植物の生殖成長相への転換を制御するクロマチンリモデリング機構(<特集>エピジェネティクスによる植物の成長・分化制御)

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概要

• 論文の詳細を見る

• Extensive studies using the model plant organism Arabidopsis suggested that many developmental processes in plants occur via gene regulation achieved through epigenetic mechanisms such as histone modification and chromatin remodeling. The transition to flowering, prerequisite for reproductive success, has been intensively studied and provided a window to understand epigenetic mechanisms in plants. The potent flowering repressor, FLOWERING LOCUS C (FLC), is epigenetically silenced by vernalization, a long-term cold exposure, conferring upon plants the competence to flower. Conversely, a strong activator of flowering, FT, is epigenetically suppressed during the vegetative growth phase, but is expressed in tissue-specific pattern upon exposure to inductive photoperiod. Here we describe epigenetic changes associated with repressing/activating FLC and FT expression. More generally, we consider recent genome-wide studies of histone modification, DNA methylation and the role of TERMINAL FLOWER 2 (TFL2) / LIKE-HETEROCHROMATIN PROTEIN 1 (LHP1) ; such studies serve to enhance global understanding of epigenetic mechanisms in plants, and illustrate some differences among epigenetic mechanisms used by plants and animals.

• 2008-05-31

著者

• 後藤 弘爾

  岡山県生物科学総合研究所

• 玉田 洋介

  University of Wisconsin-Madison

関連論文

• 花を形づくる遺伝子 (植物の形づくり--遺伝子からみた分子メカニズム) -- (器官形成と分裂組織の役割)
• 花から葉,葉から花への転換--MADS転写因子複合体による器官の決定
• CENTRORADIALIS/TERMINAL FLOWER 1 Gene Homolog Is Conserved in N. tabacum, a Determinate Inflorescence Plant
• 植物の生殖成長相への転換を制御するクロマチンリモデリング機構(エピジェネティクスによる植物の成長・分化制御)
• 植物の花成におけるエビジェネティックな制御 (特集 遺伝学)

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