{"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\/sv_se\/magnetisk-revolution-venus-flytrap-verkan-potential\/","title":{"rendered":"Den magnetiska revolutionen: Venus flugf\u00e4lla handlingspotential"},"content":{"rendered":"

Dionaea muscipula, allm\u00e4nt k\u00e4nd som Venus flugf\u00e4lla, \u00e4r en k\u00f6tt\u00e4tande v\u00e4xt som f\u00e5ngar sitt byte genom modifierade blad. Verkningsmekanismen innefattar bladets snabba r\u00f6relse n\u00e4r det lilla bytet kommer i kontakt med det. Det st\u00e4ngs omedelbart f\u00f6r en senare matsm\u00e4ltningsprocess. Venus flugf\u00e4llas blad best\u00e5r av ber\u00f6ringsk\u00e4nsligt h\u00e5r eller triggerh\u00e5r som hj\u00e4lper till att signalera f\u00f6r f\u00e5ngst genom natriumaktiverad aktionspotential.<\/p>\n\n\n\n

\"flera<\/a>
Bildk\u00e4lla: Unsplash<\/a> av Dmitrij Makarov<\/a>.<\/figcaption><\/figure>\n\n\n\n

Aktionspotentialen \u00e4r ett s\u00e4tt att signalera till cellerna som uppst\u00e5r n\u00e4r positivt laddade joner kommer in i cellerna och orsakar en snabb f\u00f6r\u00e4ndring av den elektriska milj\u00f6n i cellmembranet s\u00e5 att tr\u00f6skelv\u00e4rdet n\u00e5s. Detta s\u00e4nder i sin tur elektriska signaler till den andra cellen f\u00f6r en aktiv respons. <\/p>\n\n\n\n

Signalen \u00e4r s\u00e5 snabb att den f\u00e5ngar bytet inom n\u00e5gra sekunder. <\/p>\n\n\n\n

Bytet sm\u00e4lts av enzymer som fris\u00e4tts av k\u00f6rtlar p\u00e5 bladets insida. De n\u00e4rings\u00e4mnen som kr\u00e4vs absorberas av v\u00e4xten f\u00f6r att forts\u00e4tta handlingen.<\/p>\n\n\n\n

Anledningen, observation och experiment:<\/strong><\/p>\n\n\n\n

Precis som den m\u00e4nskliga hj\u00e4rnan ansvarar f\u00f6r sp\u00e4nningsf\u00f6r\u00e4ndringar i vissa regioner som framtr\u00e4der som elektrisk aktivitet i form av aktionspotentialer som f\u00e4rdas genom nervceller. Dessa aktiviteter kan uppskattas med hj\u00e4lp av tekniker som magnetencefalografi, elektroencefalografi och magnetisk resonanstomografi f\u00f6r att analysera potentiella st\u00f6rningar och diagnostisera dem.<\/p>\n\n\n\n

En grupp tv\u00e4rvetenskapliga forskare visade Venus flugf\u00e4llas unika magnetiska aktivitet i samband med dess elektriska signalering p\u00e5 ett liknande s\u00e4tt som hos m\u00e4nniskor.<\/p>\n\n\n\n

Venus flugf\u00e4llas mekanism bygger ocks\u00e5 p\u00e5 aktionspotentialen som resulterar i elektriska signaler i systemet.<\/p>\n\n\n\n

\"En<\/a>
Bildk\u00e4lla: Unsplash<\/a> av Clint Patterson<\/a><\/figcaption><\/figure>\n\n\n\n

Venus flugf\u00e4llas aktionspotential kan utl\u00f6sas av v\u00e4rme, kyla, vattenhalt och andra mekaniska eller milj\u00f6m\u00e4ssiga faktorer. Forskarna anv\u00e4nde v\u00e4rme f\u00f6r att framkalla aktionspotential och m\u00e4ta magnetf\u00e4ltet eftersom de m\u00e4rkte att temperaturen p\u00e5verkade aktionspotentialens amplitud.<\/p>\n\n\n\n

De anv\u00e4nde atom\u00e4ra magnetometrar f\u00f6r att m\u00e4ta biomagnetismen i samband med elektrisk aktivitet. De sensorer som anv\u00e4ndes var glasceller som var fyllda med \u00e5ngor av alkaliatomer som reagerade p\u00e5 f\u00f6r\u00e4ndringar i den biomagnetiska aktiviteten.<\/p>\n\n\n\n

Magnetometrarna kr\u00e4ver en magnetiskt avsk\u00e4rmad milj\u00f6 f\u00f6r att utf\u00f6ra m\u00e4tningen. Detta \u00e4r en f\u00f6rsiktighets\u00e5tg\u00e4rd f\u00f6r att bara m\u00e4ta den magnetiska aktiviteten hos den flercelliga v\u00e4xten. Detta verktyg \u00e4r mycket effektivt och f\u00f6redras framf\u00f6r supraledande SQID-magnetometrar (quantum interface device) eftersom de kan miniatyriseras f\u00f6r optimal rumslig uppl\u00f6sning vid m\u00e4tning av data.<\/p>\n\n\n\n

Den magnetiska signal som forskarna registrerade fr\u00e5n Venus flugf\u00e4lla hade en amplitud p\u00e5 0,5 pikotesla, vilket \u00e4r mycket svagare \u00e4n jordens magnetf\u00e4lt. <\/p>\n\n\n\n

Detta tyder p\u00e5 att den biomagnetiska aktiviteten \u00e4r anv\u00e4ndbar och kan bidra till en icke-invasiv teknik f\u00f6r att uppt\u00e4cka stress.<\/p>\n\n\n\n

Att f\u00f6rb\u00e4ttra gr\u00f6dorna \u00e4r det yttersta m\u00e5let f\u00f6r att \u00e5tg\u00e4rda de effekter som orsakas av milj\u00f6faktorer som temperaturf\u00f6r\u00e4ndringar, kemisk p\u00e5verkan och \u00e4ven angrepp fr\u00e5n v\u00e4xt\u00e4tare eller insekter genom att uppt\u00e4cka den elektromagnetiska \u00e5terkopplingen. Vi gratulerar teamet till uppt\u00e4ckten av den molekyl\u00e4ra grunden f\u00f6r biomagnetism i v\u00e4xter.<\/p>\n\n\n\n

Om du vill veta mer om deras forskning, kolla in referensen nedan, och f\u00f6r att l\u00e4sa mer om \u00e5tg\u00e4rdspotentialen klicka p\u00e5 h\u00e4r<\/a>.<\/p>\n\n\n\n

Fabricant, A., Iwata, G.Z., Scherzer, S. et al.<\/em> Aktionspotentialer inducerar biomagnetiska f\u00e4lt i k\u00f6tt\u00e4tande Venus flytrap-v\u00e4xter. Vetenskaplig 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, allm\u00e4nt k\u00e4nd som Venus flugf\u00e4lla, \u00e4r en k\u00f6tt\u00e4tande v\u00e4xt som f\u00e5ngar sitt byte genom modifierade blad. Verkningsmekanismen innefattar bladets snabba r\u00f6relse n\u00e4r det lilla bytet kommer i kontakt med det. Det st\u00e4ngs omedelbart f\u00f6r en senare matsm\u00e4ltningsprocess. Venus flugf\u00e4llas blad best\u00e5r av ber\u00f6ringsk\u00e4nsliga [...]<\/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\/sv_se\/magnetisk-revolution-venus-flytrap-verkan-potential\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\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\/sv_se\/magnetisk-revolution-venus-flytrap-verkan-potential\/\" \/>\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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