Promotion of Plant Growth by Bacterial ACC Deaminase |
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Authors: | Bernard R. Glick Biljana Todorovic Jennifer Czarny Zhenyu Cheng Jin Duan Brendan McConkey |
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Affiliation: | Department of Biology , University of Waterloo , Waterloo, Ontario, Canada , N2L 3G1 |
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Abstract: | To date, there has been only limited commercial use of plant growth-promoting bacteria in agriculture, horticulture, and silviculture. However, with recent progress toward understanding the mechanisms that these organisms utilize to facilitate plant growth, the use of plant growth-promoting bacteria is expected to continue to increase worldwide. One of the key mechanisms employed by plant growth-promoting bacteria to facilitate plant growth is the lowering of plant ethylene levels by the enzyme 1-aminocyclopropane-1-carboxylate (ACC) deaminase. This article reviews the published work on this enzyme, with an emphasis on its biochemistry, protein structure, genes, and regulation. In addition, this article provides some initial insights into the changes in both plants and ACC deaminase-containing plant growth-promoting bacteria as a consequence of plant-microbe interactions. Finally, a brief discussion of how bacterial ACC deaminase and indoleacetic acid (IAA) together modulate plant growth and development is included. |
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Keywords: | Plant growth-promoting bacteria plant stress ethylene IAA |
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