title: Selenium as a sulphydrylic group inductor in plants.
abstract: We investigated the effect of selenium form and dose on the total glutathione and non-protein -SH group contents in the edible spinach (Spinacia oleracea L.) and ground tomato (Lycopersicon esculentum Mill.) plants. Our experiments were carried out in a hydroponic culture. Selenium was added to the culture medium in its selenite (Na2SeO3 x 5H2O) and selenate (Na2SeO4) forms. Regardless of the selenium form, we observed an increase in the non-protein thiol content. The non-protein -SH group content depended on the form and dose of selenium as well as on the organ and plant species. Regardless of the selenium form, a higher content of non-protein -SH groups were found in the spinach biomass than in the tomato biomass. Selenite contributed to a larger accumulation of non-protein -SH groups in the roots, whereas selenate contributed to their accumulation in the shoots
authors.affiliation: Agricultural University, Department of Plant Physiology, Akademicka 15, 20-950 Lublin, Poland.
authors.forename: Barbara
authors.initials: B
authors.lastname: Hawrylak
authors.forename: Maria
authors.initials: M
authors.lastname: Szymańska
mesh_terms: D004305:Dose-Response Relationship, Drug; D005978:Glutathione / Q000737:chemistry / Q000378:metabolism*; D018551:Solanum lycopersicum / Q000187:drug effects* / Q000378:metabolism; D064586:Selenic Acid; D018036:Selenium Compounds / Q000494:pharmacology*; D018038:Sodium Selenite / Q000494:pharmacology*; D018724:Spinacia oleracea / Q000187:drug effects* / Q000378:metabolism; D013438:Sulfhydryl Compounds / Q000737:chemistry
chemical_list: D018036:Selenium Compounds; D013438:Sulfhydryl Compounds; D005978:Glutathione; D018038:Sodium Selenite; D064586:Selenic Acid