title: Purification capability of tobacco transformed with enzymes from a methylotrophic bacterium for formaldehyde.
abstract: Plants have the ability to remediate environmental pollution. Especially, they have a high purification capability for airpollution. We have measured the purification characteristics of foliage plants for indoor airpollutants--for example, formaldehyde (HCHO), toluene, and xylene--using a tin oxide gas sensor. HCHO is an important intermediate for biological fixation of C1 compounds in methylotrophs. The ribulose monophosphate pathway of HCHO fixation is inherent in many methylotrophic bacteria, which can grow on Cl compounds. Two genes for the key enzymes, HPS and PHI, from the methylotrophic bacterium Mycobacterium gastri MB19 were introduced into tobacco. In this article, the HCHO-removal characteristic of the transformant was examined by using the gas sensor in order to evaluate quantitatively. The purification characteristics of the transformant for toluene, xylene, and styrene were also measured. The results confirmed an increase of 20% in the HCHO-removal capability. The differences of the purification capabilities for toluene, xylene, and styrene were not recognized.
authors.affiliation: Graduate School of Regional Economic Systems, Kanazawa Seiryo University, Ishikawa, Japan.
authors.forename: Ayako
authors.initials: A
authors.lastname: Sawada
authors.forename: Takashi
authors.initials: T
authors.lastname: Oyabu
authors.forename: Li-mei
authors.initials: LM
authors.lastname: Chen
authors.forename: Kun-zhi
authors.initials: KZ
authors.lastname: Li
authors.forename: Norihito
authors.initials: N
authors.lastname: Hirai
authors.forename: Hiroya
authors.initials: H
authors.lastname: Yurimoto
authors.forename: Izumi
authors.initials: I
authors.lastname: Orita
authors.forename: Yasuyoshi
authors.initials: Y
authors.lastname: Sakai
authors.forename: Nobuo
authors.initials: N
authors.lastname: Kato
authors.forename: Katsura
authors.initials: K
authors.lastname: Izui
mesh_terms: D000393:Air Pollutants / Q000493:pharmacokinetics*; D000446:Aldehyde-Lyases / Q000096:biosynthesis / Q000494:pharmacology*; D019747:Aldose-Ketose Isomerases / Q000096:biosynthesis / Q000494:pharmacology*; D001673:Biodegradation, Environmental; D005557:Formaldehyde / Q000493:pharmacokinetics*; D015964:Gene Expression Regulation, Bacterial; D006801:Humans; D009161:Mycobacterium / Q000201:enzymology* / Q000235:genetics / Q000254:growth & development; D014026:Nicotiana / Q000378:metabolism*; D014050:Toluene / Q000493:pharmacokinetics; D014992:Xylenes / Q000493:pharmacokinetics
chemical_list: D000393:Air Pollutants; D014992:Xylenes; D005557:Formaldehyde; D014050:Toluene; D000446:Aldehyde-Lyases; D019747:Aldose-Ketose Isomerases