Analysis of Chalcone Synthase and Chalcone Isomerase Gene Expression in Pigment Production Pathway at Different Flower Colors of Petunia Hybrida

Keykha, Fatemeh; Bagheri, Abdol Reza; Moshtaghi, Nasrin

doi:10.22067/jcmr.v8i1.50406

Document Type : Research Articles

Authors

¹ Department of Plant Breeding and Biotechnology, College of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran. 2. Department of Plant Biotechnology, College of Agriculture, Jahrom University, Jahrom, Iran.

² Department of Plant Breeding and Biotechnology, College of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran.

https://doi.org/10.22067/jcmr.v8i1.50406

Abstract

Variegation in flower color is commonly observed in many plant species and also occurs on petunia (Petunia hybrida)
as an ornamental plant. Variegated plants are highly valuable in the floricultural market. To gain a global perspective
on genes differentially expressed in variegated petunia flowers, we investigated the expression of chalcone synthase
(chs) and chalcone isomerase (chi) as two essential genes in biosynthesis pathway of pigment production. Also, we
measured the concentration level of total flavonoids, naringenin chalcone and naringenin to evaluate the probably
relationship between the expression profile of chs and chi genes and the concentration of mentioned pigments. The
results indicated that chalcone synthase and chalcone isomerase expression had different profile in different petal
color of Petunia hybrida. Because red flower color in petunia is related to the synthesis of pelargonidin-based (orange
to red) pigments, our results suggest that the low chalcone synthase and chalcone isomerase expression levels in
white petals reduce dihydrokaempferol formation, thereby inhibiting pelargonidin production. In contrast, the high
expression levels of these genes observed in red petals ensure sufficient anthocyanin yields to make flowers red.

Keywords

20.1001.1.20089147.2016.8.1.5.3

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Journal of Cell and Molecular Research

Analysis of Chalcone Synthase and Chalcone Isomerase Gene Expression in Pigment Production Pathway at Different Flower Colors of Petunia Hybrida

References

References

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Volume 8, Issue 1 - Serial Number 15
July 2016
Pages 8-14

Analysis of Chalcone Synthase and Chalcone Isomerase Gene Expression in Pigment Production Pathway at Different Flower Colors of Petunia Hybrida

References

References

Send comment about this article

Volume 8, Issue 1 - Serial Number 15July 2016Pages 8-14

Volume 8, Issue 1 - Serial Number 15
July 2016
Pages 8-14