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。571Please respect copyright.PENANAB36pSSclGG
571Please respect copyright.PENANAEQENtL2lGu
上集:https://www.penana.com/article/486079571Please respect copyright.PENANAa6TpyqPExh571Please respect copyright.PENANARoPqiDHtXx
571Please respect copyright.PENANAiZr0PlM4Ek
571Please respect copyright.PENANAPchAYsvF4Q
(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。571Please respect copyright.PENANANdg5sNBgOo571Please respect copyright.PENANAZ3OmqZzn4H
571Please respect copyright.PENANAqVQMY7B1Wj
(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。571Please respect copyright.PENANAoubu1B5poT571Please respect copyright.PENANAfZpBDYljB0
571Please respect copyright.PENANAMbVYCHmyWt
571Please respect copyright.PENANAsNuibFXAvj
(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。571Please respect copyright.PENANAVMTNWgxoL9
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。571Please respect copyright.PENANAwk7t4d1RAe
571Please respect copyright.PENANA8qpgp6NvtN571Please respect copyright.PENANAqBs7pDIJhR
571Please respect copyright.PENANAGWTUKpsrWs
CRISPR技術延伸閱讀:https://www.penana.com/article/465369571Please respect copyright.PENANAaFJXt4C2bY
571Please respect copyright.PENANAL9sbnxXxuB
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。571Please respect copyright.PENANAdm1xkXCvc5
571Please respect copyright.PENANANfT9WuRdiX
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。571Please respect copyright.PENANAXhLr2wGA1T
571Please respect copyright.PENANA67jrhyoQ2X
571Please respect copyright.PENANA5z3a7WC1IF
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。571Please respect copyright.PENANAgMF1ru63aU
571Please respect copyright.PENANAZCTEU4g7F0
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/toc571Please respect copyright.PENANAaJQ6hxR33l
571Please respect copyright.PENANA1bodbLyl7K
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。571Please respect copyright.PENANAKnVbbRB7ge
571Please respect copyright.PENANAU9Qmvmc8Hn
Link:571Please respect copyright.PENANAXhThC1EU6R
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio571Please respect copyright.PENANAC0PTzbI4En
571Please respect copyright.PENANAAdcrgnnrkN
571Please respect copyright.PENANAtgOfAmWuaC
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。
10
ns3.138.119.145da2