[D-Leu1]MC-LR and MC-LR: A Small–Large Difference: Significantly Different Effects on Phaseolus vulgaris L. (Fabaceae) Growth and Phototropic Response after Single Contact during Imbibition with Each of These Microcystin Variants

[D-Leu1]MC-LR and MC-LR, two microcystins differing in one amino acid, constitute a sanitary and environmental problem owing to their frequent and concomitant presence in water bodies of the Americas and their association with human intoxication during recreational exposure to cyanobacterial bloom....

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Detalles Bibliográficos
Autores principales: Malaissi, Luciano, Vaccarini, Cristian Adrián, Hernández, Marcelo Paulo, Ruscitti, Marcela Fabiana, Arango, María Cecilia, Busquets, Federico, Arambarri, Ana María, Giannuzzi, Leda, Andrinolo, Darío, Sedan, Daniela Yazmine
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Botánica
[D-Leu1]microcystin-LR
Microcystin-LR
Imbibition stage
Phototropism
Phosphatase inhibition
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/118978
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-118978
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Botánica
[D-Leu1]microcystin-LR
Microcystin-LR
Imbibition stage
Phototropism
Phosphatase inhibition
spellingShingle Botánica
[D-Leu1]microcystin-LR
Microcystin-LR
Imbibition stage
Phototropism
Phosphatase inhibition
Malaissi, Luciano
Vaccarini, Cristian Adrián
Hernández, Marcelo Paulo
Ruscitti, Marcela Fabiana
Arango, María Cecilia
Busquets, Federico
Arambarri, Ana María
Giannuzzi, Leda
Andrinolo, Darío
Sedan, Daniela Yazmine
[D-Leu1]MC-LR and MC-LR: A Small–Large Difference: Significantly Different Effects on Phaseolus vulgaris L. (Fabaceae) Growth and Phototropic Response after Single Contact during Imbibition with Each of These Microcystin Variants
topic_facet Botánica
[D-Leu1]microcystin-LR
Microcystin-LR
Imbibition stage
Phototropism
Phosphatase inhibition
description [D-Leu1]MC-LR and MC-LR, two microcystins differing in one amino acid, constitute a sanitary and environmental problem owing to their frequent and concomitant presence in water bodies of the Americas and their association with human intoxication during recreational exposure to cyanobacterial bloom. Present in reservoirs used for irrigation as well, they can generate problems in the development of crops such as Phaseolus vulgaris, of nutritional and economic interest to the region. Although numerous works address the toxic effects of MC-LR, information on the toxicity of [D-Leu1]MC-LR is limited. Our objective was to study the toxic effects of [D-Leu1]MC-LR and MC-LR (3.5 µg/ml) on P. vulgaris after a single contact at the imbibition stage. Our findings indicate that 10 days post treatment, [D-Leu1]MC-LR generates morphological and physiological alterations more pronounced than those caused by MC-LR. In addition to the alterations produced by [D-Leu1]MC-LR in the development of seedlings and the structure of the leaves, roots and stems, we also found alterations in leaf stomatal density and conductivity, a longer delay in the phototropic response and a decrease in the maximum curvature angles achieved with respect to that observed for MC-LR. Our findings indicate that these alterations are linked to the greater inhibition of phosphatase activity generated by [D-Leu1]MC-LR, rather than to oxidative damage. We observed that 30 days after treatment with MC-LR, plants presented better development and recovery than those treated with [D-Leu1]MC-LR. Further studies are required on [D-Leu1]MC-LR and MC-LR toxicity and their underlying mechanisms of action.
format Articulo
Articulo
author Malaissi, Luciano
Vaccarini, Cristian Adrián
Hernández, Marcelo Paulo
Ruscitti, Marcela Fabiana
Arango, María Cecilia
Busquets, Federico
Arambarri, Ana María
Giannuzzi, Leda
Andrinolo, Darío
Sedan, Daniela Yazmine
author_facet Malaissi, Luciano
Vaccarini, Cristian Adrián
Hernández, Marcelo Paulo
Ruscitti, Marcela Fabiana
Arango, María Cecilia
Busquets, Federico
Arambarri, Ana María
Giannuzzi, Leda
Andrinolo, Darío
Sedan, Daniela Yazmine
author_sort Malaissi, Luciano
title [D-Leu1]MC-LR and MC-LR: A Small–Large Difference: Significantly Different Effects on Phaseolus vulgaris L. (Fabaceae) Growth and Phototropic Response after Single Contact during Imbibition with Each of These Microcystin Variants
title_short [D-Leu1]MC-LR and MC-LR: A Small–Large Difference: Significantly Different Effects on Phaseolus vulgaris L. (Fabaceae) Growth and Phototropic Response after Single Contact during Imbibition with Each of These Microcystin Variants
title_full [D-Leu1]MC-LR and MC-LR: A Small–Large Difference: Significantly Different Effects on Phaseolus vulgaris L. (Fabaceae) Growth and Phototropic Response after Single Contact during Imbibition with Each of These Microcystin Variants
title_fullStr [D-Leu1]MC-LR and MC-LR: A Small–Large Difference: Significantly Different Effects on Phaseolus vulgaris L. (Fabaceae) Growth and Phototropic Response after Single Contact during Imbibition with Each of These Microcystin Variants
title_full_unstemmed [D-Leu1]MC-LR and MC-LR: A Small–Large Difference: Significantly Different Effects on Phaseolus vulgaris L. (Fabaceae) Growth and Phototropic Response after Single Contact during Imbibition with Each of These Microcystin Variants
title_sort [d-leu1]mc-lr and mc-lr: a small–large difference: significantly different effects on phaseolus vulgaris l. (fabaceae) growth and phototropic response after single contact during imbibition with each of these microcystin variants
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/118978
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