Extensive Transcriptome Changes Underlying the Flower Color Intensity Variation in Paeonia ostii

Frontiers in Plant Science
Lexuan GaoYonghong Hu

Abstract

Tree peonies are a group of traditional ornamental plants, especially in East Asia, with Paeonia ostii as one of the most important ancestral species. P. ostii has flowers with varying colors, ranging from nearly white, light pink to deep pink. However, few studies have been done to unravel the molecular mechanisms underlying the flower color intensity variation in plants. Based on comparative analyses of the pigment composition and transcriptomes of P. ostii with different flower color intensities, we found that the anthocyanin concentration was significantly correlated with the flower color intensity in P. ostii. Transcriptome analysis by RNA-Sequencing revealed 7187 genes that were differentially expressed between flowers with different color intensities. Functional enrichment analysis of differentially expressed genes revealed multiple pathways possibly responsible for color intensity variation in P. ostii, including flavonoid biosynthesis, fatty acid oxidation, carbohydrate metabolism, and hormone-mediated signaling. Particularly, while anthocyanin biosynthesis genes showing positive correlations between their expression and anthocyanin concentration in flowers, two transcription factors, PoMYB2 and PoSPL1, seem to negativ...Continue Reading

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Citations

Dec 1, 2019·Planta·Yongming FanXiaonan Yu
Oct 18, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Fernanda Mendes RezendeCláudia Maria Furlan
Dec 21, 2021·Frontiers in Plant Science·Xiaojuan YinYulong Feng

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Datasets Mentioned

BETA
SRR2027822

Methods Mentioned

BETA
Illumina sequencing
PCR
reverse transcription PCR
RNA-Seq

Software Mentioned

Trinity
BLAST
TGICL
ClustalW
BLASTx
SOAPaligner
Blast2GO
MEGA5
Bioconductor topGO

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