Parameters Affecting The Early Seedling Development Of Four Neotropical Trees Under Oxygen Deprivation Stress.

dc.creatorKolb, Rosana Marta
dc.creatorRawyler, André
dc.creatorBraendle, Roland
dc.date2002-May
dc.date2015-11-27T12:49:08Z
dc.date2015-11-27T12:49:08Z
dc.date.accessioned2018-03-29T00:56:16Z
dc.date.available2018-03-29T00:56:16Z
dc.identifierAnnals Of Botany. v. 89, n. 5, p. 551-8, 2002-May.
dc.identifier0305-7364
dc.identifier
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/12099528
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/195080
dc.identifier12099528
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1295313
dc.descriptionSome of the parameters that determine flooding resistance-and consequently habitat zonation-were investigated in four neotropical trees (Schizolobium parahyba, Sebastiania commersoniana, Erythrina speciosa and Sesbania virgata). The constitutive parameters of seeds (size, nature and amount of reserves) only partly influenced resistance to flooding, mainly through a high carbohydrate : size ratio. Parameters describing metabolic efficiency under stress conditions were more important. Among them, fermentation capacity and levels of ATP and of total adenylates played a key role. The highest resistance to anoxia was associated with increased availability of free sugars, elevated alcohol dehydrogenase activity and corresponding mRNA levels, more efficient removal of ethanol and lactate, and higher adenylate levels. Finally, as a lethal consequence of energy shortage, free fatty acids were released on a massive scale in the flooding-sensitive species Schizolobium parahyba, whereas lipid hydrolysis did not occur in the most resistant species Sesbania virgata.
dc.description89
dc.description551-8
dc.languageeng
dc.relationAnnals Of Botany
dc.relationAnn. Bot.
dc.rightsfechado
dc.rights
dc.sourcePubMed
dc.subjectAdenosine Monophosphate
dc.subjectAdenosine Triphosphate
dc.subjectAlcohol Dehydrogenase
dc.subjectAnaerobiosis
dc.subjectCarbohydrate Metabolism
dc.subjectEnergy Metabolism
dc.subjectEthanol
dc.subjectEuphorbiaceae
dc.subjectFabaceae
dc.subjectFatty Acids
dc.subjectFermentation
dc.subjectGermination
dc.subjectLactic Acid
dc.subjectOxygen
dc.subjectRna, Messenger
dc.subjectSeeds
dc.subjectTime Factors
dc.subjectTrees
dc.subjectTropical Climate
dc.titleParameters Affecting The Early Seedling Development Of Four Neotropical Trees Under Oxygen Deprivation Stress.
dc.typeArtículos de revistas


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