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関連する概念動画

Fertilization01:38

Fertilization

94.1K
During fertilization, an egg and sperm cell fuse to create a new diploid structure. In humans, the process occurs once the egg has been released from the ovary, and travels into the fallopian tubes. The process requires several key steps: 1) sperm present in the genital tract must locate the egg; 2) once there, sperm need to release enzymes to help them burrow through the protective zona pellucida of the egg; and 3) the membranes of a single sperm cell and egg must fuse, with the sperm...
94.1K
Cleavage and Blastulation01:33

Cleavage and Blastulation

51.5K
After a large-single-celled zygote is produced via fertilization, the process of cleavage occurs while zygotes travel through the uterine tube. Cleavage is a mitotic cell division that does not result in growth. With each round of successive cell division, daughter cells get increasingly smaller.
51.5K
Meiosis II01:57

Meiosis II

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Meiosis II is the second and final stage of meiosis. It relies on the haploid cells produced during meiosis I, each of which contain only 23 chromosomes—one from each homologous initial pair. Importantly, each chromosome in these cells is composed of two joined copies, and when these cells enter meiosis II, the goal is to separate such sister chromatids using the same microtubule-based network employed in other division processes. The result of meiosis II is two haploid cells, each...
211.0K
Meiosis II02:02

Meiosis II

51.9K
Meiosis II entails cell division and segregation of the sister chromatids, resulting in the production of four unique haploid gametes. The steps for meiosis II are similar to mitosis, except that meiosis II occurs in haploid cells, whereas mitosis occurs in diploid cells.
The timing and cell division patterns of meiosis differ between males and females. In male meiosis, the centrosomes are part of the formation of the meiotic spindle. However, in oocytes, including that of humans, Drosophila,...
51.9K
The Angiosperm Life Cycle02:39

The Angiosperm Life Cycle

77.1K
Plants have a life cycle split between two multicellular stages: a haploid stage—with cells containing one set of chromosomes—and a diploid stage—with cells containing two sets of chromosomes. The haploid stage is the gamete-producing gametophyte, and the diploid stage is the spore-producing sporophyte.
77.1K
Zygotic Development And Stem Cell Formation01:10

Zygotic Development And Stem Cell Formation

7.6K
The development of all multicellular organisms starts with the fusion of haploid cells called sperm and egg to form a diploid zygote. A zygote is a totipotent cell that can develop into a complete organism. The zygote undergoes cell division or cleavage to form an 8-cell mass. Until this stage, the cells are spherical, loosely attached, and remain totipotent. Totipotent cells are capable of developing both the embryonic and the extraembryonic tissues. However, as they continue to divide, they...
7.6K

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Updated: Apr 12, 2026

Evaluation of Fertilization State by Tracing Sperm Nuclear Morphology in Arabidopsis Double Fertilization
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Evaluation of Fertilization State by Tracing Sperm Nuclear Morphology in Arabidopsis Double Fertilization

Published on: August 29, 2019

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二重受精時の3つの細胞融合

Stefanie Sprunck1, Thomas Dresselhaus1

  • 1Cell Biology and Plant Biochemistry, Biochemie-Zentrum Regensburg, University of Regensburg, 93053 Regensburg, Germany.

Cell
|May 11, 2015
PubMed
まとめ
この要約は機械生成です。

フラワープラントは受精後,ユニークな第三細胞融合を示します. アラビドプシスのこの現象は,花粉管の吸引物質を急速に薄め,複数の花粉管の入り口 (ポリチューブ) を防ぐ.

さらに関連する動画

Cell-cell Fusion of Genome Edited Cell Lines for Perturbation of Cellular Structure and Function
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Cell-cell Fusion of Genome Edited Cell Lines for Perturbation of Cellular Structure and Function

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Generation of Parabiotic Zebrafish Embryos by Surgical Fusion of Developing Blastulae
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Generation of Parabiotic Zebrafish Embryos by Surgical Fusion of Developing Blastulae

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関連する実験動画

Last Updated: Apr 12, 2026

Evaluation of Fertilization State by Tracing Sperm Nuclear Morphology in Arabidopsis Double Fertilization
05:21

Evaluation of Fertilization State by Tracing Sperm Nuclear Morphology in Arabidopsis Double Fertilization

Published on: August 29, 2019

9.1K
Cell-cell Fusion of Genome Edited Cell Lines for Perturbation of Cellular Structure and Function
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Cell-cell Fusion of Genome Edited Cell Lines for Perturbation of Cellular Structure and Function

Published on: December 7, 2019

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Generation of Parabiotic Zebrafish Embryos by Surgical Fusion of Developing Blastulae
10:38

Generation of Parabiotic Zebrafish Embryos by Surgical Fusion of Developing Blastulae

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科学分野:

  • 植物の生殖生物学 植物の生殖生物学
  • 分子および細胞生物学は,分子および細胞生物学である.
  • 発達生物学 発達生物学とは

背景:

  • 花咲く植物は,卵と中央細胞との融合を含む二重受精によって区別されます.
  • 複数の花粉管の入り口 (polytubey) を防止することは,植物における繁殖の成功に不可欠です.

研究 の 目的:

  • アラビドプシスの正規の二重受精を超えた潜在的な細胞融合の出来事を調査する.
  • 受精後のポリチュービーを防ぐメカニズムを解明する.

主な方法:

  • アラビドプシス・タライアナのコンフォカル顕微鏡.
  • 光タンパク質の局所化と細胞形態学の分析.
  • 花粉管の誘導信号を調査する.

主要な成果:

  • 持続的なシネージドと受精した中央細胞との間に新しい第三細胞融合イベントが特定されました.
  • この融合は,二重受精の直後に起こります.
  • 融合は,花粉管の吸引物質を急速に薄め,ポリチューブを効果的に防止します.

結論:

  • アラビドプシスは,生殖の忠誠性を確保するために,第3の細胞融合を含む以前に説明されていないメカニズムを有しています.
  • このシネージド・セントラル・セル・フュージョンは,ポリチュービーを防止し,受精プロセスを保護する上で重要な役割を果たします.