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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Suetsugu, Noriyuki Wagner, Gottfried Mittmann, Franz Wada, Masamitsu Hughes, Jon |
| Description | Author Affiliation: Suetsugu N ( Division of Photobiology, National Institute for Basic Biology, Okazaki 444-8585, Japan.); |
| Abstract | Although most plant species from algae to flowering plants use blue light for inducing phototropism and chloroplast movement, many ferns, some mosses, and green algae use red as well as blue light for the regulation of these responses, resulting in better sensitivity at low light levels. During their evolution, ferns have created a chimeric photoreceptor (phy3 in Adiantum) between phytochrome (phy) and phototropin (phot) enabling them to use red light effectively. We have identified two genes resembling Adiantum PHY3, NEOCHROME1 and NEOCHROME2 (MsNEO1 and MsNEO2), in the green alga Mougeotia scalaris, a plant famous for its light-regulated chloroplast movement. Like Adiantum PHY3, both MsNEO gene products show phytochrome-typical bilin binding and red/far-red reversibility, the difference spectra matching the known action spectra of light-induced chloroplast movement in Mougeotia. Furthermore, both genes rescue red-light-induced chloroplast movement in Adiantum phy3 mutants, indicating functional equivalence. However, the fern and algal genes seem to have arisen independently in evolution, thus providing an intriguing example of convergent evolution. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 38 |
| Volume Number | 102 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2005-09-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Chlorophyta Genetics Evolution, Molecular Photosynthetic Reaction Center Complex Proteins Phylogeny Plant Proteins Adiantum Metabolism Chloroplasts Molecular Sequence Data Phytochrome Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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