Effect of postharvest ethylene treatment on carotenoid accumulation and the expression of carotenoid biosynthetic genes in the flavedo of orange (Citrus sinensis L. Osbeck) fruit

2007 ◽  
Vol 43 (1) ◽  
pp. 14-22 ◽  
Author(s):  
Maria J. Rodrigo ◽  
Lorenzo Zacarias
Keyword(s):  
Citrus Sinensis ◽  
Biosynthetic Genes ◽  
Carotenoid Accumulation ◽  
Ethylene Treatment

scholarly journals Expression of Carotenoid Biosynthetic Genes and Carotenoid Biosynthesis during Seedling Development of Momordica charantia

2018 ◽  
Vol 13 (3) ◽  
pp. 1934578X1801300
Author(s):  
Do Manh Cuong ◽  
Jae Kwang Kim ◽  
Jin Jeon ◽  
Tae Jin Kim ◽  
Jong Seok Park ◽  
...  
Keyword(s):  
Gene Expression ◽  
Carotenoid Biosynthesis ◽  
Seedling Development ◽  
Bitter Melon ◽  
Biosynthetic Genes ◽  
Carotenoid Concentration ◽  
Carotenoid Accumulation ◽  
Firm Basis ◽  
Phytohormone Synthesis ◽  
Β Carotene

Carotenoids belong to a large group of secondary metabolites, and have pivotal roles in plants, including photosynthesis and phytohormone synthesis, pigmentation, and membrane stabilization. Additionally, carotenoids are potent antioxidants, and their health benefits are becoming increasingly prominent. In recent years, carotenoids have been studied in many plants. Furthermore, gene expression, as well as carotenoid accumulation in different parts of the bitter melon, has been investigated; however, it has not been studied in bitter melon seedlings. In this study, carotenoid accumulation and transcript levels of McGGPPS1, McGGPPS2, McPSY, McPDS, McZDS, McLCYB, McLCYE1, McLCYE2, McCXHB, and McZEP, involved in carotenoid biosynthesis, were analyzed during seedling development using HPLC and qRT-PCR. The major carotenoids that accumulated in the bitter melon seedlings were lutein and E-β-carotene. The expression of most carotenoid biosynthetic genes increased during seedling development, consistent with the accumulation of violaxanthin, lutein, zeaxanthin, β-cryptoxanthin, 13Z-β-carotene, E-β-carotene, and 9Z-β-carotene in bitter melon seedlings. The results of this study provide a firm basis for comprehending the link between gene expression and carotenoid concentration in bitter melon seedlings.

scholarly journals Molecular Characterization of Carotenoid Biosynthetic Genes and Carotenoid Accumulation in Lycium chinense

Molecules ◽  
2014 ◽  
Vol 19 (8) ◽  
pp. 11250-11262 ◽  
Author(s):  
Shicheng Zhao ◽  
Pham Tuan ◽  
Jae Kim ◽  
Woo Park ◽  
Yeon Kim ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Lycium Chinense ◽  
Biosynthetic Genes ◽  
Carotenoid Accumulation

scholarly journals Effect of Light-Emitting Diodes and Ultraviolet Irradiation on the Soluble Sugar, Organic Acid, and Carotenoid Content of Postharvest Sweet Oranges (Citrus sinensis (L.) Osbeck)

Molecules ◽  
2019 ◽  
Vol 24 (19) ◽  
pp. 3440 ◽  
Author(s):  
Linping Hu ◽  
Can Yang ◽  
Lina Zhang ◽  
Jing Feng ◽  
Wanpeng Xi
Keyword(s):  
Organic Acid ◽  
Citrus Sinensis ◽  
Light Emitting Diodes ◽  
Soluble Sugar ◽  
Red Light ◽  
Carotenoid Content ◽  
Light Emitting ◽  
Total Soluble Sugar ◽  
Carotenoid Accumulation ◽  
Dark Shade

Mature ‘Hamlin’ sweet oranges (Citrus sinensis (L.) Osbeck) were irradiated using light-emitting diodes (LEDs) and ultraviolet (UV) light for six days after harvest. Based on evaluation of the basic ripening parameters of fruits, the contents of soluble sugars, organic acids, and carotenoids were analyzed (in pulps) on the sixth day by high-performance liquid chromatography (HPLC). The results showed that LED and UV irradiation not only accelerated orange ripening but also caused significant changes in the soluble sugar, organic acid, and carotenoid content. Compared with fruit subjected to dark shade (DS) treatment, the total soluble sugar, fructose, and glucose contents increased significantly in UV-treated (UVA, UVB, and UVC) fruits, while the sucrose content increased remarkably in white light, UVB, and UVC-treated fruits (p < 0.05). UV treatment was associated with inducing the largest effect on the total soluble sugar content. Except for UVB, other types of light notably induced an accumulation of the total organic acid content, none but blue light and red light markedly induced citric acid accumulation (p < 0.05). Interestingly, only the red light and dark shade treatments had markedly positive effects in terms of inducing carotenoid accumulation, including the total carotenoid, isolutein, zeaxanthin, lutein, neoxanthin, all-trans-violaxanthin, phytofluene, cis-ζ-carotene, and β-carotene concentrations. Other light treatments had significantly negative effects on carotenoid accumulation (p < 0.05). Therefore, soluble sugar, organic acid, and carotenoid accumulation in sweet oranges vary depending on the levels of UV and LED irradiation. Appropriate light irradiation is a potentially effective way to maintain or improve postharvest fruit quality.

Targeting secondary metabolite biosynthetic genes from the metagenome of the sponge Mycale sp

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
SA Van der Sar ◽  
KM Fisch ◽  
C Gurgui ◽  
TA Nguyen ◽  
J Piel ◽  
...  
Keyword(s):  
Secondary Metabolite ◽  
Biosynthetic Genes
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