Effects of nitrogen levels on gene expression and amino acid metabolism in Welsh onion

Welsh onion constitutes an important crop due to its benefits in traditional medicine. Nitrogen is an important nutrient for plant growth and yield; however, little is known about its influence on the mechanisms of Welsh onion regulation genes. In this study, we introduced a gene expression and amin...

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Published inBMC genomics Vol. 22; no. 1; pp. 1 - 803
Main Authors Zhao, Chen, Ma, Guanchu, Zhou, Lin, Zhang, Song, Su, Le, Sun, Xin, Borrás-Hidalgo, Orlando, Li, Kunlun, Yue, Qiulin, Zhao, Lin
Format Journal Article
LanguageEnglish
Published London BioMed Central Ltd 07.11.2021
BioMed Central
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Summary:Welsh onion constitutes an important crop due to its benefits in traditional medicine. Nitrogen is an important nutrient for plant growth and yield; however, little is known about its influence on the mechanisms of Welsh onion regulation genes. In this study, we introduced a gene expression and amino acid analysis of Welsh onion treated with different concentrations of nitrogen (N0, N1, and N2 at 0 kg/ha, 130 kg/ha, and 260 kg/ha, respectively). Approximately 1,665 genes were differentially regulated with different concentrations of nitrogen. Gene ontology enrichment analysis revealed that the genes involved in metabolic processes, protein biosynthesis, and transportation of amino acids were highly represented. KEGG analysis indicated that the pathways were related to amino acid metabolism, cysteine, beta-alanine, arginine, proline, and glutathione. Differential gene expression in response to varying nitrogen concentrations resulted in different amino acid content. A close relationship between gene expression and the content of amino acids was observed. This work examined the effects of nitrogen on gene expression and amino acid synthesis and provides important evidence on the efficient use of nitrogen in Welsh onion.
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ISSN:1471-2164
1471-2164
DOI:10.1186/s12864-021-08130-y