上集提及了白蘑菇表面的啡點是由Brown Blotch Disease而起,今集將會講及白蘑菇因為氧化作用而變成啡色的過程。635Please respect copyright.PENANArs8VpqUMjr
635Please respect copyright.PENANAKZgdI9lFIT
上集:https://www.penana.com/article/486079635Please respect copyright.PENANAmcM2u9fivW635Please respect copyright.PENANAXbwoCQjGsB
635Please respect copyright.PENANAXHRHzr0A25
635Please respect copyright.PENANAe4F52VDXe2
(圖3)正常情況下,名為PPO的酵素將會處於名為Plastid的位置內,與蘑菇裡頭的Phenolic Substrate天隔一方,河水不犯井水。635Please respect copyright.PENANAqqeKWatLYZ635Please respect copyright.PENANAMEUFjl69dy
635Please respect copyright.PENANAZeDe6IkyA2
(圖4)而在物理性的撞擊或其他作用底下,Plastid結構被受破壞,PPO酵素便與蘑菇裡頭的Phenolic Substrate接觸,透過氧氣的協助下產生一系列的化學反應,最終形成啡黑色物質Melanin,導致白蘑菇變成啡蘑菇。635Please respect copyright.PENANAFc12hSlk3H635Please respect copyright.PENANAIV1MwQyYAA
635Please respect copyright.PENANAnTz6xvg1jn
635Please respect copyright.PENANAgVXQXYHoup
(圖5)白蘑菇因氧化作用而變成啡色並不會讓蘑菇變成不得食用。635Please respect copyright.PENANA8jLZID6vee
移居到美國賓夕法尼亞州立大學的中國科學家Yinong Yang已成功使用CRISPR基因編輯技術將蘑菇的PPO基因剔走,製作不會變啡的白蘑菇,主要為作美觀用途。635Please respect copyright.PENANAuZE6Y2Ji3K
635Please respect copyright.PENANAPMgRVJ3cMO635Please respect copyright.PENANALoCYwkAFx8
635Please respect copyright.PENANATFuibj8Qxn
CRISPR技術延伸閱讀:https://www.penana.com/article/465369635Please respect copyright.PENANA5lJXCzaXqa
635Please respect copyright.PENANA7dsMbZCPo6
只要得到法律的允許,這些不會變啡的白蘑菇便能進入商業市場。635Please respect copyright.PENANATeVrm0OUFc
635Please respect copyright.PENANAeC1SfSL3Bn
類近的基因改造產品,已投身市場標榜不會變啡的蘋果Acratic Apple,原理同樣亦是針對PPO基因而成,但箇中並沒有用上CRISPR手段。635Please respect copyright.PENANAQdRefomFZ6
635Please respect copyright.PENANAeDB19HpkQS
635Please respect copyright.PENANAenk9hehtZW
如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。635Please respect copyright.PENANAkypKrJtV4R
635Please respect copyright.PENANAgxuFVTD32X
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc635Please respect copyright.PENANAcrWkvUut9X
635Please respect copyright.PENANA4efZlETljQ
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。635Please respect copyright.PENANAyCaY1dJsLY
635Please respect copyright.PENANACJkFv8h4Ja
Link:635Please respect copyright.PENANA4Vov4Hntw4
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio635Please respect copyright.PENANAMbxKDRGsoZ
635Please respect copyright.PENANAui1kMhn8I9
635Please respect copyright.PENANAs10ZzNlPOk
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。
10
ns216.73.216.203da2