Comparison of Metabolic Profiling of Inflorescences Between Landsberg and Columbia, and Meiosis-Defective Mutants by H-NMR Spectroscopy.

UNLABELLED

With the rapid development of omics technologies during the last several decades, genomics, transcriptomics, and proteomics have been extensively used to characterize gene or protein functions in many organisms at the cell or tissue level. However, metabolomics has not been conducted in reproductive organs, with a focus on meiosis in plants. In this study, we adopted a nuclear magnetic resonance (NMR)-based metabolomics approach to reveal the metabolic profile of inflorescences from two accessions, Columbia (Col) and Landsberg (L), and several sterile mutants caused by meiosis defects. We identified 68 dominant metabolites in the samples. Col and L displayed distinct metabolite profiles. Interestingly, mutants with similar meiotic defects, such as , and exhibited similar alterations in metabolites, including upregulation of energy metabolites and promotion of compounds related to maintenance of genomic stability, cytoplasmic homeostasis, and membrane integrity. The collective data reveal distinct changes in metabolites in inflorescences between the Col and L wild type accessions. NMR-based metabolomics could be an effective tool for molecular phenotyping in studies of aspects of plant reproductive development such as meiosis.

SUPPLEMENTARY INFORMATION

The online version contains supplementary material available at 10.1007/s43657-021-00012-3.