Abstract
Chloroplasts relocate their positions in a cell in response to the intensity of incident light, moving to the side wall of the cell to avoid strong light, but gathering at the front face under weak light to maximize light interception. Here, Arabidopsis thaliana mutants defective in the avoidance response were isolated, and the mutated gene was identified as NPL1 (NPH-like 1), a homolog of NPH1 (nonphototropic hypocotyl 1), a blue light receptor used in phototropism. Hence, NPL1 is likely a blue light receptor regulating the avoidance response under strong light.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Alleles
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Arabidopsis / genetics
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Arabidopsis / physiology*
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Arabidopsis / ultrastructure
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Arabidopsis Proteins*
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Cell Membrane / metabolism
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Chloroplasts / physiology*
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Genes, Plant
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Light*
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Movement
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Mutation
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Phosphoproteins / chemistry
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Phosphoproteins / physiology
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Phototropism
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Plant Leaves / metabolism
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Plant Proteins / chemistry
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Plant Proteins / genetics*
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Plant Proteins / physiology*
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Plant Structures / metabolism
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Protein Serine-Threonine Kinases
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Protein Structure, Tertiary
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RNA, Messenger / genetics
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RNA, Messenger / metabolism
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RNA, Plant / genetics
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RNA, Plant / metabolism
Substances
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Arabidopsis Proteins
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PHOT2 protein, Arabidopsis
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Phosphoproteins
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Plant Proteins
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RNA, Messenger
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RNA, Plant
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NPH1 protein, Arabidopsis
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Protein Serine-Threonine Kinases