World Journal of
Pharmaceutical and Life Sciences

MICROCYSTIN BIOACCUMULATION IN CULTURES IRRIGATED WITH EUTROPHIZED WATERS IN BRAZILIAN SEMIARID

Janiele França Nery*, Gleydson Kleyton Moura Nery and Salomão De Sousa Medeiros

ABSTRACT

The present investigation was aimed to investigate the bioaccumulation of microcystin and cylindrospermopsin in Capsicum annuum (bell pepper) and Coriandrum sativum (coriander) irrigated with waters from a eutrophic reservoir and persistent cyanobacterial blooms. Samples of bell pepper and coriander were collected in ten areas distributed along Epitacio Pessoa reservoir. To bell pepper, samples (leaves and fruits) were collected in plants in three developmental stages (sprout, green fruit and ripe fruit). To coriander plants, leaves and stems are collected in different time of development, 30 days old and 60 days old. Cyanotoxins were determined by immunoassay ELISA kits. Phytoplankton samples were beneath the water surface next the irrigated areas. Cyanobacteria is dominant in phytoplankton community. Microcystin and cylindrospermopsin were detected in water reservoir. Only microcystin were detected in plants. For bell pepper, the highest concentrations of microcystin occurred in the leaves, however, no differences were observed between leaves, fruits and maturation time. Significant differences were observed between time of development to microcystin concentrations in leaves and steam of coriander. Microcystin can uptake by bell pepper and coriander cultures irrigated with contaminated water and the bioaccumulation varied as a function of exposure time and species dependent. This is a potential risk to consumers, since microcystin can biomagnified in the trophic chain.

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