Int. J. Mol. Sci. 2014, 15(3), 4657-4670; doi:10.3390/ijms15034657
Article

Influence of Green, Red and Blue Light Emitting Diodes on Multiprotein Complex Proteins and Photosynthetic Activity under Different Light Intensities in Lettuce Leaves (Lactuca sativa L.)

Received: 29 January 2014; in revised form: 28 February 2014 / Accepted: 11 March 2014 / Published: 17 March 2014
(This article belongs to the Section Biochemistry, Molecular Biology and Biophysics)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: The objective of this study was to investigate the response of light emitting diodes (LEDs) at different light intensities (70 and 80 for green LEDs, 88 and 238 for red LEDs and 80 and 238 μmol m−2 s−1 for blue LEDs) at three wavelengths in lettuce leaves. Lettuce leaves were exposed to (522 nm), red (639 nm) and blue (470 nm) LEDs of different light intensities. Thylakoid multiprotein complex proteins and photosynthetic metabolism were then investigated. Biomass and photosynthetic parameters increased with an increasing light intensity under blue LED illumination and decreased when illuminated with red and green LEDs with decreased light intensity. The expression of multiprotein complex proteins including PSII-core dimer and PSII-core monomer using blue LEDs illumination was higher at higher light intensity (238 μmol m−2 s−1) and was lowered with decreased light intensity (70–80 μmol m−2 s−1). The responses of chloroplast sub-compartment proteins, including those active in stomatal opening and closing, and leaf physiological responses at different light intensities, indicated induced growth enhancement upon illumination with blue LEDs. High intensity blue LEDs promote plant growth by controlling the integrity of chloroplast proteins that optimize photosynthetic performance in the natural environment.
Keywords: lettuce (Lactuca sativa L.); light emitting diodes; photosynthesis; stomata; BN-PAGE
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MDPI and ACS Style

Muneer, S.; Kim, E.J.; Park, J.S.; Lee, J.H. Influence of Green, Red and Blue Light Emitting Diodes on Multiprotein Complex Proteins and Photosynthetic Activity under Different Light Intensities in Lettuce Leaves (Lactuca sativa L.). Int. J. Mol. Sci. 2014, 15, 4657-4670.

AMA Style

Muneer S, Kim EJ, Park JS, Lee JH. Influence of Green, Red and Blue Light Emitting Diodes on Multiprotein Complex Proteins and Photosynthetic Activity under Different Light Intensities in Lettuce Leaves (Lactuca sativa L.). International Journal of Molecular Sciences. 2014; 15(3):4657-4670.

Chicago/Turabian Style

Muneer, Sowbiya; Kim, Eun J.; Park, Jeong S.; Lee, Jeong H. 2014. "Influence of Green, Red and Blue Light Emitting Diodes on Multiprotein Complex Proteins and Photosynthetic Activity under Different Light Intensities in Lettuce Leaves (Lactuca sativa L.)." Int. J. Mol. Sci. 15, no. 3: 4657-4670.

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