2005
DOI: 10.1590/s0100-06832005000400015
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Inferências sobre atividade rizosférica de espécies com potencial para fitorremediação do herbicida tebuthiuron

Abstract: RESUMOA ação da microbiota rizosférica, acelerando a degradação de compostos no solo, é conhecida como fitoestimulação e constitui-se em um dos principais mecanismos de fitorremediação de herbicidas no solo. Plantas tolerantes ao tebuthiuron, que sejam capazes de estimular sua microbiota rizosférica, podem ser de grande interesse na fitorremediação desse herbicida. O objetivo deste trabalho foi avaliar a atividade rizosférica de quatro espécies vegetais com potencial para fitorremediação de tebuthiuron e infer… Show more

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Cited by 30 publications
(29 citation statements)
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“…Cultivated soils support higher microbial biomass by means of the root exudates, which influence the growth of bacteria and fungi that colonize the rhizosphere with environmental changes in the surrounding soil serving as a substrate for selective growth of microorganisms (Cardoso and Nogueira 2007). Greater activity and microbial biomass in the rhizosphere soils treated with herbicides, in relation to nonvegetated soils, were also found in other studies (Pires et al 2005;Santos et al 2007;Santos et al 2010), and this effect is attributed to phytostimulation of the associated microbiota.…”
Section: Resultssupporting
confidence: 74%
See 1 more Smart Citation
“…Cultivated soils support higher microbial biomass by means of the root exudates, which influence the growth of bacteria and fungi that colonize the rhizosphere with environmental changes in the surrounding soil serving as a substrate for selective growth of microorganisms (Cardoso and Nogueira 2007). Greater activity and microbial biomass in the rhizosphere soils treated with herbicides, in relation to nonvegetated soils, were also found in other studies (Pires et al 2005;Santos et al 2007;Santos et al 2010), and this effect is attributed to phytostimulation of the associated microbiota.…”
Section: Resultssupporting
confidence: 74%
“…Such evidence reinforces that C. ensiformis is effective in stimulating microbiota and very promising for the remediation of soils contaminated with sulfentrazone. Pires et al (2005), evaluating the rhizospheric activity of species with potential for phytoremediation of the herbicide tebuthiuron, found that the microbial community associated with roots of C. ensiformis was the largest and the most active among the treatments studied.…”
Section: Resultsmentioning
confidence: 99%
“…Neste ensaio, a utilização do solo com o cultivo de leguminosa foi suficiente para promover diminuição no qCO 2 , ou seja, tornar esse ambiente menos instável do ponto de vista sustentável (Tabela 3). Acredita-se, também, que a capacidade já comprovada de S. aterrimum na remediação do trifloxysulfuronsodium (Procópio et al, 2004;Santos et al, 2006) possa ser resultante das interações direta e indireta com a microbiota atuante na região afetada pelas raízes.…”
Section: Resultsunclassified
“…O principal mecanismo atuante na fitorremediação de agrotóxicos orgânicos não-clorados e herbicidas é a fitoestimulação ou rizodegradação (Pires et al, 2005). Esse mecanismo fitorremediador promove elevadas taxas de remediação, obtidas com utilização de plantas que, comprovadamente, aumentam a degradação microbiana de compostos orgânicos danosos ao solo (Anderson et al, 1993) e com diferenças significativas observadas, quando são comparados solos vegetados e não-vegetados (Silici ano & Germ ida, 1999;Arthur et al, 2000).…”
Section: Introductionunclassified
“…Such behavior may be related to the greater dependence of microorganisms by the plant or to the great capacity of this species to stimulate the associated microbiota in herbicide-contaminated soils (Pires et al, 2005).…”
Section: Discussionmentioning
confidence: 99%