Data Sheet 1_Intermittent versus continuous drought: chlorophyll a fluorescence reveals photosystem resilience in tomato.pdf
Introduction<p>Recurrent drought threatens Mediterranean tomato yields, yet how the time-scale of drought shapes photochemical tolerance remains unclear.</p>Methods<p>We evaluated six genotypes, three commercial cultivars (‘Sintonía’, ‘Marejada’, ‘Valenciano’) and three Mediterrane...
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2025
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| _version_ | 1849927644688154624 |
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| author | Jesús D. Peco (22674821) |
| author2 | Ana Centeno (9204020) Rubén Moratiel (22674824) Jaime Villena (22674827) Jesús A. López-Perales (22674830) Marta M. Moreno (22674833) David Pérez–López (22674836) |
| author2_role | author author author author author author |
| author_facet | Jesús D. Peco (22674821) Ana Centeno (9204020) Rubén Moratiel (22674824) Jaime Villena (22674827) Jesús A. López-Perales (22674830) Marta M. Moreno (22674833) David Pérez–López (22674836) |
| author_role | author |
| dc.creator.none.fl_str_mv | Jesús D. Peco (22674821) Ana Centeno (9204020) Rubén Moratiel (22674824) Jaime Villena (22674827) Jesús A. López-Perales (22674830) Marta M. Moreno (22674833) David Pérez–López (22674836) |
| dc.date.none.fl_str_mv | 2025-11-24T13:30:34Z |
| dc.identifier.none.fl_str_mv | 10.3389/fpls.2025.1699777.s001 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/dataset/Data_Sheet_1_Intermittent_versus_continuous_drought_chlorophyll_a_fluorescence_reveals_photosystem_resilience_in_tomato_pdf/30694907 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Plant Biology Solanum lycopersicum drought resilience water stress OJIP profile photosystem II chlorophyll a fluorescence stress integral Mediterranean landraces |
| dc.title.none.fl_str_mv | Data Sheet 1_Intermittent versus continuous drought: chlorophyll a fluorescence reveals photosystem resilience in tomato.pdf |
| dc.type.none.fl_str_mv | Dataset info:eu-repo/semantics/publishedVersion dataset |
| description | Introduction<p>Recurrent drought threatens Mediterranean tomato yields, yet how the time-scale of drought shapes photochemical tolerance remains unclear.</p>Methods<p>We evaluated six genotypes, three commercial cultivars (‘Sintonía’, ‘Marejada’, ‘Valenciano’) and three Mediterranean landraces (‘82’, ‘264’, ‘260’, under greenhouse conditions. Plants received either two short pulses (WS1) or a single prolonged drought (WS2). We tracked stem water potential (Ψ<sub>stem</sub>) and computed a stress integral (SI), and measured gas exchange, leaf chlorophyll, and chlorophyll a fluorescence (OJIP test) across key time points and after rewatering.</p>Results<p>The first WS1 pulse transiently increased performance index (PI<sub>ABS</sub>) and electron‑transport efficiencies (Ψ<sub>E0</sub>, ϕ<sub>E0</sub>) by 20–40 % in four cultivars. Photosynthesis declined by –70 to –80 % but recovered within three days of irrigation. ‘Sintonía’ showed early increases in dissipation (ϕ<sub>D0</sub>) and fluxes (ABS/CS<sub>0</sub>, DI<sub>0</sub>/CS<sub>0</sub>), while maximum quantum yield (ϕ<sub>P0</sub>) remained unchanged across genotype. Sustained WS2, however, reduced PI<sub>ABS</sub> and ϕ<sub>P0</sub> by –18 to –50 %, increased ϕ<sub>D0</sub>, ABS/CS<sub>0</sub> and DI<sub>0</sub>/CS<sub>0</sub> by 30–60 % in all except ‘260’, whose OJIP profile remained stable. Photosynthesis dropped near zero but recovered in five genotypes; ‘264’ recovered only 50 %, showing irreversible damage. Chlorophyll content stayed constant, so shifts were pigment‑independent.</p>Discussion<p>Findings support a three-stage resilience model: (i) reversible photoprotective adjustment to short severe drought; (ii) cumulative photochemical damage under sustained deficit; and (iii) genotype-dependent recovery.</p>Conclusion<p>Combining temporal stress integrals with OJIP screening provides a robust pipeline for breeding Mediterranean tomatoes adapted to future drought, advancing knowledge of drought resilience mechanisms.</p> |
| eu_rights_str_mv | openAccess |
| id | Manara_a7f5dae23b3b43001d0ed34cfe5b42e7 |
| identifier_str_mv | 10.3389/fpls.2025.1699777.s001 |
| network_acronym_str | Manara |
| network_name_str | ManaraRepo |
