{"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\/cs\/magnetic-revolution-venus-flytrap-action-potential\/","title":{"rendered":"Magnetick\u00e1 revoluce: Ak\u010dn\u00ed potenci\u00e1l Venu\u0161iny pasti"},"content":{"rendered":"

Dionaea muscipula, zn\u00e1m\u00e1 jako mucholapka venu\u0161ina, je maso\u017erav\u00e1 rostlina, kter\u00e1 svou ko\u0159ist chyt\u00e1 do pasti pomoc\u00ed upraven\u00fdch list\u016f. Mechanismus \u00fa\u010dinku spo\u010d\u00edv\u00e1 v rychl\u00e9m pohybu listu, kdy\u017e se s n\u00edm mal\u00e1 ko\u0159ist dostane do kontaktu. Okam\u017eit\u011b se uzav\u0159e pro pozd\u011bj\u0161\u00ed proces tr\u00e1ven\u00ed. List mucholapky Venu\u0161iny se skl\u00e1d\u00e1 z chloupk\u016f citliv\u00fdch na dotek neboli spou\u0161t\u011bc\u00edch chloupk\u016f, kter\u00e9 pom\u00e1haj\u00ed p\u0159i signalizaci pro lapen\u00ed prost\u0159ednictv\u00edm sod\u00edkem aktivovan\u00e9ho ak\u010dn\u00edho potenci\u00e1lu.<\/p>\n\n\n\n

\"n\u011bkolik<\/a>
Zdroj obr\u00e1zku: Unsplash<\/a> podle Dmitrij Makarov<\/a>.<\/figcaption><\/figure>\n\n\n\n

Ak\u010dn\u00ed potenci\u00e1l je zp\u016fsob bun\u011b\u010dn\u00e9 signalizace, kter\u00e1 prob\u00edh\u00e1 tak, \u017ee kladn\u011b nabit\u00e9 ionty vstupuj\u00ed do bun\u011bk a zp\u016fsobuj\u00ed rychlou zm\u011bnu elektrick\u00e9ho prost\u0159ed\u00ed v bun\u011b\u010dn\u00e9 membr\u00e1n\u011b, aby dos\u00e1hly prahov\u00e9 hranice. To n\u00e1sledn\u011b vys\u00edl\u00e1 elektrick\u00e9 sign\u00e1ly do druh\u00e9 bu\u0148ky, kter\u00e1 aktivn\u011b reaguje. <\/p>\n\n\n\n

Sign\u00e1l je tak rychl\u00fd, \u017ee ko\u0159ist uv\u011bzn\u00ed b\u011bhem n\u011bkolika sekund. <\/p>\n\n\n\n

Ko\u0159ist je tr\u00e1vena enzymy uvol\u0148ovan\u00fdmi \u017el\u00e1zami na v\u00fdstelce listu. Pot\u0159ebn\u00e9 \u017eiviny rostlina vst\u0159eb\u00e1v\u00e1, aby mohla pokra\u010dovat v \u010dinnosti.<\/p>\n\n\n\n

D\u016fvodem je pozorov\u00e1n\u00ed a experimentov\u00e1n\u00ed:<\/strong><\/p>\n\n\n\n

Stejn\u011b jako lidsk\u00fd mozek zodpov\u00edd\u00e1 za zm\u011bny nap\u011bt\u00ed v ur\u010dit\u00fdch oblastech, kter\u00e9 se objevuj\u00ed jako elektrick\u00e1 aktivita v podob\u011b ak\u010dn\u00edch potenci\u00e1l\u016f, kter\u00e9 proch\u00e1zej\u00ed nervov\u00fdmi bu\u0148kami. Tyto aktivity lze odhadovat pomoc\u00ed technik, jako je magnetoencefalografie, elektroencefalografie a magnetick\u00e1 rezonance, a analyzovat tak p\u0159\u00edpadn\u00e9 poruchy a jejich diagnostiku.<\/p>\n\n\n\n

Skupina mezioborov\u00fdch v\u00fdzkumn\u00edk\u016f prok\u00e1zala unik\u00e1tn\u00ed magnetickou aktivitu mucholapky venu\u0161in\u011b ve spojen\u00ed s jej\u00ed elektrickou signalizac\u00ed podobn\u011b jako u lid\u00ed.<\/p>\n\n\n\n

Mechanismus Venu\u0161iny pasti je rovn\u011b\u017e zalo\u017een na ak\u010dn\u00edm potenci\u00e1lu, kter\u00fd vede k elektrick\u00fdm sign\u00e1l\u016fm v syst\u00e9mu.<\/p>\n\n\n\n

\"Krimpovac\u00ed<\/a>
Zdroj obr\u00e1zku: Unsplash<\/a> podle Clint Patterson<\/a><\/figcaption><\/figure>\n\n\n\n

