Purification capability of tobacco transformed with enzymes from a methylotrophic bacterium for formaldehyde.
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.
Sawada
Ayako
A
Graduate School of Regional Economic Systems, Kanazawa Seiryo University, Ishikawa, Japan.
Oyabu
Takashi
T
Chen
Li-mei
LM
Li
Kun-zhi
KZ
Hirai
Norihito
N
Yurimoto
Hiroya
H
Orita
Izumi
I
Sakai
Yasuyoshi
Y
Kato
Nobuo
N
Izui
Katsura
K
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
D000393:Air Pollutants; D014992:Xylenes; D005557:Formaldehyde; D014050:Toluene; D000446:Aldehyde-Lyases; D019747:Aldose-Ketose Isomerases