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Influence of salinity and abscisic acid on the O2 uptake by N2-fixing nodules of common bean

Authors
  • Jebara, M.1
  • Harzalli-Jebara, S.1
  • Payré, H.2
  • Aouani, M. E.1
  • Drevon, J. J.2
  • 1 Institut National de Recherche Scientifique et Technique, BP 95, Hammam Lif, 2050, Tunisie , Hammam Lif (Tunisia)
  • 2 INRA, UMR1222, Rhizosphère et Symbiose, 1 Place Viala, Montpellier, 34060, France , Montpellier (France)
Type
Published Article
Journal
Biologia Plantarum
Publisher
Kluwer Academic Publishers-Consultants Bureau
Publication Date
Dec 01, 2006
Volume
50
Issue
4
Pages
717–721
Identifiers
DOI: 10.1007/s10535-006-0114-1
Source
Springer Nature
Keywords
License
Yellow

Abstract

The effects of NaCl and ABA on the respiration of N2-fixing nodules were analysed in common bean (Phaseolus vulgaris) inoculated with Rhizobium tropici the reference strain CIAT899. Shoot and nodule growth was more inhibited by NaCl than root growth. The O2 uptake by nodulated roots at 21 kPa O2 was significantly inhibited by salinity. Raising pO2 stimulated nodule respiration more under NaCl treatment than for the control, although it did not compensate totally for the inhibitory effect of NaCl. Short NaCl application was less destructive than long term application. Also, the external application of ABA inhibited nodule respiration, and this inhibition was partly compensated by raising pO2.

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