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相关概念视频

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Behavioral imprinting is observed in some newborn animals and occurs when they develop strong and specific attachments to another animal (usually a parent) following brief, early-life exposures. Offspring imprint onto parents within a brief period after birth or hatching; this time window is called the critical period. Once imprinting occurs, the bond established between the parents and their offspring is usually long-lasting.
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Many animals exhibit parental care behavior, including feeding, grooming, and protecting young offspring. Parental care is universal in mammals and birds, which often have young that are born relatively helpless. Several species of insects and fish, as well as some amphibians, also care for their young.
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Efficient and Rapid Isolation of Early-stage Embryos from Arabidopsis thaliana Seeds
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在Marchantia polymorpha中留下父亲的印记

Sean A Montgomery1, Frédéric Berger2

  • 1Centre for Genomic Regulation (CRG), Barcelona Institute of Science and Technology (BIST), C/ del Dr Aiguader, 88, 08003, Barcelona, Spain.

The New phytologist
|November 8, 2023
PubMed
概括

基因组印记,即基因与父母不平等地表达,在肝草 (Marchantia polymorpha) 中观察到. 父亲基因组被H3K27me3抑制,这是一个在变过程中重置的表观遗传标记.

关键词:
类植物 (Bryophytes) 是一种植物.这是表观遗传学.印记是为了印记.这是一个多重复合材料.性繁殖性繁殖的性繁殖.活类的活类

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科学领域:

  • 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
  • 植物生物学 植物生物学
  • 基因组学就是基因组学.

背景情况:

  • 基因组印记是一种表观遗传现象,父母的基因组表达不均.
  • 最近的研究揭示了肝草Marchantia polymorpha在其双胞胎阶段的父亲基因组抑制.

研究的目的:

  • 为了分析Marchantia polymorpha中的基因组印记.
  • 讨论菌体的印记机制和进化原因.

主要方法:

  • 表观遗传标记分析 (H3K27me3沉积).
  • 生命周期阶段分析 (二倍体阶段,半球变异).

主要成果:

  • 在Marchantia polymorpha中,整个父基因组被抑制.
  • H3K27me3沉积在男性前核上,导致印记.
  • 印记状态在半变化结束时被重置.

结论:

  • 通过H3K27me3进行父基因组抑制是Marchantia polymorpha. 3印记的一个关键特征.
  • 了解 bryophytes 中的印记提供了对其演变和机制的见解.