The content in assimilating pigments of the cotyledons of the red cabbage plantlets illuminated with LEDs

This is an automatically generated default intro template – please do not edit.

	Read full article
Article Title:	The content in assimilating pigments of the cotyledons of the red cabbage plantlets illuminated with LEDs
Authors:	Mirela Maria Matioc-Precup, Dorina Cachiţă-Cosma
Affiliation:	Faculty of Sciences, University of Oradea, Romania Faculty of Natural Sciences, Engineering and Informatics, ”Vasile Goldiş” Western University, Arad, Romania
Abstract:	The red cabbage seeds germination and the exposition of the plantlets – for 10 days – to the white or colored light issued by LEDs (Light-Emitting Diodes), compared with the control samples – which were grown in daylight (values considered 100%) – led to a reduction of the content in total assimilating pigments of their cotyledons, as following: with 9.19% – at the samples exposed to white light, with 14.73% – at those illuminated with blue light, with 14.46% – at the seedlings exposed to yellow light, and with 23.61% – at the plantlets lighted with LEDs issuing green light; the seedlings illuminated with red radiations marked an insignificant increase, of 0.39%, as against to the control. Thus, the lowest assimilating pigments content (diminished with 16.34% – chlorophyll a and with 25.48% – chlorophyll b, respectively, with 22.15% – the total amount of green pigments and with 30.72% – the carotenoidic pigments) was registered in the cotyledons of the red cabbage plantlets exposed for 10 days to an illumination with LEDs generating green light.
Keywords:	Brassica oleracea, seedlings, cotyledons, assimilating pigments, Light-Emitting Diodes
References:	Folta K.M., Maruhnich S.A., (2007) – Green light: a signal to slow down or stop. Journal of Experimental Botany, 58, (12), pp. 3099-3111. Frenchilla S., Talbott L.D., Bogomolni R.A., Zeiger E., (2000) – Reversal of blue light-stimulated stomatal opening by green light. Plant Cell Physiology, 41, pp. 171-176. Massa G.D., Kim H.H., Wheeler R.M., Mitchell C.A. (2008) – Plant productivity in response to LED lighting. Hortscience, 43, (7), pp. 1951-1956. Matioc-Precup M.M., Cachiţă C.D., (2011) – Effects of light of different wavelengths, emitted by Light-Emitting Diodes (LEDs) on the germination of seeds of Pinus nigra Arn. and on the growth of the plantlets resulted from their embryos. Studia Universitatis “Vasile Goldiş”, Life Sciences Series, 21, (3), pp. 625-632. Matioc-Precup M.M., Cachiţă C.D., (2012a) – Determination of assimilator pigments content in cotyledons of Pinus nigra Arn. plantlets illuminated with light-emitting diodes (LEDs). Studia Universitatis “Vasile Goldiş”, Life Sciences Series, 22, (1), pp. 117-124. Matioc-Precup M.M., Cachiţă C.D., (2012b) – The germination and growth of Brassica oleracea L. var. capitata f. rubra plantlets under the influence of colored light of different provenance. Studia Universitatis “Vasile Goldiş”, Life Sciences Series, 22, (2), pp. 193-202. Moran R., Porath D., (1980) – Chlorophyll determination in intact tissues using N,N- dimetylformamide. Plant Physiology, 65, pp. 478 – 479. Samuoliene G., Brazaityte A., Urbonaviciute A., Sabajeviene G., Duchovskis P., (2010) – The effect of red and blue light component on the growth and development of frigo strawberries. Zemdirbyste – Agriculture, 97, (2), pp. 99-104. Tennessen D.J., Singsaas E.L., Sharkey T.D., (1994) – Light-emitting diodes as a light source for photosynthesis research. Photosynthesis Research, 39, pp. 85-92. Wellburn A.R., (1994) – The spectral determination of chlorophylls a and b, as well as total carotenoides, using various solvents with spectrophotometers of different resolution. Plant Physiology, 144, (1), pp. 307 – 313. www.zextar.ro.
*Correspondence:	Mirela Maria Matioc-Precup, University of Oradea, Faculty of Sciences, Oradea e-mail: mirelamatioc@yahoo.com