Allelopathic effect of Cylindrospermopsis raciborskii extracts on the germination and growth of several plant species

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

Patricia Silva (Autor) Outra; Vitor Vasconcelos (Autor) FCUP

Revista

Título: Chemistry and Ecology

Vol. 26

Páginas: 263-271

ISSN: 0275-7540

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 12 Citações

Scopus - 12 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Ciências biológicas

Outras Informações

ID Authenticus: P-003-ACF

DOI: 10.1080/02757540.2010.495060

Abstract (EN): Cylindrospermopsis raciborskii is an invasive cyanobacterium and a potential producer of the alkaloid toxin cylindrospermopsin (CYN). Extracts of two strains of C. raciborskii were tested for their effects on the germination and growth of Lactuca sativa, Phaseolus vulgaris, Pisum sativum and Solanum lycopersicum. Germination was not significantly inhibited for any of the plant species tested, but growth was affected, depending on the species. Root and stem growth in L. sativa was generally stimulated by both strains. Ph. vulgaris root growth was stimulated by both strains but no effect was visible in stem growth. S. lycopersicum root growth was inhibited by both strains and stem growth was inhibited only by the CYN strain. P. sativum root growth was also inhibited by both strains but stem growth was stimulated. CYN accumulation was also differential with toxin transfer to the stem. Ph. vulgaris accumulated the highest CYN concentration. This study suggests that plants behave differently in their response to this toxin and that roots and stems also show different abilities to react and accumulate the toxin. Knowledge of the impact of CYN- and non-CYN-producing cyanobacteria in different plant species and translocation of the toxin to different plant parts is essential for the avoidance of human as well as environmental health hazards.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9