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。638Please respect copyright.PENANAfYzLnFXS8A
638Please respect copyright.PENANAbJNvl4KLgO
上集:https://www.penana.com/article/486079638Please respect copyright.PENANApQaer2F5Mf638Please respect copyright.PENANAdwGxNpv1c2
638Please respect copyright.PENANACDpj7Hk6zo
638Please respect copyright.PENANAbnUu4KtvY4
(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。638Please respect copyright.PENANAN8YjOkfZ8s638Please respect copyright.PENANAQUV68vUvIj
638Please respect copyright.PENANARG555bEhmA
(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。638Please respect copyright.PENANACeYzO9BkIF638Please respect copyright.PENANAxFPJ5O47os
638Please respect copyright.PENANACCxg0NdaqU
638Please respect copyright.PENANApXvsxD0CX9
(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。638Please respect copyright.PENANAiZE60KIe5d
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。638Please respect copyright.PENANAtWTZKpUj6s
638Please respect copyright.PENANAiYzAHGKs57638Please respect copyright.PENANAXM2OzUKDNc
638Please respect copyright.PENANAxZahU8SDA8
CRISPR技術延伸閱讀:https://www.penana.com/article/465369638Please respect copyright.PENANAgfvrq1gqjB
638Please respect copyright.PENANAOt4mMiS9KL
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。638Please respect copyright.PENANAIZvniTx9xH
638Please respect copyright.PENANAQp5Vw4xiFP
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。638Please respect copyright.PENANA2C9PYGOaS0
638Please respect copyright.PENANAaAs5rhfF7J
638Please respect copyright.PENANAMTLEgFY5ih
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。638Please respect copyright.PENANAUHzAmIPY6q
638Please respect copyright.PENANAcG9IHVmukX
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/toc638Please respect copyright.PENANAj2OvFlPeEV
638Please respect copyright.PENANAzTm6k74Kfc
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。638Please respect copyright.PENANAJlHji3HjLa
638Please respect copyright.PENANAr7RUHHuXhO
Link:638Please respect copyright.PENANANDXSCcpgr5
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio638Please respect copyright.PENANAU9nOpgZeKx
638Please respect copyright.PENANAJGIpTRq9dX
638Please respect copyright.PENANABDQqx2uXWr
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。
10
ns216.73.216.94da2