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Mitigation of salt stress in white clover (Trifolium repens) by Azospirillum brasilense and its inoculation effect
BACKGROUND: Salinity is one of the increasingly serious environmental problems worldwide for cultivating agricultural crops. The present study was aimed to ascertain the potential of beneficial soil bacterium Azospirillum brasilense to alleviate saline stress in Trifolium repens. Experimental plants...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5432925/ https://www.ncbi.nlm.nih.gov/pubmed/28510188 http://dx.doi.org/10.1186/s40529-016-0160-8 |
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author | Khalid, Muhammad Bilal, Muhammad Hassani, Danial Iqbal, Hafiz M. N. Wang, Hang Huang, Danfeng |
author_facet | Khalid, Muhammad Bilal, Muhammad Hassani, Danial Iqbal, Hafiz M. N. Wang, Hang Huang, Danfeng |
author_sort | Khalid, Muhammad |
collection | PubMed |
description | BACKGROUND: Salinity is one of the increasingly serious environmental problems worldwide for cultivating agricultural crops. The present study was aimed to ascertain the potential of beneficial soil bacterium Azospirillum brasilense to alleviate saline stress in Trifolium repens. Experimental plants (white clover) were grown from seeds and inoculated with or without A. brasilense bacterial strain supplemented with 0, 40, 80, or 120 mM NaCl into soil. RESULTS: The growth attributes including, shoot heights, root lengths, fresh and dry weights, leaf area and chlorophyll content were significantly enhanced in T. repens plants grown in A. brasilense inoculated soil than un-inoculated controls, particularly under elevated salinity conditions (40, 80 and 120 mM NaCl). Malondialdehyde content of leaf was recorded to be declined under saline conditions. Moreover, the K(+)/Na(+) ratio was also improved in bacterium-inoculated plants, since A. brasilense significantly reduced the root and shoot Na(+) level under high salty environment. CONCLUSIONS: Results revealed that soil inoculation with A. brasilense could significantly promote T. repens growth under both non-saline and saline environments, and this study might be extended to other vegetables and crops for the germination and growth enhancement. |
format | Online Article Text |
id | pubmed-5432925 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-54329252017-05-31 Mitigation of salt stress in white clover (Trifolium repens) by Azospirillum brasilense and its inoculation effect Khalid, Muhammad Bilal, Muhammad Hassani, Danial Iqbal, Hafiz M. N. Wang, Hang Huang, Danfeng Bot Stud Original Article BACKGROUND: Salinity is one of the increasingly serious environmental problems worldwide for cultivating agricultural crops. The present study was aimed to ascertain the potential of beneficial soil bacterium Azospirillum brasilense to alleviate saline stress in Trifolium repens. Experimental plants (white clover) were grown from seeds and inoculated with or without A. brasilense bacterial strain supplemented with 0, 40, 80, or 120 mM NaCl into soil. RESULTS: The growth attributes including, shoot heights, root lengths, fresh and dry weights, leaf area and chlorophyll content were significantly enhanced in T. repens plants grown in A. brasilense inoculated soil than un-inoculated controls, particularly under elevated salinity conditions (40, 80 and 120 mM NaCl). Malondialdehyde content of leaf was recorded to be declined under saline conditions. Moreover, the K(+)/Na(+) ratio was also improved in bacterium-inoculated plants, since A. brasilense significantly reduced the root and shoot Na(+) level under high salty environment. CONCLUSIONS: Results revealed that soil inoculation with A. brasilense could significantly promote T. repens growth under both non-saline and saline environments, and this study might be extended to other vegetables and crops for the germination and growth enhancement. Springer Berlin Heidelberg 2017-01-03 /pmc/articles/PMC5432925/ /pubmed/28510188 http://dx.doi.org/10.1186/s40529-016-0160-8 Text en © The Author(s) 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
spellingShingle | Original Article Khalid, Muhammad Bilal, Muhammad Hassani, Danial Iqbal, Hafiz M. N. Wang, Hang Huang, Danfeng Mitigation of salt stress in white clover (Trifolium repens) by Azospirillum brasilense and its inoculation effect |
title | Mitigation of salt stress in white clover (Trifolium repens) by Azospirillum brasilense and its inoculation effect |
title_full | Mitigation of salt stress in white clover (Trifolium repens) by Azospirillum brasilense and its inoculation effect |
title_fullStr | Mitigation of salt stress in white clover (Trifolium repens) by Azospirillum brasilense and its inoculation effect |
title_full_unstemmed | Mitigation of salt stress in white clover (Trifolium repens) by Azospirillum brasilense and its inoculation effect |
title_short | Mitigation of salt stress in white clover (Trifolium repens) by Azospirillum brasilense and its inoculation effect |
title_sort | mitigation of salt stress in white clover (trifolium repens) by azospirillum brasilense and its inoculation effect |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5432925/ https://www.ncbi.nlm.nih.gov/pubmed/28510188 http://dx.doi.org/10.1186/s40529-016-0160-8 |
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