相关实验视频

Updated: Jan 7, 2026

Windowing Chicken Eggs for Developmental Studies

Windowing Chicken Eggs for Developmental Studies

Published on: October 1, 2007

三代低海拔适应:雪白的胚胎发育,蛋特性和代谢基因表达起源于西藏高原的雪白

Leilei Peng¹, Liuting Wu¹, Yujia Hu¹

¹State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, PR China; Farm Animal Germplasm Resources and Biotech Breeding Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, PR China.

Poultry science

|December 26, 2025

概括

被转移到低海拔地区的雪白在几代人的卵和器官发育中表现出适应性变化. 他们的基因表达从高海拔低氧反应转向低地适应.

科学领域:

动物生理学动物生理学
进化生物学进化生物学
基因组学就是基因组学.

背景情况:

高海拔低氧对鸟类胚胎发育构成挑战,导致像雪白这样的高原物种的适应.
当这些鸟类被迁移到低地环境时,它们的适应反应尚不清楚.

研究的目的:

研究雪白在从高海拔到低地环境转移后三代的表型和分子适应.
评估卵特征的变化,胚胎器官指数,以及对低氧反应性代谢基因的表达.

主要方法:

在迁移到四川雅安低地后,研究了三代 (G0,G1,G2) 雪白.
评估了蛋的厚度,孔隙密度和水蒸气的透性.
测量胚胎器官指数 (心脏,肝脏,肺,脏) 和基因表达 (HIF-1α,VEGF,糖分,氧化酸化基因).

主要成果:

与G0.0相比,G1和G2世代的卵厚度增加,孔密度降低,水蒸气透率降低.
心脏,肝脏,肺和脏的胚胎器官指数在G1和G2中高于G0.0.
与G1和G2相比,G0表现出HIF-1α,VEGF和糖溶性基因的更高表达,但氧化酸化基因的表达较低.

结论:

雪白在迁移到低地环境时表现出了显著的表型和分子可塑性.
适应包括改变卵的特性和呼吸代谢器官的基因表达模式,促进在新环境中生存.
这项研究提供了对高度适应环境变化的进化动态的见解.

关键词:

的胚胎发育过程代际转变是代际转变.适应低海拔的适应.

更多相关视频

In Ovo Intravascular Injection in Chicken Embryos

In Ovo Intravascular Injection in Chicken Embryos

Published on: June 3, 2022

Primary Endodermal Epithelial Cell Culture from the Yolk Sac Membrane of Japanese Quail Embryos

Primary Endodermal Epithelial Cell Culture from the Yolk Sac Membrane of Japanese Quail Embryos

Published on: March 10, 2016

相关概念视频

Background and Environment Affect Phenotype

Background and Environment Affect Phenotype

Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...