dc.creatorDIAS, Leonardo Lucas Carnevalli
dc.creatorRIBEIRO, Dimas Mendes
dc.creatorCATARINA, Claudete Santa
dc.creatorBARROS, Raimundo Santos
dc.creatorFLOH, Eny Iochevet Segal
dc.creatorOTONI, Wagner Campos
dc.date.accessioned2012-10-20T03:00:51Z
dc.date.accessioned2018-07-04T15:31:03Z
dc.date.available2012-10-20T03:00:51Z
dc.date.available2018-07-04T15:31:03Z
dc.date.created2012-10-20T03:00:51Z
dc.date.issued2010
dc.identifierPLANT GROWTH REGULATION, v.62, n.1, p.9-19, 2010
dc.identifier0167-6903
dc.identifierhttp://producao.usp.br/handle/BDPI/27262
dc.identifier10.1007/s10725-010-9478-5
dc.identifierhttp://dx.doi.org/10.1007/s10725-010-9478-5
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1623911
dc.description.abstractEthylene is a plant hormone that is of fundamental importance to in vitro morphogenesis, but in many species, it has not been thoroughly studied. Its relationship with polyamines has been studied mainly because the two classes of hormones share a common biosynthetic precursor, S-adenosylmethionine (SAM). In order to clarify whether competition between polyamines and ethylene influences in vitro morphogenetic responses of Passiflora cincinnata Mast., a climacteric species, different compounds were used that act on ethylene biosynthesis and action, or as ethylene scavengers. Treatment with the ethylene inhibitor, aminoethoxyvinylglycine (AVG) caused a greater regeneration frequency in P. cincinnata, whereas treatment with the ethylene precursor, 1-aminocyclopropane-1-carboxylic-acid (ACC) lessened regeneration frequencies. The data suggested that levels of polyamines and ethylene are not correlated with morphogenic responses in P. cincinnata. It was ascertained that neither the absolute ethylene and polyamine levels, nor competition between the compounds, correlated to the obtained morphogenic responses. However, sensitivity to, and signaling by, ethylene appears to play an important role in differentiation. This study reinforces previous reports regarding the requirement of critical concentrations and temporal regulation of ethylene levels for morphogenic responses. Temporal regulation also appeared to be a key factor in competition between the two biosynthetic pathways, without having any effects on morphogenesis. Further studies investigating the silencing or overexpression of genes related to ethylene perception, under the influence of polyamines in cell differentiation are extremely important for the complete understanding of this process.
dc.languageeng
dc.publisherSPRINGER
dc.relationPlant Growth Regulation
dc.rightsCopyright SPRINGER
dc.rightsrestrictedAccess
dc.subjectACC
dc.subjectAVG
dc.subjectPassionfruit
dc.subjectOrganogenesis
dc.subjectScavengers
dc.titleEthylene and polyamine interactions in morphogenesis of Passiflora cincinnata: effects of ethylene biosynthesis and action modulators, as well as ethylene scavengers
dc.typeArtículos de revistas


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