Phytotoxicity of sorgoleone found in grain sorghum root exudates

dc.creatorEinhellig, Frank A.
dc.creatorSouza, Itamar F.
dc.date2013-11-28T18:57:04Z
dc.date2013-11-28T18:57:04Z
dc.date1992
dc.date.accessioned2023-09-28T20:08:04Z
dc.date.available2023-09-28T20:08:04Z
dc.identifierEINHELLIG, F. A.; SOUZA, I. F. Phytotoxicity of sorgoleone found in grain sorghum root exudates. Journal of Chemical Ecology, [S.l.], v. 18, n. 1, p. 1-11, 1992.
dc.identifierhttp://www.springer.com/life+sciences/ecology/journal/10886
dc.identifierhttp://repositorio.ufla.br/jspui/handle/1/1453
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9045270
dc.descriptionRoot exudates of Sorghum bicolor consist primarily of a dihydroquinone that is quickly oxidized to a p-benzoquinone named sorgoleone. The aim of this investigation was to determine the potential activity of sorgoleone as an inhibitor of weed growth. Bioassays showed 125 tiM sorgoleone reduced radicle elongation of Eragrostis tef. In liquid culture, 50-#M sorgoleone treatments stunted the growth of Lemna minor. Over a 10-day treatment period, 10 tzM sorgoleone in the nutrient medium reduced the growth of all weed seedlings tested: Abutilon theophrasti, Datura stramonium, Amaranthus retroflexus, Setaria viridis, Digitaria sanguinalis, and Echinochloa crusgalli. These data show sorgoleone has biological activity at extremely low concentrations, suggesting a strong contribution to Sorghum allelopathy.
dc.languageen_US
dc.publisherInternational Society of Chemical Ecology
dc.rightsrestrito
dc.sourceJournal of Chemical Ecology
dc.subjectSorgoleone
dc.subjectPhytotoxin
dc.subjectAllelochemical
dc.subjectAllelopathy
dc.subjectRoot exudate
dc.subjectSorghum bicolor
dc.subjectSorghums
dc.subjectWeed inhibition
dc.titlePhytotoxicity of sorgoleone found in grain sorghum root exudates
dc.typeArtigo


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