Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/120346
Author(s): Guzmán-Guillén R.
Campos A.
Machado J.
Freitas M.
Azevedo J.
Pinto E.
Almeida A.
Cameán A.M.
Vasconcelos V.
Title: Effects of Chrysosporum (Aphanizomenon) ovalisporum extracts containing cylindrospermopsin on growth, photosynthetic capacity, and mineral content of carrots (Daucus carota)
Publisher: Springer Verlag (Germany)
Issue Date: 2017
Abstract: Natural toxins produced by freshwater cyanobacteria, such as cylindrospermopsin, have been regarded as an emergent environmental threat. Despite the risks for food safety, the impact of these water contaminants in agriculture is not yet fully understood. Carrots (Daucus carota) are root vegetables, extensively consumed worldwide with great importance for human nourishment and economy. It is, therefore, important to evaluate the possible effects of using water contaminated with cyanotoxins on carrot cultivation. The aim of this work was to investigate cylindrospermopsin effects on D. carota grown in soil and irrigated for 30 days, with a Chrysosporum ovalisporum extract containing environmentally relevant concentrations of cylindrospermopsin (10 and 50 μg/L). The parameters evaluated were plant growth, photosynthetic capacity, and nutritional value (mineral content) in roots of carrots, as these are the edible parts of this plant crop. The results show that, exposure to cylindrospermopsin did not have a clear negative effect on growth or photosynthesis of D. carota, even leading to an increase of both parameters. However, alterations in mineral contents were detected after exposure to crude extracts of C. ovalisporum containing cylindrospermopsin. A general decline was observed for most minerals (Ca, Mg, Na, Fe, Mn, Zn, Mo, and P), although an increase was shown in the case of K and Cu, pointing to a possible interference of the cyanobacterial extract in mineral uptake. This study is the first to evaluate the effects of C. ovalisporum extracts on a root vegetable, however, more research is necessary to understand the effects of this toxin in environmentally relevant scenarios. © 2016, Springer Science+Business Media New York.
Subject: bacterial extract
calcium
Chrysosporum ovalisporum extract
copper
cylindrospermopsin
iron
magnesium
manganese
molybdenum
phosphorus
potassium
sodium
unclassified drug
zinc
bacterial toxin
cylindrospermopsin
mineral
soil pollutant
uracil
water pollutant
food safety
fungus
growth response
mineral
photosynthesis
root vegetable
toxin
Article
carrot
Chrysosporum ovalisporum
concentration response
controlled study
cyanobacterium
nonhuman
nutritional value
photosynthesis
photosynthetic capacity
plant growth
plant root
analogs and derivatives
Aphanizomenon
carrot
drug effects
metabolism
photosynthesis
physiology
soil pollutant
toxicity
water pollutant
Aphanizomenon
Cyanobacteria
Daucus carota
Aphanizomenon
Bacterial Toxins
Daucus carota
Minerals
Photosynthesis
Soil Pollutants
Uracil
Water Pollutants, Chemical
URI: https://hdl.handle.net/10216/120346
Source: Ecotoxicology, vol. 26(1), p. 22-31
Related Information: info:eu-repo/grantAgreement/FCT/5876/147268/PT
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:CIIMAR - Artigo em Revista Científica Internacional

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