Dependence of Pepper Fruit Colour on Basic Pigments Ratio and Expression Pattern of Carotenoid and Anthocyanin Biosynthesis Genes

Fruit biochemical analysis of four pepper ( Capsicum annuum L.) cultivars, contrasting in immature and ripe fruit colour, was performed, and chlorophylls, carotenoids and anthocyanins were profiled in the peel and pulp during fruit ripening. It was found that pericarp parts (peel and pulp) differ in...

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Bibliographic Details
Published in:Russian journal of plant physiology 2020-11, Vol.67 (6), p.1054-1062
Main Authors: Filyushin, M. A., Dzhos, E. A., Shchennikova, A. V., Kochieva, E. Z.
Format: Article
Language:English
Subjects:
Anthocyanins
Biochemical analysis
Biomedical and Life Sciences
Biosynthesis
Capsicum annuum
Carotenoids
Chlorophyll
Color
Cultivars
Fruits
Gene expression
Genes
Life Sciences
Peppers
Pericarp
Pigments
Plant Physiology
Plant Sciences
Pulp
Research Papers
Ripening
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Summary:Fruit biochemical analysis of four pepper ( Capsicum annuum L.) cultivars, contrasting in immature and ripe fruit colour, was performed, and chlorophylls, carotenoids and anthocyanins were profiled in the peel and pulp during fruit ripening. It was found that pericarp parts (peel and pulp) differ in pigment composition and accumulation mode. In the same fruit tissues, the expression pattern of structural genes of the carotenoid ( PSY1 , PSY2 , LCYb , and CCS ) and anthocyanin ( CHS , F3  ' 5  ' H , DFR , ANS , and UFGT ) pathways was evaluated. It was shown that carotenoid content positively correlates with the PSY1 , LCYb and CCS expression level in the fruit pulp and with CCS expression level in the fruit peel. In pepper cultivars with purple-coloured immature fruits (Sirenevyj cub, Otello), a positive correlation was shown between the CHS , F3  ' 5  ' H , DFR , ANS , and UFGT expression levels and the anthocyanin content in the peel. Thus, it was shown that in the pepper fruit, peel and pulp colours are regulated independently and determined by the main pigment ratio and the activity of carotenoid and anthocyanin biosynthesis genes.
ISSN:1021-4437
1608-3407
DOI:10.1134/S1021443720050040