The relationship between aluminium and silicon accumulation in leaves of <i>Faramea marginata</i> (Rubiaceae)

Britez, Ricardo Miranda de; Watanabe, Toshihiro; Jansen, Steven; Reissmann, Carlos Bruno; Osaki, Mitsuru

doi:10.1046/j.1469-8137.2002.00531.x

Cited by 72 publications

(57 citation statements)

References 48 publications

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“…by the formation of the Al-Si complexes in leaf tissue, which are non-toxic forms, contributing to Al detoxification (Britez et al 2002). Similar results were reported by Wang et al (2004), demonstrating that Si is efficient in the Al detoxification of Zea mays plants subjected to Al toxicity + Si.…”

Section: Etermining Photosynthetic Pig Mentssupporting

confidence: 81%

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Silicon mitigates oxidative stress and has positive effects in Eucalyptus platyphylla under aluminium toxicity

Lima¹,

Júnior²,

Barbosa³

et al. 2016

PLANT SOIL ENVIRON

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Positive interactions to silicon (Si) were reported in Solanum nigrum plants (Liu et al. 2013) exposed to toxic cadmium (Cd) levels, while Kidd et al. (2001) also described that Si mitigates the toxicity by aluminium (Al) in Zea mays. In addition, the protective action of Si was observed in Oryza sativa under high levels of zinc (Zn) (Song et al. 2014), Hordeum vulgare under high concentrations of chromium (Cr) and Cucumis sativus exposed to manganese (Mn) toxicity (Shi et al. 2005).The tolerance to metal toxicity can be induced by the compartmentalization, chelation and/or immobilization of metal ions into the vacuole, cytoplasm, apoplast or/and cell wall. In addition, Britez et al. (2002) described that Si decreased Al toxicity due to the formation of Al-Si complexes in the apoplast, which are non-toxic forms. Based on this overview, our hypothesis is that Si must reduce the negative impacts on metabolism provoked by the action of Al in Eucalyptus platyphylla plants. The aim of this research is to determine the Si contribution on nutrient concentrations, compounds linked to oxidative stress, photosynthetic pigments and gas exchange, and determine if Si can improve the tolerance mechanism of young E. platyphylla plants exposed to Al toxicity. MATERIAL AND METHODS Plants ABSTRACTThe tolerance to metal toxicity, such as aluminium, can be induced by the formation of Al-Si complexes. Therefore, the aim of this research is to determine the contribution of Si on nutrient concentrations, compounds linked to oxidative stress, photosynthetic pigments and gas exchange and to determine if Si can improve the tolerance mechanism of young Eucalyptus platyphylla plants exposed to Al toxicity. The experimental setup was completely randomized with four treatments (0, 1.6 mmol/L Al, 2.0 mmol/L Si and 1.6 mmol/L Al + 2.0 mmol/L Si; being described as the control, Al toxicity, Si and Al toxicity + Si, respectively). The treatment with Si attenuated the negative effects of Al on nutrient concentrations by reducing superoxide, hydrogen peroxide, malondialdehyde and electrolyte leakage. Pigments and gas exchange exhibited beneficial effects after Si application, with positive interactions also being detected between Si-Al. Therefore, this study demonstrates that Si reduced the oxidative stress and improved the tolerance mechanism of young E. platyphylla plants exposed to Al toxicity.

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Section: Etermining Photosynthetic Pig Mentssupporting

confidence: 81%

“…In addition, Britez et al (2002) described that Si decreased Al toxicity due to the formation of Al-Si complexes in the apoplast, which are non-toxic forms. Based on this overview, our hypothesis is that Si must reduce the negative impacts on metabolism provoked by the action of Al in Eucalyptus platyphylla plants.…”

mentioning

confidence: 99%

Silicon mitigates oxidative stress and has positive effects in Eucalyptus platyphylla under aluminium toxicity

Lima¹,

Júnior²,

Barbosa³

et al. 2016

PLANT SOIL ENVIRON

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“…Segundo Geoghegan & Sprent (1996), os teores de Al encontrados nas folhas do guanandi, em ambos os sítios, indicam que essa espécie é não acumuladora de Al (valores <600 mgkg -1 ). Possivelmente, o guanandi apresenta mecanismos de tolerância ao Al, a exemplo de outras espécies (Britez et al 2002). Processos como redução do transporte através da membrana, exclusão, formação de peptídios ricos em grupos tiólicos (fitoquelatinas e metalotioneínas), quelação por ácidos orgânicos e aminoácidos e compartimentalização do metal em estruturas subcelulares permitem a tolerância aos metais pesados pelas plantas (Santos et al 2006).…”

Section: Os Teores De Al Nas Folhas Dos Indivíduos Do Riounclassified

“…Letras diferentes, em linha, representam diferenças significativas, teste de Duncan, α = 5%. (Britez et al 2002). Os baixos valores médios de Al nos solos do Rio Velho e da Floresta do Palmito (tabela 1) indicaram a ocorrência da translocação do elemento para as folhas senescentes.…”

