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Plants picked in darkness have higher levels of melatonin (sleep hormone) in them than plants picked in daylight according to one study.

• ch4s3 5y ago
  Do you have a citation for that? Google scholar isn't turning anything up for me, and I'm interested.
  • lionsdan 5y ago
    Maybe this? "Melatonin synthesis in rice seedlings in vivo is enhanced at high temperatures and under dark conditions due to increased serotonin N-acetyltransferase and N-acetylserotonin methyltransferase activities" https://doi.org/10.1111/jpi.12111 https://doi.org/10.1111/jpi.12111
    • ch4s3 5y ago
      "The opposite effect occurred during the night, in which the positive effect of darkness on melatonin synthesis was counteracted by the negative effect of a low temperature." Seems suspect.