Evaluación de la tolerancia al cobre de dos poblaciones de Oenothera picensis Phil. subsp. picensis (Onagraceae)

Translated title of the contribution: Assessment of copper tolerance of two populations of Oenothera picensis Phil. subsp. picensis (Onagraceae)

Isabel González, Alexander Neaman

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Oenothera picensis Phil. subsp. picensis can grow in soils that have been contaminated with copper from the metal smeltingindustry in central Chile, presenting characteristics that make it a candidate for phytoremediation processes. In order toknow the real tolerance and capacity for copper extraction and to identify whether this characteristic is present solelyin the exposed population, a hydroponic test was carried out using two populations of O. picensis, originated from LosMaitenes and Maitencillo, areas with high and normal Cu concentrations in the soil, respectively. The plants were exposedto copper concentration in solution between 0 and 0.16 mM, for one month. The plants presented symptoms of toxicityat 0.04 mM of Cu in the solution, without significant differences in the tolerance of both populations. The shoot copperconcentrations observed in O. picensis reached the maximum of 1660±857 mg kg-1, in the treatment of 0.16 mM of Cu inthe solution. However, in this treatment, the plant presented severe toxicity symptoms. Thus, it is not possible to classify itas a hyperaccumulating species.

Translated title of the contributionAssessment of copper tolerance of two populations of Oenothera picensis Phil. subsp. picensis (Onagraceae)
Original languageSpanish
Pages (from-to)240-249
Number of pages10
JournalGayana - Botanica
Volume72
Issue number2
DOIs
StatePublished - Dec 2015
Externally publishedYes

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