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2021 Fiscal Year Final Research Report

Understanding the molecular basis of the miRNA system in the unicellular green alga Chlamydomonas.

Research Project

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Project/Area Number 19K06710
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 44030:Plant molecular biology and physiology-related
Research InstitutionKochi University

Principal Investigator

Yamasaki Tomohito  高知大学, 教育研究部自然科学系理工学部門, 助教 (70512060)

Project Period (FY) 2019-04-01 – 2022-03-31
KeywordsmicroRNA / クラミドモナス / 次世代シークエンサー
Outline of Final Research Achievements

MicroRNAs (miRNAs) are small RNA molecules that repress gene expression. In this study, we aimed to understand the mechanisms of microRNA production and regulation of gene expression in the unicellular green alga Chlamydomonas. As a result, we succeeded in discovering novel components of protein complexes that are necessary for miRNA production and for miRNAs to act on genes. We also established a method for discovering genes that miRNAs act on for the first time in Chlamydomonas, leading to the discovery of genes whose expression is regulated.

Free Research Field

遺伝子発現制御

Academic Significance and Societal Importance of the Research Achievements

miRNAは、動物・植物などの真核生物に広く存在する、遺伝子の発現を制御する重要な分子である。miRNAの作られ方、作用の仕方、そしてその役割は多細胞生物でよく理解されている一方で、単細胞生物における知見はほとんどなかった。本研究によって単細胞緑藻クラミドモナスのmiRNAシステムの一端が明らかになったことで、多細胞生物との相同性や相違性についての解析が進み、miRNAシステムの進化史の謎に迫る基盤を形成することができた。

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Published: 2023-01-30  

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