Related Experiment Video
Updated: May 29, 2026

Live Confocal Imaging of Developing Arabidopsis Flowers
Published on: April 1, 2017
Modular control of orchid beauty: co-expression networks orchestrate organ development and evolution in Phalaenopsis
Francesca Lucibelli1, Angela Carfora2, Marianna Varone2
1Department of Biology, University of Naples Federico II, Via Cintia 26, 80126, Napoli, Italy. francesca.lucibelli@unina.it.
Abstract:
The Orchidaceae family is known for its extraordinary floral diversity and unique ecological adaptations. Beyond their scientific relevance, orchids represent a major component of the ornamental plant industry due to their high commercial value. Therefore, understanding the complex molecular networks that govern orchid flower development is a fascinating and relevant challenge. Despite extensive molecular knowledge, crucial gaps remain regarding the unique developmental programs of orchids. This work aims to present a transcriptomic analysis to investigate differential gene expression across floral tissues during the early stage of flower development in Phalaenopsis aphrodite, in order to uncover new orchid-specific patterns. The identification of co-expression networks, combined with Gene Ontology enrichment analysis, revealed key biological pathways active across distinct floral organs. We found tissue-specific enrichment of functions related to photosynthesis, lipid metabolism, and carbohydrate metabolism. Particular emphasis was placed on genes associated with labellum traits, including pigmentation and morphology, features that are crucial for pollinator attraction and central to orchid floral evolution. The expression patterns of selected genes were validated by qPCR in both wild-type and peloric Phalaenopsis mutants at early developmental stages. Overall, our findings advance the understanding of the molecular regulation underlying orchid flower development and provide new insights into the evolutionary mechanisms shaping floral diversity in orchids.
Related Concept Videos
Morphogenesis
Combinatorial Gene Control
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
Cells Coordinate Growth and Proliferation
Cells Coordinate Growth and Proliferation
Regulation of Expression Occurs at Multiple Steps
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
Regulation of Expression Occurs at Multiple Steps
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...

