相关实验视频

Updated: May 8, 2025

Shifting Zebrafish Lethal Skeletal Mutant Penetrance by Progeny Testing

Shifting Zebrafish Lethal Skeletal Mutant Penetrance by Progeny Testing

Published on: September 1, 2017

为了在育种中进行标记器辅助的选择,为鱼 (Fusarium) 繁殖热带种族-4类型耐药香

Claudia Fortes Ferreira¹, Andrew Chen², Elizabeth A B Aitken²

¹Embrapa Mandioca e Fruticultura, Rua Embrapa s/n CP 007, Bairro Chapadinha, Cruz das Almas 44380-000, Bahia, Brazil.

Journal of fungi (Basel, Switzerland)

|December 27, 2024

概括

虫病威胁全球的香作物. 研究人员确定了一种与野生香耐药性相关的遗传标记,使得巴西香收藏品能够选耐病品种.

科学领域:

植物病理学植物病理学
遗传学是一个遗传学.
农业科学农业科学

背景情况:

虫,是由虫 (Fusarium oxysporum f. sp.) 引起的古巴香 (Foc),摧毁了全球的香产量.
卡文迪什香易受FOC亚热带种族4 (STR4) 和热带种族4 (TR4) 的感染.
野生鱼刺虫种 (Wild Musa acuminata ssp.) 已经成为一种常见的植物. malaccensis (AA) 具有对Foc TR4.4的耐药性.

研究的目的:

在一个大型的Musa spp. 中识别Foc TR4抵抗源. 在巴西收集胚胎血.
使用与Foc电阻相关的先前识别的SNP标记.
促进开发Foc TR4耐药香的繁殖前策略.

主要方法:

使用了与Foc电阻相关的先前识别的SNP标志物.
从巴西的育种计划中选了123个香加入.
测序证实了SNP在抵抗加入中的身份.

主要成果:

在几种香加入中检测到耐药性标记基因,包括商业品种.
这是南美洲首次对一个全面的香收藏进行标记辅助选.
已识别的连接将经过对Foc TR4耐药性的现场验证.

结论:

标记器辅助查有效地识别了香生殖质中的Foc TR4耐药性.
已识别的耐药加入对未来的育种计划有价值.
这项研究有助于制定打击香中虫的策略.

关键词:

富沙 (Fusarium oxysporum sp.) 是一种有毒的植物. 在CubenseCubense中使用.青 (Musa acuminata) 种属 (ssp. ssp.) 在这些植物中是最常见的. 马拉科森斯 (malaccensis) 是一个繁殖繁殖繁殖繁殖分裂放大多态序列标记符的标记符.

更多相关视频

Egg Microinjection and Efficient Mating for Genome Editing in the Firebrat Thermobia domestica

Egg Microinjection and Efficient Mating for Genome Editing in the Firebrat Thermobia domestica

Published on: October 20, 2020

Induction and Evaluation of Inbreeding Crosses Using the Ant, Vollenhovia Emeryi

Induction and Evaluation of Inbreeding Crosses Using the Ant, Vollenhovia Emeryi

Published on: October 5, 2018

相关概念视频

In-vitro Mutagenesis

In-vitro Mutagenesis

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.

Types of Selection

Types of Selection

Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...

Frequency-dependent Selection

Frequency-dependent Selection

When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.

Mate Choice

Mate Choice

Mate choice—the decision about whom to mate with—is a type of natural selection, since animals must reproduce to pass down their genes. Mate choice is also called intersexual selection because the behavior occurs between the sexes.

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.