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Induction of Glucoraphasatin Biosynthesis Genes by MYB29 in Radish (Raphanus sativus L.) Roots.


ABSTRACT: Glucoraphasatin (GRH) is a specific aliphatic glucosinolate (GSL) that is only abundant in radish (Raphanus sativus L.). The gene expression regulating GRH biosynthesis in radish is still poorly understood. We employed a total of 59 radish accessions to analyze GSL profiles and showed that GRH was specific and predominant among the aliphatic GSLs in radish roots. We selected five accessions roots with high, moderate and low GSL biosynthesis, respectively, to conduct a comparative transcriptome analysis and the qRT-PCR of the biosynthesis genes for aliphatic GSLs. In this study, among all the accessions tested, roots with the accession RA157-74 had a high GRH content and showed a significant expression of the aliphatic GSL biosynthesis genes. We defined the genes involved in the GRH biosynthesis process and found that they were regulated by a transcription factor (RSG00789) at the MYB29 locus in radish roots. We found 13 aliphatic GSL biosynthesis genes regulated by the RSG00789 gene in the GRH biosynthesis pathway.

SUBMITTER: Kang JN 

PROVIDER: S-EPMC7461053 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature

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Induction of Glucoraphasatin Biosynthesis Genes by MYB29 in Radish (<i>Raphanus sativus</i> L.) Roots.

Kang Ji-Nam JN   Won So Youn SY   Seo Mi-Suk MS   Lee Jeongyeo J   Lee Si Myung SM   Kwon Soo-Jin SJ   Kim Jung Sun JS  

International journal of molecular sciences 20200810 16


Glucoraphasatin (GRH) is a specific aliphatic glucosinolate (GSL) that is only abundant in radish (<i>Raphanus sativus</i> L.). The gene expression regulating GRH biosynthesis in radish is still poorly understood. We employed a total of 59 radish accessions to analyze GSL profiles and showed that GRH was specific and predominant among the aliphatic GSLs in radish roots. We selected five accessions roots with high, moderate and low GSL biosynthesis, respectively, to conduct a comparative transcri  ...[more]

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