{"id":3566,"date":"2019-06-13T09:00:44","date_gmt":"2019-06-13T07:00:44","guid":{"rendered":"https:\/\/ist.blogs.inra.fr\/afs\/?p=3566"},"modified":"2019-06-06T17:30:31","modified_gmt":"2019-06-06T15:30:31","slug":"the-relation-between-pressure-volume-curve-traits-and-stomatal-regulation-of-water-potential-in-five-temperate-broadleaf-tree-species","status":"publish","type":"post","link":"https:\/\/ist.blogs.inrae.fr\/afs\/2019\/06\/13\/the-relation-between-pressure-volume-curve-traits-and-stomatal-regulation-of-water-potential-in-five-temperate-broadleaf-tree-species\/","title":{"rendered":"The relation between pressure\u2013volume curve traits and stomatal regulation of water potential in five temperate broadleaf tree species"},"content":{"rendered":"<script type='text\/javascript' src='https:\/\/d1bxh8uas1mnw7.cloudfront.net\/assets\/embed.js'><\/script><p align=\"justify\">In the five temperate tree species, leaf turgor loss point and the stringency of stomatal regulation are not related to each other and to the drought sensitivity of radial growth, suggesting that additional factors exert a large influence on the species\u2019 drought tolerance.<\/p>\n<p align=\"justify\"><strong>Context<\/strong> How trees are responding to drought will largely determine their fitness and survival in a warmer and drier world. Much of our understanding of the drought response strategies of woody plants has been based on the study of either plant hydraulics or leaf water status dynamics or stomatal behavior, while the interaction of these components is less often studied.<br \/>\n<strong>Aims<\/strong> To examine the relatedness of leaf tissue osmotic and elastic properties to the isohydry\u2013anisohydry syndrome in adult trees of five co-occurring broadleaf tree species (<em>Acer pseudoplatanus<\/em> L., <em>Carpinus betulus<\/em> L., <em>Fagus sylvatica<\/em> L., <em>Fraxinus excelsior<\/em> L., and <em>Tilia cordata<\/em> Mill.), which differ in the stringency of stomatal regulation.<br \/>\n<strong>Methods<\/strong> Adult trees of the five species were accessed with a mobile canopy lift and pressure\u2013volume (p-v) curves of sun leaf tissue analyzed for species differences and seasonal change in p-v curve parameters. The extent of seasonal fluctuation in daily leaf water potential (\u03a8l) minima served to position the species along the isohydry-anisohydry continuum.<br \/>\n<strong>Results<\/strong> The five species differed greatly in the bulk modulus of elasticity (\u03b5) (12 MPa to 33 MPa) and, to a lesser extent, in leaf water potential at turgor loss (\u03c0tlp) (\u2212\u20092.3 MPa to \u2212\u20092.9 MPa), exhibiting species-specific combinations of p-v parameters with the extent of \u03a8l fluctuation. However, \u03c0tlp and \u03b5 were only weakly, or not at all, related to the species\u2019 position along the isohydry\u2013anisohydry continuum. Anisohydric <em>Fagus sylvatica<\/em> with high \u03b5 and relatively low \u03c0tlp had a more drought-sensitive radial growth than the fairly isohydric <em>Tilia cordata<\/em> with low \u03b5 and relatively high \u03c0tlp.<br \/>\n<strong>Conclusion<\/strong> The five coexisting tree species exhibit largely different drought response strategies, which are partly determined by species differences in leaf tissue elasticity and the stringency of stomatal regulation.<\/p>\n<p><strong>Keywords<\/strong><br \/>\nAnisohydry, <em>Acer pseudoplatanus<\/em>, <em>Carpinus betulus<\/em>, <em>Fagus sylvatica<\/em>, <em>Fraxinus excelsior<\/em>, Isohydry, p-v curve analysis, <em>Tilia cordata<\/em><\/p>\n<div class='altmetric-embed' data-badge-type='donut' data-doi='10.1007\/s13595-019-0838-7'  style='float: right; ' ><\/div>\n<p><strong>Publication<\/strong><br \/>\nLeuschner, C., Wedde, P. &amp; L\u00fcbbe, T. Annals of Forest Science (2019) 76: 60. <a href=\"https:\/\/doi.org\/10.1007\/s13595-019-0838-7\">https:\/\/doi.org\/10.1007\/s13595-019-0838-7<\/a><\/p>\n<p>For the read-only version of the full text: <a href=\"https:\/\/rdcu.be\/bFJbY\">https:\/\/rdcu.be\/bFJbY<\/a><\/p>\n<p align=\"justify\"><strong>Data availability<\/strong><br \/>\nThe data sets generated and\/or analyzed during the current study are available from the corresponding author on reasonable request.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the five temperate tree species, leaf turgor loss point and the stringency of stomatal regulation are not related to each other and to the drought sensitivity of radial growth, suggesting that additional factors exert a large influence on the species\u2019 drought tolerance. Context How trees are responding to drought will largely determine their fitness [&hellip;]<\/p>\n","protected":false},"author":106,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,15],"tags":[],"class_list":["post-3566","post","type-post","status-publish","format-standard","hentry","category-article-type","category-research-paper","cat-14-id","cat-15-id"],"_links":{"self":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts\/3566","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\/106"}],"replies":[{"embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/comments?post=3566"}],"version-history":[{"count":0,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts\/3566\/revisions"}],"wp:attachment":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/media?parent=3566"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/categories?post=3566"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/tags?post=3566"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}