Metabolome-based discrimination analysis of shallot landraces and bulb onion cultivars associated with differences in the amino acid and flavonoid profiles

Mostafa Abdelrahman, Nur Aeni Ariyanti, Yuji Sawada, Fumitada Tsuji, Sho Hirata, Tran Thi Minh Hang, Mami Okamoto, Yutaka Yamada, Hiroshi Tsugawa, Masami Yokota Hirai, Masayoshi Shigyo

研究成果: Contribution to journalArticle査読

3 被引用数 (Scopus)

抄録

Shallot landraces and varieties are considered an important genetic resource for Allium breeding due to their high contents of several functional metabolites. Aiming to provide new genetic materials for the development of a novel bulb onion cultivar derived from intraspecific hybrids with useful agronomic traits from shallots, the metabolic profiles in the bulbs of 8 Indonesian shallot landraces and 7 short-day and 3 long-day bulb onion cultivars were established using LC–Q-TOF-MS/MS. Principal component analysis, partial least squares discriminant analysis, and dendrogram clustering analysis showed two major groups; group I contained all shallot landraces and group II contained all bulb onion cultivars, indicating that shallots exhibited a distinct metabolic profile in comparison with bulb onions. Variable importance in the projection and Spearman’s rank correlation indicated that free and conjugated amino acids, flavonoids (especially metabolites having flavonol aglycone), and anthocyanins, as well as organic acids, were among the top metabolite variables that were highly associated with shallot landraces. The absolute quantification of 21 amino acids using conventional HPLC analysis showed high contents in shallots rather than in bulb onions. The present study indicated that shallots reprogrammed their metabolism toward a high accumulation of amino acids and flavonoids as an adaptive mechanism in extremely hot tropical environments.

本文言語英語
論文番号5300
ジャーナルMolecules
25
22
DOI
出版ステータス出版済み - 11 2020

All Science Journal Classification (ASJC) codes

  • 分析化学
  • 化学(その他)
  • 分子医療
  • 薬科学
  • 創薬
  • 物理化学および理論化学
  • 有機化学

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