Nitric Oxide in Plants: Production and Cross-talk with Ca2+ Signaling

Nitric oxide (NO) is a diatomic gas that performs crucial functions in a wide array of physiological processes in animals. The past several years have revealed much about its roles in plants. It is well established that NO is synthesized from nitrite by nitrate reductase (NR) and via chemical pathwa...

Full description

Saved in:
Bibliographic Details
Published in:Molecular plant 2008-03, Vol.1 (2), p.218-228
Main Authors: Besson-Bard, Angélique, Courtois, Cécile, Gauthier, Adrien, Dahan, Jennifer, Dobrowolska, Grazyna, Jeandroz, Sylvain, Pugin, Alain, Wendehenne, David
Format: Article
Language:English
Subjects:
Animals
Arabidopsis - enzymology
Arabidopsis - genetics
Arabidopsis - physiology
Arginine - metabolism
Calcium - metabolism
Calcium - physiology
Calcium-Transporting ATPases - metabolism
Citrulline - metabolism
Genome, Plant
Life Sciences
Mammals
Nitrate Reductase - metabolism
Nitric Oxide - metabolism
Nitric Oxide - physiology
Nitric Oxide Synthase - metabolism
Nitriles - metabolism
Nitrites - metabolism
Plant Physiological Phenomena
Protein Kinases - metabolism
Signal Transduction - physiology
Vegetal Biology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Nitric oxide (NO) is a diatomic gas that performs crucial functions in a wide array of physiological processes in animals. The past several years have revealed much about its roles in plants. It is well established that NO is synthesized from nitrite by nitrate reductase (NR) and via chemical pathways. There is increasing evidence for the occurrence of an alternative pathway in which NO production is catalysed from L-arginine by a so far non-identified enzyme. Contradictory results have been reported regarding the respective involvement of these enzymes in specific physiological conditions. Although much remains to be proved, we assume that these inconsistencies can be accounted for by the limited specificity of the pharmacological agents used to suppress NO synthesis but also by the reduced content of L-arginine as well as the inactivity of nitrate-permeable anion channels in nitrate reductase- and/or nitrate/nitrite-deficient plants. Another unresolved issue concerns the molecular mechanisms underlying NO effects in plants. Here, we provide evidence that the second messenger Ca2+as well as protein kinases including MAPK and SnRK2, are very plausible mediators of the NO signals. These findings open new perspectives about NO-based signaling in plants.
ISSN:1674-2052
1752-9867
DOI:10.1093/mp/ssm016