Journal of Plant Biochemistry and Biotechnology
  • Year: 1993
  • Volume: 2
  • Issue: 1

Influence of High Salt on Protein Contents and Lipid Peroxidation and their Interaction with High Photon Flux Density on Isolated Chloroplasts of Mustard

  • Author:
  • Sanjay K Mishra1, J V V Dogra2, Gauri S Singhal1,
  • Total Page Count: 4
  • Page Number: 39 to 42

1School of Life Sciences, Jawaharlal Nehru University, New Delhi-110 067, India

2University Department of Botany, Bhagalpur University, Bhagalpur 812007, Bihar

* Corresponding author.

Abstract

The salinity and its interaction with high photon flux density (PFD) on in vivo chlorophyll fluorescence were investigated in isolated chloroplasts of mustard (Brassica juncea L. cv. Pusa Bold). Increase in salt stress decreases the protein contents of leaves and causes increase in lipid peroxidation. Fv/Fm ratios suggesting that the efficiency of the photochemistry of PSII was not affected alone with the salt stressed plants. With high PFD, Fv/Fm ratio decreased with increased salt concentration. Our results indicate that salt stress enhances the photoinhibition of isolated chloroplasts.

Keywords

Brassica juncea, chloroplasts, salt stress, photoinhibition, chlorophyll fluorescence