The Making of a Compound Inflorescence in Tomato and Related Nightshades
Author Information
Author(s): Lippman Zachary B, Cohen Oded, Alvarez John P, Abu-Abied Mohamad, Pekker Irena, Paran Ilan, Eshed Yuval, Zamir Dani
Primary Institution: The Hebrew University of Jerusalem
Hypothesis
How do the genes S and AN control inflorescence architecture in tomato and related species?
Conclusion
The study reveals that the genes S and AN regulate the branching and flower formation in tomato inflorescences, providing insights into the evolution of inflorescence structures in the Solanaceae family.
Supporting Evidence
- Mutations in the S and AN genes lead to significant changes in inflorescence architecture.
- Alleles of the S gene are responsible for variations in flower number among domesticated tomatoes.
- AN gene mutations stimulate branching in pepper plants, indicating a conserved function across species.
- Sequential expression of S and AN is crucial for the transition from inflorescence to floral meristem.
Takeaway
This study shows that two specific genes in tomatoes help determine how many flowers grow on a branch, which can affect how much fruit the plant produces.
Methodology
The researchers used genetic mapping and phenotyping of over 6000 tomato varieties to identify the roles of the S and AN genes in inflorescence development.
Limitations
The study primarily focuses on domesticated tomato varieties and may not fully represent wild species.
Digital Object Identifier (DOI)
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