Mineral Nutrition Of Campos Rupestres Plant Species On Contrasting Nutrient-impoverished Soil Types.

dc.creatorOliveira, Rafael S
dc.creatorGalvão, Hugo C
dc.creatorde Campos, Mariana C R
dc.creatorEller, Cleiton B
dc.creatorPearse, Stuart J
dc.creatorLambers, Hans
dc.date2015-Feb
dc.date2015-11-27T13:46:40Z
dc.date2015-11-27T13:46:40Z
dc.date.accessioned2018-03-29T01:24:09Z
dc.date.available2018-03-29T01:24:09Z
dc.identifierThe New Phytologist. v. 205, n. 3, p. 1183-94, 2015-Feb.
dc.identifier1469-8137
dc.identifier10.1111/nph.13175
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/25425486
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/202289
dc.identifier25425486
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1302522
dc.descriptionIn Brazil, the campos rupestres occur over the Brazilian shield, and are characterized by acidic nutrient-impoverished soils, which are particularly low in phosphorus (P). Despite recognition of the campos rupestres as a global biodiversity hotspot, little is known about the diversity of P-acquisition strategies and other aspects of plant mineral nutrition in this region. To explore nutrient-acquisition strategies and assess aspects of plant P nutrition, we measured leaf P and nitrogen (N) concentrations, characterized root morphology and determined the percentage arbuscular mycorrhizal (AM) colonization of 50 dominant species in six communities, representing a gradient of soil P availability. Leaf manganese (Mn) concentration was measured as a proxy for carboxylate-releasing strategies. Communities on the most P-impoverished soils had the highest proportion of nonmycorrhizal (NM) species, the lowest percentage of mycorrhizal colonization, and the greatest diversity of root specializations. The large spectrum of leaf P concentration and variation in root morphologies show high functional diversity for nutritional strategies. Higher leaf Mn concentrations were observed in NM compared with AM species, indicating that carboxylate-releasing P-mobilizing strategies are likely to be present in NM species. The soils of the campos rupestres are similar to the most P-impoverished soils in the world. The prevalence of NM strategies indicates a strong global functional convergence in plant mineral nutrition strategies among severely P-impoverished ecosystems.
dc.description205
dc.description1183-94
dc.languageeng
dc.relationThe New Phytologist
dc.relationNew Phytol.
dc.rightsfechado
dc.rights© 2014 The Authors. New Phytologist © 2014 New Phytologist Trust.
dc.sourcePubMed
dc.subjectCerrado
dc.subjectDauciform Roots
dc.subjectLeaf Manganese (mn) Concentration
dc.subjectLeaf Nutrient Concentrations
dc.subjectMycorrhizas
dc.subjectNitrogen : phosphorus (n : p) Ratio
dc.subjectPhosphorus Nutrition
dc.subjectSand-binding Roots
dc.titleMineral Nutrition Of Campos Rupestres Plant Species On Contrasting Nutrient-impoverished Soil Types.
dc.typeArtículos de revistas


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