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U.S.A."],"published-print":{"date-parts":[[2026,7,21]]},"abstract":"<jats:p>We present experimental results on the writhing dynamics of cucumber plant tendrils subjected to an axial traction force. At low forces, the tendrils\u2019 curvature saturates exponentially in time at a limiting value. At forces higher than the critical threshold, the tendril fails to coil but develops an intrinsic coiling-prone stress, corresponding to an intrinsic residual curvature, visible if the load is released. Growth-field assessments indicate that curvature arises from differential growth. To understand these experiments we develop an autotropic morphoelastic growth model with a bi-strip geometry, in which one strip undergoes mechanosensitive growth. In the absence of an external load, curvature generation is solely limited by internal stresses. To link the actual curvature to a finite external force, the tendril is approximated as a Kirchhoff rod. The resulting model reproduces the two observed regimes: below the critical axial force, the tendril coils, and above this force, the tendril remains straight but still exhibits intrinsic curvature.<\/jats:p>","DOI":"10.1073\/pnas.2537010123","type":"journal-article","created":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T19:01:17Z","timestamp":1783969277000},"update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":0,"title":["Internal stress controls tendril writhing dynamics in climbing plants"],"prefix":"10.1073","volume":"123","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-7481-1045","authenticated-orcid":false,"given":"\u00c9milien","family":"Dilly","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02rx3b187","id-type":"ROR","asserted-by":"publisher"}],"name":"Laboratoire Interdisciplinaire de Physique, Universit\u00e9 Grenoble Alpes, CNRS","place":["Grenoble, France"]},{"id":[{"id":"https:\/\/ror.org\/05f82e368","id-type":"ROR","asserted-by":"publisher"}],"name":"Universit\u00e9 Paris Cit\u00e9, CNRS, Mati\u00e9re et syst\u00e9mes complexes","place":["Paris, France"]},{"id":[{"id":"https:\/\/ror.org\/003vg9w96","id-type":"ROR","asserted-by":"publisher"}],"name":"Laboratoire Reproduction et D\u00e9veloppement des Plantes, \u00c8cole Normale Sup\u00e9rieure de Lyon, CNRS, Institut National de Recherche pour l\u2019Agriculture, l\u2019Alimentation et l\u2019Environnement, Inria","place":["Lyon Cedex 07, France"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7965-3973","authenticated-orcid":false,"given":"Julien","family":"Derr","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/003vg9w96","id-type":"ROR","asserted-by":"publisher"}],"name":"Laboratoire Reproduction et D\u00e9veloppement des Plantes, \u00c8cole Normale Sup\u00e9rieure de Lyon, CNRS, Institut National de Recherche pour l\u2019Agriculture, l\u2019Alimentation et l\u2019Environnement, Inria","place":["Lyon Cedex 07, France"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6085-7810","authenticated-orcid":false,"given":"Dra\u017een","family":"Zanchi","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05f82e368","id-type":"ROR","asserted-by":"publisher"}],"name":"Universit\u00e9 Paris Cit\u00e9, CNRS, Mati\u00e9re et syst\u00e9mes complexes","place":["Paris, France"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"341","published-online":{"date-parts":[[2026,7,13]]},"reference":[{"key":"e_1_3_4_1_2","doi-asserted-by":"publisher","DOI":"10.5962\/bhl.title.2110"},{"key":"e_1_3_4_2_2","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.2009.0380"},{"key":"e_1_3_4_3_2","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.97.184302"},{"key":"e_1_3_4_4_2","doi-asserted-by":"publisher","DOI":"10.3732\/ajb.0900045"},{"key":"e_1_3_4_5_2","first-page":"57","article-title":"Architecture de quelques lianes d\u2019afrique tropicale 2","volume":"29","author":"Cremers G.","year":"1974","unstructured":"G. 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