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| Main Authors: | , , , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Communications biology
2025
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/40473784/ |
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| _version_ | 1868266193706549249 |
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| author | Havurinne, Vesa Rivoallan, Axelle Mattila, Heta Tyystjärvi, Esa Cartaxana, Paulo Cruz, Sónia |
| author_facet | Havurinne, Vesa Rivoallan, Axelle Mattila, Heta Tyystjärvi, Esa Cartaxana, Paulo Cruz, Sónia Havurinne, Vesa Rivoallan, Axelle Mattila, Heta Tyystjärvi, Esa Cartaxana, Paulo Cruz, Sónia |
| collection | PubMed - marine biology |
| contents | Loss of state transitions in Bryopsidales macroalgae and kleptoplastic sea slugs (Gastropoda, Sacoglossa). Havurinne, Vesa Rivoallan, Axelle Mattila, Heta Tyystjärvi, Esa Cartaxana, Paulo Cruz, Sónia Gastropoda Animals Seaweed Chloroplasts Photosynthesis Chlorophyta Light Green macroalgae within the order Bryopsidales lack the fundamental photoprotective mechanisms of green algae, the xanthophyll cycle and energy-dependent dissipation of excess light. Here, by measuring chlorophyll fluorescence at 77 K after specific light treatments, we show that Bryopsidales algae also lack state transitions, another ubiquitous photoprotection mechanism present in other green algae. Certain Sacoglossa sea slugs can feed on Ulvophyceae algae, including some Bryopsidales, and steal chloroplasts - kleptoplasts - that remain functional inside the animal cells for months without the support of the algal nucleus. Our data reveal that the state transition capacity is not retained in the kleptoplasts of the sea slugs, and we provide evidence that the loss is caused by structural changes during their incorporation by the animals. Enforced chloroplast sphericity was observed in all studied kleptoplastic associations, and we propose that it is a fundamental property supporting long-term retention of kleptoplasts in photosynthetic sea slugs. |
| format | Artículo científico |
| id | pubmed_40473784 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Communications biology |
| record_format | pubmed |
| spellingShingle | Loss of state transitions in Bryopsidales macroalgae and kleptoplastic sea slugs (Gastropoda, Sacoglossa). Havurinne, Vesa Rivoallan, Axelle Mattila, Heta Tyystjärvi, Esa Cartaxana, Paulo Cruz, Sónia Gastropoda Animals Seaweed Chloroplasts Photosynthesis Chlorophyta Light Loss of state transitions in Bryopsidales macroalgae and kleptoplastic sea slugs (Gastropoda, Sacoglossa). Havurinne, Vesa Rivoallan, Axelle Mattila, Heta Tyystjärvi, Esa Cartaxana, Paulo Cruz, Sónia Gastropoda Animals Seaweed Chloroplasts Photosynthesis Chlorophyta Light Green macroalgae within the order Bryopsidales lack the fundamental photoprotective mechanisms of green algae, the xanthophyll cycle and energy-dependent dissipation of excess light. Here, by measuring chlorophyll fluorescence at 77 K after specific light treatments, we show that Bryopsidales algae also lack state transitions, another ubiquitous photoprotection mechanism present in other green algae. Certain Sacoglossa sea slugs can feed on Ulvophyceae algae, including some Bryopsidales, and steal chloroplasts - kleptoplasts - that remain functional inside the animal cells for months without the support of the algal nucleus. Our data reveal that the state transition capacity is not retained in the kleptoplasts of the sea slugs, and we provide evidence that the loss is caused by structural changes during their incorporation by the animals. Enforced chloroplast sphericity was observed in all studied kleptoplastic associations, and we propose that it is a fundamental property supporting long-term retention of kleptoplasts in photosynthetic sea slugs. |
| title | Loss of state transitions in Bryopsidales macroalgae and kleptoplastic sea slugs (Gastropoda, Sacoglossa). |
| topic | Gastropoda Animals Seaweed Chloroplasts Photosynthesis Chlorophyta Light |
| url | https://pubmed.ncbi.nlm.nih.gov/40473784/ |