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Soil irrigation with water and toxic cyanobacterial microcystins accelerates tomato development

Abstract : Microcystins are cyclic heptapeptides hepatotoxins produced by aquatic cyanobacteria such as Microcystis aeruginosa. The wide occurrence of toxic microcystins in freshwater is a threat to water quality and health of living organisms. Here, we irrigated an agricultural soil daily with a cyanobacterial extract diluted at environmental concentrations of microcystin–leucine–arginine, from 0.005 to 0.1 mg equivalent MC-LR L−1, for 90 days. We analyzed the impact on the growth and physiology of tomato, Solanum lycopersicum cultivar MicroTom. Our results show a stimulation of the tomato plant development, in terms of inflorescence and blooming, after exposure to the lowest concentration, of 0.005 mg eq. MC-LR L−1, during the 40 first days post-germination. That effect was not apparently associated with physiological disturbances of the tomato plants.
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https://hal.archives-ouvertes.fr/hal-01628853
Déposant : Archive Ouverte Prodinra <>
Soumis le : samedi 4 novembre 2017 - 20:25:24
Dernière modification le : jeudi 28 mai 2020 - 14:57:09

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Sylvain Corbel, Noureddine Bouaïcha, Sylvie Nelieu, Christian Mougin. Soil irrigation with water and toxic cyanobacterial microcystins accelerates tomato development. Environmental Chemistry Letters, Springer Verlag, 2015, 13 (4), pp.447-452. ⟨10.1007/s10311-015-0518-2⟩. ⟨hal-01628853⟩

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