Evaluation of tolerance and the phytoremediation potential of Peltophorum dubium in soil contaminated with lead (Pb)

• Grant number: 16/05485-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): July 01, 2016
• Effective date (End): February 28, 2018
• Field of knowledge: Biological Sciences - Botany - Applied Botany
• Principal Investigator: Liliane Santos de Camargos
• Grantee: Wesller da Silva de Paiva
• Host Institution: Faculdade de Engenharia (FEIS). Universidade Estadual Paulista (UNESP). Campus de Ilha Solteira. Ilha Solteira , SP, Brazil

Abstract

The soil contamination by heavy metals is a problem that has long worried the population, and increasingly has increased the number of contaminated sites due to the large increase in industrial activities that use these elements during finishing processes. In this way, the MPs are an important group of contaminants and of much interest to conservation studies of the environment and human health. According CETESB, at lead, the reference value of concentration 17 mg kg-1; value of prevention 72 mg kg-1 and values of 300 mg kg-1 are already considered high and require intervention, agricultural areas should not have levels greater than 180 mg kg-1 and industrial areas 900 mg kg-1. In plants, MPs are also nutrients are not absorbed by the cells for presenting physical and chemical similarities which are nutrient elements. An environmentally friendly alternative is phytoremediation, which are used tolerant plants to heavy metal removal or stabilization of the contaminant in the soil. Peltophorum dubium is a leguminous tree species that non-fixing nitrogen and is a specie of initial colonization, feature that allows implantation into areas previously occupied by crops, for example. Thus, the main objective of this study is to characterize tolerance and phytoremediation potential of Peltophorum dubium to heavy metal lead (Pb) to potential use of this plant as phytoremediation in contaminated areas.