Mitsuaria sp. and Burkholderia sp. from Arabidopsis rhizosphere enhance drought tolerance in Arabidopsis thaliana and maize (Zea mays L.)
| العنوان: | Mitsuaria sp. and Burkholderia sp. from Arabidopsis rhizosphere enhance drought tolerance in Arabidopsis thaliana and maize (Zea mays L.) |
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| المؤلفون: | Dongmei Zhou, Kenneth F. Reardon, Jianhua Guo, Daniel K. Manter, Jorge M. Vivanco, Xing-Feng Huang, Erin R. Lapsansky, Marie J. Andales |
| المصدر: | Plant and Soil. 419:523-539 |
| بيانات النشر: | Springer Science and Business Media LLC, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, Rhizosphere, fungi, Drought tolerance, food and beverages, Soil Science, Plant physiology, Plant Science, Biology, Rhizobacteria, biology.organism_classification, 01 natural sciences, 03 medical and health sciences, 030104 developmental biology, Arabidopsis, Botany, Arabidopsis thaliana, Water-use efficiency, Bacteria, 010606 plant biology & botany |
| الوصف: | Some rhizosphere microbes, such as plant growth-promoting rhizobacteria (PGPR), can alleviate plant drought stress and improve water use efficiency and productivity under drought conditions. The aims of this study are: 1) isolation and characterization of PGPRs from the rhizosphere of Arabidopsis plants that could improve drought tolerance of Arabidopsis and maize; 2) studying the potential mechanisms of improved plant drought tolerance by the isolated bacteria. In this study, bacteria isolates were isolated from the rhizosphere of Arabidopsis plants subjected to water limitation. Subsequently, the isolates were cultured and screened for their ability to improve drought tolerance of Arabidopsis. Potential mechanisms of improved plant drought tolerance by these bacteria including bacterial exopolysaccharide and 1-aminocyclopropane-1-carboxylic acid deaminase production, plant root system architecture modification, and plant physiological responses were also explored. Two bacterial isolates that conferred the greatest drought tolerance to Arabidopsis were further characterized. Both bacteria exhibit 1-aminocyclopropane-1-carboxylic acid deaminase activity, which can promote drought tolerance by decreasing plant ethylene levels. In vitro study showed that both Mitsuaria sp. ADR17 and Burkholderia sp. ADR10 altered the root structure system of Arabidopsis. Moreover, inoculation of Zea mays L. with either strain reduced evapotranspiration (i.e., soil water loss), and changed the plant proline and malondialdehyde levels, antioxidant enzymes activity, and phytohormone contents under drought stress. These results indicate that both strains interact with plants in ways that allow them to alter root system architecture, plant physiological responses and phytohormone levels under drought conditions to alleviate stress and improve plant survival. The results also indicated that each individual isolate has a separate pleiotropic effect. |
| تدمد: | 1573-5036 0032-079X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::f364174ad73529e6d33f81c5c4d8ec14 https://doi.org/10.1007/s11104-017-3360-4 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........f364174ad73529e6d33f81c5c4d8ec14 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 15735036 0032079X |
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