FT-IR profiling reveals differential response of roots and leaves to salt stress in a halophyte Sesuvium portulacastrum (L.) L.

In a halophyte, Sesuvium portulacastrum (L.) L., we have applied Fourier Transform InfraRed (FT-IR) spectroscopy to detect the corresponding changes associated with salt-induced physiological changes under long- term treatment with 0, 100 and 500 mM NaCl. FT-IR profiles showed changes in chemical composition and functional groups of proteins, lipids and carbohydrates due to salt treatments, evident as differential FT-IR profiles in both roots and leaves specific to these metabolites. Further, the Principle Component Analysis (PCA) was applied to identify the main sources of variation in FT-IR data due to differential treatment. In PCA, the PC1 showed 85.55% and PC2 showed 18.18% variability in data and confirmed differential response of root and leaves to salt treatment in Sesuvium. The results suggest that FT-IR spectrometry can be used to study stress-induced metabolic changes in plants in relation to their salt tolerance. Keywords: Fourier Transform Infrared Spectroscopy, Sesuvium portulacastrum, Salt stress, Metabolic changes

Abstract licence: CC BY-NC

A person counts once a day per paper. We keep no cookie and no address: a reader is a hash that changes every day. Any month under five reads shows no number.