Related Experiment Video
Updated: Jul 5, 2026
08:21
Site-specific Bacterial Chromosome Engineering: ΦC31 Integrase Mediated Cassette Exchange (IMCE)
Published on: March 16, 2012
Plant engineered minichromosomes and artificial chromosome platforms
1Division of Biological Sciences, University of Missouri, Columbia, MO 65211, USA. BirchlerJ@Missouri.edu
Cytogenetic and Genome Research
|May 28, 2008
Summary
Introducing telomere sequences into maize creates engineered minichromosomes. These minichromosomes can be further modified with genes and dosage-controlled, offering versatile applications in plant genetics.
Area of Science:
- Plant genetics
- Chromosomal engineering
- Molecular biology
Background:
- Telomere sequences are crucial for chromosome stability.
- Minichromosomes are small, artificial chromosomes.
- Maize B chromosomes are supernumerary and can be manipulated.
Purpose of the Study:
- To explore the creation of engineered minichromosomes in maize.
- To investigate the potential for gene addition and dosage control of these minichromosomes.
- To discuss the applications of these novel genetic tools.
Main Methods:
- Introduction of telomere sequences into maize to induce chromosomal truncation.
- Simultaneous introduction of site-specific recombination cassettes.
- Targeting of the maize supernumerary B chromosome for high-efficiency truncation.
Main Results:
- Successful creation of truncated maize chromosomes, forming minichromosomes.
- Demonstrated ability to add genes to engineered minichromosomes via recombination cassettes.
- Engineered minichromosomes derived from B chromosomes exhibit dosage manipulability.
Conclusions:
- Engineered minichromosomes in maize can be generated through telomere-induced truncation.
- These minichromosomes offer a platform for gene addition and precise dosage control.
- The technology holds significant potential for applications in maize genetic research and breeding.
Related Concept Videos
02:53Conservative Site-specific Recombination and Phase Variation
Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
The recognition sites for Cre recombinase called LoxP...
01:24iChip
The cultivation of environmental microorganisms has long been hindered by the inability to replicate complex native conditions in vitro. The isolation chip (iChip) addresses this limitation by facilitating the growth of previously uncultivable microorganisms through in situ incubation. Designed for high-throughput microbial cultivation, the iChip comprises hundreds of microchambers, each capable of housing a single microbial cell. These microchambers are loaded with a mixture of molten agar and...