PIF4 Plays a Conserved Role in Solanum lycopersicum.

Scott Hayes

doi:10.1104/pp.19.01169

Abstract

The adoption of Arabidopsis ( Arabidopsis thaliana ) as a model plant in the early 1980s led to a revolution in plant molecular genetics. Its diminutive size, rapid generation time, and small genome made Arabidopsis a fantastic tool, allowing us to build a complex picture of the genetic architecture

Highlights

In their article, the group demonstrates that tomato seedlings grown at 30°C have longer hypocotyls than those grown at 25°C but that this does not occur in plants with reduced levels of SlPIF4
Rosado et al (2019) noticed that their SlPIF4 knockdown lines produced deepred fruit, which indicates that SlPIF4 likely suppresses tomato pigment production (Fig. 1)
The group show that SlPIF4-RNAi tomatoes ripen faster even when detached from the plant, consistent with local SlPIF4 function in the fruit

Summary

Introduction

The group demonstrates that tomato seedlings grown at 30°C have longer hypocotyls than those grown at 25°C but that this does not occur in plants with reduced levels of SlPIF4. Previous studies have demonstrated roles for SlPIF1a and SlPIF3 in tomato fruit ripening (Llorente et al, 2016; Gramegna et al, 2019). Rosado et al (2019) noticed that their SlPIF4 knockdown lines produced deepred fruit, which indicates that SlPIF4 likely suppresses tomato pigment production (Fig. 1). The group show that SlPIF4-RNAi tomatoes ripen faster even when detached from the plant, consistent with local SlPIF4 function in the fruit.

Results

Conclusion