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Bacterial colonization of a fumigated alkaline saline soil

By: Bello-Lopez, J.M.
Contributor(s): Delgado-Balbuena, L [coaut.] | Dendooven, L | Dominguez-Mendoza, C.A [coaut.] | Gomez-Acata, S [coaut.] | Leon-Lorenzana, A.S. de [coaut.] | Luna-Guido, M [coaut.] | Navarro-Noya, Y.E [coaut.] | Rodriguez-Valentin, A [coaut.] | Ruiz-Valdiviezo, V.M [coaut.] | Verhulst, N [coaut.] | Govaerts, B.
Material type: materialTypeLabelArticlePublisher: 2014ISSN: 1433-4909 (Revista en electrónico); 1431-0651.Subject(s): Alkaliphiles | Biodiversity AGROVOC | Ecology | Halophile: ecology, biotechnology, phylogeny, genetics, taxonomy, enzymes | Molecular Biology | Systematics, ecology, phylogeny In: Extremophiles v. 18, no. 4, p. 733-743Summary: After chloroform fumigating an arable soil, the relative abundance of phylotypes belonging to only two phyla (Actinobacteria and Firmicutes) and two orders [Actinomycetales and Bacillales (mostly Bacillus)] increased in a subsequent aerobic incubation, while it decreased for a wide range of bacterial groups. It remained to be seen if similar bacterial groups were affected when an extreme alkaline saline soil was fumigated. Soil with electrolytic conductivity between 139 and 157 dS m−1, and pH 10.0 and 10.3 was fumigated and the bacterial community structure determined after 0, 1, 5 and 10 days by analysis of the 16S rRNA gene, while an unfumigated soil served as control. The relative abundance of the Firmicutes increased in the fumigated soil (52.8 %) compared to the unfumigated soil (34.2 %), while that of the Bacteroidetes decreased from 16.2 % in the unfumigated soil to 8.8 % in the fumigated soil. Fumigation increased the relative abundance of the genus Bacillus from 14.7 % in the unfumigated soil to 25.7 %. It was found that phylotypes belonging to the Firmicutes, mostly of the genus Bacillus, were dominant in colonizing the fumigated alkaline saline as found in the arable soil, while the relative abundance of a wide range of bacterial groups decreased.Collection: CIMMYT Staff Publications Collection
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Article CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Staff Publications Collection Available
Total holds: 0

Peer-review: Yes - Open Access: Yes|http://ip-science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=1431-0651

After chloroform fumigating an arable soil, the relative abundance of phylotypes belonging to only two phyla (Actinobacteria and Firmicutes) and two orders [Actinomycetales and Bacillales (mostly Bacillus)] increased in a subsequent aerobic incubation, while it decreased for a wide range of bacterial groups. It remained to be seen if similar bacterial groups were affected when an extreme alkaline saline soil was fumigated. Soil with electrolytic conductivity between 139 and 157 dS m−1, and pH 10.0 and 10.3 was fumigated and the bacterial community structure determined after 0, 1, 5 and 10 days by analysis of the 16S rRNA gene, while an unfumigated soil served as control. The relative abundance of the Firmicutes increased in the fumigated soil (52.8 %) compared to the unfumigated soil (34.2 %), while that of the Bacteroidetes decreased from 16.2 % in the unfumigated soil to 8.8 % in the fumigated soil. Fumigation increased the relative abundance of the genus Bacillus from 14.7 % in the unfumigated soil to 25.7 %. It was found that phylotypes belonging to the Firmicutes, mostly of the genus Bacillus, were dominant in colonizing the fumigated alkaline saline as found in the arable soil, while the relative abundance of a wide range of bacterial groups decreased.

Conservation Agriculture Program

English

Springer|CIMMYT Informa No. 1906

Lucia Segura

INT2813|INT3307

CIMMYT Staff Publications Collection

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