Salinity change effects on growth and photosynthetic efficiency of the<i> zooxanthellae Symbiodinium </i>sp. extracted from<i> Platygyra daedalea</i> in Qatar coral reefs
<p dir="ltr">This study investigates the impact of elevated <u>salinity </u>levels on the growth and <u>photosynthetic</u><u> efficiency</u> of the coral <u>endosymbiont Symbiodinium</u> sp. isolated from <i>Platygyra daedalea <...
محفوظ في:
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| مؤلفون آخرون: | , , , , |
| منشور في: |
2025
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| _version_ | 1864513533564157952 |
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| author | Ayesha Siddiqua (6269193) |
| author2 | Charaf Mrabet (22504250) Fehmi Boufahja (18788344) Abdelghafar Abu-Elsaoud (22504253) Ons Kefi-Daly Yahia (22504256) Mohamed Nejib Daly Yahia (22504259) |
| author2_role | author author author author author |
| author_facet | Ayesha Siddiqua (6269193) Charaf Mrabet (22504250) Fehmi Boufahja (18788344) Abdelghafar Abu-Elsaoud (22504253) Ons Kefi-Daly Yahia (22504256) Mohamed Nejib Daly Yahia (22504259) |
| author_role | author |
| dc.creator.none.fl_str_mv | Ayesha Siddiqua (6269193) Charaf Mrabet (22504250) Fehmi Boufahja (18788344) Abdelghafar Abu-Elsaoud (22504253) Ons Kefi-Daly Yahia (22504256) Mohamed Nejib Daly Yahia (22504259) |
| dc.date.none.fl_str_mv | 2025-05-27T12:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1016/j.marpolbul.2025.118187 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Salinity_change_effects_on_growth_and_photosynthetic_efficiency_of_the_i_zooxanthellae_Symbiodinium_i_sp_extracted_from_i_Platygyra_daedalea_i_in_Qatar_coral_reefs/30455900 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Biological sciences Ecology Environmental sciences Ecological applications Symbiodinium sp. Growth rate Hyper salinity Photosynthetic efficiency OJIP protocol Photosystem II (PSII) |
| dc.title.none.fl_str_mv | Salinity change effects on growth and photosynthetic efficiency of the<i> zooxanthellae Symbiodinium </i>sp. extracted from<i> Platygyra daedalea</i> in Qatar coral reefs |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">This study investigates the impact of elevated <u>salinity </u>levels on the growth and <u>photosynthetic</u><u> efficiency</u> of the coral <u>endosymbiont Symbiodinium</u> sp. isolated from <i>Platygyra daedalea </i>in the coral reefs of Qatar. Cultures were exposed to a range of salinities (30–70 psu) over a 11-day<u> incubation period</u> under controlled laboratory conditions. Results revealed a significant decline in cell density and growth rate at salinities above 55 psu. Photosynthetic performance, assessed using the OJIP <u>chlorophyll fluorescence</u> protocol, showed a marked reduction in key parameters—including ABS/RC, DIo/RC, TRo/RC, ETo/RC, Vi, Vj, Mo, and Fv/Fm—at salinities exceeding 55 psu, indicating substantial stress and inactivation of PSII reaction centers. Interestingly, a partial recovery in <u>photosynthetic efficiency</u> was observed at 55 and 60 psu following initial decline. This is the first study to examine the <u>physiological response</u> of Symbiodinium sp. to salinity stress in the Arabian Gulf, providing valuable insights for coral reef restoration initiatives in this high-salinity environment amid ongoing <u>climate change </u>and coastal development.</p><h2>Other Information</h2><p dir="ltr">Published in: Marine Pollution Bulletin<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.marpolbul.2025.118187" target="_blank">https://dx.doi.org/10.1016/j.marpolbul.2025.118187</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_a6ef14f2d1d698c7cc1b90aea67927b6 |
| identifier_str_mv | 10.1016/j.marpolbul.2025.118187 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/30455900 |
