Transgenic plants for phytoremediation of herbicides

Kawahigashi, Hiroyuki

doi:10.1016/j.copbio.2009.01.010

Cited by 148 publications

(76 citation statements)

References 49 publications

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“…It is worth mentioning that, throughout time, the plants developed sophisticated strategies to support the adverse effect of herbicides and reduce their phytotoxicity through the multiple detoxification system (Kawahigashi, 2009). Several studies have shown that ROS (such as H 2 O 2 ) can serve as indicating molecules involved in the response of plants to biotic and abiotic stresses (Mittler, 2002;Gill & Tuteja, 2010), and they can activate enzymes of the antioxidant system (Jiang & Yang, 2009).…”

Section: Resultsmentioning

confidence: 99%

Biochemical and Physiological Changes in Rice Plants Due to the Application of Herbicides1

et al. 2016

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-The application of herbicides, even if selective, can cause biochemical and physiological changes, resulting in oxidative stress. This stress comes from the accumulation of reactive oxygen species produced due to exposure to the herbicide. However, plants have developed defense strategies, which can be enzymatic or non-enzymatic. The objective of this study was to evaluate the morphological and metabolic changes such as photosynthetic parameters, oxidative damage and antioxidant enzyme activity of rice plants after applying herbicides. For this, a study was conducted in a greenhouse and laboratory and the treatments consisted of application of imazapic + imazapyr, quinclorac, bentazon, cyhalofop-butyl, penoxsulan, bispyribac-sodium and carfentrazone-ethyl, in addition to control without herbicide. The phytotoxicity in plants was strong and there was a reduction in photosynthesis, stomatal conductance and efficiency of water use in plants treated with carfentrazone-ethyl. Furthermore, the application of carfentrazone-ethyl resulted in lower chlorophylls and carotenoids and increased lipid peroxidation and proline accumulation. Changes in the activity of enzymes belonging to the antioxidant system were inspected by applying herbicides. The application of herbicide alters the physiology of rice plants, triggering responses to oxidative stress, which are more pronounced when used carfentrazone-ethyl. Keywords:Oryza sativa, oxidative stress, lipid peroxidation, selectivity. RESUMO -

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Section: Resultsmentioning

confidence: 99%

Biochemical and Physiological Changes in Rice Plants Due to the Application of Herbicides1

et al. 2016

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“…Therefore, biomass of hyperaccumulator plants can be changed by introduction of genes affecting phytohormone synthesis resulting in enhanced biomass (Eapen & D'Souza, 2005;Kotrba et al, 2009). Transgenic plants expressing bacterial ACC deaminase genes can decrease ethylene level which is a major problem that reduces phytoremediation efficiency in plants exposed to abiotic stresses (Kawahigashi, 2009). Genetically engineered plants can offer new characteristics that may not be met in normal plants (Table 1).…”

Section: Transgenic Plantsmentioning

confidence: 99%

“…Genes involved in plant genetic engineering for phytoremediation of heavy metals (Hsieh et al, 2009;Karenlampi et al, 2000;Kotrba et al, 2009;Kolodyazhnaya et al, 2009). many types of toxic chemicals (Kawahigashi, 2009). Special bacterial genes which encode enzymes involved in the breakdown of explosives, such as cytochrome P450 and nitroreductase have been also used in manipulating higher plants to enhance plant tolerance, uptake, and detoxification of contaminated environments (Van Aken, 2009).…”

Section: Transgenic Plantsmentioning

confidence: 99%

Enhancing Phytoremediation Efficiency in Response to Environmental Pollution Stress

Soleimani¹,

Akbar²,

Hajabbasi³

2011

Plants and Environment

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“…Nesse contexto, a fitorremediação de áreas poluídas é interessante, do ponto de vista ambiental, devido à utilização de plantas específicas, visando amenizar ou até mesmo despoluir locais contaminados (Coutinho & Barbosa, 2007). Algumas plantas são capazes de remover poluentes orgânicos e inorgânicos, retirando-os do ambiente e convertendo-os em metabólitos menos tóxicos que se acumulam nos tecidos delas, sendo um processo mais barato e menos destrutivo que a remediação química ou física, embora mais demorado (Kawahigashi, 2009).…”

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“…Diversos estudos, com resultados promissores, vêm sendo desenvolvidos visando avaliar a eficácia de plantas na remoção de herbicidas do solo (Coleman et al, 2002;Kawahigashi, 2009;Procópio et al, 2009).…”

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Ação de Eleusine coracana na remediação de solos contaminados com picloram

Silva¹,

Silva

Queiroz

et al. 2012

Planta daninha

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RESUMO -A evolução do método químico de controle das plantas daninhas tem sido fundamental para o cultivo de grandes áreas com custos de produção compatíveis com os mercados nacional e internacional. Atualmente, os herbicidas representam cerca de 45,0% de todos os agrotóxicos consumidos no Brasil. Esses compostos, em sua grande maioria, podem apresentar longa persistência no ambiente e contaminar o solo, impedindo novos cultivos, e também as águas superficiais e subterrâneas, gerando como consequência problemas ambientais. Objetivou-se com este trabalho quantificar, por meio da técnica cromatográfica, a capacidade da espécie E. coracana em reduzir a persistência do picloram em dois tipos de solo -um Latossolo Vermelho-Amarelo e um Argissolo Vermelho-Amarelolargamente cultivados com pastagens e culturas no Brasil, contaminados com esse herbicida. Conclui-se que a espécie E. coracana é eficiente na remediação de solos contaminados por esse herbicida, evidenciando o potencial de uso dela em programas de fitorremediação de áreas contaminadas e redução do risco de impacto ambiental, e que os valores da meia-vida do picloram nos solos avaliados são distintos para uma mesma condição climática, o que pode ser ainda mais diferente em campo.Palavras-chave: meia-vida, herbicida, descontaminação do solo, cromatografia a líquido.ABSTRACT -The evolution of chemical weed control methods has been fundamental to cultivation of large areas where production costs are compatible with national and international markets. Currently, herbicides account for approximately 45.0% of all pesticides used in Brazil. Most of these compounds present long persistence in the environment, contaminating soil, hindering new crops as well as surface water and groundwater, thus leading to environmental problems. The objective of this work was to quantify, using the chromatographic technique, the efficacy of the species E. coracana in reducing picloram persistence in two soils, a Red Yellow Ultisol and a Red Yellow Latosol, treated with this herbicide, and widely cultivated for pastures and crops in Brazil. It was concluded that the species E. coracana is effective in the remediation of soils contaminated by this herbicide, indicating its potential use in programs of phytoremediation of contaminated areas to reduce the risk of environmental impact. Picloram half-life values of the soils evaluated differed for the same weather conditions, probably differing even more under field conditions.

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Transgenic plants for phytoremediation of herbicides

Cited by 148 publications

References 49 publications

Biochemical and Physiological Changes in Rice Plants Due to the Application of Herbicides1

Biochemical and Physiological Changes in Rice Plants Due to the Application of Herbicides1

Enhancing Phytoremediation Efficiency in Response to Environmental Pollution Stress

Ação de Eleusine coracana na remediação de solos contaminados com picloram

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