| Blue and red light-induced germination of resting spores in the red-tide diatom Leptocylindrus danicus. | |
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MedLine Citation:
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PMID: 21352236 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Photophysiological and pharmacological approaches were used to examine light-induced germination of resting spores in the red-tide diatom Leptocylindrus danicus. The equal-quantum action spectrum for photogermination had peaks at about 440 nm (blue light) and 680 nm (red light), which matched the absorption spectrum of the resting spore chloroplast, as well as photosynthetic action spectra reported for other diatoms. DCMU, an inhibitor of photosynthetic electron flow near photosystem II, completely blocked photogermination. These results suggest that the photosynthetic system is involved in the photoreception process of light-induced germination. Results of pharmacological studies of the downstream signal transduction pathway suggested that Ca(2+) influx is the closest downstream neighbor, followed by steps involving calmodulin, nitric oxide synthase, guanylyl cyclase, protein-tyrosine-phosphatase, protein kinase C and actin polymerization and translation. |
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Authors:
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Tomoyuki Shikata; Mineo Iseki; Shigeru Matsunaga; Sho-ichi Higashi; Yasuhiro Kamei; Masakatsu Watanabe |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2011-03-28 |
Journal Detail:
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Title: Photochemistry and photobiology Volume: 87 ISSN: 1751-1097 ISO Abbreviation: Photochem. Photobiol. Publication Date: 2011 May-Jun |
Date Detail:
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Created Date: 2011-04-26 Completed Date: 2011-09-15 Revised Date: 2011-11-04 |
Medline Journal Info:
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Nlm Unique ID: 0376425 Medline TA: Photochem Photobiol Country: United States |
Other Details:
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Languages: eng Pagination: 590-7 Citation Subset: IM |
Copyright Information:
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© 2011 The Authors. Photochemistry and Photobiology © 2011 The American Society of Photobiology. |
Affiliation:
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School of Advanced Sciences, Graduate University for Advanced Studies (Sokendai), Hayama, Kanagawa, Japan The Center for the Promotion of Integrated Sciences, Graduate University for Advanced Studies (Sokendai), Hayama, Kanagawa, Japan Spectrography and Bioimaging Facility, NIBB Core Research Facilities, National Institute for Basic Biology, Okazaki, Aichi, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Actins
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metabolism Calcium / metabolism* Calmodulin / metabolism Chloroplasts / metabolism*, radiation effects Culture Techniques Diatoms / metabolism* Diuron / pharmacology Enzyme Inhibitors / pharmacology Guanylate Cyclase / antagonists & inhibitors, metabolism Harmful Algal Bloom Light Light Signal Transduction / radiation effects* Nitric Oxide Synthase / antagonists & inhibitors, metabolism Photochemical Processes / radiation effects Photosynthesis / radiation effects Photosystem II Protein Complex / antagonists & inhibitors, metabolism Polymerization Protein Kinase C / antagonists & inhibitors, metabolism Protein Tyrosine Phosphatases / antagonists & inhibitors, metabolism Spectrum Analysis Spores / metabolism*, radiation effects |
| Chemical | |
Reg. No./Substance:
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0/Actins; 0/Calmodulin; 0/Enzyme Inhibitors; 0/Photosystem II Protein Complex; 330-54-1/Diuron; 7440-70-2/Calcium; EC 1.14.13.39/Nitric Oxide Synthase; EC 2.7.11.13/Protein Kinase C; EC 3.1.3.48/Protein Tyrosine Phosphatases; EC 4.6.1.2/Guanylate Cyclase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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