1988 Fiscal Year Final Research Report Summary
Origins of chloroplasts from three major algae groups as deduced from 5S ribosomal RNA sequence.
| Project/Area Number |
62540483
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
遺伝学
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| Research Institution | HIROSHIMA UNIVERSITY |
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Principal Investigator |
LEE Juing-Yi Research Institute for Nuclear Medicine and Biology, Hiroshima University. Research Associate, 原爆放射能医学研究所, 助手 (20175029)
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| Co-Investigator(Kenkyū-buntansha) |
SATOW Yukio Research Institute for Nuclear Medicine and Biology, Hiroshima University. Profe, 原爆放射能医学研究所, 教授 (70034634)
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| Project Period (FY) |
1987 – 1988
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| Keywords | Rhodophyta / Chlorophyta / Chromophyta / Chloroplast |
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| Research Abstract |
A phylogenic tree of most of the major groups of organisms has been constructed from over the 600 5S ribosomal RNA sequences now available. The tree suggests that there are three major photosynthetic groups in eukaryotes; i.e., red, green and "yellow" algae. Red algae emergae emeged first, and later, green plants (green algae and land plants), and "yellow" algae (brown algae, diatoms, and chrysophyte algae), appoximately in that order.
These tree groups are remotely related to one another. The tree also shows that chloroplast 5S rRNAs from red algae, green plants and Cyanophora are very close to those from Cyanobactera and Chloroxybacteria. These results strongly support the symbiosis theory of chloroplast origins.
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