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dc.contributor.authorTerzano R
dc.contributor.authorCuccovillo G
dc.contributor.authorPascazio S
dc.contributor.authorCrecchio C
dc.contributor.authorLettino A
dc.contributor.authorFiore S
dc.contributor.authorTomasi N
dc.contributor.authorPinton R
dc.contributor.authorMimmo T
dc.contributor.authorCesco S
dc.contributor.editor
dc.date.accessioned2017-11-10T08:02:15Z
dc.date.available2017-11-10T08:02:15Z
dc.date.issued2017
dc.identifier.issn0178-2762
dc.identifier.urihttp://dx.doi.org/10.1007/s00374-016-1164-y
dc.identifier.urihttps://link.springer.com/article/10.1007/s00374-016-1164-y
dc.identifier.urihttp://hdl.handle.net/10863/3645
dc.description.abstractIn this study, we provide experimental evidences that in calcareous soils microbial degradation/decomposition of citrate can promote Al-(hydr)oxide precipitation concurrently decreasing copper (Cu) solubility by a coprecipitation process. Citrate is an organic acid anion commonly released by roots to increase nutrient availability or to limit Al toxicity. However, under specific environmental conditions (i.e. high microbial activity of Al-citrate-degrading bacteria, alkaline pH), this organic acid may become ineffective in mobilizing Cu for the plant acquisition process. To demonstrate this, a calcareous soil and an artificial soil system have been treated with citrate solutions; then, changes in Al and Cu solubility and the formation of Cu-containing Al-(hydr)oxides were monitored. Both in experiments with the artificial soil and in those where the soil was inoculated with microbial strains, the formation of Cu-Al coprecipitates not only occurred but was also concurrent with the decrease of Cu and Al solubility. The role of bacteria in metal-citrate complex degradation has been assessed, and the 16S rDNA of bacteria related with these processes has been sequenced for genus identification. Bacteria belonging to Pseudomonas, Sphingomonas, Bradyrhizobium and Sphingopixis have been identified as possible candidates to degrade Al- and Cu-citrate complexes thus triggering the metal precipitation phenomena.en_US
dc.language.isoenen_US
dc.publisherSpringer Verlagen_US
dc.rights
dc.subjectCopperen_US
dc.subjectAluminiumen_US
dc.subjectSoil microorganismsen_US
dc.subjectCoprecipitationen_US
dc.subjectCitrateen_US
dc.subjectCalcareous soilen_US
dc.titleDegradation of citrate promotes copper co-precipitation within aluminium-(hydr)oxides in calcareous soilsen_US
dc.typeArticleen_US
dc.date.updated2017-07-10T13:07:18Z
dc.publication.title
dc.language.isiEN-GB
dc.journal.titleBiology and Fertility of Soils
dc.description.fulltextreserveden_US


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