相关实验视频

Updated: Jan 12, 2026

Agrobacterium-Mediated Genetic Transformation, Transgenic Production, and Its Application for the Study of Male Reproductive Development in Rice

Agrobacterium-Mediated Genetic Transformation, Transgenic Production, and Its Application for the Study of Male Reproductive Development in Rice

Published on: October 6, 2020

在混合大米中工程合成阿波米克斯

Donaldo Meynard^1,2, Aurore Vernet^1,2, Imtiyaz Khanday^3,4

¹CIRAD, UMR AGAP Institut, Montpellier, France.

Methods in molecular biology (Clifton, N.J.)

|October 30, 2025

概括

科学家们在大米中设计了合成阿波米克斯,使F1杂交种子的克隆种子成为可能. 这一突破绕过了传统的育种,通过创造自我繁殖的杂交种子,彻底改变了农业.

科学领域:

植物遗传学和育种.
农业生物技术农业生物技术
生殖生物学生殖生物学

背景情况:

通过种子进行的克隆繁殖 (apomixis) 提供了在作物中稳定的F1杂交的潜力.
以前试图将阿波米克斯从野生物种转移到农作物上的尝试都没有成功.
工程阿波米克斯模仿了自然的体育原生双胞体阿波米克斯.

研究的目的:

开发一种高效的方法,以在作物中实现合成阿波米克斯.
为了实现克隆F1杂交种子的生产,彻底改变了作物繁殖.
描述生成和验证合成阿波米克特事件的方法.

主要方法:

设计了一种"全合一"的T-DNA结构,用于大米的转化.
利用CRISPR-Cas9来创建一个Mitosis,而不是Meiosis (MiMe) 三重突变,消除了变质.
在一个卵细胞特异性促进子下引入了一个BABY BOOM1 (BBM1) 转录因子.

主要成果:

使用T-DNA结构在米中实现了高频率 (95-100%) 的合成阿波米克斯.
在三个额外的F1杂交大米品种中成功生成了合成的apomictic事件.
开发了分析MiMe突变的方法,并通过BBM1表达证实了apomictic后代.

结论:

"全合一"的T-DNA方法在诱导大米中的合成阿波米克斯方面非常有效.
这种工程化阿波米克斯可以生产真正的繁殖F1杂交种子.
这项技术在革命农业和作物育种方面具有重大前景.

关键词:

婴儿潮 (Baby Boom) 是一个流行趋势.这就是CRISPR/Cas9的作用.杂交大米是一种混合大米.这就是为什么MiMeMe MiMe.合成的阿波米克西斯

更多相关视频

Author Spotlight: Streamlining Rice Breeding with CRISPR/Cas for Obtaining Optimal Phenotypic and Agronomic Traits

Author Spotlight: Streamlining Rice Breeding with CRISPR/Cas for Obtaining Optimal Phenotypic and Agronomic Traits

Published on: January 3, 2025

Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes

Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes

Published on: February 14, 2020

相关概念视频

Plant Breeding and Biotechnology

Plant Breeding and Biotechnology

Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.

Synthetic Biology

Synthetic Biology

Synthetic biology is an interdisciplinary science that involves using principles from disciplines such as engineering, molecular biology, cell biology, and systems biology. It involves remodeling existing organisms from nature or constructing completely new synthetic organisms for applications such as protein or enzyme production, bioremediation, value-added macromolecule production, and the addition of desirable traits to crops, to name a few.
Golden rice
Golden rice is a genetically modified...

Dihybrid Crosses

Dihybrid Crosses

Trihybrid Crosses

Trihybrid Crosses

Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...