Zn uptake, physiological response and stress attenuation in mycorrhizal jack bean growing in soil with increasing Zn concentrations

Andrade, Sara Adrián López de; Gratão, Priscila Lupino; Schiavinato, Marlene Aparecida; Silveira, Adriana Parada Dias da; Azevedo, Ricardo Antunes; Mazzafera, Paulo

doi:10.1016/j.chemosphere.2009.02.008

Cited by 104 publications

(49 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Growth of maize was not inhibited by addition of 250 mg/kg Zn, which suggests that moderate supplementation with Zn does not cause damage to plants. Similar results were also reported by others (Andrade et al 2009). …”

Section: Resultssupporting

confidence: 82%

“…A decrease in CAT activity in plants grown under excess Zn stress was observed in present study. A similar decline in CAT activity was reported in other plants grown under excess Zn (Andrade et al 2009). The decrease in CAT activity observed in plant supplemented with excess Zn might be due to inhibition of enzyme synthesis or a change in the assembly of enzyme subunits (Radić et al 2010).…”

Section: Resultssupporting

confidence: 55%

See 1 more Smart Citation

Oxidative stress and change in plant metabolism of maize (Zea mays L.) growing in contaminated soil with elemental sulfur and toxic effect of zinc

Cui¹,

Zhao²

2011

Plant Soil Environ.

View full text Add to dashboard Cite

Responses of the chlorophyll, antioxidant enzymes and lipid peroxidation in maize growing in soil with zinc (Zn) and elemental sulfur (S) were studied. The results showed that sulfur alleviated the high toxicity of Zn and increased the concentration of chlorophyll. The activities of superoxide dismutase (SOD) and peroxidase (POD) increased significantly and catalase (CAT) activity significantly decreased in plants treated with 1000 mg/kg Zn alone. Compared with the control, SOD and POD activity increased from 62.3 to 77.3 U/mg protein and 28 to 41 nmol/min/mg protein, respectively. However, CAT activity decreased from 1.96 to 1.48 µmol H 2 O 2 /min/mg protein. The concentration of malondialdehyde (MDA) in maize leaves significantly increased as the concentration of Zn increased. Moderate concentrations of S (32 and 160 mg/kg) alleviated the increase of both SOD and POD activity and the decrease of CAT activity that were observed under conditions of Zn stress. The greatest decrease of SOD and POD activity were 17% and 21% and both were observed in the treatment of 160 mg/kg S combined with 1000 mg/kg Zn. In this treatment, the greatest increase of CAT activity (11%) was also observed. The results suggest that moderate supplementation with S may ameliorate the toxicity caused by excess Zn and plays an important role in protecting plants from oxidative stress induced by excess Zn.

show abstract

Section: Resultssupporting

confidence: 82%

Section: Resultssupporting

confidence: 55%

Oxidative stress and change in plant metabolism of maize (Zea mays L.) growing in contaminated soil with elemental sulfur and toxic effect of zinc

Cui¹,

Zhao²

2011

Plant Soil Environ.

View full text Add to dashboard Cite

show abstract

“…The choice of the method employed and its application should take into account the type of contaminant, the type of environment and the amount of the contaminant that is available to the plant; another important aspect is the interaction between the plant and the soil microorganisms, such as bacteria and mycorrhizae. The benefits of these interactions have already been demonstrated (Andrade et al, 2009;Andrade et al, 2010;Khan and Doty, 2011;Luo et al, 2011). The impact of heavy metal exposure on nodule formation and nitrogen fixation in leguminous plants is another important issue that requires more study, with little information available (Matsuda et al, 2002;Obbard and Jones, 2001;Reichman, 2007).…”

Section: Phytoremediationmentioning

confidence: 99%

Use of non-hyperaccumulator plant species for the phytoextraction of heavy metals using chelating agents

Souza

Piotto²,

Nogueirol³

et al. 2013

Sci. agric. (Piracicaba, Braz.)

