| Short communication: emission of nitrous oxide (N2O) from transgenic tobacco expressing antisense NiR mRNA | |
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MedLine Citation:
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PMID: 10417728 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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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. |
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Authors:
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Goshima; Mukai; Suemori; Takahashi; Caboche; Morikawa |
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Publication Detail:
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Type: JOURNAL ARTICLE |
Journal Detail:
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Title: The Plant journal : for cell and molecular biology Volume: 19 ISSN: 1365-313X ISO Abbreviation: Plant J. Publication Date: 1999 Jul |
Date Detail:
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Created Date: 1999-08-20 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9207397 Medline TA: Plant J Country: - |
Other Details:
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Languages: Eng Pagination: 75-80 Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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