科普專欄–薯不揀單 - 深入淺出–白色蘑菇上的啡點

白蘑菇上的啡點，大多是由名為P. tolaasii 的細菌引起，學名為Brown Blotch Disease(Ref1)。1354Please respect copyright.ＰＥＮＡＮＡ9DqXNKAUT2
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雖然P. tolaasii 細菌不會使人染病，但普遍大多數消費者也不會購買帶有啡點的蘑菇，只會買下白色乾淨且有彈性的白蘑菇。1354Please respect copyright.ＰＥＮＡＮＡ7hEvjqPLVa
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基於Brown Blotch Disease的傳染性非常之高的關係，當有一顆蘑菇受到感染，其後波及的面積將會非常巨大，讓農夫們蒙受損失。1354Please respect copyright.ＰＥＮＡＮＡcy5rOS3p6i
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而這種細菌同時亦會波及士多啤梨椰菜花等農作物，故此絕對不能忽視。1354Please respect copyright.ＰＥＮＡＮＡ0eM9wHU9nt
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（圖2）已知的是，P. tolaasii 細菌會產生名為tolaasins的物質，在白蘑菇表面上產生微孔，導致啡黑色的圓點出現。1354Please respect copyright.ＰＥＮＡＮＡI4kbAcLCTW
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（圖3）近日有科學家發表文章（Ref2)，證實另一種類的細菌M. tolaasinivorans /M. lacteus能將環狀結構的tolaasins轉變成直線結構。1354Please respect copyright.ＰＥＮＡＮＡ9P8DFrf3kJ
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而最為重要的是，直線結構的tolaasins再也沒有能力在白蘑菇上產生啡點。1354Please respect copyright.ＰＥＮＡＮＡr2QDOmAeIa
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（圖4）他們亦發現，M.tolaasinivorans /M. Lacteus 同時亦能破壞P. tolaasii裡頭一隻名為pseudodesmin物質的部份結構，得以減慢P. tolaasii的生長速度。1354Please respect copyright.ＰＥＮＡＮＡdh5OtPqyL7
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此項發現除了揭示可以利用細菌擊倒細菌此等手法保護農作物的手法外，同時亦指引科學家們可以研究出針對破壞該兩種物質的化學物，作為另一種保護白蘑菇等農作物外觀的手段。1354Please respect copyright.ＰＥＮＡＮＡukSdL7xcj4
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「同類」擊倒同類，滲透繼而分化的破壞力，絕對是不容忽視的。1354Please respect copyright.ＰＥＮＡＮＡxlJEO0ALeq
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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。1354Please respect copyright.ＰＥＮＡＮＡqIOh1Y7PIy
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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/toc1354Please respect copyright.ＰＥＮＡＮＡDmaiCpp7Pa
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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。1354Please respect copyright.ＰＥＮＡＮＡZtvWZUJPXk
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Link:1354Please respect copyright.ＰＥＮＡＮＡy75w5yRDQz
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1354Please respect copyright.ＰＥＮＡＮＡgN2n8HR8JD
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有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。1354Please respect copyright.ＰＥＮＡＮＡkUw6SXtgrK
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Ref1:https://academic.oup.com/femsre/article/23/5/591/5332401354Please respect copyright.ＰＥＮＡＮＡUoxn0nRc79
Ref2:https://pubmed.ncbi.nlm.nih.gov/32868430/1354Please respect copyright.ＰＥＮＡＮＡRTgMaZOqTt

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