104

View full text Add to dashboard Cite

Soil contamination by heavy metals is a challenge faced by many countries, and engineering technologies to solve this problem are expensive and can cause negative impacts on the environment. One way to minimise the levels of heavy metals in the soil is to use plants that can absorb and accumulate heavy metals into harvestable parts, a process called phytoextraction. Typical plant species used in research involving phytoextraction are heavy metal hyperaccumulators, but plants from this group are not good biomass producers and grow more slowly than most species; thus, they have an important role in helping scientists understand the mechanisms involved in accumulating high amounts of heavy metals without developing symptoms or dying. However, because of their slow growth, it is not practical to use these species for phytoextraction. An alternative approach is to use non-hyperaccumulator plants assisted by chelating agents, which may improve the ability of plants to accumulate more heavy metals than they would naturally. Chelating agents can be synthetic or organic acids, and the advantages and disadvantages of their use in improving the phytoextraction potential of non-hyperaccumulator plants are discussed in this article. We hope to draw attention to ways to improve the phytoextraction potential of non-hyperaccumulator plants that produce a large amount of biomass and to stimulate more research on phytoextraction-inducing substances.

show abstract

“…Embora esteja bem documentado que a micorrização melhora o estado nutricional das plantas hospedeiras (Rashid et al, 2008;Andrade et al, 2009), esse resultado benéfico depende das espécies do fungo e da planta envolvida na associação. Os resultados obtidos no presente trabalho corroboram os de Jankong & Visoottiviseth (2008), que, utilizando três espécies de Glomus, observaram que a produção de matéria seca de plantas micorrizadas de Tagetes erecta cultivadas em solo contaminado com As não diferiu da matéria seca produzida por plantas não micorrizadas.…”

Section: Medidas De Crescimentounclassified

“…A fitoestabilização baseia-se na imobilização do contaminante nas raízes e no solo, reduzindo dessa forma a sua disponibilidade para outros organismos e prevenindo a erosão do solo e a lixiviação do contaminante para áreas ainda não contaminadas (Santos et al, 2007). No contexto da fitoestabilização, a associação das plantas com fungos micorrízicos arbusculares (FMAs) é de grande importância, pois, além de conferir melhor absorção de P e auxiliar no crescimento vegetal (Rabie, 2005), também pode contribuir na redução da disponibilidade de MPs por meio da sua imobilização em estruturas simbióticas intra e extrarradiculares (Andrade et al, 2009 …”

Section: Introductionunclassified

Tolerância e potencial fitorremediador de Stizolobium aterrimum associada ao fungo micorrízico arbuscular Glomus etunicatum em solo contaminado por chumbo

Souza¹,

Andrade²,

Souza³

et al. 2011

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

(4) RESUMO A poluição do solo com metais pesados tem aumentado significativamente nos últimos anos, devido à ação antrópica. Diversas técnicas podem ser utilizadas para reverter ou minimizar a condição de contaminação do solo, porém muitas delas são prejudiciais ao solo. Uma alternativa é a utilização da fitorremediação, já que as plantas possuem a capacidade de absorver elementos do solo e, dessa maneira, promover sua descontaminação com teores excessivos de metais e outros elementos potencialmente tóxicos. A associação de plantas com fungos micorrízicos arbusculares (FMAs) pode influenciar a absorção desses elementos. Com o objetivo de avaliar o potencial fitorremediador de plantas de Stizolobium aterrimum associadas ou não a FMAs em solos com concentrações crescentes de Pb, realizouse um experimento sob condições de casa de vegetação, em esquema fatorial 4 x 2. Os tratamentos consistiram na adição de quatro doses de Pb (0, 250, 500 e 1.000 mg dm -3 ) e da inoculação ou não de FMA. Os resultados mostraram que a planta foi tolerante ao Pb nas doses utilizadas. A associação com FMA não influenciou a absorção de Pb pela planta. No entanto, a micorrização influenciou a fixação biológica de N 2 , observando-se maior atividade da enzima nitrogenase em plantas micorrizadas. Apesar dos bons resultados obtidos com relação à tolerância dessa planta ao Pb, mais estudos precisam ser realizados acerca da absorção desse elemento, principalmente em solo multicontaminado, que é a realidade encontrada em sistemas poluídos.Termos de indexação: metais pesados, associação simbiótica, fitoestabilização.

show abstract

Zn uptake, physiological response and stress attenuation in mycorrhizal jack bean growing in soil with increasing Zn concentrations

Cited by 104 publications

References 43 publications

Oxidative stress and change in plant metabolism of maize (Zea mays L.) growing in contaminated soil with elemental sulfur and toxic effect of zinc

Oxidative stress and change in plant metabolism of maize (Zea mays L.) growing in contaminated soil with elemental sulfur and toxic effect of zinc

Use of non-hyperaccumulator plant species for the phytoextraction of heavy metals using chelating agents

Tolerância e potencial fitorremediador de Stizolobium aterrimum associada ao fungo micorrízico arbuscular Glomus etunicatum em solo contaminado por chumbo

Contact Info

Product

Resources

About