Genetic modification of wetland grasses for phytoremediation.
Wetland grasses and grass-like monocots are very important natural remediators of pollutants. Their genetic improvement is an important task because introduction of key transgenes can dramatically improve their remediation potential. Tissue culture is prerequisite for genetic manipulation, and methods are reported here for in vitro culture and micropropagation of a number of wetland plants of various ecological requirements such as salt marsh, brackish water, riverbanks, and various zones of lakes and ponds, and bogs. The monocots represent numerous genera in various families such as Poaceae, Cyperaceae, Juncaceae, and Typhaceae. The reported species are in various stages of micropropagation and Arundo donax is scaled for mass propagation for selecting elite lines for pytoremediation. Transfer of key genes for mercury phytoremediation into the salt marsh cordgrass (Spartina alterniflora) is also reported here. All but one transgenic lines contained both the organomercurial lyase (merB) and mercuric reductase (merA) sequences showing that co-introduction into Spartina of two genes from separate Agrobacterium strains is possible.
Czakó
Mihály
M
Department of Biological Sciences, University of South Carolina, Columbia, SC 29208, USA.
Feng
Xianzhong
X
He
Yuke
Y
Liang
Dali
D
Márton
László
L
D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism*; D001673:Biodegradation, Environmental; D005822:Genetic Vectors; D008190:Lyases / Q000235:genetics / Q000378:metabolism*; D008628:Mercury / Q000378:metabolism* / Q000493:pharmacokinetics; D010088:Oxidoreductases / Q000235:genetics / Q000378:metabolism*; D030821:Plants, Genetically Modified / Q000378:metabolism*; D006109:Poaceae / Q000235:genetics* / Q000378:metabolism*; D012989:Soil Pollutants / Q000493:pharmacokinetics*; D013045:Species Specificity; D014162:Transfection
D001426:Bacterial Proteins; D012989:Soil Pollutants; D010088:Oxidoreductases; C021551:mercuric reductase; D008190:Lyases; C097247:MerB protein, Bacteria; D008628:Mercury