Ex Planta Phytoremediation of Trichlorophenol and Phenolic Allelochemicals via an Engineered Secretory Laccase  

Oleh:

Guo-Dong, Wang ; Qian-Jin, Li ; Bin, Luo ; Xiao-Ya Chen

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Nature Biotechnology: The Science and Business of Biotechnology vol. 22 no. 7 (Jul. 2004), page 893-898.
Topik: CHEMICAL; ex planta phytoremediation; trichlorophenol; phenolic allelochemicals; engineered secretory laccase

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: NN9.1 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Plant roots release a range of enzymes capable of degrading chemical compound in their immediate vicinity. We present a system of phytoremediation ex planta based on the oevr expression of one such enzyme, a secretory laccase. Laccases catalyze the oxidation of a broad range of phenolic compounds, including polychlorinated phenols such as compounds, including polychlorinated phenols such as 2,4,5 - triclorophenol (TCP), that are amount the most hazardous and recalcitrant pollutants in the environment. We isolated a secretory lacasse cDNA of LAC1, which is specifically expressed in the roots of Gossypium arboreum (cotton), transgenic arabidopsos thaliana plants overexpressing LAC1 exhibited enhanced resistance to several phenolic allelo chemicals and TCP. The secretory laccase activity on these chemicals and TCP. The secretory laccase activity in these plants was responsible for the conversion of sinapic acid into a mono lactone type dimer and for the transformation of TCP.

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