Combined analysis of the transcriptome and metabolome provides insights into the fleshy stem expansion mechanism in stem lettuce.

ABSTRACT: As a stem variety of lettuce, the fleshy stem is the main product organ of stem lettuce. The molecular mechanism of fleshy stem expansion in stem lettuce is a complex biological process. In the study, the material accumulation, gene expression, and morphogenesis during fleshy stem expansion process were analyzed by the comparative analysis of metabolome, transcriptome and the anatomical studies. The anatomical studies showed that the occurrence and activity of vascular cambium mainly led to the development of fleshy stems; and the volume of pith cells gradually increased and arranged tightly during the expansion process. A total of 822 differential metabolites and 9,383 differentially expressed genes (DEGs) were identified by the metabolomics and transcriptomics analyses, respectively. The

SUBMITTER: Huang Y 

PROVIDER: S-EPMC9798005 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature