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首页> 外文期刊>Cell Research >LEAFY HEAD2, which encodes a putative RNA-binding protein, regulates shoot development of rice.
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LEAFY HEAD2, which encodes a putative RNA-binding protein, regulates shoot development of rice.

机译：编码推定的RNA结合蛋白的LEAFY HEAD2调节水稻的芽发育。

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摘要

During vegetative development, higher plants continuously form new leaves in regular spatial and temporal patterns. Mutants with abnormal leaf developmental patterns not only provide a great insight into understanding the regulatory mechanism of plant architecture, but also enrich the ways to its modification by which crop yield could be improved. Here, we reported the characterization of the rice leafy-head2 (lhd2) mutant that exhibits shortened plastochron, dwarfism, reduced tiller number, and failure of phase transition from vegetative to reproductive growth. Anatomical and histological study revealed that the rapid emergence of leaves in lhd2 was resulted from the rapid initiation of leaf primordia whereas the reduced tiller number was a consequence of the suppression of the tiller bud outgrowth. The molecular and genetic analysis showed that LHD2 encodes a putative RNA binding protein with 67% similarity to maize TE1. Comparison of genome-scale expression profiles between wild-type and lhd2 plantssuggested that LHD2 may regulate rice shoot development through KNOX and hormone-related genes. The similar phenotypes caused by LHD2 mutation and the conserved expression pattern of LHD2 indicated a conserved mechanism in controlling the temporal leaf initiation in grass.Cell Research (2006) 16: 267-276. doi:10.1038/sj.cr.7310034; published online 16 March 2006.
机译：在营养生长过程中，高等植物不断以规则的空间和时间模式形成新的叶子。具有异常叶片发育模式的突变体不仅为了解植物结构的调控机制提供了深刻的见解，而且丰富了对其进行改良的方法，从而可以提高农作物的产量。在这里，我们报道了水稻leaf-head2（lhd2）突变体的表征，该突变体表现出缩短的质体同步，矮化，减少的分er数以及从营养生长到生殖生长的相变失败。解剖和组织学研究表明，lhd2中叶片的快速出现是由于叶片原基的快速启动而导致的，而分till数减少是抑制分er芽生长的结果。分子和遗传分析表明，LHD2编码一种假定的RNA结合蛋白，与玉米TE1有67％的相似性。野生型和lhd2植物之间的基因组规模表达谱比较表明，LHD2可能通过KNOX和激素相关基因调控水稻芽发育。由LHD2突变引起的相似表型和LHD2的保守表达模式表明了控制草中临时叶生的保守机制.Cell Research（2006）16：267-276。 doi：10.1038 / sj.cr.7310034;在线发布于2006年3月16日。

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  • 来源
    《Cell Research》 |2006年第3期|P.267-276|共10页
  • 作者

    Wang YH;

  • 作者单位

    [1] 1State Key Laboratory of Plant Genomics and National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China [2] 3Graduate University of Chinese Academy of Sciences, Beij;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 细胞生物学;
  • 关键词

    development aspects; Rice; Plant Leaves; AOD use initiation; Rapid; 稻(米); 植物叶;

    机译：development aspects;Rice;Plant Leaves;AOD use initiation;Rapid;稻(米);植物叶;

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