Growth and bioaccumulation characteristics of watercress (Nasturtium officinale R. BR.) exposed to cadmium, cobalt and chromium

被引：26

作者：

Duman, Fatih ^{[1
]}

Leblebici, Zeliha ^{[1
]}

Aksoy, Ahmet ^{[1
]}

机构：

[1] Erciyes Univ, Fac Arts & Sci, Dept Biol, TR-38039 Kayseri, Turkey

来源：

CHEMICAL SPECIATION AND BIOAVAILABILITY | 2009年 / 21卷 / 04期

关键词：

cadmium; cobalt; chromium; growth; bioaccumulation; Nasturtium officinale; relative growth rates; bioconcentration factor; NITRATE REDUCTASE-ACTIVITY; HEAVY-METALS; LIPID-PEROXIDATION; AQUEOUS-SOLUTIONS; OXIDATIVE STRESS; PROTEIN-CONTENT; ACCUMULATION; REMOVAL; PLANT; LEAD;

D O I：

10.3184/095422909X12578511366924

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The aim of this study is to determine the effects of Cd, Co and Cr on the growth of watercress (Nasturtium officinale) and to determine the bioaccumulation properties of these heavy metals by the plant. N. officinale individuals were exposed to different concentrations of Cd, Co and Cr for 72 h. Relative growth rates (RGR) and bioconcentration factor (BCF) ratios were calculated for each metal concentration. RGR values of plants exposed to Co slightly increased in lower concentrations, but then decreased again. In contrast, RGR values of plants exposed to Cd and Cr decreased linearly. Significant positive relationships were observed among the concentrations of Cd, Co and Cr in N. officinale and in the culture solution. BCF ratios were highest for plants exposed to Co, and lowest for plants exposed to Cr. The most efficient uptake of Cd, Co and Cr occurred at the external solution concentrations at 0.5, 0.5 and 10 mM, respectively.

引用

页码：257 / 265

页数：9

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