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Biologia Plantarum

, 34:159 | Cite as

Effect of nacl- salinity on metabolism of proline in salt- sensitive and salt- resistant cultivars of rice

  • D. Roy
  • A. Bhunia
  • N. Basu
  • S. K. Banerjee
Brief communication

Abstract

The effect of NaCl at sublethal concentration was observed on germinating seeds of salt-sensitive and -resistant rice cultivars with respect to the level of proline regulatory enzymes and the growth of seedlings on different days of early germination period. The two enzymes of proline biosynthesis and catabolism, Δ-pyrroline-5-carboxylate reductase and L-proline dehydrogenase, were taken into consideration to observe the effects of 100 mM NaCl on their activities in both rice cultivars. The activity of Δ-pyrroline-5-carboxylate reductase in salt-resistant cultivar was increased twice after 5 d in 100 mM NaCl. Simultaneously, the activity of L-proline dehydrogenase was decreased significantly. High activities of Δ-pyrroline-5-carboxylate reductase may be regarded as a biological marker for screening the sensitive and resistant cultivars of rice seed under NaCl-salinity.

Keywords

Rice Cultivar Proline Accumulation Free Proline Ballygunge Circular Road Resistant Rice Cultivar 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Institute of Experimental Botany 1992

Authors and Affiliations

  • D. Roy
    • 1
  • A. Bhunia
    • 1
  • N. Basu
    • 1
  • S. K. Banerjee
    • 1
  1. 1.Department of BiochemistryUniversity College of Science Calcutta UniversityCalcuttaIndia

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