定量特征基因的遗传相互作用网络 标题大米中的日期
Mengjiao Chen1, Yifeng Hong2, Jiongjiong Fan3
1Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Engineering Research Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China; State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China.
Journal of genetics and genomics = Yi chuan xue bao
|January 8, 2025
概括
研究人员使用18K大米线绘制了大米标题日期 (开花时间) 的遗传相互作用图. 他们建立了一个由264个交互的定量特征位点 (QTL) 组成的网络,揭示了对作物发展和产量的洞察力.
科学领域:
- 遗传学 遗传学 是一个
- 植物生物学 植物生物学
- 农业科学 农业科学
背景情况:
- 定量特征基因 (QTGs) 影响大米标题日期,对作物发育和产量至关重要.
- 已知复杂的基因相互作用,但缺乏标题日期QTG的全面网络.
研究的目的:
- 为了确定QTG及其影响米的表观相互作用.
- 构建一个全面的米基因相互作用网络.
主要方法:
- 利用18K大米线来识别QTG和表观相互作用.
- 构建了一个由264个相互作用的定量特征位点 (QTL) 组成的遗传网络.
- 通过近同源线,酵母二杂交和分裂-露西法酶补充试验验验证了QTL相互作用.
主要成果:
- 确定了264对相互作用的QTL影响大米的标题日期.
- QTL对的表观效应平均占加法效应的12.5%.
- 发现表皮症与标题日期基因的等位基因有所不同.
- 发现57个相互作用的QTG对显著影响其他12个农学特征.
结论:
- 开发了大米标题日期基因的遗传网络,这对于调节标题日期和其他农学特征至关重要.
- 该网络为了解大米定量特征的遗传机制提供了基础.
- 这项研究推进了用于改善大米的分子育种策略.
更多相关视频
相关概念视频
Trihybrid Crosses
23.1K
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...
23.1K
Dihybrid Crosses
73.8K
Overview
73.8K
Background and Environment Affect Phenotype
6.4K
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...
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...
6.4K
Plant Breeding and Biotechnology
18.8K
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.
18.8K
Light Acquisition
8.4K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
8.4K
Pleiotropy
39.7K
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
39.7K


