Localization of selenium deposits in meristematic cells of Allium sativum L. roots treated with selenium salts.
Ultrastructural analysis of garlic roots treated for 24 h with sodium selenate or sodium selenite at the concentrations 80, 160, 320 microM revealed the presence of selenium deposits in meristematic cells. They appeared as small and large granules or aggregates of electron-dense material. Many small granules were localised in plastids but some in mitochondria, endoplasmic reticulum as well as in Golgi apparatus, nucleus and cytoplasm. Sometimes the large granules were seen in cytoplasm but aggregates of electron-dense material only in vacuoles. It seems possible that these deposits represent a non-dissolved form of selenium, i.e. elemental selenium or its complexes with other ions.
Glińska
S
S
Department of Plant Cytology and Cytochemistry, University of Lódź, Poland.
Gabara
B
B
D000042:Absorption; D000490:Allium / Q000737:chemistry* / Q000378:metabolism / Q000648:ultrastructure; D002467:Cell Nucleus / Q000737:chemistry; D003593:Cytoplasm / Q000737:chemistry; D003594:Cytoplasmic Granules / Q000737:chemistry; D004721:Endoplasmic Reticulum / Q000737:chemistry; D006056:Golgi Apparatus / Q000737:chemistry; D008854:Microscopy, Electron; D008928:Mitochondria / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry* / Q000648:ultrastructure; D064586:Selenic Acid; D012643:Selenium / Q000032:analysis* / Q000494:pharmacology*; D018036:Selenium Compounds / Q000378:metabolism / Q000494:pharmacology; D018038:Sodium Selenite / Q000378:metabolism / Q000494:pharmacology
D018036:Selenium Compounds; D012643:Selenium; D018038:Sodium Selenite; D064586:Selenic Acid