Production of plants for phytoremediation by metabolic engineering: Enhancement of an ability to remove environmental formaldehyde and methanol

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Previously we succeeded in conferring an ability of absorbing and assimilating formaldehyde to plants by genetic engineering. In order to put this invention to practical use, (1) the improvements were made on the gene constructs to be expressed, (2) the molecular mechanism of toxicity of formaldehyde was partly elucidated, and (3) the applicability of this invention to a horticultural plant and a monocot plant, rice, was also demonstrated. As a step toward development of plants with an ability to assimilate methane, further introduction of the gene for methanol oxidase was also initiated.