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。586Please respect copyright.PENANAjZD9KCGe1Y
586Please respect copyright.PENANAhqCU14Kdem
上集:https://www.penana.com/article/486079586Please respect copyright.PENANAfO2cHJ0dQc586Please respect copyright.PENANAr5Mft7FYxb
586Please respect copyright.PENANA3HpNQ81IRS
586Please respect copyright.PENANAXxE3fp6v1o
(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。586Please respect copyright.PENANAJXV5LBij4y586Please respect copyright.PENANAbF7DeTyCyX
586Please respect copyright.PENANAfkU6EIDnE5
(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。586Please respect copyright.PENANAKYYkyXb9sh586Please respect copyright.PENANA0J2Sl3jy2G
586Please respect copyright.PENANAPnkvH2WSUv
586Please respect copyright.PENANAxk5BIxfQIQ
(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。586Please respect copyright.PENANA4wkMmbjT3d
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。586Please respect copyright.PENANAxWbAI7uruf
586Please respect copyright.PENANAcYZXnjmxx5586Please respect copyright.PENANA1V3ImGfFr9
586Please respect copyright.PENANA0IrvaulJih
CRISPR技術延伸閱讀:https://www.penana.com/article/465369586Please respect copyright.PENANAQR6Do6V9kA
586Please respect copyright.PENANA25aodUgOjf
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。586Please respect copyright.PENANA9lTIxZCKja
586Please respect copyright.PENANAbt4GaGUYND
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。586Please respect copyright.PENANALzH8Rq7KWv
586Please respect copyright.PENANAJkAjHrMnS1
586Please respect copyright.PENANAyQYaOhgFbU
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。586Please respect copyright.PENANASUtNwhvvG6
586Please respect copyright.PENANAarE48o7EAw
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/toc586Please respect copyright.PENANAldPon3ipYc
586Please respect copyright.PENANAbpfcCogqGW
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。586Please respect copyright.PENANA0pwaAaefDn
586Please respect copyright.PENANASNJb9plX1d
Link:586Please respect copyright.PENANA2pptpIYZbD
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio586Please respect copyright.PENANAv7g2vCZqBt
586Please respect copyright.PENANAWZayjEm5gD
586Please respect copyright.PENANAKiOTjFpeZw
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。
10
ns18.118.207.114da2