Study objective:
Show the tomato (Solanum lycopersicum) DELLA protein PROCERA (PRO), a negative regulator of GA signaling, acts in guard cells to promote Tomato stomatal closure and reduce water loss in response to water deficiency by increasing abscisic acid (ABA) sensitivity.
Study Results:
The Tomato pro Mutant exhibits increased transpiration (measured by Plantarray). The results indicate that DELLA promotes stomatal closure independently of its effect on growth.
Published article:
The Tomato DELLA Protein PROCERA Acts in Guard Cells to Promote Stomatal Closure
Nir et. Al., (2017) Plant Cell DOI:10.1105/tpc.17.00542