We studied the molecular diversity of ß-glucosidaseencoding genes, microbial biomass, cellulase, N-acetylglucosaminidase, ß-glucosidase, and ß-galactosidase activities in the rhizosphere and bulk soil of two maize lines differing in nitrogen use efficiency (NUE). The maize lines had significant differences in diversity of ß-glucosidase-encoding genes in their rhizosphere, and Actinobacteria and Proteobacteria were the dominating phyla in all samples, but representatives of Bacteroidetes, Chloroflexi, Deinococcus-Thermus, Firmicutes, and Cyanobacteria were also detected. Among the Proteobacteria, ß-glucosidase genes from a-, ß-, and γProteobacteria were dominant in the rhizosphere of the high NUE maize line, whereas d-Proteobacteria ß-glucosidase genes were dominant in the rhizosphere of the low NUE maize line. The high NUE maize line also showed higher glucosidase activities in the rhizosphere than the low NUE maize line. We concluded that plants with high NUE select bacterial communities in the rhizosphere differing in the diversity of ß-glucosidaseencoding genes which likely result in higher C-hydrolyzing enzyme activities. These effects on the diversity of ß-glucosidase-encoding genes may influence the C dynamics in the agroecosystems.

Maize lines with different nitrogen use efficiency select bacterial communities with different β-glucosidase-encoding genes and glucosidase activity in the rhizosphere / Pathan, Shamina I; Ceccherini, Maria Teresa; Hansen, Martin Asser; Giagnoni, Laura; Ascher, Judith; Arenella, Mariarita; Sørensen, Søren J.; Pietramellara, Giacomo; Nannipieri, Paolo; Renella, Giancarlo. - In: BIOLOGY AND FERTILITY OF SOILS. - ISSN 0178-2762. - STAMPA. - 51:(2015), pp. 995-1004. [10.1007/s00374-015-1045-9]

Maize lines with different nitrogen use efficiency select bacterial communities with different β-glucosidase-encoding genes and glucosidase activity in the rhizosphere

PATHAN, SHAMINA IMRAN;CECCHERINI, MARIA TERESA;GIAGNONI, LAURA;ASCHER, JUDITH;ARENELLA, MARIARITA;PIETRAMELLARA, GIACOMO;NANNIPIERI, PAOLO;RENELLA, GIANCARLO
2015

Abstract

We studied the molecular diversity of ß-glucosidaseencoding genes, microbial biomass, cellulase, N-acetylglucosaminidase, ß-glucosidase, and ß-galactosidase activities in the rhizosphere and bulk soil of two maize lines differing in nitrogen use efficiency (NUE). The maize lines had significant differences in diversity of ß-glucosidase-encoding genes in their rhizosphere, and Actinobacteria and Proteobacteria were the dominating phyla in all samples, but representatives of Bacteroidetes, Chloroflexi, Deinococcus-Thermus, Firmicutes, and Cyanobacteria were also detected. Among the Proteobacteria, ß-glucosidase genes from a-, ß-, and γProteobacteria were dominant in the rhizosphere of the high NUE maize line, whereas d-Proteobacteria ß-glucosidase genes were dominant in the rhizosphere of the low NUE maize line. The high NUE maize line also showed higher glucosidase activities in the rhizosphere than the low NUE maize line. We concluded that plants with high NUE select bacterial communities in the rhizosphere differing in the diversity of ß-glucosidaseencoding genes which likely result in higher C-hydrolyzing enzyme activities. These effects on the diversity of ß-glucosidase-encoding genes may influence the C dynamics in the agroecosystems.
2015
51
995
1004
Pathan, Shamina I; Ceccherini, Maria Teresa; Hansen, Martin Asser; Giagnoni, Laura; Ascher, Judith; Arenella, Mariarita; Sørensen, Søren J.; Pietramellara, Giacomo; Nannipieri, Paolo; Renella, Giancarlo
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1009571
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