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Transcriptomic and Metabolomic Analyses Reveal Differences in Flavonoid Pathway Gene Expression Profiles between Two Dendrobium Varieties during Vernalization.
Shu, Wenbo; Shi, Meirong; Zhang, Qiqi; Xie, Wenyu; Chu, Liwei; Qiu, Mingxuan; Li, Linyan; Zeng, Zhixin; Han, Lei; Sun, Zhenyuan.
Afiliação
  • Shu W; National Key Laboratory for Germplasm Innovation and Utilization Crops, College of Horticulture and Forestry, Huazhong Agriculture University, Wuhan 430070, China.
  • Shi M; Key Laboratory of Tree Breeding and Cultivation of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China.
  • Zhang Q; Key Laboratory of Tree Breeding and Cultivation of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China.
  • Xie W; National Key Laboratory for Germplasm Innovation and Utilization Crops, College of Horticulture and Forestry, Huazhong Agriculture University, Wuhan 430070, China.
  • Chu L; National Key Laboratory for Germplasm Innovation and Utilization Crops, College of Horticulture and Forestry, Huazhong Agriculture University, Wuhan 430070, China.
  • Qiu M; Key Laboratory of Tree Breeding and Cultivation of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China.
  • Li L; National Key Laboratory for Germplasm Innovation and Utilization Crops, College of Horticulture and Forestry, Huazhong Agriculture University, Wuhan 430070, China.
  • Zeng Z; National Key Laboratory for Germplasm Innovation and Utilization Crops, College of Horticulture and Forestry, Huazhong Agriculture University, Wuhan 430070, China.
  • Han L; National Key Laboratory for Germplasm Innovation and Utilization Crops, College of Horticulture and Forestry, Huazhong Agriculture University, Wuhan 430070, China.
  • Sun Z; Key Laboratory of Tree Breeding and Cultivation of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China.
Int J Mol Sci ; 24(13)2023 Jul 03.
Article em En | MEDLINE | ID: mdl-37446217
Dendrobium (Orchidaceae, Epidendoideae) plants have flowers with a wide variety of colors that persist for a long period throughout the year. The yellow coloration of Dendrobium flowers is mainly determined by the flavonol pathway and the flavone pathway, but the relevant biosynthesis mechanisms during vernalization remain unclear. To explore the similarities and differences in flavonoid biosynthesis in different tissues during vernalization, we selected two species of Dendrobium for a flower color study: Dendrobium capillipes Rchb (which has yellow flowers) and Dendrobium nobile Lindl (which has white flowers). We collected a total of 36 samples from six tissue types and both Dendrobium species during vernalization and subjected the samples to metabolic profiling and transcriptome sequencing. A total of 31,504 differentially expressed genes (DEGs) were identified between different tissues of the two Dendrobium species by transcriptomic analysis. However, many differentially accumulated metabolites (DAMs) and DEGs were enriched not only in the general pathway of "flavonoid biosynthesis" but also in multiple subpathways of "flavone and flavonol biosynthesis". According to a combined transcriptome and metabolome analysis, Putrescine hydroxycinnamoyl transferase 1 (LOC110093422) may be the main gene responsible for the differences in flavonoid accumulation during vernalization, which is closely associated with yellow flowers. Taken together, the results of our study preliminarily revealed the metabolites responsible for and the key genes regulating flavonoid biosynthesis during vernalization. These results provide a basis for the further study of the molecular mechanism of flavonoid synthesis during vernalization.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Dendrobium / Flavonas Idioma: En Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Dendrobium / Flavonas Idioma: En Ano de publicação: 2023 Tipo de documento: Article