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Vernalization in Arabidopsis thaliana is mediated by the PHD finger protein VIN3

机译:PHD指蛋白VIN3介导拟南芥中的春化作用

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摘要

In biennials and winter annuals, flowering is typically blocked in the first growing season. Exposure to the prolonged cold of winter, through a process called vernalization, is required to alleviate this block and permit flowering in the second growing season. In winter-annual types of Arabidopsis thaliana, a flowering repressor, FLOWERING LOCUS C (FLC), is expressed at levels that inhibit flowering in the first growing season. Vernalization promotes flowering by causing a repression of FLC that is mitotically stable after return to warm growing conditions. Here we identify a gene with a function in the measurement of the duration of cold exposure and in the establishment of the vernalized state. We show that this silencing involves changes in the modification of histones in FLC chromatin.
机译:在双年度和冬季年度中,开花通常在第一个生长季节被阻止。需要通过称为春化的过程来暴露于长期寒冷的冬季,以减轻这种情况并在第二个生长季节开花。在拟南芥的冬季一年生类型中,开花阻遏物FLOWERING LOCUS C(FLC)以抑制第一个生长季节开花的水平表达。春化通过引起FLC的抑制来促进开花,该抑制在返回温暖的生长条件后稳定在有丝分裂中。在这里,我们确定了一个在冷暴露持续时间的测量和春化状态建立中具有功能的基因。我们表明,这种沉默涉及FLC染色质中组蛋白修饰的变化。

著录项

  • 来源
    《Nature》 |2004年第6970期|p.159-164|共6页
  • 作者

    Sibum Sung; Richard M. Amasino;

  • 作者单位

    Department of Biochemistry, University of Wisconsin-Madison, 433 Babcock Drive, Madison, Wisconsin 53706, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然科学总论;
  • 关键词

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