来自田间玉米的RppQ基因的侵入改善了甜玉米中的南方抗性
Nan Zhang1, Xitao Qi1, Xiaofeng Li1
1Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangdong Key Laboratory of Crops Genetics and Improvement, Guangzhou, 510640 China.
Molecular breeding : new strategies in plant improvement
|June 13, 2023
概括
研究人员通过将RppQ基因从田间玉米转移而开发了抗的南方甜玉米. 这提高了抗病能力,而不影响产量或质量,为甜玉米生产提供了可持续的解决方案.
科学领域:
- 植物育种与遗传学
- 农作物科学 农作物科学
- 植物病理学 植物病理学
背景情况:
- 南方,由*Puccinia polysora*引起,对中国的甜玉米 (*Zea mays*) 产量构成重大威胁,导致大量的产量和质量损失.
- 开发具有增强抗性的甜玉米至关重要,但中国的生殖质缺乏足够的抗性基因.
- 利用耐药基因是一种有效的,环保的策略,用于作物疾病管理.
研究的目的:
- 将南方抗基因*RppQ*从田间玉米入精英的中国甜玉米杂交线.
- 开发新的甜玉米系列,提高对南方生的抵抗力,同时保持可取的农学特征.
- 为了提供一个实用的例子,使用耐药性基因可持续的甜玉米改进.
主要方法:
- 用标记器辅助的逆交繁殖来转移 *RppQ* 基因.
- 开发了五个基于*RppQ*的标记器,以便在反向交叉过程中高效地选择前景.
- 评估了重复的父基因组恢复,在三到四个逆交代后开发出近同位素系.
主要成果:
- 四个精英甜玉米杂交系成功结合了*RppQ*基因,显著增强了对南方生的抵抗力.
- *RppQ*的内向性并没有对转换的线条中的关键农学特征或糖含量产生负面影响.
- 来自耐药系的杂交品种保持了南方的耐性和其他可取的特征.
结论:
- *RppQ*基因的成功内侵入为培育南方耐玉米提供了宝贵的工具.
- 开发的耐药品种和杂交品种提供了一种可持续的解决方案,以减轻南方生造成的产量损失.
- 这项研究证明了将抗性特征从田间玉米转移到甜玉米的可行性,以改善作物.
更多相关视频
07:42Microinjection of Western Corn Rootworm, Diabrotica virgifera virgifera, Embryos for Germline Transformation, or CRISPR/Cas9 Genome Editing
Published on: April 27, 2018
7.5K
07:09A Rapid and Efficient Method for Assessing Pathogenicity of Ustilago maydis on Maize and Teosinte Lines
Published on: January 3, 2014
8.6K
相关概念视频
01:59Plant Breeding and Biotechnology
19.5K
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.
19.5K
01:20Monohybrid Crosses
230.4K
Overview
230.4K
02:27Trihybrid Crosses
23.5K
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...
23.5K
01:18Dihybrid Crosses
75.2K
Overview
75.2K
02:50Transgenic Plants
7.3K
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...
7.3K