3.5.99.7 1-aminocyclopropane-1-carboxylate + H2O - 3.5.99.7 1-aminocyclopropane-1-carboxylate + H2O enzyme enhances nodulation of Pisum sativum, likely by modulating ethylene levels in the plant roots during the early stages of nodule development 3.5.99.7 1-aminocyclopropane-1-carboxylate + H2O the enzyme is thought to be intimately involved in the mechanism that the bacterium uses to promote root elongation in developing Canola seedlings. The enzyme is inducible by 1-aminocyclopropane-1-carboxylate and contains a basal level of constitutively expressed enzyme activity 3.5.99.7 1-aminocyclopropane-1-carboxylate + H2O effective induction by 1-aminocyclopropane-1-carboxylate and 2-aminobutanoate 3.5.99.7 1-aminocyclopropane-1-carboxylate + H2O the enzyme catalyzes the hydrolytic cleavage of 1-aminocyclopropane-1-carboxylate, the immediate precursor of ethylene, and is therefore an inhibitor of ethylene biosynthesis 3.5.99.7 1-aminocyclopropane-1-carboxylate + H2O the plant growth-promoting rhizobacteria stimulate plant growth through the activity of 1-aminocyclopropane-1-carboxylate deaminase 3.5.99.7 1-aminocyclopropane-1-carboxylate + H2O a precursor for ethylene production in plants 3.5.99.7 1-aminocyclopropane-1-carboxylate + H2O ACC deaminase activity is an important trait of plant growth-promoting rhizobacteria, PGPR, that stimulates root growth in infected plants, e.g. in soil-grown tomato Lycopersicon esculentum cv. Ailsa Craig. All the Pseudomonas brassicacearum strains studied cause pith necrosis when stems or fruits are inoculated with a bacterial suspension, as does the causal organism of this disease Pseudomonas corrugata strain 176, but the non-pathogenic strain Pseudomonas sp. Dp2 does not 3.5.99.7 1-aminocyclopropane-1-carboxylate + H2O deamination of the ethylene precursor in plants, regulation of enzyme activity involving the lrp-like leucine-responsive regulatory gene, called acdR, overview 3.5.99.7 1-aminocyclopropane-1-carboxylate + H2O the enzyme converts the precursor of ethylene production to 2-oxobutanoate and abolishes the response to ethylene in etiolated pea seedlings, which occurs after application of 1-aminocyclopropane-1-carboxylate in absence of the ACC deaminase, overview 3.5.99.7 1-aminocyclopropane-1-carboxylate + H2O the substrate is the direct precursor of ethylene, which is a key component in regulation of root elongation in plants, e.g. Brassica campestris, inoculation of ACC deaminase-containing Methylobacterium oryzae sequesters 1-aminocyclopropane-1-carboxylate exuded from roots. The inhibitory actions of exogenous additions of auxins cannot be ameliorated by bacterial inoculation that reduces ethylene concentration in canola seedlings, overview 3.5.99.7 1-aminocyclopropane-1-carboxylate + H2O ACC deaminase-producing bacteria play an important role in the alleviation of different types of stress in plants, including the effect of heavy metals 3.5.99.7 1-aminocyclopropane-1-carboxylate + H2O ACC is the immediate precursor of the plant hormone ethylene, an important mediator of plant growth and development 3.5.99.7 1-aminocyclopropane-1-carboxylate + H2O activity of the mutants, immediate precursor of ethylene in plants 3.5.99.7 1-aminocyclopropane-1-carboxylate + H2O lowering the phytohormone ethylene levels in plants 3.5.99.7 5-nitroanthranilate + H2O - 3.5.99.7 D-cysteine + H2O - 3.5.99.7 additional information the enzyme improves the growth of canola plants after infection with Pseudomonas putida strain UW4 conferring salt tolerance to the plants, overview 3.5.99.7 additional information ACC deaminase stimulates root growth of plants in a coordinated fashion. Bacterial isolates with ACC deaminase activity reduce seed germination and root length in Canola cultivars under stress by treatment with the bacterial suspension. 3.5.99.7 additional information ACC deaminase-producing bacteria are able to inhibit the effect of ethylene on the auxin transduction pathway 3.5.99.7 additional information Canola plants inoculating with the HS-2 strain produce an increase in plant biomass as well as in nickeln uptake by shoots and roots. 3.5.99.7 additional information leucine-responsive regulatory protein is a potential regulator of ACC deaminase transcription 3.5.99.7 additional information mycorrhizal colonization, as well as arbuscule abundance, is significantly stimulated by Pseudomonas putida UW4 AcdS+, but not by the AcdS mutant, on cucumber. 3.5.99.7 additional information Site-directed mutagenesis shows that altering two amino acid residues at the same positions within the predicted active site serves to change the enzyme from D-cysteine desulfhydrase to deaminase from Pseudomonas putida UW4 the enzyme is converted into D-cysteine desulfhydrase. 3.5.99.7 additional information The presence of the ACC deaminase gene in the transgenic plant as well as the inoculation with Pseudomonas putida strain HS-2 improves the percentage emergence of the plants in the presence of the high nickel concentration (2.9 mg Ni/g dry soil) of this soil.