{"id":199,"date":"2012-10-24T20:20:43","date_gmt":"2012-10-24T18:20:43","guid":{"rendered":"http:\/\/wp.unil.ch\/hardtkelab\/?page_id=199"},"modified":"2023-03-22T07:47:46","modified_gmt":"2023-03-22T06:47:46","slug":"secondary-growth","status":"publish","type":"page","link":"https:\/\/wp.unil.ch\/hardtkelab\/research-projects\/retired-projects\/secondary-growth\/","title":{"rendered":"Secondary Growth"},"content":{"rendered":"<p style=\"text-align: justify\"><a href=\"https:\/\/wp.unil.ch\/hardtkelab\/files\/2016\/01\/X_P-dev.png\"><img alt=\"\" loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-1244 size-medium\" src=\"https:\/\/wp.unil.ch\/hardtkelab\/files\/2016\/01\/X_P-dev-e1578491537817-296x300.png\" alt=\"\" width=\"296\" height=\"300\" srcset=\"https:\/\/wp.unil.ch\/hardtkelab\/files\/2016\/01\/X_P-dev-e1578491537817-296x300.png 296w, https:\/\/wp.unil.ch\/hardtkelab\/files\/2016\/01\/X_P-dev-e1578491537817.png 453w\" sizes=\"auto, (max-width: 296px) 100vw, 296px\" \/><\/a>It is an often neglected, but one of the most important growth processes in plants: secondary growth, the thickening of stem and root structures by radial expansion. We used the Arabidopsis hypocotyl as a model for this process, because its later phase secondary growth is reminiscent of trees and can be triggered at will via a transgenic system. The process is massive in scale, even the small Arabidopsis hypocotyl grows from a few hundred to several thousand cell files in only a few weeks. Nevertheless, it is strictly patterned. Find out about our work on secondary growth in the following publications:<\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S1369526615001673\" target=\"_blank\" rel=\"noopener noreferrer\">Fabio Lehmann and Christian S. Hardtke (2016):\u00a0<strong>Secondary growth of the Arabidopsis hypocotyl \u2014 vascular development in 4 dimensions.\u00a0<span style=\"color: #ff9900\"><em>Current Opinion in Plant Biology<\/em><\/span><\/strong><span style=\"color: #ff9900\">,<\/span> Vol. 29: pp. 9-15.<\/a><\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/elifesciences.org\/content\/elife\/3\/e01567.full.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Martial Sankar, Kaisa Nieminen, Laura Ragni, Ioannis Xenarios\u00a0and Christian S. Hardtke (2014):\u00a0<strong>Automated quantitative histology reveals vascular morphodynamics during Arabidopsis hypocotyl secondary growth.\u00a0<span style=\"color: #ff9900\"><em>eLife<\/em><\/span><\/strong><span style=\"color: #ff9900\">,<\/span> https:\/\/dx.doi.org\/10.7554\/eLife.01567.<\/a><\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/ppl.12118\/abstract;jsessionid=3CCD6FF820C0196A920DD60224A1A825.f01t03\" target=\"_blank\" rel=\"noopener noreferrer\">Laura Ragni and Christian S. Hardtke (2013):\u00a0<strong>Small but thick enough &#8211; the Arabidopsis hypocotyl as a model to study secondary growth.\u00a0<span style=\"color: #ff9900\"><em>Physiologia Plantarum<\/em><\/span><\/strong><span style=\"color: #ff9900\">,<\/span> doi: 10.1111\/ppl.12118.<\/a><\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/www.plantcell.org\/content\/23\/4\/1322.abstract?sid=55f9fea0-eb83-4215-a634-c2bf3be68493\">Laura Ragni, Kaisa Nieminen, David Pacheco-Villalobos, Richard Sibout, Claus Schwechheimer and Christian S. Hardtke (2011): <strong>A direct stimulatory role of mobile gibberellin in Arabidopsis hypocotyl xylem expansion.<\/strong> <span style=\"color: #ff9900\"><em><strong>The Plant Cell<\/strong><\/em>,<\/span> Vol. 23: pp. 1322-1336.<\/a><\/p>\n<p><a href=\"https:\/\/www.cell.com\/current-biology\/abstract\/S0960-9822(08)00257-1\">Richard Sibout, Stephanie Plantegenet and Christian S. Hardtke (2008): <strong>Flowering as a condition for xylem expansion in Arabidopsis hypocotyl &amp; root.<\/strong> <span style=\"color: #ff9900\"><em><strong>Current Biology<\/strong><\/em>,<\/span> Vol. 18: pp. 458-463.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>It is an often neglected, but one of the most important growth processes in plants: secondary growth, the thickening of stem and root structures by radial expansion. We used the &hellip; <\/p>\n","protected":false},"author":1001,"featured_media":0,"parent":1217,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"class_list":["post-199","page","type-page","status-publish"],"_links":{"self":[{"href":"https:\/\/wp.unil.ch\/hardtkelab\/wp-json\/wp\/v2\/pages\/199","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.unil.ch\/hardtkelab\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/wp.unil.ch\/hardtkelab\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/hardtkelab\/wp-json\/wp\/v2\/users\/1001"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/hardtkelab\/wp-json\/wp\/v2\/comments?post=199"}],"version-history":[{"count":0,"href":"https:\/\/wp.unil.ch\/hardtkelab\/wp-json\/wp\/v2\/pages\/199\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/wp.unil.ch\/hardtkelab\/wp-json\/wp\/v2\/pages\/1217"}],"wp:attachment":[{"href":"https:\/\/wp.unil.ch\/hardtkelab\/wp-json\/wp\/v2\/media?parent=199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}