{"id":12939,"date":"2021-05-25T15:50:33","date_gmt":"2021-05-25T18:50:33","guid":{"rendered":"https:\/\/mindthegraph.com\/blog\/?p=12939"},"modified":"2023-01-05T14:33:42","modified_gmt":"2023-01-05T17:33:42","slug":"magnetic-revolution-venus-flytrap-action-potential","status":"publish","type":"post","link":"https:\/\/mindthegraph.com\/blog\/da\/magnetisk-revolution-venus-flytrap-action-potentiale\/","title":{"rendered":"Den magnetiske revolution: Venusfluefangerens aktionspotentiale"},"content":{"rendered":"

Dionaea muscipula, popul\u00e6rt kendt som Venus Fluefanger, er en k\u00f8d\u00e6dende plante, der fanger sit bytte ved hj\u00e6lp af modificerede blade. Virkningsmekanismen omfatter en hurtig bev\u00e6gelse af bladet, n\u00e5r det lille bytte kommer i kontakt med det. Det lukker sig \u00f8jeblikkeligt for en senere ford\u00f8jelsesproces. Venusfluefangerens blad best\u00e5r af ber\u00f8ringsf\u00f8lsomme h\u00e5r eller triggerh\u00e5r, der hj\u00e6lper med at signalere f\u00e6ldning gennem natriumaktiveret aktionspotentiale.<\/p>\n\n\n\n

\"flere<\/a>
Billedkilde: Unsplash<\/a> af Dmitry Makarov<\/a>.<\/figcaption><\/figure>\n\n\n\n

Aktionspotentialet er et middel til cellesignalering, der finder sted, n\u00e5r de positivt ladede ioner kommer ind i cellerne og f\u00e5r et elektrisk milj\u00f8 i cellemembranen til hurtigt at \u00e6ndre sig for at n\u00e5 t\u00e6rskelgr\u00e6nsen. Dette sender igen elektriske signaler til den anden celle for at f\u00e5 en aktiv respons. <\/p>\n\n\n\n

Signalet er s\u00e5 hurtigt, at det fanger byttet i l\u00f8bet af f\u00e5 sekunder. <\/p>\n\n\n\n

Byttet ford\u00f8jes af enzymer, der frigives af kirtler p\u00e5 bladets foring. De n\u00f8dvendige n\u00e6ringsstoffer absorberes af planten for at forts\u00e6tte handlingen.<\/p>\n\n\n\n

\u00c5rsagen, observation og eksperimentering:<\/strong><\/p>\n\n\n\n

Ligesom den menneskelige hjerne er ansvarlig for sp\u00e6ndings\u00e6ndringer i bestemte regioner, der viser sig som elektrisk aktivitet i form af aktionspotentialer, der bev\u00e6ger sig gennem nerveceller. Disse aktiviteter kan estimeres ved hj\u00e6lp af teknikker som magnetoencefalografi, elektroencefalografi og magnetisk resonansbilleddannelse for at analysere potentielle lidelser og diagnosticere dem.<\/p>\n\n\n\n

En gruppe tv\u00e6rfaglige forskere udstillede Venusfluef\u00e6ldens unikke magnetiske aktivitet i forbindelse med dens elektriske signalering p\u00e5 samme m\u00e5de som hos mennesker.<\/p>\n\n\n\n

Venus' fluefangermekanisme er ogs\u00e5 baseret p\u00e5 det aktionspotentiale, der resulterer i elektriske signaler i systemet.<\/p>\n\n\n\n

\"En<\/a>
Billedkilde: Unsplash<\/a> af Clint Patterson<\/a><\/figcaption><\/figure>\n\n\n\n

Venusfluefangerens aktionspotentiale kan udl\u00f8ses af varme, kulde, vandindhold og andre mekaniske eller milj\u00f8m\u00e6ssige faktorer. Forskerne brugte varme til at fremkalde aktionspotentialet for at m\u00e5le magnetfeltet, da de bem\u00e6rkede, at temperaturen p\u00e5virkede amplituden af aktionspotentialet.<\/p>\n\n\n\n

De brugte atomare magnetometre til at m\u00e5le den biomagnetisme, der er forbundet med elektrisk aktivitet. De anvendte sensorer var glasceller, som var fyldt med dampe af alkaliatomer, der reagerede p\u00e5 \u00e6ndringerne i den biomagnetiske aktivitet.<\/p>\n\n\n\n

