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Pb and Cd on growth, leaf ultrastructure and essential oil yield mint (Mentha arvensis L.)

Authors :
Caroline Nery Jezler
Pedro Antônio Oliveira Mangabeira
Alex-Alan Furtado de Almeida
Raildo Mota de Jesus
Rosilene Aparecida de Oliveira
Delmira da Costa Silva
Larissa Correa do Bomfim Costa
Source :
Ciência Rural, Vol 45, Iss 3, Pp 392-398 (2015)
Publication Year :
2015
Publisher :
Universidade Federal de Santa Maria, 2015.

Abstract

Contamination of medicinal plants with heavy metals as Pb and Cd can affect the growth and the essential oil production of the plants and represent a risk to those who consume as medicine. This study aimed to evaluate the effects of absorption and localization of Pb and Cd on growth, ultrastructural aspects of leaves and essential oil yield and composition of Mentha arvensis, applied on the soil with increasing concentrations (8, 16, 32, 64 and 128mg kg-1). There was a differential absorption of Pb and Cd by M. arvensis mainly concentrated in the roots. Pb was found in small amounts in the leaves while Cd largely exceeded the safety limit without symptoms of toxicity. The ultrastructural analysis revealed the metal accumulation on vesicles surrounding the mitochondria and the presence of electron dense deposits surrounding the mitochondria, nucleus and chloroplasts. Little changes caused by Pb and Cd application were not enough to affect the growth and essential oil yield and composition of M. arvensis

Details

Language :
English, Portuguese
ISSN :
16784596 and 01038478
Volume :
45
Issue :
3
Database :
Directory of Open Access Journals
Journal :
Ciência Rural
Publication Type :
Academic Journal
Accession number :
edsdoj.93cea961bf154de097a38227e78999e8
Document Type :
article
Full Text :
https://doi.org/10.1590/0103-8478cr20130966