| oai_identifier_str | oai:figshare.com:article/30694907 |
| publishDate | 2025 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Data Sheet 1_Intermittent versus continuous drought: chlorophyll a fluorescence reveals photosystem resilience in tomato.pdfJesús D. Peco (22674821)Ana Centeno (9204020)Rubén Moratiel (22674824)Jaime Villena (22674827)Jesús A. López-Perales (22674830)Marta M. Moreno (22674833)David Pérez–López (22674836)Plant BiologySolanum lycopersicumdrought resiliencewater stressOJIP profilephotosystem IIchlorophyll a fluorescencestress integralMediterranean landracesIntroduction<p>Recurrent drought threatens Mediterranean tomato yields, yet how the time-scale of drought shapes photochemical tolerance remains unclear.</p>Methods<p>We evaluated six genotypes, three commercial cultivars (‘Sintonía’, ‘Marejada’, ‘Valenciano’) and three Mediterranean landraces (‘82’, ‘264’, ‘260’, under greenhouse conditions. Plants received either two short pulses (WS1) or a single prolonged drought (WS2). We tracked stem water potential (Ψ<sub>stem</sub>) and computed a stress integral (SI), and measured gas exchange, leaf chlorophyll, and chlorophyll a fluorescence (OJIP test) across key time points and after rewatering.</p>Results<p>The first WS1 pulse transiently increased performance index (PI<sub>ABS</sub>) and electron‑transport efficiencies (Ψ<sub>E0</sub>, ϕ<sub>E0</sub>) by 20–40 % in four cultivars. Photosynthesis declined by –70 to –80 % but recovered within three days of irrigation. ‘Sintonía’ showed early increases in dissipation (ϕ<sub>D0</sub>) and fluxes (ABS/CS<sub>0</sub>, DI<sub>0</sub>/CS<sub>0</sub>), while maximum quantum yield (ϕ<sub>P0</sub>) remained unchanged across genotype. Sustained WS2, however, reduced PI<sub>ABS</sub> and ϕ<sub>P0</sub> by –18 to –50 %, increased ϕ<sub>D0</sub>, ABS/CS<sub>0</sub> and DI<sub>0</sub>/CS<sub>0</sub> by 30–60 % in all except ‘260’, whose OJIP profile remained stable. Photosynthesis dropped near zero but recovered in five genotypes; ‘264’ recovered only 50 %, showing irreversible damage. Chlorophyll content stayed constant, so shifts were pigment‑independent.</p>Discussion<p>Findings support a three-stage resilience model: (i) reversible photoprotective adjustment to short severe drought; (ii) cumulative photochemical damage under sustained deficit; and (iii) genotype-dependent recovery.</p>Conclusion<p>Combining temporal stress integrals with OJIP screening provides a robust pipeline for breeding Mediterranean tomatoes adapted to future drought, advancing knowledge of drought resilience mechanisms.</p>2025-11-24T13:30:34ZDatasetinfo:eu-repo/semantics/publishedVersiondataset10.3389/fpls.2025.1699777.s001https://figshare.com/articles/dataset/Data_Sheet_1_Intermittent_versus_continuous_drought_chlorophyll_a_fluorescence_reveals_photosystem_resilience_in_tomato_pdf/30694907CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/306949072025-11-24T13:30:34Z |
| spellingShingle | Data Sheet 1_Intermittent versus continuous drought: chlorophyll a fluorescence reveals photosystem resilience in tomato.pdf Jesús D. Peco (22674821) Plant Biology Solanum lycopersicum drought resilience water stress OJIP profile photosystem II chlorophyll a fluorescence stress integral Mediterranean landraces |
| status_str | publishedVersion |
| title | Data Sheet 1_Intermittent versus continuous drought: chlorophyll a fluorescence reveals photosystem resilience in tomato.pdf |
| title_full | Data Sheet 1_Intermittent versus continuous drought: chlorophyll a fluorescence reveals photosystem resilience in tomato.pdf |
| title_fullStr | Data Sheet 1_Intermittent versus continuous drought: chlorophyll a fluorescence reveals photosystem resilience in tomato.pdf |
| title_full_unstemmed | Data Sheet 1_Intermittent versus continuous drought: chlorophyll a fluorescence reveals photosystem resilience in tomato.pdf |
| title_short | Data Sheet 1_Intermittent versus continuous drought: chlorophyll a fluorescence reveals photosystem resilience in tomato.pdf |
| title_sort | Data Sheet 1_Intermittent versus continuous drought: chlorophyll a fluorescence reveals photosystem resilience in tomato.pdf |
| topic | Plant Biology Solanum lycopersicum drought resilience water stress OJIP profile photosystem II chlorophyll a fluorescence stress integral Mediterranean landraces |