関連する実験動画

Updated: Jul 12, 2026

Scalable Transfection of Maize Mesophyll Protoplasts
08:38

Scalable Transfection of Maize Mesophyll Protoplasts

Published on: June 23, 2023

組織培養の子孫の間で転移可能な元素の活性性の発見 - 派生トウモロコシの植物

V M Peschke, R L Phillips, B G Gengenbach

    Science (New York, N.Y.)
    |November 6, 1987
    PubMed
    まとめ

    組織培養されたトウモロコシの遺伝子異常を調査した. 研究者らは再生された植物で活性なAc移植可能な元素を発見し,組織培養によって誘発された遺伝的多様性におけるそれらの役割を示唆した.

    さらに関連する動画

    Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes10:28

    Agrobacterium-Mediated Immature Embryo Transformation of Recalcitrant Maize Inbred Lines Using Morphogenic Genes

    Published on: February 14, 2020

    関連する概念動画

    Overview of Transposition and Recombination02:13

    Overview of Transposition and Recombination

    Transposons make up a significant part of genomes of various organisms. Therefore, it is believed that transposition played a major evolutionary role in speciation by changing genome sizes and modifying gene expression patterns. For example, in bacteria, transposition can lead to conferring antibiotic resistance. Movement of transposable elements within the genetic pool of pathogenic bacteria can aid in transfer of antibiotic-resistant genetic elements. In eukaryotes, transposons can carry out...
    DNA-only Transposons02:57

    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...
    Transposons01:24

    Transposons

    Transposons, or "jumping genes," are small mobile genetic elements (MGEs) that range from 700 to 40,000 base pairs in length. They are found in all organisms and can move within the same chromosome or transfer to different chromosomes. In some cases, transposons can also jump between different host DNA molecules, such as plasmids or viruses, contributing to genetic variability.Barbara McClintock first discovered these mobile genetic elements in the 1940s while studying maize genetics, and she...
    Transgenic Plants02:50

    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...
    Plant Breeding and Biotechnology01:59

    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.