| Conidiation rhythm and light entrainment in superoxide dismutase mutant in Neurospora crassa. | |
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MedLine Citation:
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PMID: 18084778 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Conidial formation in the filamentous fungus Neurospora crassa is regulated by nutritional conditions, light, and the circadian clock. We found that a sod-1 mutant, with a defective superoxide dismutase catalyzing the conversion of superoxide to hydrogen peroxide, had a slightly shorter period length than the wild type and clear conidial banding similar to a mutant of band (bd). However, unlike the bd mutant, the sod-1 mutant could sustain conidial banding with light pulses on a nutrient-rich medium, which involved an enhancement of the light-induced transcription of frequency (frq). sod-1 was hypersensitive to entrainment of the conidiation rhythm by light in race tubes. Furthermore, a frq(10); sod-1 double mutant showed conidiation rhythm in darkness and could be synchronized to light/dark cycles by the masking effect of light. These genetic analyses suggested that intracellular reactive oxygen species (ROS) act on circadian conidiation via multiple circadian clocks and output pathways. |
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Authors:
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Yusuke Yoshida; Takashi Maeda; Bumkyu Lee; Kohji Hasunuma |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2007-12-13 |
Journal Detail:
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Title: Molecular genetics and genomics : MGG Volume: 279 ISSN: 1617-4615 ISO Abbreviation: Mol. Genet. Genomics Publication Date: 2008 Feb |
Date Detail:
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Created Date: 2008-01-11 Completed Date: 2008-04-24 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101093320 Medline TA: Mol Genet Genomics Country: Germany |
Other Details:
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Languages: eng Pagination: 193-202 Citation Subset: IM |
Affiliation:
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Kihara Institute for Biological Research, Graduate School of Integrated Science, Yokohama City University, 641-12 Maioka-cho, Totsuka-ku, Yokohama, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Blotting, Northern Circadian Rhythm* Fungal Proteins / genetics Gene Expression Regulation, Fungal / radiation effects Mutation* Neurospora crassa / genetics, physiology, radiation effects* RNA, Messenger / genetics, metabolism Reactive Oxygen Species / metabolism Reverse Transcriptase Polymerase Chain Reaction Spores, Fungal / genetics, growth & development, radiation effects* Superoxide Dismutase / genetics* |
| Chemical | |
Reg. No./Substance:
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0/FRQ protein, Neurospora crassa; 0/Fungal Proteins; 0/RNA, Messenger; 0/Reactive Oxygen Species; EC 1.15.1.1/Superoxide Dismutase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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