, Volume 10, Issue 2, pp 203–211 | Cite as

Direct discrimination of different plant populations and study on temperature effects by Fourier transform infrared spectroscopy

  • Khairunisa Khairudin
  • Nur Afiqah Sukiran
  • Hoe-Han Goh
  • Syarul Nataqain Baharum
  • Normah Mohd Noor
Original Article


Fourier transform infrared spectroscopy was used to characterise highland and lowland populations of Polygonum minus Huds. grown in different controlled environments. A thermal perturbation technique of two-dimensional correlation infrared spectroscopy (2D-IR) correlation spectra was applied to establish differences between the populations. The absorption peaks at 3,480 cm−1 (hydroxyl group), 2,927 cm−1 (methyl group), 1,623 cm−1 (carbonyl group), and 1,068 cm−1 (C–O group) were particularly powerful in separating the populations. These peaks, which indicate the presence of carbohydrate, terpenes, amide and flavonoids were more intense for the highland populations than lowland populations, and increased in environments with a higher temperature. Wavenumbers (1,634, 669 cm−1) and (1,634, 1,555 cm−1) in the 2D-IR correlation spectra provided fingerprint signals to differentiate plants grown at different temperatures. This study demonstrates that IR fingerprinting, which combines mid-IR spectra and 2D-IR correlation spectra, can directly discriminate different populations of P. minus and the effects of temperature.


Fourier transform infrared spectroscopy (FTIR) Two-dimensional correlation infrared spectroscopy (2D-IR) Plant populations Temperature effect Metabolite screening 

Supplementary material

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Supplementary material 1 (TIFF 125 kb)
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Supplementary material 5 (DOC 37 kb)


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Khairunisa Khairudin
    • 1
  • Nur Afiqah Sukiran
    • 1
  • Hoe-Han Goh
    • 1
  • Syarul Nataqain Baharum
    • 1
  • Normah Mohd Noor
    • 1
  1. 1.Institute of Systems Biology (INBIOSIS)Universiti Kebangsaan MalaysiaBangiMalaysia

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