Constitutive elevation of cAMP in Arabidopsis thaliana enhances plant growth, development, and productivity.

Constitutive elevation of cAMP in Arabidopsis thaliana increases plant height by 14%, seed weight by 17%, and seed yield by 41%, boosting overall productivity.

• Why it matters: Understanding cAMP's systemic role in plants is limited due to its transient signalling nature, hindering insights into its potential for improving growth and stress responses.
• What they did: Researchers engineered Arabidopsis plants to constitutively express adenylate cyclase, raising endogenous cAMP levels by 1.3- to 1.8-fold and analyzing effects on growth, development, and stress susceptibility.
• The result: Elevated cAMP enhanced growth, photosynthesis, and productivity but also increased vulnerability to salinity, pathogens, and ethylene, emphasizing the need for precise regulation of cAMP signalling for optimal plant performance.