Developmental and LED Light Source Modulation of Carotenogenic Gene Expression in Oncidium Gower Ramsey Flowers
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ORIGINAL PAPER
Developmental and LED Light Source Modulation of Carotenogenic Gene Expression in Oncidium Gower Ramsey Flowers Wen-Li Lee & Jian-Zhi Huang & Li-Chi Chen & Chi-Chu Tsai & Fure-Chyi Chen
# Springer Science+Business Media New York 2013
Abstract Cut flowers of the orchid Oncidium Gower Ramsey are valuable agricultural produce around the world because of their yellow color contributed by carotenoids in adaxial and abaxial epidermal layers in petals and labellum. Here, we investigated the regulation of carotenogenic genes in response to different light qualities in Oncidium flowers. Total chlorophyll content was high in young flower buds and reduced during flower development, but carotenoid content was increased during flower development. We detected 11 key carotenoid biosynthesis genes and determined their expression profiles with light treatment. Real-time PCR revealed high mRNA levels of most genes, except OncCHYB and OncSDR, in Wen-Li Lee and Jian-Zhi Huang contributed equally to this work. Electronic supplementary material The online version of this article (doi:10.1007/s11105-013-0617-9) contains supplementary material, which is available to authorized users. W.
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