Isolated bacteria from saline–sodic soils alter the response of wheat under high adsorbed sodium and salt stress
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- 作者：R. Soleimani ; H. A. Alikhani ; H. Towfighi…
- 关键词：Arthrobacter siccitolerans ; Indole ; 3 ; acetic acid ; l ; Tryptophan ; Saline–sodic soils
- 刊名：International Journal of Environmental Science and Technology
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：14
- 期：1
- 页码：143-150
- 全文大小：
- 刊物主题：Environment, general; Environmental Science and Engineering; Environmental Chemistry; Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution; Soil Science & Conservati
- 出版者：Springer Berlin Heidelberg
- ISSN：1735-2630
- 卷排序：14
文摘
This investigation was carried out for evaluation of indole-3-acetic acid production by bacteria under salinity and salinity–sodicity stress. A total of 298 bacteria were isolated from soils with different levels of electrical conductivity and sodium adsorption ratio. Then, ability of indole-3-acetic acid production under salinity, salinity–sodicity and l-tryptophan concentrations was analyzed. The results indicated that the ability of growth and indole-3-acetic acid production among bacteria was significantly affected by salinity, salinity–sodicity and l-tryptophan concentration. The one of the bacterial species, Arthrobacter siccitolerans, that were isolated from saline–sodic soils can adjust its indole-3-acetic acid production to different levels of salinity and salinity–sodicity stress conditions. Also, its l-TRP use efficiency under salinity–sodicity stress was 5.01% and reported as the most efficient bacterium. Seed inoculation of A. siccitolerans enhanced wheat aerial and root dry matter under salinity–sodicity stress with respect to control by 10.03 and 15.17%, respectively. The study indicates the different effects of salinity–sodicity on indole-3-acetic acid indole-3-acetic acid production and the potential of A. siccitolerans for production of indole-3-acetic acid and enhancing growth of wheat under salinity and salinity–sodicity stress.