| publishDate | 2025 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Salinity change effects on growth and photosynthetic efficiency of the<i> zooxanthellae Symbiodinium </i>sp. extracted from<i> Platygyra daedalea</i> in Qatar coral reefsAyesha Siddiqua (6269193)Charaf Mrabet (22504250)Fehmi Boufahja (18788344)Abdelghafar Abu-Elsaoud (22504253)Ons Kefi-Daly Yahia (22504256)Mohamed Nejib Daly Yahia (22504259)Biological sciencesEcologyEnvironmental sciencesEcological applicationsSymbiodinium sp.Growth rateHyper salinityPhotosynthetic efficiencyOJIP protocolPhotosystem II (PSII)<p dir="ltr">This study investigates the impact of elevated <u>salinity </u>levels on the growth and <u>photosynthetic</u><u> efficiency</u> of the coral <u>endosymbiont Symbiodinium</u> sp. isolated from <i>Platygyra daedalea </i>in the coral reefs of Qatar. Cultures were exposed to a range of salinities (30–70 psu) over a 11-day<u> incubation period</u> under controlled laboratory conditions. Results revealed a significant decline in cell density and growth rate at salinities above 55 psu. Photosynthetic performance, assessed using the OJIP <u>chlorophyll fluorescence</u> protocol, showed a marked reduction in key parameters—including ABS/RC, DIo/RC, TRo/RC, ETo/RC, Vi, Vj, Mo, and Fv/Fm—at salinities exceeding 55 psu, indicating substantial stress and inactivation of PSII reaction centers. Interestingly, a partial recovery in <u>photosynthetic efficiency</u> was observed at 55 and 60 psu following initial decline. This is the first study to examine the <u>physiological response</u> of Symbiodinium sp. to salinity stress in the Arabian Gulf, providing valuable insights for coral reef restoration initiatives in this high-salinity environment amid ongoing <u>climate change </u>and coastal development.</p><h2>Other Information</h2><p dir="ltr">Published in: Marine Pollution Bulletin<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.marpolbul.2025.118187" target="_blank">https://dx.doi.org/10.1016/j.marpolbul.2025.118187</a></p>2025-05-27T12:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1016/j.marpolbul.2025.118187https://figshare.com/articles/journal_contribution/Salinity_change_effects_on_growth_and_photosynthetic_efficiency_of_the_i_zooxanthellae_Symbiodinium_i_sp_extracted_from_i_Platygyra_daedalea_i_in_Qatar_coral_reefs/30455900CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/304559002025-05-27T12:00:00Z |
| spellingShingle | Salinity change effects on growth and photosynthetic efficiency of the<i> zooxanthellae Symbiodinium </i>sp. extracted from<i> Platygyra daedalea</i> in Qatar coral reefs Ayesha Siddiqua (6269193) Biological sciences Ecology Environmental sciences Ecological applications Symbiodinium sp. Growth rate Hyper salinity Photosynthetic efficiency OJIP protocol Photosystem II (PSII) |
| status_str | publishedVersion |
| title | Salinity change effects on growth and photosynthetic efficiency of the<i> zooxanthellae Symbiodinium </i>sp. extracted from<i> Platygyra daedalea</i> in Qatar coral reefs |
| title_full | Salinity change effects on growth and photosynthetic efficiency of the<i> zooxanthellae Symbiodinium </i>sp. extracted from<i> Platygyra daedalea</i> in Qatar coral reefs |
| title_fullStr | Salinity change effects on growth and photosynthetic efficiency of the<i> zooxanthellae Symbiodinium </i>sp. extracted from<i> Platygyra daedalea</i> in Qatar coral reefs |
| title_full_unstemmed | Salinity change effects on growth and photosynthetic efficiency of the<i> zooxanthellae Symbiodinium </i>sp. extracted from<i> Platygyra daedalea</i> in Qatar coral reefs |
| title_short | Salinity change effects on growth and photosynthetic efficiency of the<i> zooxanthellae Symbiodinium </i>sp. extracted from<i> Platygyra daedalea</i> in Qatar coral reefs |
| title_sort | Salinity change effects on growth and photosynthetic efficiency of the<i> zooxanthellae Symbiodinium </i>sp. extracted from<i> Platygyra daedalea</i> in Qatar coral reefs |
| topic | Biological sciences Ecology Environmental sciences Ecological applications Symbiodinium sp. Growth rate Hyper salinity Photosynthetic efficiency OJIP protocol Photosystem II (PSII) |