概括
现型正常的花植物是用番茄金色马赛克病毒 (TGMV) DNA进行的. 植物与TGMV A和B组件之间的交叉产生的后代具有类似病毒的症状,表明TGMV复制和疾病的潜力.
科学领域:
- 植物病毒学 植物病毒学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 番茄金色马赛克病毒 (TGMV) 是一种双重的双胞胎病毒,需要两个DNA组件 (A和B) 来感染.
- 了解双子病毒的复制和症状的发展对于作物保护至关重要.
研究的目的:
- 为了研究转基因植物中TGMVDNA组件的复制和潜在的致病性.
- 建立一个模型系统来研究使用Agrobacterium介导转换的TGMV功能.
主要方法:
- 基于Agrobacterium tumefaciensTi等离子体的转化被用于生成具有集成TGMV A或BDNA组件的花植物.
- 南方杂交被用来分析转基因植物及其后代中TGMVDNA的存在和形式.
- 在携带不同TGMV DNA插件的植物之间进行了受控交叉.
主要成果:
- 转基因花植物与串联,直接重复的TGMV A插件产生了自由的单链和双链A组分DNA.
- 配对TGMV B插入的植物没有产生可检测的自由B组件DNA.
- 双联TGMV A和双联TGMV B插入的植物之间的交叉导致四分之一的后代表现出性病变,表明TGMV复制和症状诱导.
结论:
- 该研究表明,使用转基因植物研究TGMV复制和症状发展的可行性.
- 结果表明,TGMV A和B组件的存在是产生传染性病毒和在后代中引起疾病症状的必要条件.
- 这种方法为剖析TGMV病原体背后的分子机制提供了有价值的工具.
更多相关视频
09:05Tomato Root Transformation Followed by Inoculation with Ralstonia Solanacearum for Straightforward Genetic Analysis of Bacterial Wilt Disease
Published on: March 11, 2020
05:56Direct Agroinoculation of Maize Seedlings by Injection with Recombinant Foxtail Mosaic Virus and Sugarcane Mosaic Virus Infectious Clones
Published on: February 27, 2021
相关概念视频
Transgenic Organisms
Overview
DNA-only Transposons
DNA-only transposons are called autonomous transposons since they code for the enzyme transposase that is required for the transposition mechanism. Insertion of transposons can alter gene functions in multiple ways. They can mutate the gene, alter gene expression by introducing a novel promoter or insulator sequence, introduce new splice sites, and change the mRNA transcripts produced, or remodel chromatin structure.
The donor site from where the transposon is excised is either degraded or...
The donor site from where the transposon is excised is either degraded or...
Transgenic Organisms
Overview
Synthetic Biology
Synthetic biology is an interdisciplinary science that involves using principles from disciplines such as engineering, molecular biology, cell biology, and systems biology. It involves remodeling existing organisms from nature or constructing completely new synthetic organisms for applications such as protein or enzyme production, bioremediation, value-added macromolecule production, and the addition of desirable traits to crops, to name a few.
Golden rice
Golden rice is a genetically modified...
Golden rice
Golden rice is a genetically modified...
Transgenic Plants
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...
DNA Bacteriophages
Bacteriophages, or phages, are viruses that specifically infect bacteria, utilizing their genetic material to hijack host cellular machinery for replication. DNA bacteriophages employ single-stranded DNA (ssDNA) or double-stranded DNA (dsDNA) genomes. These phages exhibit diverse replication strategies and host interactions, influencing their ecological roles and applications in biotechnology and medicine.ssDNA BacteriophagesssDNA phages, with their small genomes, utilize unique strategies to...
