{"id":2899,"date":"2018-06-25T11:37:58","date_gmt":"2018-06-25T09:37:58","guid":{"rendered":"https:\/\/ist.blogs.inra.fr\/afs\/?p=2899"},"modified":"2018-06-25T11:37:58","modified_gmt":"2018-06-25T09:37:58","slug":"comparison-of-the-nutrient-resorption-stoichiometry-of-quercus-variabilis-blume-growing-in-two-sites-contrasting-in-soil-phosphorus-content","status":"publish","type":"post","link":"https:\/\/ist.blogs.inrae.fr\/afs\/2018\/06\/25\/comparison-of-the-nutrient-resorption-stoichiometry-of-quercus-variabilis-blume-growing-in-two-sites-contrasting-in-soil-phosphorus-content\/","title":{"rendered":"Comparison of the nutrient resorption stoichiometry of Quercus variabilis Blume growing in two sites contrasting in soil phosphorus content"},"content":{"rendered":"<script type='text\/javascript' src='https:\/\/d1bxh8uas1mnw7.cloudfront.net\/assets\/embed.js'><\/script><p>Foliar phosphorus (P) resorption in <em>Quercus variabilis<\/em> Blume was significantly lower at a P-rich than at a P-deficient site. Moreover, P resorption strongly decreased, and nitrogen:phosphorus and carbon:phosphorus resorption ratios increased with soil P content. This demonstrates a strong link between foliar P resorption and P content in soils, and emphasizes the importance of P resorption in leaves of trees growing in soils with contrasted P content.<\/p>\n<p><strong>Context<\/strong> Subtropical ecosystems are generally characterized by P-deficient soils. However, P-rich soils develop in phosphate rock areas.<br \/>\n<strong>Aims<\/strong> We compared the patterns of nutrient resorption, in terms of ecological stoichiometry, for two sites naturally varying in soil P content.<br \/>\n<strong>Methods<\/strong> The resorption efficiency (percentage of a nutrient recovered from senescing leaves) and proficiency (level to which nutrient concentration is reduced in senesced leaves) of 12 elements were determined in two oak (<em>Q. variabilis<\/em>) populations growing at a P-rich or a P-deficient site in subtropical China.<br \/>\n<strong>Results<\/strong> P resorption efficiency dominated the intraspecific variation in nutrient resorption between the two sites. <em>Q. variabilis<\/em> exhibited a low P resorption at the P-rich site and a high P resorption at the P-deficient site. Both P resorption efficiency and proficiency strongly decreased with soil P content only and were positively related to the N:P and C:P ratios in green and senesced leaves. Moreover, resorption efficiency ratios of both N:P and C:P were positively associated with soil P.<br \/>\n<strong>Conclusion<\/strong> These results revealed a strong link between P resorption and P stoichiometry in response to a P deficiency in the soil, and a single- and limiting-element control pattern of P resorption. Hence, these results provide new insights into the role of P resorption in plant adaptations to geologic variations of P in the subtropics.<\/p>\n<p>Keywords<br \/>\nPhosphate rocks, Ecological stoichiometry, Oak, Leaves, Subtropics, Nutrient resorption, Quercus variabilis<\/p>\n<div class='altmetric-embed' data-badge-type='donut' data-doi='10.1007\/s13595-018-0727-5'  style='float: right; ' ><\/div>\n<p>Publication<br \/>\nJi, H., Wen, J., Du, B. et al. Annals of Forest Science (2018) 75: 59.<br \/>\n<a href=\"https:\/\/doi.org\/10.1007\/s13595-018-0727-5\">https:\/\/doi.org\/10.1007\/s13595-018-0727-5<\/a><\/p>\n<p>For the read-only version of the full text: <a href=\"https:\/\/rdcu.be\/1MOv\">https:\/\/rdcu.be\/1MOv<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Foliar phosphorus (P) resorption in Quercus variabilis Blume was significantly lower at a P-rich than at a P-deficient site. Moreover, P resorption strongly decreased, and nitrogen:phosphorus and carbon:phosphorus resorption ratios increased with soil P content. This demonstrates a strong link between foliar P resorption and P content in soils, and emphasizes the importance of P [&hellip;]<\/p>\n","protected":false},"author":94,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,15],"tags":[],"class_list":["post-2899","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\/2899","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\/94"}],"replies":[{"embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/comments?post=2899"}],"version-history":[{"count":0,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts\/2899\/revisions"}],"wp:attachment":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/media?parent=2899"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/categories?post=2899"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/tags?post=2899"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}