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The role of nitrate reduction in the anoxic metabolism of roots - II. Anoxic metabolism of tobacco roots with or without nitrate reductase activity

Abstract:

The effects of root anoxia on a tobacco (Nicotiana tabacum) wild type (WT) and a transformant (LNR-H) lacking root nitrate reductase were compared. LNR-H plants were visibly more sensitive to oxygen deprivation than WT, showing rapid and heavy wilting symptoms. LNR-H roots also produced substantially more ethanol and lactate than WT roots under anoxia, and their sugar and sugar-P content, as well as their ATP levels, remained higher. The fermentation rates of WT and LNR-H roots were unaffecte...

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Publication status:
Published

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Publisher copy:
10.1023/A:1024591116697

Authors


Stoimenova, M More by this author
Libourel, IGL More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Plant Sciences
Kaiser, WM More by this author
Journal:
PLANT AND SOIL
Volume:
253
Issue:
1
Pages:
155-167
Publication date:
2003-06-05
DOI:
ISSN:
0032-079X
URN:
uuid:47b68ac3-7673-42f4-8898-e46c04899474
Source identifiers:
38719
Local pid:
pubs:38719

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