Section: Os Teores De Al Nas Folhas Dos Indivíduos Do Riounclassified

Teores foliares e esclerofilia de Calophyllum brasiliense Cambess. (Clusiaceae) e suas relações edáficas no litoral do Estado do Paraná, Brasil

Sereda

Reissmann

Boeger

et al. 2016

Hoehnea

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-(Foliar content and esclerophylly of Calophyllum brasiliense Cambess. (Clusiaceae) and their edaphic relationships in coast of Paraná State, Brazil). This study evaluated the relationship between soil nutrient content and foliar nutrient content of Calophyllum brasiliense in two sites from the coast of Paraná State, with different fertility conditions. The soils were analysed for chemical attributes and leaves for nutrients, Al, Na and specific leaf area as sclerophylly index. Leaves showed differences only for K, Ca, Cu contents and specific leaf area. The K and Ca contents were higher in the leaves of trees from Rio Velho, while the Cu content and specific leaf area were higher in the leaves of trees from Floresta do Palmito. Al and Na contents in leaves indicated that this species is tolerant to these elements. The specific leaf area indicated that the leaves are sclerophyllous in response to stress conditions due to low nitrogen content in both sites, besides the high Al content and low soil fertility in Floresta do Palmito and high soil salinity in Rio Velho. Keywords: guanandi, leaf nutrition, lowland tropical forest, soil fertility RESUMO -(Teores foliares e esclerofilia de Calophyllum brasiliense Cambess. (Clusiaceae) e suas relações edáficas no litoral do Estado do Paraná, Brasil). Este estudo avaliou a relação entre teores de nutrientes do solo e foliares de Calophyllum brasiliense (guanandi), em dois sítios do litoral paranaense, em distintas condições de fertilidade. Os atributos químicos do solo e foliares, Al, Na e área específica foliar, como índice de esclerofilia, foram analisados. As folhas diferiram para os teores de K, Ca e Cu e área específica foliar. Os teores de K e Ca foram maiores nas folhas das plantas do Rio Velho, enquanto que os teores de Cu e a área específica foliar foram maiores nas folhas das plantas da Floresta do Palmito. Os teores de Al e Na indicaram que a espécie é tolerante a esses elementos. A área foliar específica indicou que as folhas são esclerófilas como resposta à condição de estresse devido ao baixo teor de N em ambos os sítios, além do alto teor de Al e a baixa fertilidade do solo na Floresta do Palmito e à alta salinidade do solo no Rio Velho. Palavra-chave: guanandi, fertilidade do solo, floresta ombrófila densa de terras baixas, nutrição foliar

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“…The role of silicon is reported to reduce the effects of salt stress, drought stress, metal toxicity, nutrient imbalance and radiation damage [4,8,9,13,44,49,50]. Silicon reportedly increases crop quality and yield, protects the plants against fungal infection, insects, pest attack and increases disease resistance [5,17,26,27,38].…”

Section: Introductionmentioning

confidence: 99%

Laser-Induced Breakdown Spectroscopy and Phytolith Analysis: An Approach to Study the Deposition and Distribution Pattern of Silicon in Different Parts of Wheat (Triticum aestivum L.) Plant

et al. 2012

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The distribution/deposition pattern of silicon and minerals in different parts of wheat (Triticum aestivum) plants was determined using laser-induced breakdown spectroscopy (LIBS) and phytolith analysis. The LIBS spectra of different parts of wheat plants gave spectral signature of Ca, Mg, Si, Fe, Na, K, C, H, O and N. Phytolith analysis showed that the leaves of wheat plants are the highest silicon accumulator followed by the awn, leaf sheath, lemma, rachilla and stem. The results of LIBS analysis and the phytolith analysis were in close agreement. The multivariate statistical analysis, principal component analysis (PCA), was applied to the data set of the LIBS spectra of the different parts of the wheat plants. PCA on LIBS data matrix gives PC1 (99 %) and PC2 (1 %) which explains the 100 % variance in the data set. The PCA plots discriminate the vegetative and fertile parts of the wheat plant. Furthermore, the appearance of silicon in each part of the wheat plants also demonstrates its significance in biocement production.

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The relationship between aluminium and silicon accumulation in leaves of Faramea marginata (Rubiaceae)

Cited by 72 publications

References 48 publications

Silicon mitigates oxidative stress and has positive effects in Eucalyptus platyphylla under aluminium toxicity

Silicon mitigates oxidative stress and has positive effects in Eucalyptus platyphylla under aluminium toxicity

Teores foliares e esclerofilia de Calophyllum brasiliense Cambess. (Clusiaceae) e suas relações edáficas no litoral do Estado do Paraná, Brasil

Laser-Induced Breakdown Spectroscopy and Phytolith Analysis: An Approach to Study the Deposition and Distribution Pattern of Silicon in Different Parts of Wheat (Triticum aestivum L.) Plant

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