Related Experiment Video
Updated: May 9, 2026
22:27
Hi-C: A Method to Study the Three-dimensional Architecture of Genomes.
Published on: May 6, 2010
A high-resolution cucumber cytogenetic map integrated with the genome assembly
Jianying Sun1, Zhonghua Zhang, Xu Zong
1Institute of Integrative Plant Biology, School of Life Science, Jiangsu Normal University, Xuzhou 221116, China.
BMC Genomics
|July 10, 2013
Summary
A complete cytogenetic map for cucumber (Cucumis sativus L.) was developed using fluorescence in situ hybridization (FISH). This map integrates genetic, cytogenetic, and genome assembly data, aiding cucumber genomics research.
Area of Science:
- Plant genomics
- Cytogenetics
- Molecular biology
Background:
- High-resolution cytogenetic maps are crucial for understanding genome organization and advancing genetic research.
- Previous molecular and cytogenetic studies provided the foundation for cucumber (Cucumis sativus L.) cytogenetic map development.
Purpose of the Study:
- To construct a comprehensive cytogenetic map for cucumber.
- To integrate genetic, cytogenetic, and draft genome assembly maps.
- To assess the accuracy and coverage of the cucumber draft genome assembly.
Main Methods:
- Fluorescence in situ hybridization (FISH) was performed on cucumber pachytene chromosomes.
- Cytogenetic maps of chromosomes 1, 3-5 were constructed.
- Comparative map alignments were generated using relative map position (RMP) for integration with existing maps.
Main Results:
- A complete cytogenetic map for cucumber was established, integrating chromosomes 1-7.
- 76 anchoring points were identified between genetic, cytogenetic, and draft genome assembly maps.
- The study revealed strong correlations between linkage and physical map marker positions and demonstrated near-complete coverage of chromosome arms by the draft genome assembly.
Conclusions:
- The developed cytogenetic map provides essential data for improving sequence assembly in cucumber.
- This research offers valuable molecular tools for cucumber genomics, comparative genomics, and evolutionary studies.
- A good correlation between genetic linkage and physical map positions was observed.
Related Concept Videos
01:17Karyotyping
Overview
03:36Genome Annotation and Assembly
The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.