Bioscience, Biotechnology, and Biochemistry
Online ISSN : 1347-6947
Print ISSN : 0916-8451
Microbiology & Fermentation Technology Regular Papers
Growth-Phase Dependent Variation in Photosynthetic Activity and Cellular Protein Expression Profile in the Harmful Raphidophyte Chattonella antiqua
Xuchun QIU, Yohei SHIMASAKI, Michito TSUYAMA, Taku YAMADA, Rie KUWAHARA, Mayumi KAWAGUCHI, Masato HONDA, Hiroaki GUNJIKAKE, Rumana TASMIN, Motoyuki SHIMIZU, Yusuke SATO, Yoko KATO-UNOKI, Takashi NAKASHIMA, Tadashi MATSUBARA, Yasuhiro YAMASAKI, Hirofumi ICHINOSE, Hiroyuki WARIISHI, Tsuneo HONJO, Yuji OSHIMA
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Keywords: Chattonella antiqua, growth potential, maximum quantum yield of photosystem II, physiological status, proteomic analysis
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2013 Volume 77 Issue 1 Pages 46-52

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Abstract

This study investigated temporal variations in the potential maximum quantum yield of photosystem II (Fv/Fm ratio) and growth-phase dependent cellular protein expressions of Chattonella antiqua under laboratory conditions. Despite the culture conditions, significant positive correlations between the Fv/Fm ratio and daily growth rate were observed. Threshold Fv/Fm ratios associated with positive cell growth were calculated to be >0.44, >0.44, and >0.37, and those associated with active cell growth (growth rate >0.5 div. d−1) were >0.58, >0.60, and >0.49 under control culture, low nutrient and intense light conditions, respectively. Proteome profiles obtained by two-dimensional gel electrophoresis (2-DE) indicated that 42 protein spots were differentially expressed at various growth phases of C. antiqua, which indicates changes in cellular physiological status throughout the growth cycle, and suggests that oxygen evolving enhancer 1 and 2-cysteine peroxiredoxin play roles in maintaining the positive growth of C. antiqua.

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© 2013 by Japan Society for Bioscience, Biotechnology, and Agrochemistry
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