2017
DOI: 10.1007/s11738-017-2424-7
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Alleviation of cadmium toxicity by potassium supplementation involves various physiological and biochemical features in Nicotiana tabacum L.

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Cited by 22 publications
(8 citation statements)
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“…Zhao et al (2004) found that K 2 SO 4 fertilizer could decrease the carbonates fraction of Cd [F(Carb)] and the exchangeable fraction of Cd [F(EXC)] in wheat planting soil, resulting in the reduction of the Cd content in wheat. Wang et al (2017) indicated that KHCO 3 fertilizer could reduce the Cd content in tobacco and alleviate Cd toxicity during growth. Thus, it is evident that K plays an important role in the reduction of the bio-Cd content in the soil, thereby reducing its accumulation in plants.…”
Section: Introductionmentioning
confidence: 99%
“…Zhao et al (2004) found that K 2 SO 4 fertilizer could decrease the carbonates fraction of Cd [F(Carb)] and the exchangeable fraction of Cd [F(EXC)] in wheat planting soil, resulting in the reduction of the Cd content in wheat. Wang et al (2017) indicated that KHCO 3 fertilizer could reduce the Cd content in tobacco and alleviate Cd toxicity during growth. Thus, it is evident that K plays an important role in the reduction of the bio-Cd content in the soil, thereby reducing its accumulation in plants.…”
Section: Introductionmentioning
confidence: 99%
“…Given that Cd is a non-essential element, no specific transporter is responsible for Cd uptake and translocation by plants (Sasaki et al 2012). Plants absorb and distribute Cd via the pathway(s) responsible for the uptake and transport of essential ions, such as calcium, iron, and zinc (Clemens 2006, Sasaki et al 2012, Sharma et al 2016, Wang et al 2017a. Thus, Zn and Fe may affect Cd uptake or accumulation (Hart et al 2002, Sun et al 2005, Balen et al 2011, Cheng et al 2018, although the effects depend on the exogenous bioavailable Cd/Zn concentrations, species, tissues, developmental stages, and nutritional conditions.…”
Section: Introductionmentioning
confidence: 99%
“…Dentre os nutrientes necessários ao desenvolvimento vegetal, o K desempenha funções vitais no metabolismo e crescimento, otimizando a adaptação das plantas aos estresses ambientais ). Pesquisadores têm observado aumento na fotossíntese, condutância estomática, crescimento e biomassa em várias espécies vegetais suplementadas com K quando sob estresse por Cd Wang et al 2017a;. Sendo assim, o fornecimento de K pode amenizar o estresse causado por Cd, devido a possibilidade desse nutriente atuar na modulação de diversos processos fisiológicos e metabólicos que são prejudicados pela toxidez por Cd.…”
Section: Potássio E a Tolerância Ao Cádmiounclassified
“…O incremento no conteúdo de MDA reduz a taxa fotossintética por restringir a biossíntese de clorofila e impedir o transporte de elétrons na cadeia da fotossíntese (Latef 2013;). O suprimento de K em plantas expostas ao excesso de Cd pode proporcionar menor acúmulo de EROs, resultando em menor concentração de MDA (peroxidação lipídica), o que provoca menores danos oxidativos às membranas (Eker e Uysal 2013;Wang et al 2017a). A redução no conteúdo de MDA proporcionada pelo K pode ser devido ao aumento da atividade de compostos antioxidantes enzimáticos (SOD, CAT, APX, GR) e não enzimáticos (prolina, GSH, AsA) e à inibição da ativação da NADPH oxidase (enzima geradora de radicais livres de oxigênio) ).…”
Section: Potássio E a Tolerância Ao Cádmiounclassified
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