Functional conservation of clock-related genes in flowering plants: overexpression and RNAi analyses of the circadian rhythm in the monocotyledon <I>Lemna gibba</I>

DOI

Bibliographic Information

Other Title
  • 単子葉植物ウキクサを用いた植物における概日時計遺伝子機能の保存性の解析

Abstract

In flowering plants, the circadian clock is involved in the regulation of various physiological phenomena, including growth, leaf movement, stomata opening, and floral transitions. Molecular mechanisms underlying the circadian clock have been identified using Arabidopsis; the functions and genetic networks of a number of clock-related genes, including CCA1, LHY, TOC1, GI, and ELF3 have been analyzed. The degree to which clock systems are conserved among flowering plants, however, is still unclear. We previously isolated homologs for Arabidopsis clock-related genes from monocotyledon Lemna plants. Here we report the physiological roles of these L. gibba genes (LgLHYH1, LgLHYH2, LgGIH1, and LgELF3H1) in the circadian system. We studied the effects of overexpression and RNA interference of these genes on the rhythmic expression of morning- and evening-specific reporters. These experiments suggested that the precise role of each clock gene may have diverged in the clock systems of Lemna and Arabidopsis.

Journal

Details 詳細情報について

  • CRID
    1390001205633045376
  • NII Article ID
    130006995032
  • DOI
    10.14841/jspp.2008.0.0616.0
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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