Magnetometrene kr\u00e6ver et magnetisk afsk\u00e6rmet milj\u00f8 for at kunne udf\u00f8re m\u00e5lingen. Det er en sikkerhedsforanstaltning for kun at m\u00e5le den flercellede plantes magnetiske aktivitet. Dette v\u00e6rkt\u00f8j er meget effektivt og foretr\u00e6kkes frem for superledende quantum interface device magnetometre (SQID), da de kan miniaturiseres for at opn\u00e5 optimal rumlig opl\u00f8sning til m\u00e5ling af data.<\/p>\n\n\n\n

Det magnetiske signal fra Venus' fluefanger, som forskerne registrerede, havde en amplitude p\u00e5 omkring 0,5 picotesla, hvilket er langt svagere end jordens magnetfelt. <\/p>\n\n\n\n

Dette kunne konkludere nytten af den biomagnetiske aktivitet, som kunne hj\u00e6lpe i den ikke-invasive teknik til p\u00e5visning af stress.<\/p>\n\n\n\n

Afgr\u00f8deforbedring er det ultimative m\u00e5l for at rette op p\u00e5 de virkninger, der skyldes milj\u00f8faktorer som temperatur\u00e6ndringer, kemiske p\u00e5virkninger og ogs\u00e5 angreb fra plante\u00e6dere eller insekter ved at registrere den elektromagnetiske feedback. Kudos til holdet for at have fundet det molekyl\u00e6re grundlag for biomagnetisme i planter.<\/p>\n\n\n\n

Hvis du vil vide mere om deres forskning, kan du tjekke referencen nedenfor, og hvis du vil l\u00e6se mere om aktionspotentialet, skal du klikke p\u00e5 her<\/a>.<\/p>\n\n\n\n

Fabricant, A., Iwata, G.Z., Scherzer, S. et al.<\/em> Aktionspotentialer inducerer biomagnetiske felter i k\u00f8d\u00e6dende Venus flytrap-planter. Sci Rep<\/em> 11, 1438 (2021). https:\/\/doi.org\/10.1038\/s41598-021-81114-w<\/a><\/p>\n\n\n\n

<\/p>","protected":false},"excerpt":{"rendered":"

Dionaea muscipula, popul\u00e6rt kendt som Venus Fluefanger, er en k\u00f8d\u00e6dende plante, der fanger sit bytte ved hj\u00e6lp af modificerede blade. Virkningsmekanismen omfatter en hurtig bev\u00e6gelse af bladet, n\u00e5r det lille bytte kommer i kontakt med det. Det lukker sig \u00f8jeblikkeligt for en senere ford\u00f8jelsesproces. Venusfluefangerens blad best\u00e5r af ber\u00f8ringsf\u00f8lsomme [...]<\/p>","protected":false},"author":18,"featured_media":12945,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[959,28],"tags":[554],"yoast_head":"\nThe Magnetic Revolution: The Venus Flytrap Action Potential - MTG<\/title>\n<meta name=\"description\" content=\"A group of interdisciplinary researchers exhibited the unique magnetic activity of the Venus flytrap in association with its electrical signaling.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mindthegraph.com\/blog\/da\/magnetisk-revolution-venus-flytrap-action-potentiale\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Magnetic Revolution: The Venus Flytrap Action Potential\" \/>\n<meta property=\"og:description\" content=\"A group of interdisciplinary researchers exhibited the unique magnetic activity of the Venus flytrap in association with its electrical signaling.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/mindthegraph.com\/blog\/da\/magnetisk-revolution-venus-flytrap-action-potentiale\/\" \/>\n<meta property=\"og:site_name\" content=\"Mind the Graph Blog\" \/>\n<meta property=\"article:published_time\" content=\"2021-05-25T18:50:33+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-01-05T17:33:42+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2021\/05\/post-the-magnetic-revolution-facebook.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"628\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Bruna Soldera\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"The Magnetic Revolution: The Venus Flytrap Action Potential\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2021\/05\/post-the-magnetic-revolution-twitter.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Bruna Soldera\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"The Magnetic Revolution: The Venus Flytrap Action Potential - 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