Metabolic And Structural Changes During Early Maturation Of Inga Vera Seeds Are Consistent With The Lack Of A Desiccation Phase.

dc.creatorCaccere, Rodrigo
dc.creatorTeixeira, Simone P
dc.creatorCenteno, Danilo C
dc.creatorFigueiredo-Ribeiro, Rita de Cássia L
dc.creatorBraga, Márcia R
dc.date2013-Jun
dc.date2015-11-27T13:31:19Z
dc.date2015-11-27T13:31:19Z
dc.date.accessioned2018-03-29T01:17:10Z
dc.date.available2018-03-29T01:17:10Z
dc.identifierJournal Of Plant Physiology. v. 170, n. 9, p. 791-800, 2013-Jun.
dc.identifier1618-1328
dc.identifier10.1016/j.jplph.2013.01.002
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/23384756
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/200473
dc.identifier23384756
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1300706
dc.descriptionInga vera, native to South America, is an important leguminous species used for ecological restoration of riparian forests and its seeds are among the most recalcitrant ones described up to date. In this work, we analysed the metabolic profile, cell ultrastructure as well as cell wall polysaccharides of I. vera seeds in order to better understand its maturation, which allows embryo germination without a quiescent phase. Increased amounts of citric, glutamic, pyroglutamic, and aspartic acids from stages I to II (120 and 129 days after flowering (DAF)) corroborate the hypothesis of high metabolism, shifting from fermentative to aerobic respiration at seed maturity. This phase was characterized by an extensive vacuolization of embryonic cells, which also indicate high metabolic activity. The proportion of arabinose in the cell walls of embryonic axis (approx. 20%) was lower than those found in some orthodox seeds (nearly 40%), suggesting that arabinose-containing polysaccharides, which are thought to provide more flexibility to the cell wall during natural drying, are less abundant in I. vera seeds. Taken together, our results provide evidence that the major changes occurred during early stages of seed maturation of I. vera, indicating that the rapid temporary metabolic shift observed between stages I and II may be related to the lack of desiccation phase, moving directly to germination.
dc.description170
dc.description791-800
dc.languageeng
dc.relationJournal Of Plant Physiology
dc.relationJ. Plant Physiol.
dc.rightsfechado
dc.rightsCopyright © 2013 Elsevier GmbH. All rights reserved.
dc.sourcePubMed
dc.subjectCarbohydrate Metabolism
dc.subjectCell Wall
dc.subjectCotyledon
dc.subjectDesiccation
dc.subjectFabaceae
dc.subjectGermination
dc.subjectMetabolome
dc.subjectSeeds
dc.subjectStarch
dc.subjectWater
dc.titleMetabolic And Structural Changes During Early Maturation Of Inga Vera Seeds Are Consistent With The Lack Of A Desiccation Phase.
dc.typeArtículos de revistas


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