STABILITY OF ENHANCED YIELD AND METAL UPTAKE BY SUNFLOWER MUTANTS FOR IMPROVED PHYTOREMEDIATION

被引：26

作者：

Nehnevajova, Erika ^{[1
,3
]}

Herzig, Rolf ^{[1
]}

Bourigault, Cecile ^{[1
]}

Bangerter, Sara ^{[1
]}

Schwitzguebel, Jean-Paul ^{[2
]}

机构：

[1] Phytotech Fdn PT F, CH-3013 Bern, Switzerland

[2] Swiss Fed Inst Technol Lausanne EPFL, LBE, CH-1015 Lausanne, Switzerland

[3] Free Univ Berlin, Inst Biol Appl Genet, D-14195 Berlin, Germany

来源：

INTERNATIONAL JOURNAL OF PHYTOREMEDIATION | 2009年 / 11卷 / 04期

关键词：

Helianthus annuus L; genetic stability; metal accumulation; metal extraction; mutagenesis; non-GM approach; phytoremediation; sunflower; HELIANTHUS-ANNUUS; IN-VITRO; TANNERY SLUDGE; HEAVY-METALS; PHYTOEXTRACTION; PLANTS; ACCUMULATION; SOIL; EXTRACTION; BIOENERGY;

D O I：

10.1080/15226510802565394

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Plant biomass and metal shoot accumulation are key factors for efficient phytoextraction. In a previous study, chemical mutagenesis has been used to improve the phytoextraction potential of sunflowers. The main goal of the present study was to assess the stability of sunflower mutants with improved biomass and metal accumulation properties in the 3rd and 4th generations. As compared to control plants, the best M3 mutants showed the following improvement of metal extraction: Cd 3-5-fold, Zn 4-5-fold, and Pb 3-5-fold. The best M4 sunflowers also showed enhanced metal extraction: Cd 3-4- fold, Zn 5-7-fold, Pb 6-8-fold and Cr 5-7-fold. The control sunflower inbred line IBL 04, grown directly on the field, accumulated metals in individual organs in the following decreasing order: Cd and Zn: leaves stem roots flower seeds; Cr: roots flower seeds leaves stem. The best sunflower mutants showed either higher metal accumulation in shoots or enhanced metal accumulation in roots, suggesting to improved phytoextraction or rhizofiltration efficiency, respectively.

引用

页码：329 / 346

页数：18

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