Thekey differencebetween synergid and egg cell is that thesynergid cell is one of the two cells that accompanies the egg cell while the egg cell is the female gamete or the female germ cell of被子植物.
The flower is the reproductive structure of flowering plants. Within the flower, male and female reproductive structures are present. Thegynoecium是女性生殖结构,它由柱头, style and ovary. Inside the ovary, femalegametophyte存在,它也被称为胚囊还是米egagametophyte. Embryo sac contains the female gamete or the egg cell of angiosperms. Around the egg cell, several other cells can be found. Among those, two synergid cells accompany the egg cell.
内容
1.Overview and Key Difference
2.什么是协同细胞
3.What is Egg Cell
4.Similarities Between Synergid and Egg Cell
5.Side by Side Comparison – Synergid vs Egg Cell in Tabular Form
6.概括
什么是协同细胞?
Embryo sac of angiosperms has four types of cells namely antipodal cells, synergid cells, central cell and egg cell. There are two synergid cells inside the embryo sac. They are the cells that accompany and support the egg cell. They locate with the egg cell. The term ‘synergid’ refers to ‘working together’. Hence two synergid cells work together with the egg cell during the fusion of egg cell and sperm cell. Furthermore, synergids provide protection and nutrients to the egg cells.
授粉完成后,花粉管会在污名上发展。胚胎囊中的协同细胞产生吸引剂,并引导花粉管朝着卵细胞。因此,花粉管在碑石内生长朝胚囊的卵细胞。花粉管生长成两个协同细胞之一。然后,花粉管停止其生长并破裂以释放两个精子细胞。协同细胞将精子细胞驱动到卵细胞中以进行合成蛋白。然后协同细胞退化。这反映了协同细胞成功受精的重要性。
What is Egg Cell?
Egg cell is the female gamete. It is also known as the female germ cell. In angiosperms, egg cell locates inside the embryo sac. It accompanies two synergid cells that are working together. Egg cell unites with the male gamete (sperm cell) and completes the fertilization process. After this union, it becomes the seed of flowering plants.
此外,卵细胞是单倍体,它含有其他细胞拥有的一半染色体。当它与雄配子融合时,它将导致二倍体细胞(称为合子)最终产生新植物。
What are the Similarities Between Synergid and Egg Cell?
- In angiosperms, synergid and egg cell locate inside the female gametophyte, which is the embryo sac.
- Synergid cells support egg cell to be fertilized with a sperm cell.
- Both are necessary for a successful fertilization process.
- Synergid and Egg Cell can be found in gynoecium.
协同细胞和鸡蛋细胞有什么区别?
协同细胞和卵细胞是雌性被子植物植物植物中的两种细胞。两个协同细胞伴随卵细胞,并与IT一起工作以成功受精。卵细胞是雌性生殖细胞,它与雄性生殖细胞融合并产生二倍体合子。而协同细胞通过提供保护和营养来帮助卵细胞。这是协同细胞和卵细胞之间的关键区别。
下面的信息图介绍了有关表格形式的协同和蛋细胞之间差异的更多详细信息。
概括– Synergid vs Egg Cell
There are two synergid cells inside the embryo sac while there is one egg cell. Synergid cells are the supportive cells which accompany the egg cell. Egg cell is the female gamete which unites with a sperm cell or a male gamete during the sexual reproduction of angiosperms. Synergids guide the pollen tube that carries sperm cells to grow towards the egg cell for the fertilization. Furthermore, synergids provide protection as well as nutrients to egg cell. This is the difference between synergid and egg cell.
Reference:
1.Higashiyama, T. “The Synergid Cell: Attractor and Acceptor of the Pollen Tube for Double Fertilization.” SpringerLink, Springer, Dordrecht.Available here
2.Eckardt, Nancy A. “Elucidating the Function of Synergid Cells: A Regulatory Role for MYB98.”Plant Cell, American Society of Plant Biologists, 1 Aug. 2007.Available here
Image Courtesy:
1.”Embryosac-en”By Lokal_Profil,(CC BY-SA 2.5)viaCommons Wikimedia
2.”Figure 32 02 07″ByCNX OpenStax(CC BY 4.0)viaCommons Wikimedia
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