Is it safe to commercialize ornamental plants irrigated with antimicrobial-contaminated water?

Author:

Rocha Camila Silva1,Kochi Leticia Yoshie1,Brito Julio Cesar Moreira2,Kitamura Rafael Shinji Akiyama1,Carneiro Daniella Moreira1,Reis Michele Valquíria dos3,Gomes Marcelo Pedrosa4ORCID

Affiliation:

1. Universidade Federal do Parana

2. Funed: Fundacao Ezequiel Dias

3. Universidade Federal de Lavras

4. UFPR: Universidade Federal do Parana

Abstract

Abstract Enrofloxacin (Enro) has been widely encountered in natural water sources, and that water is often used for irrigation in crop production systems. Due to its phytotoxicity and accumulation in plant tissues, the presence of Enro in water used for crop irrigation may represent economical and toxicological concerns. Here, we irrigated two ornamental plant species (Zantedeschia rehmannii and Spathiphyllum wallisii) with water artificially contaminated with the antimicrobial enrofloxacin (Enro; 0, 5, 10, 100 and 1000 µg L− 1) to evaluate its effects on ornamental plant production, as well as its accumulation and distribution among different plant organs (roots, leaves, bulbs, and flower stems), and examined the economic and environmental safety of commercializing plants produced under conditions of pharmaceutical contamination. The presence of Enro in irrigation water was not found to disrupt plant growth (biomass) or flower production. Both species accumulated Enro, with its internal concentrations distributed as following: roots > leaves > bulbs > flower stems. In addition to plant tolerance, the content of Enro in plant organs indicated that both Z. rehmannii and S. wallisii could be safety produced under Enro-contaminated conditions and would not significantly contribute to contaminant transfer. The high capacity of those plants to accumulate Enro in their tissues, associated with their tolerance to it, indicates them for use in Enro-phytoremediation programs.

Publisher

Research Square Platform LLC

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