{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,27]],"date-time":"2026-10-27T22:09:45Z","timestamp":1793138985418,"version":"4.5.0"},"reference-count":0,"publisher":"Oxford University Press (OUP)","license":[{"start":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T00:00:00Z","timestamp":1789430400000},"content-version":"am","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Calcium (Ca) deficiency can impair fruit development even under optimal soil Ca levels due to its transpiration-dependent transport. Because fruits exhibit significantly lower transpiration rates than leaves, any further reduction in fruit transpiration during development can limit Ca delivery, leading to lower fruit Ca content and diminished quality. Foliar application of Ca offers a potential strategy to mitigate these effects; however, its low mobility in the phloem often limits treatment efficacy. To better understand this phenomenon, we employed X-ray fluorescence spectroscopy (XRF) to investigate the penetration and transport of foliar-applied Ca, using strontium (Sr) as a physiological tracer. Based on the prevailing paradigm that Ca is largely immobile in the phloem, we evaluated the influence of osmotic regulators, sucrose, mannitol, glycerol, and potassium, on Ca transport. Results showed that Sr was effectively translocated to distal tissues. While potassium and mannitol had no significant impact on transport kinetics, sucrose and glycerol showed a trend toward enhancing Sr movement. XRF imaging of leaf tissue revealed that Sr was primarily transported through the apoplast toward the leaf margin. Moreover, foliar application of Sr combined with sucrose significantly increased Sr accumulation in seeds and in the apical portion of tomato fruits. These findings suggest that sucrose has the potential to actively enhance foliar-applied Ca mobility by acting as an osmotic regulator, accelerating short-range apoplastic movement within leaf tissues and long-distance systemic translocation to the fruit.<\/jats:p>","DOI":"10.1093\/jxb\/erag460","type":"journal-article","created":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T11:21:13Z","timestamp":1789384873000},"source":"Crossref","is-referenced-by-count":2,"title":["Unveiling Foliar-Applied Calcium Translocation in Tomato: Evidence from Leaf-to-Fruit Movement Using Strontium Tracer"],"prefix":"10.1093","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9782-4414","authenticated-orcid":false,"given":"Eduardo","family":"Santos","sequence":"first","affiliation":[{"name":"Laborat\u00f3rio de Instrumenta\u00e7\u00e3o Nuclear, Centro de Energia Nuclear na Agricultura, Universidade de S\u00e3o Paulo , Piracicaba, SP ,","place":["Brazil"]},{"name":"Canadian Light Source Inc. , Saskatoon, SK, S7N 2V3 ,","place":["Canada"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1375-2351","authenticated-orcid":false,"given":"Gabriel Sgarbiero","family":"Montanha","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Instrumenta\u00e7\u00e3o Nuclear, Centro de Energia Nuclear na Agricultura, Universidade de S\u00e3o Paulo , Piracicaba, SP ,","place":["Brazil"]},{"name":"Department of Biology and Biotechnology Charles Darwin, Sapienza University of Rome , 00185 Rome ,","place":["Italy"]},{"name":"European Synchrotron Radiation Facility , 71 Av. Des Martyrs, 38000 Grenoble ,","place":["France"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Higor Jos\u00e9 F A","family":"da Silva","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Instrumenta\u00e7\u00e3o Nuclear, Centro de Energia Nuclear na Agricultura, Universidade de S\u00e3o Paulo , Piracicaba, SP ,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicolas Gustavo da Cruz","family":"da Silva","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Instrumenta\u00e7\u00e3o Nuclear, Centro de Energia Nuclear na Agricultura, Universidade de S\u00e3o Paulo , Piracicaba, SP ,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Felipe Sousa","family":"Franco","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Instrumenta\u00e7\u00e3o Nuclear, Centro de Energia Nuclear na Agricultura, Universidade de S\u00e3o Paulo , Piracicaba, SP ,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Julia Rossato","family":"Brand\u00e3o","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Instrumenta\u00e7\u00e3o Nuclear, Centro de Energia Nuclear na Agricultura, Universidade de S\u00e3o Paulo , Piracicaba, SP ,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karina Angela Chimbo","family":"Huatatoca","sequence":"additional","affiliation":[{"name":"Canadian Light Source Inc. , Saskatoon, SK, S7N 2V3 ,","place":["Canada"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vinicius Pires","family":"Rezende","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Instrumenta\u00e7\u00e3o Nuclear, Centro de Energia Nuclear na Agricultura, Universidade de S\u00e3o Paulo , Piracicaba, SP ,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alex","family":"Virgilio","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Instrumenta\u00e7\u00e3o Nuclear, Centro de Energia Nuclear na Agricultura, Universidade de S\u00e3o Paulo , Piracicaba, SP ,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chithra","family":"Karunakaran","sequence":"additional","affiliation":[{"name":"Canadian Light Source Inc. , Saskatoon, SK, S7N 2V3 ,","place":["Canada"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karen","family":"Tanino","sequence":"additional","affiliation":[{"name":"Department of Plant Sciences, University of Saskatchewan , Saskatoon, SK, S7N 5A8 ,","place":["Canada"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jos\u00e9","family":"Lavres","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Instrumenta\u00e7\u00e3o Nuclear, Centro de Energia Nuclear na Agricultura, Universidade de S\u00e3o Paulo , Piracicaba, SP ,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0875-3261","authenticated-orcid":false,"given":"Hudson Wallace","family":"Pereira de Carvalho","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Instrumenta\u00e7\u00e3o Nuclear, Centro de Energia Nuclear na Agricultura, Universidade de S\u00e3o Paulo , Piracicaba, SP ,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2026,9,15]]},"container-title":["Journal of Experimental Botany"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/academic.oup.com\/jxb\/advance-article-pdf\/doi\/10.1093\/jxb\/erag460\/71088300\/erag460.pdf","content-type":"application\/pdf","content-version":"am","intended-application":"syndication"},{"URL":"https:\/\/academic.oup.com\/jxb\/advance-article-pdf\/doi\/10.1093\/jxb\/erag460\/71088300\/erag460.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T12:07:41Z","timestamp":1789474061000},"score":1,"resource":{"primary":{"URL":"https:\/\/academic.oup.com\/jxb\/advance-article\/doi\/10.1093\/jxb\/erag460\/8795947"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,9,15]]},"references-count":0,"URL":"https:\/\/doi.org\/10.1093\/jxb\/erag460","relation":{},"ISSN":["0022-0957","1460-2431"],"issn-type":[{"value":"0022-0957","type":"print"},{"value":"1460-2431","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,9,15]]},"article-number":"erag460"}}