Stress Granules (SGs) are stress-induced biomolecular condensates that are composed of proteins, mRNA and metabolites. SGs are very dynamic, they formed in response to stress and disassemble shortly after the stress is gone. Their dynamics strictly depends on LLPS properties of key SGs proteins. During my talk, I will focus on few proteins that belong to the core of SGs and shortly describe up to date proteome of SGs. I will present results where modification of SGs proteins led to change in the dynamics of SGs. As the outcome, modified SG dynamics led to improved heat stress tolerance in Arabidopsis thaliana. Therefore SGs are potential target to focus for the improvement of plant survival under unfavorable abiotic stress conditions.