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Genomic Survey, Transcriptome, and Metabolome Analysis of Apocynum venetum and Apocynum hendersonii to Reveal Major Flavonoid Biosynthesis Pathways.


ABSTRACT: Apocynum plants, especially A. venetum and A. hendersonii, are rich in flavonoids. In the present study, a whole genome survey of the two species was initially carried out to optimize the flavonoid biosynthesis-correlated gene mining. Then, the metabolome and transcriptome analyses were combined to elucidate the flavonoid biosynthesis pathways. Both species have small genome sizes of 232.80 Mb (A. venetum) and 233.74 Mb (A. hendersonii) and showed similar metabolite profiles with flavonols being the main differentiated flavonoids between the two specie. Positive correlation of gene expression levels (flavonone-3 hydroxylase, anthocyanidin reductase, and flavonoid 3-O-glucosyltransferase) and total flavonoid content were observed. The contents of quercitrin, hyperoside, and total anthocyanin in A. venetum were found to be much higher than in A. hendersonii, and such was thought to be the reason for the morphological difference in color of A. venetum and A. hendersonii. This study provides valuable genomic and metabolome information for understanding of A. venetum and A. hendersonii, and lays a foundation for elucidating Apocynum genus plant flavonoid biosynthesis.

SUBMITTER: Gao G 

PROVIDER: S-EPMC6950674 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature

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Genomic Survey, Transcriptome, and Metabolome Analysis of <i>Apocynum venetum</i> and <i>Apocynum hendersonii</i> to Reveal Major Flavonoid Biosynthesis Pathways.

Gao Gang G   Chen Ping P   Chen Jikang J   Chen Kunmei K   Wang Xiaofei X   Abubakar Aminu Shehu AS   Liu Ning N   Yu Chunming C   Zhu Aiguo A  

Metabolites 20191205 12


<i>Apocynum</i> plants, especially <i>A. venetum</i> and <i>A. hendersonii,</i> are rich in flavonoids. In the present study, a whole genome survey of the two species was initially carried out to optimize the flavonoid biosynthesis-correlated gene mining. Then, the metabolome and transcriptome analyses were combined to elucidate the flavonoid biosynthesis pathways. Both species have small genome sizes of 232.80 Mb (<i>A. venetum</i>) and 233.74 Mb (<i>A. hendersonii</i>) and showed similar metab  ...[more]

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