Response of phytochelatins in two macrophytes exposed to environmentally relevant lower concentrations of cadmium

Wang Chao; Wang Li-ya; Sun Qin

您当前的位置：

首页 >

文章列表页 >

Response of phytochelatins in two macrophytes exposed to environmentally relevant lower concentrations of cadmium

更新时间：2023-11-28

- Response of phytochelatins in two macrophytes exposed to environmentally relevant lower concentrations of cadmium
- Advanced Engineering Sciences Vol. 40, Issue 6, Pages: 86-91(2008)
- 作者机构：
  
  河海大学
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2008，
  
  Published Online：25 May 2008，
扫描看全文
王超,王丽娅,孙琴.低浓度镉胁迫下2种水生植物体内植物络合素的响应[J].工程科学与技术,2008,40(6):86-91.

Wang Chao, Wang Li-ya, Sun Qin. Response of phytochelatins in two macrophytes exposed to environmentally relevant lower concentrations of cadmium. [J]. Advanced Engineering Sciences 40(6):86-91(2008)
王超,王丽娅,孙琴.低浓度镉胁迫下2种水生植物体内植物络合素的响应[J].工程科学与技术,2008,40(6):86-91. DOI：

Wang Chao, Wang Li-ya, Sun Qin. Response of phytochelatins in two macrophytes exposed to environmentally relevant lower concentrations of cadmium. [J]. Advanced Engineering Sciences 40(6):86-91(2008) DOI：

摘要

中文摘要: 采用溶液培养方式，研究了水环境低浓度镉(Cd)(0.01~0.64µmol/L)较长时间胁迫下漂浮植物水浮莲(Pistia stratiotes L.)和沉水植物伊乐藻(Elodea nuttallii)体内植物络合素（PCs）的响应规律。结果显示，2种水生植物对外界Cd胁迫表现出明显的吸收和积累效应，水浮莲体内PCs的响应明显强于伊乐藻。水浮莲体内的PCs诱导量与Cd处理浓度存在良好的剂量—效应关系，Cd浓度≥0.08µmol/L水浮莲根系产生明显毒害效应并伴随根系PCs的诱导量急剧增加。回归分析显示，2种水生植物体内PCs的合成水平与Cd的生物毒性呈现一定的线性关系，表明PCs可作为重金属Cd胁迫的生物标记物指示水体中重金属的毒害程度。比较而言，水浮莲体内PCs对Cd污染更为敏感，可通过检测其根系PCs的含量来评价和预测实际水环境中Cd的污染。

Abstract

Abstract: In this study a solution culture experiment was conducted to investigate the response of phytochelatins (PCs) in a floating aquatic plant Pistia stratiotes L. and a submerged one Elodea nuttallii exposed to a range of lower concentrations of cadmium (Cd) (0.01~0.64µmol/L). It was observed that two macrophytes showed obvious cumulative effects to lower concentrations of Cd exposure. PCs were significantly induced in P. stratiotes L. in a dose-dependent manner and increased with the increase of exogenous Cd concentrations. Cd concentrations at 0.08~0.64µmol/L were highly toxic to P. stratiotes L.

accompanied by the dramatic production of PCs of plant tissues

especially in roots. Regressive analysis showed that there were linearly positive relationships between PC contents and Cd toxicity in E. nuttallii and P. stratiotes L.. It was indicated that PCs could be a promising biomarker for estimating Cd toxicity. Compared with E. nuttallii

PCs in roots of P. stratiotes L. was sensitive to Cd contamination and may be a sensitive indicator to reflect Cd toxicity in the aquatic ecosystem.

关键词

植物络合素(PCs）镉(Cd)水生植物水浮莲伊乐藻

Keywords

Phytochelatins (PCs)CadmiumMacrophytesPistia stratiotes L.Elodea nuttallii

references

Rauser W E,Phytochelatins and related peptides,Plant Physiology,1995.

Inouhe M,Phytochelatins.Braz,Plant Physiology,2005(1).

Yin L,Zhou Y,Fan X,Induction of phytochelatins in Lemna aequinoctialis in response to cadmium exposure,Bulletin of Environmental Contamination and Toxicology,2002(4).

Sanità di Toppi L,Vurro E,Rossi L,Different compensatory mechanisms in two metal-accumulating aquatic macrophytes exposed to acute cadmium stress in outdoor artificial lakes,Chemosphere,2007(4).

Tripathi R D,Rai U N,Gupta M,Induction of phytochelatins in Hydrilla verticillata (l.f.) Royle.under cadmium stress,Bulletin of Environmental Contamination and Toxicology,1996.

高华.张玉秀.柴团耀植物络合素和植物络合素合酶的研究 [J].

Sanità di Toppi L,Gabbrielli R,Response to cadmium in higher plants,Environmental and Experimental Botany,1999(2).

Sneller F E C,Van Heerwaarden L M,Koevoets P L M,Derivatization of phytochelatins from Silene vulgaris,induced upon exposure to arsenate and cadmium:comparison of derivatization with Ellman\'s reagent and monobromobimane,Journal of Agricultural and Food Chemistry,2000(9).

Tang D G,Schfer M M,Vang K,Determination of dissolved thiols using solid-phase extraction and liquid chromatographic determination of fluorescently derivatized thiolic compounds,Journal of Chromatography A,2003(1).

邬飞波.张国平植物螯合肽及其在重金属耐性中的作用 [J].

Pawlik Skowrońska B,Pirszel J,Brown M T,Concentrations of phytochelatins and glutathione found in natural assemblages of seaweeds depend on species and metal concentrations of the habitat,Aquatic Toxicology,2007(3).

Pawlik Skowrońska B,Relationship between acid-soluble thiol peptides and accumulated Pb in the green alga Stichococcus bacillaris,Aquatic Toxicology,2000(3).

Pawlik Skowrońska B,Phytochelatin production in freshwater algae Stigeoclonium in response to heavy metals contained in mining water;effect of some environmental factors,Aquatic Toxicology,2001.

Knauer K,Ahner B,Xue H B,Metal and phytochelatin content in phytoplankton from freshwater lakes with different metal concentrations,Environmental Toxicology and Chemistry,1998(12).

Kelrtjens W G,Beusichem M L,Phytochelatins as biomarkers for heavy metal stress in maize(Zea mays L.)and wheat(Triticum aestivum L.):combined effects of copper and cadmium,Plant and Soil,1998.

Peijnenburg W J G M,Poshuma L,Eijsackers H J P,A conceptual framework for implementation of bioavailability of metals for environmental management purposes,Ecotoxicology and Environmental Safety,1997(2).

更多指标>

Views

下载量

CNKI被引量

Alert me when the article has been cited

提交

Tools

Publicity Resources

No data

Related Author

No data

Related Institution

No data

⁰