TITLE

Changes in carotenoid content and distribution in living plant tissue can be observed and mapped in situ using NIR-FT-Raman spectroscopy

AUTHOR(S)
Baranski, Rafal; Baranska, Malgorzata; Schulz, Hartwig
PUB. DATE
December 2005
SOURCE
Planta;Dec2005, Vol. 222 Issue 3, p448
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Near-infrared (NIR) excited Fourier transform (FT) Raman spectroscopy has been applied for in situ analysis of carotenoids in living plant samples. Pelargonium x hortorum leaf has been mapped using a Raman mapping technique to illustrate heterogeneous distribution of carotenoids. Mapping has also been employed for visualization of carotenoid changes induced by abiotic and biotic stress. In a tomato ( Lycopersicon esculentum Mill.) fruit, inhibition of lycopene biosynthesis and accumulation of beta-carotene are demonstrated in tissue affected by sunscald physiological disorder. Raman map of diseased sugarbeet ( Beta vulgaris L.) leaf shows a local carotenoid decline at infection site while the carotenoid accumulation is evident in parsley ( Petroselinum crispum Mill. Nym.) as a response to Septoria petroselini infestation. Additionally, occurrence of lutein, beta-carotene and capsanthin, and changes in their relative content during bell pepper ( Capsicum annum L.) fruit ripening are described by single Raman spectra. Based on these examples, the potential application of NIR-FT-Raman spectroscopy for a non-destructive analysis of carotenoids in various living plant tissues of the size ranging from about 0.01 mm2 to 35 cm2 is discussed.
ACCESSION #
18564998

 

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