{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,11]],"date-time":"2026-09-11T05:01:55Z","timestamp":1789102915455,"version":"build-2803163510"},"reference-count":47,"publisher":"Oxford University Press (OUP)","issue":"2","license":[{"start":{"date-parts":[[2024,10,4]],"date-time":"2024-10-04T00:00:00Z","timestamp":1728000000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"funder":[{"DOI":"10.13039\/501100015997","name":"Fundo Brasileiro para a Biodiversidade","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100015997","id-type":"DOI","asserted-by":"crossref"}]},{"name":"South African Research Chairs Programme"},{"DOI":"10.13039\/501100004901","name":"Funda\u00e7\u00e3o de Amparo \u00e0 Pesquisa do Estado de Minas Gerais","doi-asserted-by":"crossref","award":["RED-00039-23"],"award-info":[{"award-number":["RED-00039-23"]}],"id":[{"id":"10.13039\/501100004901","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100004901","name":"Funda\u00e7\u00e3o de Amparo \u00e0 Pesquisa do Estado de Minas Gerais","doi-asserted-by":"crossref","award":["APQ-03249-22"],"award-info":[{"award-number":["APQ-03249-22"]}],"id":[{"id":"10.13039\/501100004901","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,1,10]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Resupination refers to the developmental orientation changes of flowers through ~180\u00b0, leaving them effectively upside-down. It is a widespread trait present in 14 angiosperm families, including the Orchidaceae, where it is a gravitropic phenomenon actively controlled by auxins. Here, we demonstrate that the passive gravitational pull on flower parts can have an additional influence on resupination. We studied a lady\u2019s slipper orchid in which some flowers naturally fail to resupinate. We conducted a manipulative experiment removing floral parts and showed that both the probability of complete resupination and the degree of flower vertical movement (from 0\u00b0 to 180\u00b0) are related to the mass of floral organs. During flower development, the tip of the ovary slightly curves actively (14.75\u00b0) due to gravitropism. This promotes a lever arm effect so that the gravitational pull acting on flower mass creates a torque that bends the ovary, orienting the flower into a resupinate position that is accessible to pollinators. The role of the mass of floral organs in resupination provides new insights into flower development and its role in pollination mechanisms.<\/jats:p>","DOI":"10.1093\/jxb\/erae413","type":"journal-article","created":{"date-parts":[[2024,10,2]],"date-time":"2024-10-02T19:21:25Z","timestamp":1727896885000},"page":"433-444","source":"Crossref","is-referenced-by-count":2,"title":["Flowers meet Newton: testing the role of gravitational pull in resupination of orchid flowers"],"prefix":"10.1093","volume":"76","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0411-8159","authenticated-orcid":false,"given":"Jo\u00e3o C F","family":"Cardoso","sequence":"first","affiliation":[{"name":"Departamento de Biodiversidade Evolu\u00e7\u00e3o e Meio Ambiente, Universidade Federal de Ouro Preto , Minas Gerais ,","place":["Brazil"]},{"name":"Instituto de Biologia, Universidade Federal de Uberl\u00e2ndia , Uberl\u00e2ndia, Minas Gerais ,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Steven D","family":"Johnson","sequence":"additional","affiliation":[{"name":"Centre for Functional Biodiversity, School of Life Sciences, University of KwaZulu-Natal , Private Bag X01, Scottsville, Pietermaritzburg, 3209 ,","place":["South Africa"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paulo E","family":"Oliveira","sequence":"additional","affiliation":[{"name":"Instituto de Biologia, Universidade Federal de Uberl\u00e2ndia , Uberl\u00e2ndia, Minas Gerais ,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2024,10,4]]},"reference":[{"key":"2025010914164170600_CIT0001","doi-asserted-by":"crossref","first-page":"145","DOI":"10.5962\/p.295120","article-title":"Resupination as a diagnostic character in the Orchidaceae with special reference to Malaxis monophyllos","volume":"6","author":"Ames","year":"1938","journal-title":"Botanical Museum Leaflets, Harvard University"},{"key":"2025010914164170600_CIT0002","first-page":"95","article-title":"Resupination","volume":"3","author":"Arditti","year":"2003","journal-title":"Lankesteriana"},{"key":"2025010914164170600_CIT0003","doi-asserted-by":"crossref","first-page":"378","DOI":"10.32614\/RJ-2017-066","article-title":"glmmTMB balances speed and flexibility among packages for zero-inflated generalized linear mixed modeling. 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