{"id":3104,"date":"2018-12-23T11:20:04","date_gmt":"2018-12-23T10:20:04","guid":{"rendered":"https:\/\/ist.blogs.inra.fr\/afs\/?p=3104"},"modified":"2019-01-09T17:17:53","modified_gmt":"2019-01-09T16:17:53","slug":"the-recurrent-evolution-of-extremely-resistant-xylem","status":"publish","type":"post","link":"https:\/\/ist.blogs.inrae.fr\/afs\/2018\/12\/23\/the-recurrent-evolution-of-extremely-resistant-xylem\/","title":{"rendered":"The recurrent evolution of extremely resistant xylem"},"content":{"rendered":"<script type='text\/javascript' src='https:\/\/d1bxh8uas1mnw7.cloudfront.net\/assets\/embed.js'><\/script><div id=\"ASec1\" class=\"AbstractSection\">\n<p id=\"Par1\" class=\"Para\"><strong class=\"EmphasisTypeBold \">Highly resistant xylem has evolved multiple times over the past 400 million years.<\/strong><\/p>\n<p>Scott A M MacAdam &amp; Amanda A Cardoso<\/p>\n<\/div>\n<div id=\"ASec2\" class=\"AbstractSection\">\n<div id=\"ASec2\" class=\"AbstractSection\">\n<p class=\"Para\">Water is transported under tension in xylem and consequently is vulnerable to invasion by air and the formation of embolism. A debate has raged over whether embolism formation is non-reversible occurring at low water potentials or a regular diurnal occurrence that is non-lethal because of a capacity to refill embolised conduits.<\/p>\n<\/div>\n<div id=\"ASec3\" class=\"AbstractSection\">\n<p class=\"Para\">This commentary is on a recent article, which utilised new non-invasive imaging techniques for assessing the formation of embolism in xylem, finding that the xylem of <em class=\"EmphasisTypeItalic \">Laurus nobilis<\/em> was highly resistant to the formation of embolism.<\/p>\n<\/div>\n<div id=\"ASec4\" class=\"AbstractSection\">\n<p class=\"Para\">The recent results of this discovery are placed in the context knowledge from a diversity of species that has so far been identified with xylem similarly highly resistant to embolism formation.<\/p>\n<div id=\"ASec5\" class=\"AbstractSection\">\n<p class=\"Para\">The discovery that <em class=\"EmphasisTypeItalic \">L. nobilis<\/em> has xylem highly resistant to embolism formation adds to a body of literature suggesting that the resistance of xylem to embolism formation is a key adaptation utilised by many species native to seasonally dry environments. Highly resistant xylem has evolved numerous times across the angiosperm clade.<\/p>\n<\/div>\n<div id=\"ASec6\" class=\"AbstractSection\">\n<p class=\"Para\">With more studies utilising similar observational and direct methods of assessing embolism resistance, further insight into the ecological and evolutionary relevance of this trait is imminent.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class='altmetric-embed' data-badge-type='donut' data-doi='10.1007\/s13595-018-0786-7'  style='float: right; ' ><\/div>\n<p><strong>Publication<\/strong><br \/>\nMcAdam, S.A.M. &amp; Cardoso, A.A. Annals of Forest Science (2019) 76: 2.<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1007\/s13595-018-0786-7\">https:\/\/doi.org\/10.1007\/s13595-018-0786-7<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>For the read-only version of the full text: <a href=\"https:\/\/rdcu.be\/becqw\">https:\/\/rdcu.be\/baQqm<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Highly resistant xylem has evolved multiple times over the past 400 million years. Scott A M MacAdam &amp; Amanda A Cardoso Water is transported under tension in xylem and consequently is vulnerable to invasion by air and the formation of embolism. A debate has raged over whether embolism formation is non-reversible occurring at low water [&hellip;]<\/p>\n","protected":false},"author":35,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,18,17],"tags":[],"class_list":["post-3104","post","type-post","status-publish","format-standard","hentry","category-editors-choice","category-letter-to-the-editor","category-opinion-paper","cat-7-id","cat-18-id","cat-17-id"],"_links":{"self":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts\/3104","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/users\/35"}],"replies":[{"embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/comments?post=3104"}],"version-history":[{"count":0,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts\/3104\/revisions"}],"wp:attachment":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/media?parent=3104"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/categories?post=3104"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/tags?post=3104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}