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)。1133Please respect copyright.PENANAZIZd7S1FdD
1133Please respect copyright.PENANA35Tpi8tlnF
1133Please respect copyright.PENANAj4MdPEjY2i
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。1133Please respect copyright.PENANAUEAv8o7hcq
1133Please respect copyright.PENANAh6inA0V8kf
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。1133Please respect copyright.PENANApikkoC134t
1133Please respect copyright.PENANAELl8aDQXtD
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。1133Please respect copyright.PENANA1rvCq0reLy
1133Please respect copyright.PENANAEDIAMI49Ci
1133Please respect copyright.PENANAZtZTAhRXun
1133Please respect copyright.PENANA0KWChW1mvK
(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。1133Please respect copyright.PENANAc1hMxL7grh
1133Please respect copyright.PENANAmta0cB2wKi
(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。1133Please respect copyright.PENANA9Pr9yyuBuX
1133Please respect copyright.PENANAcKtNmKZ7ve
1133Please respect copyright.PENANABfUBN3FjIH
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。1133Please respect copyright.PENANAYispt3PBg9
1133Please respect copyright.PENANANKwPAcLSyG
(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。1133Please respect copyright.PENANAJGZygrhCsH
1133Please respect copyright.PENANAvgVjhzzal6
1133Please respect copyright.PENANAxrfGn9Xvqz
1133Please respect copyright.PENANAcSDYwn2p2E
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。1133Please respect copyright.PENANA0kBXE8gQUd
1133Please respect copyright.PENANARpBDWrcoGa
「同類」擊倒同類,滲透繼而分化的破壞力,絕對是不容忽視的。1133Please respect copyright.PENANAJDRN1JUgbv
1133Please respect copyright.PENANA4CcCjalDHT
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。1133Please respect copyright.PENANAekVVHU5mbw
1133Please respect copyright.PENANAztAZqu5K9G
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/toc1133Please respect copyright.PENANAJrltAtZ2b4
1133Please respect copyright.PENANAnDgP8a0vN1
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。1133Please respect copyright.PENANAUWyCWBaVCa
1133Please respect copyright.PENANAxFMUSZOE6J
Link:1133Please respect copyright.PENANANj8jeUwgW7
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1133Please respect copyright.PENANAXVLEeUJPMW
1133Please respect copyright.PENANAYIXOQpnF6H
1133Please respect copyright.PENANAWSNvIQ0MEe
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。1133Please respect copyright.PENANAmE5YfogiXU
1133Please respect copyright.PENANAcmiS3xmuJ4
1133Please respect copyright.PENANAEUehO2Tffs
Ref1:https://academic.oup.com/femsre/article/23/5/591/5332401133Please respect copyright.PENANAAtwt0yo5J5
Ref2:https://pubmed.ncbi.nlm.nih.gov/32868430/1133Please respect copyright.PENANAVTepocFEXR