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题名: INFLUENCE OF CLINOROTATION ON CELLULAR STRUCTURE, PHOTOSYNTHETIC ACTIVITY, CARBOHYDRATE AND ASTAXANTHIN METABOLISM OF HAEMATOCOCCUS PLUVIALIS
作者: Zhang, Yu1, 2; Li, Xiao-yan1; Ge, Hong-Mei1; Wu, Li1; Xia, Ling1; Wang, Gao-hong1; Hu, Chun-xiang1; Liu, Yong-ding1
通讯作者: Hu, CX (reprint author), Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.
关键词: clinorotation ; Haematococcus pluvialis ; sucrose ; trehalose ; astaxanthin ; carbohydrate metabolism
刊名: FRESENIUS ENVIRONMENTAL BULLETIN
发表日期: 2012
卷: 21, 期:8, 页:2017-2026
收录类别: SCI
文章类型: Article
部门归属: [Zhang, Yu; Li, Xiao-yan; Ge, Hong-Mei; Wu, Li; Xia, Ling; Wang, Gao-hong; Hu, Chun-xiang; Liu, Yong-ding] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Zhang, Yu] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: Strategic Pilot Project of Chinese Academy of Sciences [XDA04074002]
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
摘要: The effects of 20 days clinorotation on cellular structure, photosynthetic activity, and the carbohydrate and astaxanthin metabolism of Haematococcus pluvialis provide insights in algal cell adaption. Light micrographs showed the cell shape appeared abnormal and the volume became smaller than the ground control. Ultrastructure analysis revealed that the starch grains seemed smaller and the thylakoid membranes were more randomly distributed and loosened after 20 days of clinorotation. The decreased photosystem II (PSII) photochemical fluorescence efficiency (Fv/Fm) indicated a slow-down of photosynthetic capacity under clinorotation, most likely related to the chloroplast structure changes. The smaller starch grains, together with the decreased starch content were probably either due to an increased hydrolysis of amylase, or a decreased starch synthesis by ADP-glucose pyrophosphorylase during clinorotation. The increased sucrose and trehalose played a protective role in algal cell's accommodation to early clinorotation. However this led to a decrease of glucose and fructose utilized for the synthesis of protective disaccharides. In the middle phase of clinorotation (i.e. the acclimation period), a compensatory synthesis of chlorophyll, glucose and fructose and a reduction of sucrose and trehalose were observed. From the decreased anabolism of astaxanthin, it could be deduced that the clinorotation environment caused a decreased astaxanthin metabolism in Haematococcus pluvialis.
英文摘要: The effects of 20 days clinorotation on cellular structure, photosynthetic activity, and the carbohydrate and astaxanthin metabolism of Haematococcus pluvialis provide insights in algal cell adaption. Light micrographs showed the cell shape appeared abnormal and the volume became smaller than the ground control. Ultrastructure analysis revealed that the starch grains seemed smaller and the thylakoid membranes were more randomly distributed and loosened after 20 days of clinorotation. The decreased photosystem II (PSII) photochemical fluorescence efficiency (Fv/Fm) indicated a slow-down of photosynthetic capacity under clinorotation, most likely related to the chloroplast structure changes. The smaller starch grains, together with the decreased starch content were probably either due to an increased hydrolysis of amylase, or a decreased starch synthesis by ADP-glucose pyrophosphorylase during clinorotation. The increased sucrose and trehalose played a protective role in algal cell's accommodation to early clinorotation. However this led to a decrease of glucose and fructose utilized for the synthesis of protective disaccharides. In the middle phase of clinorotation (i.e. the acclimation period), a compensatory synthesis of chlorophyll, glucose and fructose and a reduction of sucrose and trehalose were observed. From the decreased anabolism of astaxanthin, it could be deduced that the clinorotation environment caused a decreased astaxanthin metabolism in Haematococcus pluvialis.
关键词[WOS]: ELECTRON MICROSCOPY ; GENE-EXPRESSION ; TREHALOSE ; MICROGRAVITY ; GROWTH ; RESPONSES ; ACCUMULATION ; DESICCATION ; PROKARYOTES ; APPARATUS
语种: 英语
WOS记录号: WOS:000309326000003
ISSN号: 1018-4619
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/17286
Appears in Collections:藻类生物学及应用研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Zhang, Yu; Li, Xiao-yan; Ge, Hong-Mei; Wu, Li; Xia, Ling; Wang, Gao-hong; Hu, Chun-xiang; Liu, Yong-ding.INFLUENCE OF CLINOROTATION ON CELLULAR STRUCTURE, PHOTOSYNTHETIC ACTIVITY, CARBOHYDRATE AND ASTAXANTHIN METABOLISM OF HAEMATOCOCCUS PLUVIALIS,FRESENIUS ENVIRONMENTAL BULLETIN,2012,21(8):2017-2026
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