Phytotoxic catechin leached by seeds of the tropical weed Sesbania virgata

dc.creatorSimoes, K
dc.creatorDu, J
dc.creatorKretzschmar, FS
dc.creatorBroeckling, CD
dc.creatorStermitz, FS
dc.creatorVivanco, JM
dc.creatorBraga, MR
dc.date2008
dc.dateMAY
dc.date2014-11-18T12:45:21Z
dc.date2015-11-26T17:50:20Z
dc.date2014-11-18T12:45:21Z
dc.date2015-11-26T17:50:20Z
dc.date.accessioned2018-03-29T00:33:32Z
dc.date.available2018-03-29T00:33:32Z
dc.identifierJournal Of Chemical Ecology. Springer, v. 34, n. 5, n. 681, n. 687, 2008.
dc.identifier0098-0331
dc.identifierWOS:000255681000013
dc.identifier10.1007/s10886-008-9443-1
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/59829
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/59829
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/59829
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1289650
dc.descriptionSesbania virgata (Cav.) Pers (wand riverhemp) is a fast-growing tropical legume species that has been used for revegetation of riparian forests and rehabilitation of degraded areas and that exhibits an invasive behavior in certain regions of Brazil. Preliminary studies have shown that seed leachates inhibit the germination and development of seedlings of some crop species. In this study, we report that the seed leachates of S. virgata inhibit the growth of Arabidopsis thaliana and rice. The flavonoid (+)-catechin is found in high amounts in these leachates. It was active at concentrations of 50 mu g ml(-1), and its effect was not distinguishable from the (+)-catechin obtained from a commercial source. We found that (+)-catechin is located in the seed coat and is rapidly released in high concentrations (235 mu g per seed) at the beginning of imbibition. Quercetin was also detected in the seed coat of S. virgata, but it was not released from the seeds. Other phytotoxic compounds in the seed leachates were also detected. The fact that S. virgata releases high amounts of (+)-catechin, which also has antimicrobial activity, and other phytotoxins from its seeds at the earliest stages of its development might represent some adaptative advantage to the seedling that contributes to its invasive behavior and successful establishment in different soils.
dc.description34
dc.description5
dc.description681
dc.description687
dc.languageen
dc.publisherSpringer
dc.publisherDordrecht
dc.publisherHolanda
dc.relationJournal Of Chemical Ecology
dc.relationJ. Chem. Ecol.
dc.rightsfechado
dc.rightshttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dc.sourceWeb of Science
dc.subjectSesbania virgata
dc.subjectseed leachate
dc.subject(+)-catechin
dc.subjectallelopathy
dc.subjectallelochemicals
dc.subjectquercetin
dc.subjectSpotted Knapweed Invasion
dc.subjectCentaurea-maculosa
dc.subjectAllelochemical (+/-)-catechin
dc.subjectGrowth
dc.subjectPlant
dc.subjectGermination
dc.subjectExudation
dc.subjectSuccess
dc.subjectSoils
dc.titlePhytotoxic catechin leached by seeds of the tropical weed Sesbania virgata
dc.typeArtículos de revistas


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