SEE PROFILE

Ethylene is an important hormone for the nor-mal growth and development of plants, develop-ments such as root elongation, senescence, fruit ripening, etc. However, when this hormone is present at high concentration, for example in stressed conditions, it can be damaging for plants (1). Plant growth promoting rhizobacteria (PGPR) are a group of soil bacteria that can stim-ulate the growth of plants through various mecha-nisms such as nitrogen fixation, synthesizing phy-tohormones or solubilizing phosphates (2). Many PGPRs contain the enzyme 1-aminocyclo-propane-1-carboxylate (ACC) deaminase. This enzyme can cleave ACC, the precursor of ethyl-ene, to α-ketobutyrate and ammonium (3) an