{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T23:25:37Z","timestamp":1787959537381,"version":"build-2784847793"},"reference-count":55,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T00:00:00Z","timestamp":1756252800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Fondo de Investigaci\u00f3n del Bosque Nativo","award":["015\/2017"],"award-info":[{"award-number":["015\/2017"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Plants"],"abstract":"<jats:p>The photochemical efficiency of photosystem II (PSII) was monitored in two-year-old seedlings from six Chilean woody sclerophyllous species differing in foliage habits (evergreen, deciduous, semi-deciduous) and leaf orientation. A common garden experiment was established in July 2020 in a Mediterranean-type climate site under two watering regimes (2 L\u22121 seedling\u22121 week\u22121 for 5 months versus no irrigation). Chlorophyll a fluorescence rise kinetics (OJIP) and JIP test analysis were monitored from December 2021 to January 2022. The semi-deciduous Colliguaja odorifera (leaf angle of 65\u00b0) exhibited the highest performance in processes such as absorption and trapping photons, heat dissipation, electron transport, and level of photosynthetic performance (i.e., parameters PIABS FV\/FM, FV\/F0, and \u0394VIP). In contrast, the evergreen Peumus boldus (leaf rolling) exhibited the opposite behavior for the same parameters. On the other hand, the deciduous Vachelia caven (small compound leaves and leaf angle of 15\u00b0) showed the lowest values for minimal and maximal fluorescence (F0 and FM) and the highest area above the OJIP transient (Sm) during the study period. Irrigation decreased Sm and the relative contribution of electron transport (parameter \u0394VIP) by 22% and 17%, respectively, but no clear effects of the irrigation treatments were observed among species and dates of measurement. Overall, V. caven and C. odorifera exhibited the highest photosynthetic performance, whereas P. boldus seemed to be more prone to photoinhibition. We conclude that different foliar adaptations among species influence light protection mechanisms more than irrigation treatments.<\/jats:p>","DOI":"10.3390\/plants14172682","type":"journal-article","created":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T15:49:34Z","timestamp":1756309774000},"page":"2682","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Foliar Traits Drive Chlorophyll Fluorescence Variability in Chilean Sclerophyllous Species Under Early Outplanting Stress"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6073-2778","authenticated-orcid":false,"given":"Sergio","family":"Espinoza","sequence":"first","affiliation":[{"name":"Departamento de Ciencias Forestales, Facultad de Ciencias Agrarias y Forestales, Universidad Cat\u00f3lica del Maule, Talca 3460000, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9939-0381","authenticated-orcid":false,"given":"Carlos","family":"Magni","sequence":"additional","affiliation":[{"name":"CESAF, Facultad de Ciencias Forestales y de la Conservaci\u00f3n de la Naturaleza, Universidad de Chile, Santiago 8820808, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marco","family":"Y\u00e1\u00f1ez","sequence":"additional","affiliation":[{"name":"College of Forestry, Agriculture, and Natural Resources, University of Arkansas at Monticello, 110 University Ct, Monticello, AR 71656, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicole","family":"Toro","sequence":"additional","affiliation":[{"name":"CESAF, Facultad de Ciencias Forestales y de la Conservaci\u00f3n de la Naturaleza, Universidad de Chile, Santiago 8820808, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6737-4785","authenticated-orcid":false,"given":"Eduardo","family":"Mart\u00ednez-Herrera","sequence":"additional","affiliation":[{"name":"CESAF, Facultad de Ciencias Forestales y de la Conservaci\u00f3n de la Naturaleza, Universidad de Chile, Santiago 8820808, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,8,27]]},"reference":[{"key":"ref_1","unstructured":"IPCC (2022). 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