Heavy metal uptake and stress responses of hydroponically cultivated garlic (Allium sativum L.)

被引：20

作者：

Soudek, Petr

Petrova, Sarka

Vanek, Tomas ^{[1
]}

机构：

[1] Joint Lab Inst Expt Bot AS CR, Vvi, Lab Plant Biotechnol, Prague 16205 6, Czech Republic

来源：

ENVIRONMENTAL AND EXPERIMENTAL BOTANY | 2011年 / 74卷

关键词：

Heavy metals; Uptake; Garlic; Amino acids; HOLCUS-LANATUS L; OXIDATIVE STRESS; ROOT LENGTH; ACCUMULATION; CADMIUM; NICKEL; GROWTH; PLANTS; METALLOTHIONEINS; PHYTOCHELATINS;

D O I：

10.1016/j.envexpbot.2011.06.011

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The accumulation of toxic metals (Cd, Co, Cu and Ni) by Allium sativum plants was followed under hydroponic conditions. The toxic metals were applied at two concentrations (0.05 and 0.25 mM). The effects of heavy metals on chlorophyll and carotenoid content, root length and amino acid exudation were examined to evaluate the impact of heavy metal accumulation on plant growth and development. A significant hyperaccumulation of cadmium by garlic roots was observed. Cobalt stimulated carotenoid production in garlic leaves. Copper accumulation was associated with increased exudation of amino acids to the cultivation medium and elevation of chlorophyll content in leaves. Nickel significantly reduced root growth. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：289 / 295

页数：7

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