动细胞主要产生２、４个，偶尔产生２、４个，偶尔产生８个游动孢子，游孢子从孢子囊释放后为游动细胞。环境不适时流动细胞以及流动孢子失去鞭毛转入不动阶段。不动细胞主要形成４、８个，偶尔也能形成２０多个不动孢子，该过程不一定
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| 关 键 词： | 红球藻 细胞周期 游动细胞 不动细胞 不动孢子 |
| 收稿时间： | 1998/1/19 0:00:00 |
| 修稿时间： | 1998/8/29 0:00:00 |
STUDIES OF CELL CYCLE IN HAEMATOCOCCUS PLUVIALIS |
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| LIU Jian-guo,YIN Ming-yan,ZHANG Jing-pu,MENG Zhao-cai and W F Bourne.STUDIES OF CELL CYCLE IN HAEMATOCOCCUS PLUVIALIS[J].Oceanologia Et Limnologia Sinica,2000,31(2):145-150. |
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| Authors: | LIU Jian-guo YIN Ming-yan ZHANG Jing-pu MENG Zhao-cai and W F Bourne |
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| Institution: | Institute of Oceanology, The Chinese Academy of Sciences, Qingdao, 266071;Institute of Oceanology, The Chinese Academy of Sciences, Qingdao, 266071;Institute of Oceanology, The Chinese Academy of Sciences, Qingdao, 266071;Institute of Oceanology, The Chinese Academy of Sciences, Qingdao, 266071;Division of Biological Sciences, Coventry University, Coventry CV1 5FB, UK |
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| Abstract: | The cell cycle of Haematococcus pluvialis, a biflagellared unicellular green alga and a potential source of natural astaxanthin, was studied out microscopically using camera, CCD color-TV video camera and recorder system. The cell cycle can be divided into two stages (motile and non-motile stage), and all the algae can be classified into four forms of cells: motile cell, non-motile cell, aplanospore and zoospore, while the terms as flagellated cell, palmella akinete, red cell and green cell often appeared in many papers are excluded with different reasons. The main proliferation of cells is accomplished by asexual reproduction both at the motile stage and non-motile stage under normal culture conditions. The motile cells mainly produce 2 zoospores, sometime 4, and occasionally 8 by asexual reproduction. The motile cells and zoospores lose their flagella, stop moving, turn into non-motile cells when exposured to stress environmental conditions. The non-motile cells can produce new cells by asexual reproduction at the non-motile stage even if they are exposed to unfavorable growth conditions. The non-motile cells usually produce 4 or 8 aplanospores, occasionally more than 20 aplanospores were checked in one sporangium. When the culture condition is suitable for Haematococcus pluvialis growth, nonmotile cells with large volume produce 16 zoospores and the small ones produce 8 with unequal cell division speeds as 3, 5, 6, 7'; zoospores are often checked in one sporangium. Vegetative reproduction was observed occasionally both in motile cells by direct division and some small non-motile cells by budding. However, sexual reproduction may exist as initial part of isogamy process was monitored once under the laboratory culture condition. Based on the above observation, a primary cell cycle of Haematococcus pluvialis is suggested. |
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| Keywords: | Haematococcus pluvialis Cell cycle Motile cell Non-motile cell Zoospore Aplanospore |
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