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Proteomics of nitrogen fixing nodules under various environmental stresses
, J. Ahmad, H. Bashir, M.I. Qureshi
Published in
2012
Volume: 5
   
Issue: 2
Pages: 167 - 176
Abstract
Proteomics is an ideal tool to study the interaction of root nodules and their symbiotic bacteria as it provides a broad overview of proteins produced by both partners during their constant signal exchange and allows the signal transduction path ways following photophosphorylation. Iron containing proteins play a key role in symbiotic nitrogen fixation that occurs in a nodule-a specialized structure present on roots. Several proteins like those related to SNF (symbiotic nitrogen fixation), predominantly components of nitrogenase complexes, such as nifD, nifH, nifK, nitrogen regulatory protein II (GlnB) and PIIA (PtsN), and urease accessory protein (UreE) have been found to be affected by abiotic stress. Nodules are better equipped with all kinds of antioxidant systems (i.e., ascorbate-glutathione pathway or Superoxide dismutase) which have been formed to show a decline under stress conditions. The present review article aims to investigate the nodule physiology, the effect of different abiotic stress on nodule proteins comprehensive account of these stress-responsive proteins and their role in combating stress in legume nodules. This will help to elucidate which specific key proteins are affected by abiotic stress. As such, it will greatly facilitate understanding resistance or stress tolerance mechanism and hence improvement in crop resistance.
About the journal
JournalPlant OMICS
ISSN18360661