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Pathways of nitric oxide metabolism and operation of phytoglobins in legume nodules: missing links and future directions

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Title Pathways of nitric oxide metabolism and operation of phytoglobins in legume nodules: missing links and future directions
 
Creator Berger, Antoine
Brouquisse, Renaud
Pathak, Pradeep Kumar
Hichri, Imène
Singh, Inderjit
Bhatia, Sabhyata
Boscari, Alexandre
Igamberdiev, Abir U.
Gupta, Kapuganti Jagadis
 
Subject nitrite
mitochondria
phytoglobin
nitrate reductase
nitric oxide
Rhizobium
 
Description Accepted date: 15 January 2018
The interaction between legumes and rhizobia leads to the establishment of a beneficial symbiotic relationship. Recent advances in legume - rhizobium symbiosis revealed that various reactive oxygen and nitrogen species including nitric oxide (NO) play important roles during this process. Nodule development occurs with a transition from a normoxic environment during the establishment of symbiosis to a microoxic environment in functional nodules. Such oxygen dynamics are required for activation and repression of various NO production and scavenging pathways. Both the plant and bacterial partners participate in the synthesis and degradation of NO. However, the pathways of NO production and degradation as well as their cross-talk and involvement in the metabolism are still a matter of debate. The plant-originated reductive pathways are known to contribute to the NO production in nodules under hypoxic conditions. Non-symbiotic hemoglobin (phytoglobin) (Pgb) possesses high NO oxygenation capacity, buffers and scavenges NO. Its operation, through a respiratory cycle called Pgb-NO cycle, leads to the maintenance of redox and energy balance in nodules. The role of Pgb/NO cycle under fluctuating NO production from soil needs further investigation for complete understanding of NO regulatory mechanism governing nodule development to attain optimal food security under changing environment.
This work was supported by Ramalingaswami Fellowship and
IYBA to KJG. PKP is recipient of fellowship from UGC, India. This work was
supported by the French Government (National Research Agency, ANR) through the
"Investments for the Future" LABEX SIGNALIFE program (# ANR-11-LABX-0028-
01).
 
Date 2018-01-23T07:22:23Z
2018-01-23T07:22:23Z
2018
 
Type Article
 
Identifier Plant, Cell & Environment, 41(9): 2057-2068
1365-3040
http://223.31.159.10:8080/jspui/handle/123456789/828
http://onlinelibrary.wiley.com/doi/10.1111/pce.13151/full
10.1111/pce.13151
 
Language en_US
 
Format application/pdf
 
Publisher John Wiley & Sons