Effects of environmental factors on starch composition in <I>Chlorella</I>
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- Izumo Asako
- School of Life Science, Tokyo University of Pharmacy and Life Science
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- Oyama Yasunori
- School of Life Science, Tokyo University of Pharmacy and Life Science
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- Fujiwara Shoko
- School of Life Science, Tokyo University of Pharmacy and Life Science
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- Sakurai Aya
- Department of Biological Production, Akita Prefectural University
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- Nakamura Yasunori
- Department of Biological Production, Akita Prefectural University
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- Tsuzuki Mikio
- School of Life Science, Tokyo University of Pharmacy and Life Science
Bibliographic Information
- Other Title
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- クロレラのデンプン組成に及ぼす環境要因の影響
Abstract
The green alga Chlorella contains a storage polysaccharide, starch, which consists of amylose and amylopectin. Effects of various environmental factors during the growth on the intercellular content and structure of starch were investigated. When high CO2 (3%)-grown cells were transferred to low CO2 ( 0.04%, air level ) condition, pyrenoid and pirenoid starch developed, and starch content and the ratio of amylose to amylopectin increased. The chain length distribution of amylopectin was also affected by CO2 concentration during the growth. After NH4+ addition or in the dark, starch content decreased and the rate of amylose to amylopectin increased. Furthermore, expression of granule-bound starch synthase (GBSS), which is considered to be responsible mainly for the amylose synthesis, was determined. The result suggests that GBSS expression is upregulated at the transcritional level in the low CO2-condition.
Journal
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- Plant and Cell Physiology Supplement
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Plant and Cell Physiology Supplement 2005 (0), 211-211, 2005
The Japanese Society of Plant Physiologists
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Details 詳細情報について
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- CRID
- 1390001205626717696
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- NII Article ID
- 130006986824
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed