2019
DOI: 10.1111/1365-2435.13324
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Specialized roots of Velloziaceae weather quartzite rock while mobilizing phosphorus using carboxylates

Abstract: Campos rupestres is an extremely phosphorus (P)‐impoverished rocky ecosystem in Brazil. Velloziaceae is an important plant family in this environment, and some species colonize exposed quartzite rock. However, we know virtually nothing about their root development and nutrient acquisition within the rock outcrops and their possible role in rock weathering and landscape formation. We tested the hypothesis that Velloziaceae dissolve P from the rock, enhancing rock weathering. The study was carried out with two B… Show more

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Cited by 48 publications
(42 citation statements)
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“…Although the studied areas are located within the Cerrado, the very distinct rock parent material provided opportunities for a very distinct flora (Colli‐Silva, Vasconcelos, & Pirani, ; Silveira et al, ). Campos rupestres are known for their high plant species diversity (Alves & Kolbek, ; Le Stradic, Buisson, & Fernandes, ), which is strongly related to substrate heterogeneity (Luz et al, ; Negreiros, Le Stradic, Fernandes, & Rennó, ; Teodoro et al, ). The rock parent material is extremely nutrient poor, leading to nutrient‐impoverished soils, with acidic pH, high aluminium (Al) concentrations and low magnesium (Mg) and calcium (Ca) concentrations (Benites et al, ).…”
Section: Methodsmentioning
confidence: 99%
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“…Although the studied areas are located within the Cerrado, the very distinct rock parent material provided opportunities for a very distinct flora (Colli‐Silva, Vasconcelos, & Pirani, ; Silveira et al, ). Campos rupestres are known for their high plant species diversity (Alves & Kolbek, ; Le Stradic, Buisson, & Fernandes, ), which is strongly related to substrate heterogeneity (Luz et al, ; Negreiros, Le Stradic, Fernandes, & Rennó, ; Teodoro et al, ). The rock parent material is extremely nutrient poor, leading to nutrient‐impoverished soils, with acidic pH, high aluminium (Al) concentrations and low magnesium (Mg) and calcium (Ca) concentrations (Benites et al, ).…”
Section: Methodsmentioning
confidence: 99%
“…The samples were immediately stored in 50% (v/v) ethanol. Prior to mycorrhizal assessment, all the roots were examined for the presence of long root hairs that formed rhizosheaths or vellozioid roots (Brown et al, ; Pang et al, ; Teodoro et al, ) with a stereomicroscope (Leica M80) and photographed with a Leica DFC295 3.0 MP digital camera with focus stacking using Leica Application Suite 3.8.0 (Leica). The presence of rhizosheaths was recorded, if the roots still had soil attached after shaking the roots in the vials and gently scrubbing with a paint brush (Buckley, ).…”
Section: Methodsmentioning
confidence: 99%
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