論文

2012年2月1日

Accumulation mechanism of γ-aminobutyric acid in tomatoes (Solanum lycopersicum L.) under low O2 with and without CO2

Journal of agricultural and food chemistry
  • Mae, Nobukazu
  • ,
  • Makino, Yoshio
  • ,
  • Oshita, Seiichi
  • ,
  • Kawagoe, Yoshinori
  • ,
  • Tanaka, Atsushi
  • ,
  • Aoki, Koh
  • ,
  • Kurabayashi, Atsushi
  • ,
  • Akihiro, Takashi
  • ,
  • Akama, Kazuhito
  • ,
  • Koike, Satoshi
  • ,
  • Takayama, Mariko
  • ,
  • Matsukura, Chiaki
  • ,
  • Ezura, Hiroshi

60
4
開始ページ
1013
終了ページ
1019
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/jf2046812

The storage of ripe tomatoes in low-O(2) conditions with and without CO(2) promotes γ-aminobutyric acid (GABA) accumulation. The activities of glutamate decarboxylase (GAD) and α-ketoglutarate-dependent GABA transaminase (GABA-TK) were higher and lower, respectively, following storage under hypoxic (2.4 or 3.5% O(2)) or adjusted aerobic (11% O(2)) conditions compared to the activities in air for 7 days at 25 °C. GAD activity was consistent with the expression level of mRNA for GAD. The GABA concentration in tomatoes stored under hypoxic conditions and adjusted aerobic conditions was 60-90% higher than that when they are stored in air on the same day. These results demonstrate that upregulation of GAD activity and downregulation of GABA-TK activity cause GABA accumulation in tomatoes stored under low-O(2) conditions. Meanwhile, the effect of CO(2) on GABA accumulation is probably minimal.

リンク情報
DOI
https://doi.org/10.1021/jf2046812
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/22224492

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