Abstracts
Ethylene is a key gaseous hormone that controls various physiological processes in plants including growth, senescence, fruit ripening, and responses to abiotic and biotic stresses. In spite of some of these positive effects, the gas usually inhibits plant growth. While chemical fertilizers help plants grow better by providing soil-limited nutrients such as nitrogen and phosphate, over-usage often results in growth inhibition by soil contamination and subsequent stress responses in plants. Therefore, controlling ethylene production in plants becomes one of the attractive challenges to increase crop yields. Some soil bacteria among plant growth-promoting rhizobacteria (PGPRs) can stimulate plant growth even under stressful conditions by reducing ethylene levels in plants, hence the term “stress controllers” for these bacteria. Thus, manipulation of relevant genes or gene products might not only help clear polluted soil of contaminants but contribute to elevating the crop productivity. In this article, the beneficial soil bacteria and the mechanisms of reduced ethylene production in plants by stress controllers are discussed.
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H. S. Yun and S. C. Chang contributed to this work equally.
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Kang, B.G., Kim, W.T., Yun, H.S. et al. Use of plant growth-promoting rhizobacteria to control stress responses of plant roots. Plant Biotechnol Rep 4, 179–183 (2010). https://doi.org/10.1007/s11816-010-0136-1
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DOI: https://doi.org/10.1007/s11816-010-0136-1