Características fisiológicas do feijoeiro cultivado em solos após fitorremediação do picloram

Franco, Miguel Henrique Rosa; Lemos, Vinícius Teixeira; Aguiar, Luciana Monteiro; França, André Cabral; Ferreira, Evander Alves; Silva, Daniel Valadão

doi:10.7824/rbh.v14i4.454

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…However, this morphological trait increased with phytoremediation by the Urochloa sp. (Franco et al, 2015). Belo et al (2016) reported similar trend for the dry mass of P. glaucum after phytoremediation by C. juncea and C. ensiformis.…”

Section: Performance Of C Juncea As Bioindicator Of Phytoremediationmentioning

confidence: 54%

Green Manure Species for Phytoremediation of Soil With Tebuthiuron and Vinasse

Ferreira

Moreira

Montagnolli

et al. 2021

Front. Bioeng. Biotechnol.

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Tebuthiuron is often used to control weed growth in sugarcane cultures. This herbicide is highly toxic and can persist in soil for up to 2 years according to its degradation half-life. Hence, its residual effect is highly hazardous for the environment and local habitants via leaching, surface runoff. Screening out of species of green manure as potential phytoremediators for tebuthiuron in soil, with and with no vinasse, accordingly is the scientific point of this study. Green manure species selected for the trial in greenhouse were jack bean [Canavalia ensiformis (L.) DC.], pigeon pea [Cajanus cajan (L. Millsp.)], velvet bean [Mucuna pruriens (L.) DC.)], and millet [Pennisetum glaucum (L.) R.Br.], and Crotalaria juncea L. as bioindicator of this herbicide. The determination/quantification of height, stem diameter, and number of leaves in all plants were monitored, as well as other morphological traits for drafting any inference on biomass production. Moreover, ecotoxicity bioassays were performed from soil samples at the beginning and at the end of the experiment. Results showed preliminary evidence of effective phytoremediation capacity by M. pruriens and P. glaucum in soils with tebuthiuron, as the growth of C. juncea was sustained. Both Gompertz approach and principal component analysis predicted that these green manure species could grow healthier and for longer periods in soils containing tebuthiuron and vinasse and, thus, reduce physiological anomalies due to ecotoxicity. The implications of this study may aid in the implementation of cost-effective strategies targeting decontamination of tebuthiuron in sugarcane crops with vinasse application in fertigation.

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Section: Performance Of C Juncea As Bioindicator Of Phytoremediationmentioning

confidence: 54%

Green Manure Species for Phytoremediation of Soil With Tebuthiuron and Vinasse

Ferreira

Moreira

Montagnolli

et al. 2021

Front. Bioeng. Biotechnol.

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“…The excess of Cu can cause damage to the photosynthetic apparatus (Gonzá lez-mendoza et al, 2013), andchanges in photosynthesis may represent the physiological state of the plant (Kalaji et al, 2016) Environmental stresses can interfere with the efficiency of photosynthesis and inactivate PS II-photosystem II (P680) and the electron transport chain for the production of ATP and NADPH2 (Costa et al, 2003). Fluorescence analysis has advantages for studies of electron transport during photosynthesis and it is possible to record electron transport in photosystem II (Franco, 2015). THE application of exogenous nitric oxide-NO can mitigate the decrease in photosynthetic capacity in plants, caused by a variety of abiotic stresses (Wang et al 2014 ), is able to diffuse through membranes (Lamattina & Garcí a Mata, 2016), is a molecule that acts as a signaler involved in the regulation of plant growth and development, in defense against pathogens and in responses to abiotic stress (Sanz et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Nitric Oxide as an Attenuator of Ecophysiological Changes in Corn (Zea mays L.) Plants Submitted to Copper Toxicity

Brito¹,

Teixeira²,

Sousa³

et al. 2021

JAS

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The aim of this work was to evaluate the attenuating effect of the nitric oxide donor (sodium nitroprusside-NPS) on the ecophysiological responses of corn plants (Zea mays L.) submitted to copper toxicity. The corn seeds of the K9606 VIP3 variety were soaked for 48 hours in Germitest with solution containing treatment with sodium nitroprusside Na2 [Fe (CN) 5 NO] 2H2O (0, 200 and 300µM), sodium ferrocyanide Na4Fe (CN) 6 ( 300, 100 and 0 µM) respectively and deionized water (control), sown in buckets with 15 kg of soil incubated for 50 days containing copper concentrations CuSO4.5H2O (0, 60 and 200 mg kg-1). The design consisted of randomized blocks with 12 treatments and 4 repetitions, making a total of 48 plants. in ecophysiological variables: height, leaf area and number of leaves, stem diameter increased by 32, 66% and 11.29% in the treatments with 60 mg kg-1 of copper and 200 mg kg-1 of copper, respectively. There was no effect of treatments on the chlorophyll content measured by the SPAD index and gas exchange. The chlorophyll a fluorescence variables indicate that the concentration of 200 mg kg-1 of copper caused damage to the structure of the PS II reaction center complexes and indicate a slightly protective effect of nitric oxide-NO present in sodium nitroprusside and cyanide present in sodium ferrocyanide, reflecting a smooth functioning of the maximum activity of photosystem II and the electron transport chain.

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Uso de bioindicadoras vegetais para identificação de resíduos de herbicidas no solo

Duque

Maciel

Santos

et al. 2020

RSD

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O presente trabalho foi elaborado a partir de levantamento bibliográfico. Foram consultados trabalhos científicos (artigos, teses e dissertações) publicados entre os anos de 1988 e 2020, que continham dados sobre a utilização da técnica de bioensaio. O bioensaio é utilizado para determinar a existência de resíduos de herbicidas no solo. Em sua realização são empregadas espécies sensíveis ao herbicida (bioindicadoras). Para ser considerada bioindicadora, a espécie vegetal deve ter sensibilidade ao herbicida estudado, apresentando intoxicação e redução em características físicas ou fisiológicas. Além disso, a sensibilidade deve aumentar segundo o aumento de resíduos no solo. Devido ao mecanismo de ação e sorção do herbicida, cada composto apresenta espécies bioindicadoras ideais. O presente estudo teve por objetivo verificar na literatura espécies bioindicadoras de herbicidas residuais, em função da textura do solo e variável analisada. Traz um enfoque generalista das espécies cuja sensibilidade aos herbicidas foi comprovada experimentalmente, permitindo a consulta da bioindicadora ideal para cada composto. Na literatura foi verificado que as espécies Cucumis sativus e Sorghum bicolor são as mais utilizadas como bioindicadoras e os herbicidas atrazine e sulfentrazone os mais relatados.

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Características fisiológicas do feijoeiro cultivado em solos após fitorremediação do picloram

Cited by 3 publications

References 20 publications

Green Manure Species for Phytoremediation of Soil With Tebuthiuron and Vinasse

Green Manure Species for Phytoremediation of Soil With Tebuthiuron and Vinasse

Nitric Oxide as an Attenuator of Ecophysiological Changes in Corn (Zea mays L.) Plants Submitted to Copper Toxicity

Uso de bioindicadoras vegetais para identificação de resíduos de herbicidas no solo

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