Ak\u010dn\u00ed potenci\u00e1l Venu\u0161in\u00fdch mu\u0161ek m\u016f\u017ee b\u00fdt spu\u0161t\u011bn teplem, chladem, obsahem vody a dal\u0161\u00edmi mechanick\u00fdmi nebo environment\u00e1ln\u00edmi faktory. V\u011bdci pou\u017eili teplo k vyvol\u00e1n\u00ed ak\u010dn\u00edho potenci\u00e1lu pro m\u011b\u0159en\u00ed magnetick\u00e9ho pole, proto\u017ee si v\u0161imli, \u017ee teplota ovliv\u0148uje amplitudu ak\u010dn\u00edho potenci\u00e1lu.<\/p>\n\n\n\n

K m\u011b\u0159en\u00ed biomagnetismu spojen\u00e9ho s elektrickou aktivitou pou\u017eili atomov\u00e9 magnetometry. Jako senzory byly pou\u017eity sklen\u011bn\u00e9 bu\u0148ky napln\u011bn\u00e9 parami alkalick\u00fdch atom\u016f, kter\u00e9 reagovaly na zm\u011bny biomagnetick\u00e9 aktivity.<\/p>\n\n\n\n

Magnetometry vy\u017eaduj\u00ed k m\u011b\u0159en\u00ed magneticky st\u00edn\u011bn\u00e9 prost\u0159ed\u00ed. Jedn\u00e1 se o preventivn\u00ed krok, aby bylo mo\u017en\u00e9 m\u011b\u0159it pouze magnetickou aktivitu mnohobun\u011b\u010dn\u00e9 rostliny. Tento n\u00e1stroj je velmi \u00fa\u010dinn\u00fd a up\u0159ednost\u0148ovan\u00fd p\u0159ed magnetometry se supravodiv\u00fdm kvantov\u00fdm rozhran\u00edm (SQID), proto\u017ee je lze miniaturizovat pro optim\u00e1ln\u00ed prostorov\u00e9 rozli\u0161en\u00ed p\u0159i m\u011b\u0159en\u00ed dat.<\/p>\n\n\n\n

V\u011bdci zaznamenali magnetick\u00fd sign\u00e1l Venu\u0161iny pasti o amplitud\u011b 0,5 pikotesla, co\u017e je mnohem slab\u0161\u00ed ne\u017e magnetick\u00e9 pole Zem\u011b. <\/p>\n\n\n\n

Z toho lze usuzovat na u\u017eite\u010dnost biomagnetick\u00e9 aktivity, kter\u00e1 by mohla pomoci v neinvazivn\u00ed technice detekce stresu.<\/p>\n\n\n\n

Zlep\u0161en\u00ed plodin je kone\u010dn\u00fdm c\u00edlem pro odstran\u011bn\u00ed \u00fa\u010dink\u016f zp\u016fsoben\u00fdch faktory prost\u0159ed\u00ed, jako jsou zm\u011bny teploty, chemick\u00e9 p\u016fsoben\u00ed a tak\u00e9 napaden\u00ed b\u00fdlo\u017eravci nebo hmyzem, pomoc\u00ed detekce elektromagnetick\u00e9 zp\u011btn\u00e9 vazby. Pochvala t\u00fdmu za objeven\u00ed molekul\u00e1rn\u00edho z\u00e1kladu biomagnetismu v rostlin\u00e1ch.<\/p>\n\n\n\n

Chcete-li se dozv\u011bd\u011bt v\u00edce o jejich v\u00fdzkumu, pod\u00edvejte se na n\u00ed\u017ee uveden\u00fd odkaz a v\u00edce informac\u00ed o ak\u010dn\u00edm potenci\u00e1lu, klikn\u011bte na odkaz. zde<\/a>.<\/p>\n\n\n\n

Fabricant, A., Iwata, G.Z., Scherzer, S. a dal\u0161\u00ed.<\/em> Ak\u010dn\u00ed potenci\u00e1ly indukuj\u00ed biomagnetick\u00e1 pole u maso\u017erav\u00fdch rostlin Venu\u0161in\u00fdch mucholapek. 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, zn\u00e1m\u00e1 jako mucholapka venu\u0161ina, je maso\u017erav\u00e1 rostlina, kter\u00e1 svou ko\u0159ist chyt\u00e1 do pasti pomoc\u00ed upraven\u00fdch list\u016f. Mechanismus \u00fa\u010dinku spo\u010d\u00edv\u00e1 v rychl\u00e9m pohybu listu, kdy\u017e se s n\u00edm mal\u00e1 ko\u0159ist dostane do kontaktu. Okam\u017eit\u011b se uzav\u0159e pro pozd\u011bj\u0161\u00ed proces tr\u00e1ven\u00ed. List mucholapky se skl\u00e1d\u00e1 z list\u016f citliv\u00fdch na dotek, kter\u00e9 jsou [...]<\/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\/cs\/magnetic-revolution-venus-flytrap-action-potential\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\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\/cs\/magnetic-revolution-venus-flytrap-action-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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