Analysis of the Use of Cylindrospermopsin and/or Microcystin-Contaminated Water in the Growth, Mineral Content, and Contamination of Spinacia oleracea and Lactuca sativa

• Tipo: Artigo em Revista Científica Internacional
• Data: 2019

Autores

Llana Ruiz Cabello, M (Autor) Outra; Jos, A (Autor) Outra; Camean, A (Autor) Outra; Oliveira, F (Autor) Outra; Barreiro, A (Autor) Outra; Machado, J (Autor) Outra; Azevedo, J (Autor) Outra; Pinto, E (Autor) Outra; Agostinho Almeida (Autor) FFUP; Alexandre Campos (Autor) FCUP; Vitor Vasconcelos (Autor) FCUP; Freitas, M (Autor) Outra

Revista

Título: Toxins

Vol. 11

Página Final: 624

ISSN: 2072-6651

Editora: MDPI

Indexação

ISI Web of Knowledge - 19 Citações

Scopus - 22 Citações

Outras Informações

ID Authenticus: P-00R-7CV

DOI: 10.3390/toxins11110624

Abstract (EN): Cyanobacteria and cyanotoxins constitute a serious environmental and human health problem. Moreover, concerns are raised with the use of contaminated water in agriculture and vegetable production as this can lead to food contamination and human exposure to toxins as well as impairment in crop development and productivity. The objective of this work was to assess the susceptibility of two green vegetables, spinach and lettuce, to the cyanotoxins microcystin (MC) and cylindrospermopsin (CYN), individually and in mixture. The study consisted of growing both vegetables in hydroponics, under controlled conditions, for 21 days in nutrient medium doped with MC or CYN at 10 mu g/L and 50 mu g/L, or CYN/MC mixture at 5 + 5 mu g/L and 25 + 25 mu g/L. Extracts from M. aeruginosa and C. ovalisporum were used as sources of toxins. The study revealed growth inhibition of the aerial part (Leaves) in both species when treated with 50 mu g/L of MC, CYN and CYN/MC mixture. MC showed to be more harmful to plant growth than CYN. Moreover spinach leaves growth was inhibited by both 5 + 5 and 25 + 25 mu g/L CYN/MC mixtures, whereas lettuce leaves growth was inhibited only by 25 + 25 mu g/L CYN/MC mixture. Overall, growth data evidence increased sensitivity of spinach to cyanotoxins in comparison to lettuce. On the other hand, plants exposed to CYN/MC mixture showed differential accumulation of CYN and MC. In addition, CYN, but not MC, was translocated from the roots to the leaves. CYN and MC affected the levels of minerals particularly in plant roots. The elements most affected were Ca, K and Mg. However, in leaves K was the mineral that was affected by exposure to cyanotoxins.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 21