Tomato Stomatal Closure Hormonal Regulation

Study objective:

Show the tomato (Solanum lycopersicum) DELLA protein PROCERA (PRO), a negative regulator of GA signaling, acts in guard cells to promote 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

Della graph

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