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相关概念视频

Morphogenesis02:19

Morphogenesis

Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.

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相关实验视频

Updated: May 12, 2026

Long-term, High-resolution Confocal Time Lapse Imaging of Arabidopsis Cotyledon Epidermis during Germination
12:01

Long-term, High-resolution Confocal Time Lapse Imaging of Arabidopsis Cotyledon Epidermis during Germination

Published on: December 31, 2012

在植物胚胎发生过程中,一个转录的沙钟.

Marcel Quint1, Hajk-Georg Drost, Alexander Gabel

  • 1Leibniz Institute of Plant Biochemistry, Department of Molecular Signal Processing, Weinberg 3, 06120 Halle (Saale), Germany. mquint@ipb-halle.de

Nature
|September 7, 2012
PubMed
概括

这项研究揭示了Arabidopsis thaliana中的分子胚胎沙钟,反映了动物中的模式. 这一发现表明,尽管有不同的形态发育,但在整个王国中,胚胎发生的逻辑是保留的.

科学领域:

  • 发展生物学 发展生物学
  • 进化生物学 进化生物学
  • 基因组学就是基因组学.

背景情况:

  • 胚胎发生,动物和植物发育的初始阶段,在两种血统中都独立进化.
  • 胚胎砂时钟模型的特点是早期分歧,胚胎形成中期的融合 (类型阶段) 和晚期的分歧,在动物中得到了很好的支持.
  • 虽然有分子证据证明动物的沙钟存在,但在植物中没有报告过.

研究的目的:

  • 为了研究在植物中存在分子胚胎沙钟的存在.
  • 为了比较植物的分子和形态发育模式.
  • 探索整个王国的胚胎生成逻辑的进化保存.

主要方法:

  • 对Arabidopsis thaliana胚胎的植物转录组分析.
  • 使用了两个互补的分析方法.
  • 在胚胎发生过程中比较基因表达特征.

主要成果:

  • 提供了Arabidopsis thaliana中的分子胚胎沙表的植物转录学证据.
  • 在植物的类型阶段证明了基因表达的高度保护.
  • 观察了植物发育中的形态和分子模式的潜在解.

更多相关视频

Efficient and Rapid Isolation of Early-stage Embryos from Arabidopsis thaliana Seeds
08:05

Efficient and Rapid Isolation of Early-stage Embryos from Arabidopsis thaliana Seeds

Published on: June 7, 2013

A Method for Characterizing Embryogenesis in Arabidopsis
10:24

A Method for Characterizing Embryogenesis in Arabidopsis

Published on: August 4, 2017

相关实验视频

Last Updated: May 12, 2026

Long-term, High-resolution Confocal Time Lapse Imaging of Arabidopsis Cotyledon Epidermis during Germination
12:01

Long-term, High-resolution Confocal Time Lapse Imaging of Arabidopsis Cotyledon Epidermis during Germination

Published on: December 31, 2012

Efficient and Rapid Isolation of Early-stage Embryos from Arabidopsis thaliana Seeds
08:05

Efficient and Rapid Isolation of Early-stage Embryos from Arabidopsis thaliana Seeds

Published on: June 7, 2013

A Method for Characterizing Embryogenesis in Arabidopsis
10:24

A Method for Characterizing Embryogenesis in Arabidopsis

Published on: August 4, 2017

结论:

  • 分子胚胎沙表存在于植物中,表明融合进化.
  • 胚胎发生在整个王国 (动物和植物) 中表现出一种保存的分子逻辑.
  • 在植物中,形态和分子发育模式可能不结合.