Moving carbon between spheres, the potential oxalate-carbonate pathway of Brosimum alicastrum Sw.; Moraceae

Détails

Ressource 1Télécharger: Rowley et al., 2017 Moving carbon between spheres, the potential oxalate-carbonate pathway of Brosimum alicastrum Sw.; Moraceae.pdf (1852.64 [Ko])
Etat: Public
Version: Final published version
ID Serval
serval:BIB_3965D63FA3D9
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Moving carbon between spheres, the potential oxalate-carbonate pathway of Brosimum alicastrum Sw.; Moraceae
Périodique
Plant and Soil
Auteur(s)
Rowley Mike C., Estrada-Medina Héctor, Tzec-Gamboa Magnolia, Rozin Aviram, Cailleau Guillaume, Verrecchia Eric P., Green Iain
ISSN
0032-079X
1573-5036
Statut éditorial
Publié
Date de publication
03/2017
Peer-reviewed
Oui
Volume
412
Numéro
1-2
Pages
465-479
Langue
anglais
Résumé
Aims
The Oxalate-Carbonate Pathway (OCP) is a biogeochemical process that transfers atmospheric CO2 into the geologic reservoir as CaCO3; however, until now all investigations on this process have focused on species with limited food benefits. This study evaluates a potential OCP associated with Brosimum alicastrum, a Neotropical species with agroforestry potential (ca. 70–200 kg-nuts yr−1), in the calcareous soils of Haiti and Mexico.
Methods / results
Enzymatic analysis demonstrated significant concentrations of calcium oxalate (5.97 % D.W.) were associated with B. alicastrum tissue in all sample sites. The presence of oxalotrophism was also confirmed with microbiological analyses in both countries. High concentrations of total calcium (>7 g kg−1) and lithogenic carbonate obscured the localised alkalinisation and identification of secondary carbonate associated with the OCP at most sample sites, except Ma Rouge, Haiti. Soils adjacent to subjects in Ma Rouge demonstrated an increase in pH (0.63) and CaCO3 concentration (5.9 %) that, when coupled with root-like secondary carbonate deposits in Mexico, implies that the OCP does also occur in calcareous soils.
Conclusions
Therefore this study confirms that the OCP also occurs in calcareous soils, adjacent to B. alicastrum, and could play a fundamental and un-accounted role in the global calcium-carbon coupled cycle.
Mots-clé
Oxalate-Carbonate Pathway (OCP) Brosimum alicastrum Calcium oxalate Carbon-calcium cycle Oxalotrophic bacteria
Web of science
Open Access
Oui
Création de la notice
18/12/2016 15:53
Dernière modification de la notice
21/08/2019 6:08
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