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Related Experiment Video

Updated: Jul 12, 2026

Comprehensive Workflow for the Genome-wide Identification and Expression Meta-analysis of the ATL E3 Ubiquitin Ligase Gene Family in Grapevine

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MELOGEN: an EST database for melon functional genomics.

Daniel Gonzalez-Ibeas¹, José Blanca, Cristina Roig

¹Departamento de Biología del Estrés y Patología Vegetal, Centro de Edafología y Biología Aplicada del Segura (CEBAS)- CSIC, Apdo, correos 164, 30100 Espinardo (Murcia), Spain. agr030@cebas.csic.es

|September 5, 2007

Summary

Researchers generated over 30,000 expressed sequence tags (ESTs) for melon (Cucumis melo L.), identifying thousands of unigenes and molecular markers. This genomic resource aids in understanding melon traits and breeding improved varieties.

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Published on: August 15, 2019

Area of Science:

Plant Genomics
Bioinformatics
Molecular Biology

Background:

Melon (Cucumis melo L.) is a vital fruit crop with limited genomic resources.
Existing resources hinder research into essential traits like fruit development, maturation, and disease resistance.
Accelerated breeding of improved melon varieties is needed.

Purpose of the Study:

To create a comprehensive collection of expressed sequence tags (ESTs) for melon.
To facilitate the discovery of genes related to key melon traits.
To establish a foundation for developing new melon varieties.

Main Methods:

Generated over 30,000 ESTs from eight normalized cDNA libraries across various melon tissues and conditions.
Clustered ESTs into 16,637 non-redundant unigenes (contigs and singletons).
Identified molecular markers, including 1,052 simple sequence repeats (SSRs) and 356 single nucleotide polymorphisms (SNPs).

Main Results:

The melon dataset comprises 16,637 unigenes, with 69% showing similarity to known proteins.
Functional classification mapped 9,402 unigenes using the Gene Ontology scheme, showing similar distribution to Arabidopsis.
Identified potential microRNA precursors and genes related to disease resistance and fruit quality, with transcript patterns analyzed by Real-Time-qPCR.

Conclusions:

The characterized EST collection significantly expands available genetic information for melon.
A comprehensive database (MELOGEN) was created, providing access to EST sequences and analysis tools.
This dataset serves as the basis for an oligo-based microarray to further explore the melon transcriptome.