title: Overexpression of the anaphase-promoting complex (APC) genes in Nicotiana tabacum promotes increasing biomass accumulation.
abstract: The anaphase-promoting complex (APC) plays pivotal roles in cell cycle pathways related to plant development. In this study, we present evidence that overproduction of APC10 from Arabidopsis thaliana in tobacco (Nicotiana tabacum) plants promotes significant increases in biomass. Analyzes of plant's fresh and dried weight, root length, number of days to flower and number of seeds of plants overexpressing AtAPC10 verified an improved agronomic performance of the transgenic plants. Detailed analyzes of the leaf growth at the cellular level, and measurements of leaf cell number, showed that AtAPC10 also produce more cells, showing an enhancement of proliferation in these plants. In addition, crossing of plants overexpressing AtAPC10 and AtCDC27a resulted in a synergistic accumulation of biomass and these transgenic plants exhibited superior characteristics compared to the parental lines. The results of the present study suggest that transgenic plants expressing AtAPC10 and AtAPC10/AtCDC27a concomitantly are promising leads to develop plants with higher biomass.
authors.affiliation: Laboratório de Biologia Molecular de Plantas, Instituto de Bioquímica Médica, CCS, Cidade Universitária - Ilha do Fundão, CEP 21941-902, Rio de Janeiro, RJ, Brazil, mflima@ufrrj.br.
authors.forename: Marcelo
authors.initials: M
authors.lastname: de Freitas Lima
authors.forename: Núbia Barbosa
authors.initials: NB
authors.lastname: Eloy
authors.forename: Mariana Carnavale
authors.initials: MC
authors.lastname: Bottino
authors.forename: Adriana S
authors.initials: AS
authors.lastname: Hemerly
authors.forename: Paulo C G
authors.initials: PC
authors.lastname: Ferreira
mesh_terms: D017360:Arabidopsis / Q000166:cytology / Q000235:genetics* / Q000254:growth & development; D029681:Arabidopsis Proteins / Q000235:genetics* / Q000378:metabolism; D018533:Biomass; D002452:Cell Count; D018797:Cell Cycle Proteins / Q000235:genetics* / Q000378:metabolism; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D010641:Phenotype; D063245:Plant Development; D018515:Plant Leaves / Q000378:metabolism; D030821:Plants, Genetically Modified; D021122:Protein Subunits / Q000235:genetics / Q000378:metabolism; D014026:Nicotiana / Q000235:genetics*
chemical_list: D029681:Arabidopsis Proteins; C543806:CDC27a protein, Arabidopsis; D018797:Cell Cycle Proteins; D021122:Protein Subunits; C586858:anaphase-promoting complex subunit 10 protein, Arabidopsis