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12 Transgenic Approaches to Enhance Phytoremediation of Heavy Metal-Polluted Soils 259
References al. et Rugh (1998) al. et He (2001) al. et Haque (2010) al. et Rugh (1998) al. et Ruiz (2003) al. et Bizily (2000) al. et Czako ´ (2006) al. et Bizily (2003)
min 1 ). min 1 ), media μMHg stem improved Germinating germination with phenyl-Hg + media on germination phenyl-Hg + callus). phenyl-Hg +
hydroponic FW] 1 μMHg (25 with FW] 1 times 5 and on germination 25 with FW] 1 ), by times to Hg). μM Hg μM day). to medium to μM WT to
from [g μgHg 0 Hg μM solution [g μgHg 0 min 1 ), Germinating to lethal solution [g μgHg 0 5 and up resisted 20 beyond 10 with per lethal is on grown μM 25 with Germinating lethal is 100 and lethal are μM 25 with
controls volatilization 5 of 50–100 seeds). WT from (23.8 g 1 min 1 ). is Hg from (467 g 1 ), roots survive media FW] 1 [g Hg μM seedlings solution min 1 . μMCH 3 -Hg + Hg μM phenyl-Hg + solution min 1 .
WT (rate with of volatilization roots μgHg 0 μM (50 roots μgHg 0 hydroponic μgHg 0 (25 Hg FW] 1 500 FW] 1
to Hg of Hg media by (6.9 g 1 Hg volatization by (131 Transgenic not did 1.2 μM with from [g (1 tolerate μM from [g Hg 0
compared rate μM 5 on germination Hg of times 8 leaves μgHg 0 μM Hg of times 9 leaves g 1 ). (WT from of 50 with yield phenyl-Hg + . Hg Hg 0 ng μMCH 3 -Hg + can 50 Hg ng
as higher with medium Germinating to lethal rate Hg: μM by times (4.1 stem 100–350 seeds). WT rate days: 3 by times μgHg 0 Hg μM volatization (rate times media seeds). WT biomass μM volatized 60 of rate 10 seeds). WT culture μMHgor volatized 760 of rate
volatilization Phenotype times 2.5 is Increased 25 3 by with of Increased after 8 (92 140 Hg 10 on of Doubled 400 Seedlings at with of Callus (225 Seedlings at
mercury gene of (merApe9) of (merApe9) of (merA18) of of (merBpe) of (merBpe) plus
for merA coli merA coli coli E. merA coli merA and coli merB coli merApe9 merB coli merApe9 coli E. merApe9
engineered Transformed Optimized E. Optimized E. of merA Optimized E. merB E. Optimized E. and Optimized E. and of merB
genetically (MerB endoplasmatic
plants Species thaliana tabacum tabacum tulipifera tabacum (chloroplast) tabacum (chloroplast) alterniflora thaliana to reticulum)
of A. N. N. L. N. N. S. A.
Properties
12.2 Overexpressed reductase Organomercurial plus lyase mercuric reductase
Table activity Mercuric