Effects of long-term cadmium exposure on growth and metabolomic profile of tomato plants - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Ecotoxicology and Environmental Safety Year : 2010

Effects of long-term cadmium exposure on growth and metabolomic profile of tomato plants

W. Chaibi
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  • IdHAL : w-chaibi

Abstract

The response of tomato plants to long-term cadmium exposure was evaluated after a 90-days long culture in hydroponic conditions (0, 20, and 100 μM CdCl2). Cadmium preferentially accumulated in roots, and to a lower extent in upper parts of plants. Absolute quantification of 28 metabolites was obtained through 1H NMR, HPLC-PDA, and colorimetric methods. The principal component analysis showed a clear separation between control and Cd treated samples. Proline and total ascorbate amounts were reduced in Cd-treated leaves, whereas α-tocopherol, asparagine, and tyrosine accumulation increased, principally in 100 μM Cd treated leaves. Carotenoid and chlorophyll contents decreased only in 100 μM Cd-mature-leaves, which correlate with a reduced expression of genes essential for isoprenoid and carotenoid accumulations. Our results show that tomato plants acclimatize during long-term exposure to 20 μM Cd. On the contrary, 100 μM Cd treatment results in drastic physiological and metabolic perturbations leading to plant growth limitation and fruit set abortion.

Dates and versions

hal-02668879 , version 1 (31-05-2020)

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Hédia Hédiji, Wahbi Djebali, Cécile Cabasson, Mickael M. Maucourt, Pierre Baldet, et al.. Effects of long-term cadmium exposure on growth and metabolomic profile of tomato plants. Ecotoxicology and Environmental Safety, 2010, 73 (8), pp.1965-1974. ⟨10.1016/j.ecoenv.2010.08.014⟩. ⟨hal-02668879⟩

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