Loblolly Pine, P. taeda, is a southern softwood tree found in the southern states, in particular, Georgia,  The lignin component of loblolly pine branches unaffected and affected by fusiform rust (Cronartium quericum f. sp. Fusiforme) were analyzed by Nuclear Magnetic Resonance (NMR) Spectroscopy and Fourier Transform Infrared (FTIR).  Fusiform rust often infects loblolly pine with a disease that eventually causes the affected branches to die.  The 1H NMR showed two signals for the affected at 5.1ppm and 5.3ppm and 13C NMR showed the same signals at 68.3ppm and 68.8ppm which was due to C-H bonds. This difference was also observed in FTIR at 2900 cm-1 for the C-H stretching.  There were also differences observed at 1640cm-1.There was also an increase in the phenolic region of the 13C NMR.  The klason lignin percentage for the affected was 38.4% and for the unaffected was 33.7%.

Comparison of lignin component of Loblolly Pine by nuclear magnetic resonance spectroscopy and Fourier transform infrared: Affected and unaffected by Fusiform rust Cronartium quercuum f.sp. fusiforme

241st National Meeting (2011)

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