揭开红叶和红肉特征之间的基因调节网络,用于染色葡萄的染色体葡萄
Haoran Li1, Yi Zhang2, Wen Zhang3
1Sanya Research Institute, Nanjing Agricultural University, Sanya, 572000, China; College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China.
Journal of plant physiology
|March 30, 2025
概括
葡萄叶的颜色转变为红色,这是由于由VvMYBA6基因所驱动的安托西亚宁积累造成的. 这种基因与VvMYC1和VvMYBA1相互作用,调节氨酸合成,影响葡萄中的果色.
科学领域:
- 植物分子生物学 植物分子生物学
- 葡萄藤遗传学 葡萄藤遗传学
- 颜料生物合成 颜料生物合成
背景情况:
- 之前对葡萄安东基氨酸的研究主要集中在皮肤颜色上.
- 有限的研究已经研究了葡萄中红肉和叶子颜色的遗传基础.
研究的目的:
- 确定"中山151"葡萄品种中调节红叶颜色的分子机制.
- 为了阐明安托西亚宁积累在叶子颜色变化中的作用.
主要方法:
- 基因鉴定和表征 (VvMYBA6).
- 蛋白质局部化和功能测试 (转录激活).
- 在异质系统 (烟草) 中基因过度表达.
- 蛋白质与蛋白质相互作用研究 (酵母双混合,拉下测试).
主要成果:
- 安东素积累是叶子颜色从绿色转变为红色的主要驱动因素.
- VvMYBA6是一种具有转录激活活性的核蛋白,促进了氨酸的积累.
- VvMYBA6与VvMYC1相互作用,激活VvUFGT的表达,从而增强了氨酸的合成.
- VvMYBA1,VvMYC1和VvMYBA6之间的相互作用调节了叶子和肉中的素积累.
结论:
- 蛋白质复合体VvMYBA6,VvMYBA1和VvMYC1在氨酸合成调节中起着至关重要的作用.
- 这些发现提供了对染色葡萄中红色染色的遗传控制的见解.
- 了解这些相互作用可以帮助开发具有所需果实和叶子颜色的葡萄品种.
更多相关视频
相关概念视频
Monohybrid Crosses
Overview
Dihybrid Crosses
Overview
Epistasis
In addition to multiple alleles at the same locus influencing traits, numerous genes or alleles at different locations may interact and influence phenotypes in a phenomenon called epistasis. For example, rabbit fur can be black or brown depending on whether the animal is homozygous dominant or heterozygous at a TYRP1 locus. However, if the rabbit is also homozygous recessive at a locus on the tyrosinase gene (TYR), it will have an unshaded coat that appears white, regardless of its TYRP1...
Position-effect Variegation
In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
Incomplete Dominance
Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
Gene Regulation During Sporulation
Sporulation is a complex developmental process that allows certain Gram-positive bacteria, such as Bacillus subtilis and Clostridium species, to survive extreme environmental conditions. This process is tightly regulated by a series of signaling cascades and transcriptional controls, ensuring the formation of a highly resistant endospore.Sporulation is triggered by unfavorable conditions, such as nutrient depletion, and is governed by a phosphorelay system. One of the sensor kinases, such as...


