Effects of long-term cadmium exposure on growth and metabolomic profile of tomato plants.
Summary of "Effects of long-term cadmium exposure on growth and metabolomic profile of tomato plants."
The response of tomato plants to long-term cadmium exposure was evaluated after a 90-days long culture in hydroponic conditions (0, 20, and 100μM CdCl(2)). Cadmium preferentially accumulated in roots, and to a lower extent in upper parts of plants. Absolute quantification of 28 metabolites was obtained through (1)H 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 100μM Cd treated leaves. Carotenoid and chlorophyll contents decreased only in 100μM 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 20μM Cd. On the contrary, 100μM Cd treatment results in drastic physiological and metabolic perturbations leading to plant growth limitation and fruit set abortion.
UR Biologie et Physiologie Cellulaires Végétales, Département de Biologie, Faculté des Sciences de Tunis, El Manar, 1060 Tunis, Tunisia; UMR 619 Biologie du Fruit, Centre INRA de Bordeaux, Université de Bordeaux IBVM, BP 81, Villenave d'Ornon, F-3314
This article was published in the following journal.
Name: Ecotoxicology and environmental safety
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/20846723
- DOI: http://dx.doi.org/10.1016/j.ecoenv.2010.08.014
Hydrogen sulfide (H2S) exhibits both physiological and toxicological roles in the biological systems. Acute exposure to high levels of H2S is life threatening while long-term exposure to ambient level...
Cadmium (Cd) is a common environmental pollutant, and urinary Cd (UCd) is generally used as a marker of exposure; however, our understanding on the related urinary metabolic changes caused by Cd expos...
Macrosomia and low birth weight (LBW) can be associated with pregnancy complications and may affect the long term health of the child. The aim of this study was to evaluate the metabolomic serum profi...
Although the global use of the endocrine disrupting chemical DDT has decreased, its persistence in the environment has resulted in continued human exposure. Accumulating evidence suggests that DDT exp...
The present study aimed to elucidate the structural changes in testis and epididymis of adult rats following subchronic peroral administration of cadmium at 30 mg/L, diazinon at 40 mg/L, cadmium a...
As new drugs and vaccines are developed to prevent HIV disease progression and prolong survival of HIV infected patients, the short-term safety and effectiveness of these treatments are ev...
The primary objective is to characterize the safety profile of long-term exposure to SCB01A when administered to cancer subjects with advanced solid tumors. Furthermore, the efficacy profi...
Long term study of the effects of dosing with rhIGF-1 on growth
Varicose veins in the scrotum (varicocele) are responsible for >20% of male infertility in the US. Varicocele are associated with decreased sperm number and markedly reduced sperm fertiliz...
The purpose of this study is to evaluate the safety profile of orally administered tapentadol ER dosages of 100 to 250 mg twice daily in patients with chronic, painful diabetic peripheral ...
Medical and Biotech [MESH] Definitions
A plasticizer used in most plastics and found in water, air, soil, plants and animals. It may have some adverse effects with long-term exposure.
Experiments designed to determine the potential toxic effects of a long-term exposure to a chemical or chemicals.
Poisoning occurring after exposure to cadmium compounds or fumes. It may cause gastrointestinal syndromes, anemia, or pneumonitis.
Unstable isotopes of cadmium that decay or disintegrate emitting radiation. Cd atoms with atomic weights 103-105, 107, 109, 115, and 117-119 are radioactive cadmium isotopes.
Standards for limiting worker exposure to airborne contaminants. They are the maximum concentration in air at which it is believed that a particular substance will not produce adverse health effects with repeated daily exposure. It can be a time-weighted average (TLV-TWA), a short-term value (TLV-STEL), or an instantaneous value (TLV-Ceiling). They are expressed either as parts per million (ppm) or milligram per cubic meter (mg/m3).