Thiol peptides induction in the seagrass Thalassia testudinum (Banks ex Knig) in response to cadmium exposure. Academic Article

abstract

• Trace metal accumulation and thiol compounds synthesis as induced by cadmium exposure was studied in the seagrass Thalassia testudinum. Shoots were exposed for 24, 48, 96 and 144 h to several CdCl(2) concentrations (0, 30, 50 and 70 microM). Levels of cadmium, cysteine, glutathione (GSH), gamma-glutamylcysteine (gamma-EC), and phytochelatin-like peptides were determined in green blades, live sheaths and root/rhizomes tissues. Metal accumulation was dependent on Cd concentration and type of tissue, with green blades showing the highest content followed by live sheaths and root/rhizomes. All tissues experienced an increase in thiol-containing compounds as a response to cadmium exposure. Live sheaths showed the highest levels of cysteine, GSH and gamma-EC. This is the first report of induction of thiol peptides, presumably phytochelatins, by a trace metal in a sea grass species.

authors

• Gold Bouchot, Gerardo

published proceedings

• Aquat Toxicol

author list (cited authors)

• Alvarez-Legorreta, T., Mendoza-Cozatl, D., Moreno-Sanchez, R., & Gold-Bouchot, G.

citation count

• 20

complete list of authors

• Alvarez-Legorreta, Teresa||Mendoza-Cozatl, David||Moreno-Sanchez, Rafael||Gold-Bouchot, Gerardo

publication date

• January 2008

publisher

• Elsevier  Publisher

published in

• Aquatic Toxicology  Journal

keywords

• Cadmium Chloride
• Chromatography, High Pressure Liquid
• Dose-Response Relationship, Drug
• Hydrocharitaceae
• Plant Proteins
• Plant Structures
• Statistics, Nonparametric
• Sulfhydryl Compounds
• Time Factors
• Tissue Distribution
• Water Pollutants, Chemical

PubMed Central ID

• 18031838

Digital Object Identifier (DOI)

• 10.1016/j.aquatox.2007.09.001

start page

• 12

end page

• 19

volume

• 86

issue

• 1

URL

• http://dx.doi.org/10.1016/j.aquatox.2007.09.001