淘汰miR396基因会增加大豆的种子大小和产量
Hongtao Xie1,2,3, Fei Su4, Qingfeng Niu1,2
1School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
Journal of integrative plant biology
|April 10, 2024
概括
研究人员使用CRISPR基因编辑来创建缺乏功能性miR396基因的大豆突变种. 这些突变产生了更大的种子和更高的产量,为开发更高产量的大豆品种提供了宝贵的遗传资源.
科学领域:
- 植物科学 植物科学
- 遗传学 遗传学 是一个
- 农业科学 农业科学
背景情况:
- 提高大豆产量对于全球粮食和料需求至关重要.
- 在大豆种子大小和产量中,miR396基因的作用以前是未知的.
- 众所周知,miR396基因对大米的谷粒大小有负面调节作用.
研究的目的:
- 研究miR396基因在大豆种子发育和产量中的作用.
- 为了生成和表征带有改变miR396基因活性的大豆突变种.
- 评估miR396基因功能丧失对提高大豆生产力的潜力.
主要方法:
- 使用CRISPR/Cas12SF01技术进行基因组编辑,在六个大豆miR396基因中产生突变.
- 产生了八种不同的大豆突变,具有不同组合的同卵性miR396突变.
- 突变物体的表型特征,包括种子大小,植物高度,产量,以及在田间条件下的抗植性.
主要成果:
- 所有产生的miR396突变品与野生类型品种相比,具有显著更大的种子大小.
- 特定突变 (mir396adf,mir396cdf) 在高度地区的产量增加.
- 其他突变 (mir396abcdf,mir396bcdfi) 在低度地区表现出产量增加,并改善了寄宿抵抗力.
结论:
- 大豆miR396基因中的功能丧失突变导致种子大小增加和产量增加.
- 准miR396基因为培育高产大豆品种提供了一个有希望的策略.
- 标志性的miR396突变体作为未来大豆育种计划的有价值的胚胎质.
相关概念视频
In-vitro Mutagenesis
13.9K
To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
13.9K
Seed Structure and Early Development of the Sporophyte
28.2K
Seed structures are composed of a protective seed coat surrounding a plant embryo, and a food store for the developing embryo. The embryo contains the precursor tissues for leaves, stem, and roots. The endosperm and cotyledons—seed leaves—act as the food reserves for the growing embryo.
28.2K
Dihybrid Crosses
74.8K
Overview
74.8K
Experimental RNAi
6.1K
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
6.1K
Trihybrid Crosses
23.3K
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...
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...
23.3K
Transgenic Plants
7.2K
Recombinant DNA technology called transgenesis is often used to add a foreign gene or remove a detrimental gene from an organism. Such genetically modified organisms are called transgenic organisms.
The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...
The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...
7.2K


