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Possible mechanisms for the equilibrium of ACC and role of ACC deaminase-producing bacteria
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Possible mechanisms for the equilibrium of ACC and role of ACC deaminase-producing bacteria
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Journal Article
Possible mechanisms for the equilibrium of ACC and role of ACC deaminase-producing bacteria
2022
Overview
Plant growth-promoting rhizobacteria (PGPR) actively colonize the plant rhizosphere, which not only stimulates plants’ growth and development but also mitigates the adverse effects of abiotic stressors. Besides other techniques and approaches used for the alleviation of abiotic stress conditions, the utilization of PGPR with multiplant growth-promoting traits is desirable because the application of PGPR is pragmatic, sustainable, and environmentally friendly. In the past four decades, numerous ACC deaminase-producing PGPR have been reported for the improvement of crop plants’ growth and development under different abiotic stress conditions. Since 1-aminocyclopropane-1-carboxylate (ACC) deaminase producing PGPR regulates ethylene production by utilizing the exuded ACC, which is an immediate precursor of ethylene biosynthesis. However, little is known about the basic mechanism involved in the acquisition of ACC by ACC deaminase-producing bacteria since the enzyme ACC deaminase is localized inside the bacterial cells and ACC is exuded into the rhizosphere from plant roots. In the present article, we proposed candidate attractants involved in the transfer of ACC into ACC deaminase-producing bacteria. Additionally, we discussed the importance and relation of these candidate attractants with ACC deaminase under abiotic stress conditions.
Key points
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The ethylene precursor, ACC, exude from plant tissues under abiotic stresses
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ACC deaminase activity of PGPR localized in the cytoplasm and periplasm of bacteria
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Proposed candidate attractants for the transfer and equilibrium of exuded ACC
Publisher
Springer Berlin Heidelberg,Springer,Springer Nature B.V
