Zinc hyperaccumulation in Thlaspi caerulescens .1. Influence on growth and mineral nutrition

被引：45

作者：

Tolra, RP ^{[1
]}

Poschenrieder, C ^{[1
]}

Barcelo, J ^{[1
]}

机构：

[1] UNIV AUTONOMA BARCELONA,FAC CIENCIAS,LAB FISIOL VEGETAL,E-08193 BELLATERRA,SPAIN

来源：

JOURNAL OF PLANT NUTRITION | 1996年 / 19卷 / 12期

关键词：

D O I：

10.1080/01904169609365219

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Thlaspi caerulescens, a metallophyte that is able to accumulate up to 4% zinc (Zn) in leaf dry matter, has attracted much attention for its possible use in phytoremediation of metal contaminated soils. In the present study, the influence of Zn supply on mineral nutrition in T. caerulescens was investigated, in order to establish the extent to which growth stimulation by high Zn supply is related to changes in the levels of other essential nutrients. The plants were exposed to nutrient solutions containing 1.5, 100, 500, 750, 1000, or 1500 mu M Zn. Zinc supply significantly influenced root and shoot concentrations of essential nutrients, but excepting Zn, the concentrations stayed within the range considered adequate for optimum growth in Brassicaceae crops. Best performance was achieved with the supply of 500 mu M Zn. Growth stimulation by this treatment was accompanied by increased translocation of iron (Fe) from root to shoot and a significant correlation between shoot dry weight and Fe concentrations in shoots was found.

引用

页码：1531 / 1540

页数：10

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