title: Lycopersicon esculentum submitted to Cd-stressful conditions in nutrition solution: Nutrient contents and translocation.
abstract: The increasing number of cases on soil contamination by heavy metals has affected crop yields, besides representing an imminent risk to food. Some of these contaminants, such as cadmium, are very similar to micronutrients and thus more easily absorbed by the plants. This study assessed the effect of increasing amounts of cadmium on the content and translocation of micro and macronutrients in tomato. Tomatoes were grown in Clark's nutrient solution and subjected to increasing levels of Cd: 0, 0.025, 0.1, 0.5 and 1.0mg L(-1). The plants contaminated by cadmium had a maximum reduction in the aerial part compared to the control of: 2.25g kg(-1), 2.80g kg(-1), 18.93mg kg(-1) and 14.15mg kg(-1) for K, Ca, Mn and Zn, respectively. In other parts of the tomato were reduced from 2.3g kg(-1) K in fruits and 280.5mg kg(-1) of Mn in the roots. In addition to changes in the levels of some nutrients, the restricted Cd translocation in 1.15 percent P and 2.8 percent Cu to shoots compared to control, but did not affect the translocation of K, Ca, Mg and Zn.
authors.affiliation: Department of Chemistry and Federal University of Lavras, PO Box 3037, CEP 37200 000, Lavras, MG, Brazil. bertolialexandre@yahoo.com.br
authors.forename: Alexandre
authors.initials: A
authors.lastname: Carvalho Bertoli
authors.forename: Marcele
authors.initials: M
authors.lastname: Gabriel Cannata
authors.forename: Ruy
authors.initials: R
authors.lastname: Carvalho
authors.forename: Ana Rosa
authors.initials: AR
authors.lastname: Ribeiro Bastos
authors.forename: Matheus
authors.initials: M
authors.lastname: Puggina Freitas
authors.forename: Amanda
authors.initials: A
authors.lastname: dos Santos Augusto
mesh_terms: D002104:Cadmium / Q000633:toxicity*; D005638:Fruit / Q000737:chemistry; D018551:Solanum lycopersicum / Q000187:drug effects*; D018977:Micronutrients / Q000032:analysis* / Q000378:metabolism*; D018517:Plant Roots / Q000187:drug effects / Q000378:metabolism; D012996:Solutions; D014874:Water Pollutants, Chemical / Q000633:toxicity*
chemical_list: D018977:Micronutrients; D012996:Solutions; D014874:Water Pollutants, Chemical; D002104:Cadmium