title: Globular body production, their anatomy, DNase gel analysis and NDP kinase activity in root tips of Poncirus trifoliata L.
abstract: Green globular bodies were developed from Poncirus trifoliata L. root tip explants as a response to addition in the substrate of different growth regulators. From the globular bodies, shoots initiated and grew. Median section of the globular bodies reveals that they are composed of parenchyma cells and originate from the pericycle. The activity of DNases during shoot formation from globular bodies was influenced by the type and concentration of plant growth regulators that were added in the nutrient substrate. Peptide bands formation was also influenced by the increase of BA concentration. Consequently, BA, NAA and IAA combination influenced 5'-triphosphonucleosides (NTPs) appearance and activity in the presence of metal. Peptide bands resulted from the electrophoretic analysis of endogenous protein phosphorylation, proved to be catalytic subunits of NDP kinases, as they all phosphorylate diphosphonucleosides. The enzymes DNases and NDP kinases could be used as a scientific tool for the study of shoot formation from P. trifoliata L. green globular bodies.
authors: Department of Horticulture, Laboratory of Pomology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
authors: Thiresia-Teresa
authors: TT
authors: Tzatzani
authors: Kortessa
authors: K
authors: Dimassi-Theriou
authors: Traianos
authors: T
authors: Yupsanis
authors: Artemios
authors: A
authors: Bosabalidis
authors: Ioannis
authors: I
authors: Therios
authors: Virginia
authors: V
authors: Sarropoulou
mesh_terms: D003851:Deoxyribonucleases / Q000378:metabolism; D010940:Plant Proteins / Q000378:metabolism*; D018517:Plant Roots / Q000201:enzymology* / Q000378:metabolism*; D032104:Poncirus / Q000201:enzymology* / Q000378:metabolism*
chemical_list: D010940:Plant Proteins; D003851:Deoxyribonucleases
keywords: Anatomy; DNases; Green globular bodies; NDP kinases; Poncirus trifoliata L.; Root tip