The Lettuce Expression Browser: from lab to LEB

Area of Science:

• Plant science
• Genomics
• Bioinformatics

Background:

• Lettuce (Lactuca sativa L.) is a key crop with growing genomic resources.
• Existing gene expression data lacks tissue-specific resolution and clear visualization.
• This limits functional genomics studies in the Asteraceae family.

Purpose of the Study:

• To develop a high-resolution gene expression resource for lettuce.
• To provide an intuitive platform for exploring gene activity across tissues and conditions.
• To support research in lettuce development, stress responses, and crop improvement.

Main Methods:

• Developed the Lettuce Expression Browser (LEB) platform.
• Integrated transcriptomic data from diverse lettuce tissues, developmental stages, and abiotic stress treatments (salt, far-red).
• Visualized expression data using the ggPlantmap R package.

Main Results:

• Created comprehensive, high-resolution gene expression maps for cultivated and wild lettuce species.
• The LEB platform offers an intuitive interface for exploring gene expression patterns.
• The resource visualizes expression across organs, tissues, and developmental stages.

Conclusions:

• The Lettuce Expression Browser (LEB) is a valuable public resource for lettuce functional genomics.
• It enhances understanding of lettuce development, abiotic stress responses, and evolutionary genomics.
• LEB will facilitate lettuce research and crop improvement efforts.