{"id":28441,"date":"2023-04-20T14:39:23","date_gmt":"2023-04-20T12:39:23","guid":{"rendered":"https:\/\/www.miljomagasinet.se\/?p=28441"},"modified":"2023-04-20T14:41:01","modified_gmt":"2023-04-20T12:41:01","slug":"tomater-skriker-av-torst","status":"publish","type":"post","link":"https:\/\/www.miljomagasinet.se\/index.php\/2023\/04\/20\/tomater-skriker-av-torst\/","title":{"rendered":"Tomater skriker av t\u00f6rst"},"content":{"rendered":"<p><strong>En forskargrupp fr\u00e5n Tel Aviv University har uppt\u00e4ckt att en tomatplanta skriker n\u00e4r den \u00e4r t\u00f6rstig och \u00e4r tyst n\u00e4r den \u00e4r n\u00f6jd. Forskarna har lyssnat p\u00e5\u00a0 b\u00e5de tobaks- och tomatplantor.<\/strong><\/p>\n<p>Skriken som tomatplantorna ger ifr\u00e5n sig ligger p\u00e5 f\u00f6r h\u00f6g frekvens f\u00f6r m\u00e4nniskor att kunna h\u00f6ras, men forskarna har nu med speciella mikrofoner spelat in ljuden fr\u00e5n flera meters avst\u00e5nd.<\/p>\n<p>\u2013 Ett idylliskt f\u00e4lt med blommor och v\u00e4xter \u00e4r egentligen en plats med en massa buller, s\u00e4ger Lilach Hadany, evolutionsbiolog\u00a0vid Tel Aviv University, till SVT\u00a0Nyheter.<\/p>\n<p>Forskarna har anv\u00e4nt ultraljudsmikrofoner f\u00f6r att lyssna p\u00e5 skadade, uttorkade och friska v\u00e4xter. De fann att en skadad och uttorkad planta ger ifr\u00e5n sig 30 till 50 klickljud per timme, medans en frisk planta \u00e4r helt tyst.<\/p>\n<p>\u2013 F\u00f6rmodligen kan v\u00e4xternas ljud h\u00f6ras av olika djur s\u00e5som m\u00f6ss, fladderm\u00f6ss och insekter, s\u00e4ger Lilach Hadany till SVT\u00a0Nyheter.<\/p>\n<p>Studien innefattade ljud fr\u00e5n tomat- och tobaksplantor, men man fann att \u00e4ven majs, vindruvor, vete och kaktusplantor ger ljud ifr\u00e5n sig vid skada eller om de \u00e4r uttorkade. Ljuden varierar, det kan till exempel bero p\u00e5 hur l\u00e4nge v\u00e4xten varit uttorkad, i s\u00e5 fall skapas ett undertryck i v\u00e4xtens kanalsystem som tar upp vatten fr\u00e5n r\u00f6tterna. D\u00e4rmed bildas luftbubblor som i sin tur ger ifr\u00e5n sig det klickande ljud, som nu har kunnat dokumenteras.<\/p>\n<p>&nbsp;<\/p>\n<p><em>Anna Henriksson<\/em><\/p>\n<p>Foto: Lewis Wilson (is.gd\/nsKGzH)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>En forskargrupp fr\u00e5n Tel Aviv University har uppt\u00e4ckt att en tomatplanta skriker n\u00e4r den \u00e4r t\u00f6rstig och \u00e4r tyst n\u00e4r<\/p>\n","protected":false},"author":15,"featured_media":28442,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"pgc_meta":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[79,4,56],"tags":[61,88,89],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Tomater skriker av 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BJ\u00d6RCK","author_link":"https:\/\/www.miljomagasinet.se\/index.php\/author\/sofie\/"},"rttpg_comment":0,"rttpg_category":"<a href=\"https:\/\/www.miljomagasinet.se\/index.php\/category\/djur-och-natur\/\" rel=\"category tag\">djur och natur<\/a> <a href=\"https:\/\/www.miljomagasinet.se\/index.php\/category\/recent-news\/\" rel=\"category tag\">Nyheter<\/a> <a href=\"https:\/\/www.miljomagasinet.se\/index.php\/category\/vetenskap\/\" rel=\"category tag\">Vetenskap<\/a>","rttpg_excerpt":"En forskargrupp fr\u00e5n Tel Aviv University har uppt\u00e4ckt att en tomatplanta skriker n\u00e4r den \u00e4r t\u00f6rstig och \u00e4r tyst n\u00e4r","_links":{"self":[{"href":"https:\/\/www.miljomagasinet.se\/index.php\/wp-json\/wp\/v2\/posts\/28441"}],"collection":[{"href":"https:\/\/www.miljomagasinet.se\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.miljomagasinet.se\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.miljomagasinet.se\/index.php\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/www.miljomagasinet.se\/index.php\/wp-json\/wp\/v2\/comments?post=28441"}],"version-history":[{"count":1,"href":"https:\/\/www.miljomagasinet.se\/index.php\/wp-json\/wp\/v2\/posts\/28441\/revisions"}],"predecessor-version":[{"id":28443,"href":"https:\/\/www.miljomagasinet.se\/index.php\/wp-json\/wp\/v2\/posts\/28441\/revisions\/28443"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.miljomagasinet.se\/index.php\/wp-json\/wp\/v2\/media\/28442"}],"wp:attachment":[{"href":"https:\/\/www.miljomagasinet.se\/index.php\/wp-json\/wp\/v2\/media?parent=28441"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.miljomagasinet.se\/index.php\/wp-json\/wp\/v2\/categories?post=28441"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.miljomagasinet.se\/index.php\/wp-json\/wp\/v2\/tags?post=28441"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}