{"id":7538,"date":"2016-11-17T06:23:29","date_gmt":"2016-11-17T06:23:29","guid":{"rendered":"https:\/\/mycor.iam.inrae.fr\/IAM\/?p=7538"},"modified":"2016-11-17T06:24:14","modified_gmt":"2016-11-17T06:24:14","slug":"article-new-physiologist","status":"publish","type":"post","link":"https:\/\/mycor.iam.inrae.fr\/IAM\/?p=7538","title":{"rendered":"Article: New phytologist"},"content":{"rendered":"<p><a class=\"gsc_a_at\" href=\"http:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/nph.14279\/full\">Fungal and plant gene expression in the Tulasnella calospora\u2013Serapias vomeracea symbiosis provides clues about nitrogen pathways in orchid mycorrhizas<\/a>\u00a0V Fochi, W Chitarra, A Kohler, S Voyron, VR Singan, EA Lindquist, &#8230;New Phytologist<\/p>\n<h2 class=\"article-section__header\">Summary<\/h2>\n<ul id=\"nph14279-list-0001\" class=\"u-list--bullet o-list--paragraph\">\n<li>Orchids are highly dependent on their mycorrhizal fungal partners for nutrient supply, especially during early developmental stages. In addition to organic carbon, nitrogen (N) is probably a major nutrient transferred to the plant because orchid tissues are highly N-enriched. We know almost nothing about the N form preferentially transferred to the plant or about the key molecular determinants required for N uptake and transfer.<\/li>\n<li>We identified, in the genome of the orchid mycorrhizal fungus\u00a0<em>Tulasnella calospora<\/em>, two functional ammonium transporters and several amino acid transporters but found no evidence of a nitrate assimilation system, in agreement with the N preference of the free-living mycelium grown on different N sources.<\/li>\n<li>Differential expression in symbiosis of a repertoire of fungal and plant genes involved in the transport and metabolism of N compounds suggested that organic N may be the main form transferred to the orchid host and that ammonium is taken up by the intracellular fungus from the apoplatic symbiotic interface.<\/li>\n<li>This is the first study addressing the genetic determinants of N uptake and transport in orchid mycorrhizas, and provides a model for nutrient exchanges at the symbiotic interface, which may guide future experiments.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Fungal and plant gene expression in the Tulasnella calospora\u2013Serapias vomeracea symbiosis provides clues about nitrogen pathways in orchid mycorrhizas\u00a0V Fochi, W Chitarra, A Kohler, S Voyron, VR Singan, EA Lindquist, &#8230;New Phytologist Summary Orchids are highly dependent on their mycorrhizal &hellip; <a href=\"https:\/\/mycor.iam.inrae.fr\/IAM\/?p=7538\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-7538","post","type-post","status-publish","format-standard","hentry","category-academic-productions"],"_links":{"self":[{"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=\/wp\/v2\/posts\/7538","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7538"}],"version-history":[{"count":0,"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=\/wp\/v2\/posts\/7538\/revisions"}],"wp:attachment":[{"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7538"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7538"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}