Selenium reduces cadmium accumulation and alleviates cadmium-induced quality degradation in tobacco

W.X. Liu, X. Feng, S. Shang, G. Zhang and F.B. Wu
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W.X. Liu: Department of Agronomy, College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, Hangzhou, P.R. China
X. Feng: Department of Agronomy, College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, Hangzhou, P.R. China
S. Shang: Guizhou Tobacco Science Institute, Guiyang, P.R. China
G. Zhang: Department of Agronomy, College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, Hangzhou, P.R. China
F.B. Wu: Department of Agronomy, College of Agriculture and Biotechnology, Zijingang Campus, Zhejiang University, Hangzhou, P.R. China

Plant, Soil and Environment, 2015, vol. 61, issue 10, 444-450

Abstract: A greenhouse pot experiment was conducted using two contrasting tobacco cultivars Guiyan1 (Cd-sensitive) and Yunyan2 (Cd-tolerant) to evaluate the effect of external selenium (Se) on Cd-induced degradation of tobacco quality. Results showed that 3 mg/kg Cd reduced K, Mg, Mn, and Zn contents, but increased Cd, P, Ca, Fe contents in both cultivars. Addition of Se in Cd solution (Cd + Se) dramatically alleviated Cd-deteriorate effects on tobacco quality, markedly reduced Cd concentration, but increased Se and K contents in tobacco leaves compared with Cd alone treatment. Exogenous Se counteracted Cd-induced alterations in carbohydrate, e.g. it significantly depressed Cd-induced increase in total/reducing sugar, and sucrose contents, but elevated the reduced starch content. Furthermore, Se significantly depressed the elevated ratios in reducing sugar/total nitrogen, total sugar/total protein and reducing sugar/nicotine, but elevated total nitrogen/nicotine, which returned near to their control levels.

Keywords: toxic pollutant; metal; micronutrient; cigarette ash; Nicotiana tabacum L (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:61:y:2015:i:10:id:397-2015-pse

DOI: 10.17221/397/2015-PSE

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