Polyamines affect the cellular growth and structure of pro-embryogenic masses in Araucaria angustifolia embryogenic cultures through the modulation of proton pump activities and endogenous levels of polyamines - Dutra, Nathalia Torres; Silveira, Vanildo; Azevedo, Inga Gonçalves de; Gomes-Neto, Lupis Ribeiro; Façanha, Arnoldo Rocha; Steiner, Neusa; Guerra, Miguel Pedro; Floh, Eny Iochevet Segal; Santa Catarina, Claudete (Physiologia Plantarum, 2012)