Document Detail


Short communication: emission of nitrous oxide (N2O) from transgenic tobacco expressing antisense NiR mRNA
MedLine Citation:
PMID:  10417728     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The emission of N2 and N2O from intact transgenic tobacco (clone 271) expressing antisense nitrite reductase (NiR) mRNA, and wild-type plants grown aseptically, on NO3-, NO2- or NH4+ -containing medium was investigated. 15N contents of gas sampled from gas-sealed pots, in which the plants were grown on 15N-containing medium, were analyzed by gas chromato- graphy and mass spectrometry (GC-MS). No emission of N2 was detected in either of the gas samples from plant clone 271 or the wild-type grown on NO3--containing medium. N2O emission from clone 271 grown on NO3--containing medium was detected, but not from the wild-type plants. The N2O emission rate of clone 271 was 106 ng N2O mg-1 incorporated N week-1 and the N2O emission was inhibited by tungstate (a nitrate reductase inhibitor). No emission of N2O was found from clone 271 or wild-type plants grown on medium containing NH4+. Emission of N2O also was detected from clone 271 grown on NO2--containing medium and its emission rate increased with increasing NO2- levels in plants. We speculate that NO3- is reduced to NO2- and that a part of NO2- is metabolized to N2O in clone 271.
Authors:
Goshima; Mukai; Suemori; Takahashi; Caboche; Morikawa
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Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  The Plant journal : for cell and molecular biology     Volume:  19     ISSN:  1365-313X     ISO Abbreviation:  Plant J.     Publication Date:  1999 Jul 
Date Detail:
Created Date:  1999-08-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9207397     Medline TA:  Plant J     Country:  -    
Other Details:
Languages:  Eng     Pagination:  75-80     Citation Subset:  -    
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