Manganese accumulation in plants of the mining zone of Hidalgo, Mexico.
Soil, sediments, water and plant samples from the mining zone of Molango were collected and analyzed and Mn-tolerant and Mn-accumulator plants were identified. Soil and sediments presented moderately alkaline and reducing conditions, a normal electrical conductivity, a sandy texture and medium-to-high cation exchange capacities. These properties favored the presence of Mn(2+), which is the form most easily assimilated by plants, and the total Mn concentration (11,637-106,104 mg kg(-1) dried weight, DW) was at phytotoxic level. Water was also an important Mn source. Equisetum hyemale and Telypteris kunthii survived in the presence of such Mn concentrations using an exclusion strategy, while Cnidoscolus multilobus, Platanus mexicana, Solanum diversifolium, Asclepius curassavica L. and Pluchea sympitifolia employed an accumulation strategy. These plants could be useful to re-vegetate and stabilize Mn tailings in order to decrease the erosion effects.
Juárez-Santillán
Luis Felipe
LF
Universidad Autónoma del Estado de Hidalgo, Centro de Investigaciones Químicas, Laboratorio de Ciencias Ambientales, Carretera Pachuca-Tulancingo km 4.5, Ciudad Universitaria, C.P. 42184, Mineral de la Reforma, Hgo., Mexico.
Lucho-Constantino
Carlos Alexander
CA
Vázquez-Rodríguez
Gabriela Alejandra
GA
Cerón-Ubilla
Nayeli Mariel
NM
Beltrán-Hernández
Rosa Icela
RI
D001673:Biodegradation, Environmental; D007220:Industrial Waste / Q000517:prevention & control; D008345:Manganese / Q000302:isolation & purification* / Q000493:pharmacokinetics*; D008800:Mexico; D008906:Mining; D018517:Plant Roots / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification* / Q000493:pharmacokinetics*; D018508:Water Purification / Q000379:methods*
D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D008345:Manganese