{"id":4987,"date":"2015-05-02T05:57:10","date_gmt":"2015-05-02T05:57:10","guid":{"rendered":"https:\/\/mycor.iam.inrae.fr\/IAM\/?p=4987"},"modified":"2015-05-02T05:57:10","modified_gmt":"2015-05-02T05:57:10","slug":"article-plant-journal","status":"publish","type":"post","link":"https:\/\/mycor.iam.inrae.fr\/IAM\/?p=4987","title":{"rendered":"Article: Plant Journal"},"content":{"rendered":"

PtaRHE1, a Populus tremula x P. alba RING\u2010H2 protein of the ATL family, has a regulatory role in secondary phloem fiber development<\/a><\/p>\n

F Baldacci\u2010Cresp, J Moussawi, JC Lepl\u00e9, R Van Acker, A Kohler, …<\/div>\n
The Plant Journal<\/div>\n
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Summary<\/h1>\n
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REALLY INTERESTING NEW GENE (RING) proteins play important roles in the regulation of many processes by recognizing target proteins for ubiquitination. Previously, we have shown that the expression of\u00a0PtaRHE1,<\/em>\u00a0encoding a\u00a0Populus tremula x P. alba\u00a0<\/em>RING-H2 protein with E3 ubiquitin ligase activity, is associated with tissues undergoing secondary growth. To further elucidate the role of PtaRHE1 in vascular tissues, we have undertaken a reverse genetic analysis in poplar. Within stem secondary vascular tissues,\u00a0PtaRHE1<\/em>\u00a0and its corresponding protein are expressed predominantly in the phloem. Down-regulation of\u00a0PtaRHE1<\/em>\u00a0in poplar by artificial miRNA triggers alterations in phloem fiber patterning characterized by an increased portion of secondary phloem fibers that have a reduced cell wall thickness and a change in lignin composition with lower amounts of syringyl units as compared to wild type plants. Following a RNA-seq analysis, a biological network involving hormone, stress signalling as well as developmental processes could be delineated. Several candidate genes possibly associated with the altered phloem fiber phenotype observed in\u00a0amiRPtaRHE1<\/em>\u00a0poplar were identified. Altogether, our data suggest a regulatory role for PtaRHE1 in secondary phloem fiber development.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

PtaRHE1, a Populus tremula x P. alba RING\u2010H2 protein of the ATL family, has a regulatory role in secondary phloem fiber development F Baldacci\u2010Cresp, J Moussawi, JC Lepl\u00e9, R Van Acker, A Kohler, … The Plant Journal Summary REALLY INTERESTING … Continue reading →<\/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-4987","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\/4987","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=4987"}],"version-history":[{"count":0,"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=\/wp\/v2\/posts\/4987\/revisions"}],"wp:attachment":[{"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4987"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4987"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4987"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}