Characterization of new soil thermophilic bacteria potentially involved in soil fertilization
Thermophilic bacteria were isolated from a soil of an olive grove in Alentejo (Portugal) and characterized morphologically, physiologically, and at the molecular level by partial sequencing of the 16S ribosomal RNA genes, followed by subsequent phylogenetic analysis. The isolates were shown to be gram-positive rods, motile, and to belong to the Firmicutes Phylum. They were able to produce ammonium and sulfate during growth, the levels of which vary among the bacterial isolates. This ability suggests that these bacteria may have an important role in the mobilization of organic S and N in the soil and therefore in providing essential nutrients for plant growth. Tests using two isolates indicated a positive effect on initial seedling development suggesting their potential use in soil nutrient supplementation. The presence of these thermophiles in arable temperate soils might be increasingly important, particularly when the predicted global climate warming is considered, and their features are discussed in this context and considering actual strategies to improve soil fertilization.
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John Wiley & Sons
2013
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Online Access: | http://hdl.handle.net/10261/79742 |
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dig-irnas-es-10261-797422018-09-11T10:23:45Z Characterization of new soil thermophilic bacteria potentially involved in soil fertilization Santana, Margarida Portillo Guisado, María del Carmen González Grau, Juan Miguel Clara, María I. E. Thermophilic bacteria were isolated from a soil of an olive grove in Alentejo (Portugal) and characterized morphologically, physiologically, and at the molecular level by partial sequencing of the 16S ribosomal RNA genes, followed by subsequent phylogenetic analysis. The isolates were shown to be gram-positive rods, motile, and to belong to the Firmicutes Phylum. They were able to produce ammonium and sulfate during growth, the levels of which vary among the bacterial isolates. This ability suggests that these bacteria may have an important role in the mobilization of organic S and N in the soil and therefore in providing essential nutrients for plant growth. Tests using two isolates indicated a positive effect on initial seedling development suggesting their potential use in soil nutrient supplementation. The presence of these thermophiles in arable temperate soils might be increasingly important, particularly when the predicted global climate warming is considered, and their features are discussed in this context and considering actual strategies to improve soil fertilization. Margarida Santana was supported by the program Ciência 2008 from Fundação para a Ciência e a Tecnologia. This research was funded by the Instituto de Ciências Agrárias e Ambientais Mediterrânicas Incentive Program for Research. Peer Reviewed 2013-07-16T12:02:13Z 2013-07-16T12:02:13Z 2013 2013-07-16T12:02:13Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1002/jpln.201100382 issn: 1436-8730 e-issn: 1522-2624 Journal of Plant Nutrition and Soil Science 176(1): 47- 56 (2013) http://hdl.handle.net/10261/79742 10.1002/jpln.201100382 en none John Wiley & Sons |
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Thermophilic bacteria were isolated from a soil of an olive grove in Alentejo (Portugal) and characterized morphologically, physiologically, and at the molecular level by partial sequencing of the 16S ribosomal RNA genes, followed by subsequent phylogenetic analysis. The isolates were shown to be gram-positive rods, motile, and to belong to the Firmicutes Phylum. They were able to produce ammonium and sulfate during growth, the levels of which vary among the bacterial isolates. This ability suggests that these bacteria may have an important role in the mobilization of organic S and N in the soil and therefore in providing essential nutrients for plant growth. Tests using two isolates indicated a positive effect on initial seedling development suggesting their potential use in soil nutrient supplementation. The presence of these thermophiles in arable temperate soils might be increasingly important, particularly when the predicted global climate warming is considered, and their features are discussed in this context and considering actual strategies to improve soil fertilization. |
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artículo |
author |
Santana, Margarida Portillo Guisado, María del Carmen González Grau, Juan Miguel Clara, María I. E. |
spellingShingle |
Santana, Margarida Portillo Guisado, María del Carmen González Grau, Juan Miguel Clara, María I. E. Characterization of new soil thermophilic bacteria potentially involved in soil fertilization |
author_facet |
Santana, Margarida Portillo Guisado, María del Carmen González Grau, Juan Miguel Clara, María I. E. |
author_sort |
Santana, Margarida |
title |
Characterization of new soil thermophilic bacteria potentially involved in soil fertilization |
title_short |
Characterization of new soil thermophilic bacteria potentially involved in soil fertilization |
title_full |
Characterization of new soil thermophilic bacteria potentially involved in soil fertilization |
title_fullStr |
Characterization of new soil thermophilic bacteria potentially involved in soil fertilization |
title_full_unstemmed |
Characterization of new soil thermophilic bacteria potentially involved in soil fertilization |
title_sort |
characterization of new soil thermophilic bacteria potentially involved in soil fertilization |
publisher |
John Wiley & Sons |
publishDate |
2013 |
url |
http://hdl.handle.net/10261/79742 |
work_keys_str_mv |
AT santanamargarida characterizationofnewsoilthermophilicbacteriapotentiallyinvolvedinsoilfertilization AT portilloguisadomariadelcarmen characterizationofnewsoilthermophilicbacteriapotentiallyinvolvedinsoilfertilization AT gonzalezgraujuanmiguel characterizationofnewsoilthermophilicbacteriapotentiallyinvolvedinsoilfertilization AT claramariaie characterizationofnewsoilthermophilicbacteriapotentiallyinvolvedinsoilfertilization |
_version_ |
1777664624185835520 |