Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/216483
COMPARTIR / EXPORTAR:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE

Invitar a revisión por pares abierta
Título

Strategies in a metallophyte species to cope with manganese excess

AutorRossini Oliva, S.; Abreu, M. M.; González Grau, Juan Miguel CSIC ORCID
Palabras claveErica andevalensis
Manganese
Metallophytes
Uptake
Organic acids
Amino acids
Catalase
Peroxidase
Superoxide dismutase
Fecha de publicación26-jun-2020
EditorSpringer Nature
CitaciónEnvironmental Geochemistry and Health (2020) https://doi.org/10.1007/s10653-020-00625-z
ResumenThe effect of exposure to high Mn concentration was studied in a metallophyte species, Erica andevalensis, using hydroponic cultures with a range of Mn concentrations (0.06, 100, 300, 500, and 700 mg L−1). At harvest, biomass production, element uptake, and biochemical indicators of metal stress (leaf pigments, organic acids, amino acids, phenols, and activities of catalase, peroxidase, superoxide dismutase) were determined in leaves and roots. Increasing Mn concentrations led to a decrease in biomass accumulation, and tip leaves chlorosis was the only toxicity symptom detected. In a similar way, photosynthetic pigments (chlorophylls a and b, and carotenoids) were affected by high Mn levels. Among organic acids, malate and oxalate contents in roots showed a significant increase at the highest Mn concentration, while in leaves, Mn led to an increasing trend in citrate and malate contents. An increase of Mn also induced an increase in superoxide dismutase activity in roots and catalase activity in leaves. As well, significant changes in free amino acids were induced by Mn concentrations higher than 300 mg L−1, especially in roots. No significant changes in phenolic compounds were observed in the leaves, but root phenolics were significantly increased by increasing Mn concentrations in treatments. When Fe supply was increased 10 and 20 times (7–14 mg Fe L−1 as Fe-EDDHA) in the nutrient solutions at the highest Mn concentration (700 mg Mn L−1), it led to significant increases in photosynthetic pigments and biomass accumulation. Manganese was mostly accumulated in the roots, and the species was essentially a Mn excluder. However, considering the high leaf Mn concentration recorded without toxicity symptoms, E. andevalensis might be rated as a Mn-tolerant species.
Descripción13 páginas.- 5 figuras.- 6 tablas.- referencias
Versión del editorhttp://dx.doi.org/10.1007/s10653-020-00625-z
URIhttp://hdl.handle.net/10261/216483
DOI10.1007/s10653-020-00625-z
ISSN0269-4042
E-ISSN1573-2983
Aparece en las colecciones: (IRNAS) Artículos




Ficheros en este ítem:
Mostrar el registro completo

CORE Recommender

SCOPUSTM   
Citations

3
checked on 15-mar-2024

WEB OF SCIENCETM
Citations

3
checked on 23-feb-2024

Page view(s)

166
checked on 28-mar-2024

Download(s)

97
checked on 28-mar-2024

Google ScholarTM

Check

Altmetric

Altmetric


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.