Photomorphogenic and chemical responses to blue light in Mentha piperita

Blue light with a wavelength of 450 nm was given to peppermint to study some photomorphogenic and chemical responses. Irradiation was performed without white light (W) and in the presence of W. Blue light + W prompted a significant increase in leaf area and leaf area index and was accompanied by inc...

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Bibliographic Details
Published in:The Journal of essential oil research 1999-11, Vol.11 (6), p.730-738
Main Authors: Maffei, M, Scannerini, S
Format: Article
Language:English
Subjects:
assimilation
Blue light
carbon dioxide
chemical constituents of plants
chlorophyll
essential oil composition
essential oils
growth
Labiatae
Mentha piperita
menthofuran
menthol
phenols
photomorphogenesis
photosynthesis
pigments
plant development
plant pigments
plant protein
stomatal conductance
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Summary:Blue light with a wavelength of 450 nm was given to peppermint to study some photomorphogenic and chemical responses. Irradiation was performed without white light (W) and in the presence of W. Blue light + W prompted a significant increase in leaf area and leaf area index and was accompanied by increased total chlorophyll content and stomatal conductance values. On the other hand, the effect of Blue light + W caused a significant decrease in the essential oil, protein and total phenol content as well as CO2 assimilation. Blue light affected menthol biosynthesis by a 65% reduction, while increasing 2.3 fold the content of menthofuran. The effect of Blue light on gene expression of both morphogenetic and essential oil characters is also discussed.
ISSN:1041-2905
2163-8152
DOI:10.1080/10412905.1999.9712007