Abstract
Seagrasses are vulnerable to climate change, although photoprotective mechanisms through photopigment rearrangement, have been detected to avoid photoinhibition and photooxidative stress at high temperatures. Posidonia oceanica, endemic to the Mediterranean Sea, is not an exception. Leaf bleaching has been associated to temperature but how it affects seagrass viability is still unknown. Through a depth-cross-transplantation experiment in Cyprus, we explored the role of temperature and irradiance in determining bleaching onset and analyzed changes in photopigments after transplantation. Unexpectedly, after three months, leaf bleaching did not increase in plants transplanted to a different depth from the origin (e.g. from -10 to -30). Rather, higher bleaching was found when cuttings were kept at their origin depth (i.e. -10m), likely indicating that light and temperature are not the main drivers of this phenomenon. Photopigment rearrangement at different light and temperature conditions suggested that usual photoprotective mechanisms, used by the plant to respond to environmental stressors, are preserved despite the presence of bleaching. Understanding this phenomenon has become pivotal to predict the performance of P. oceanica in a changing Mediterranean Sea.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 4
Claim · model-written summary
Bleaching did not increase after transplantation to a different depth.
- Taxon
- Posidonia oceanica
.jpg?width=60)
Posidonia oceanicat0 - Treatment
- transplanted to a different depthe0
- Outcome
- leaf bleachinge0
- Direction
- did not increasee0
- Qualifier
- after three monthse0
- Comparator
- origine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“after three months, leaf bleaching did not increase in plants transplanted to a different depth from the origin (e.g. from -10 to -30)”
t0“Posidonia oceanica”
Claim · model-written summary
Bleaching was higher when cuttings remained at their origin depth.
- Taxon
- Posidonia oceanicaPosidonia oceanicat0
- Organ / stage
- cuttingse0
- Outcome
- bleachinge0
- Direction
- highere0
- Qualifier
- origin depth (i.e. -10m)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher bleaching was found when cuttings were kept at their origin depth (i.e. -10m)”
t0“Posidonia oceanica”
Claim · model-written summary
The authors inferred that light and temperature likely were not the main bleaching drivers.
- Taxon
- Posidonia oceanicaPosidonia oceanicat0
- Outcome
- this phenomenone0
- Qualifier
- light and temperature are not the main driverse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“likely indicating that light and temperature are not the main drivers of this phenomenon”
t0“Posidonia oceanica”
Claim · model-written summary
Photopigment rearrangement suggested preservation of usual photoprotection despite bleaching.
- Taxon
- Posidonia oceanicaPosidonia oceanicat0
- Outcome
- usual photoprotective mechanismse0
- Qualifier
- despite the presence of bleachinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photopigment rearrangement at different light and temperature conditions suggested that usual photoprotective mechanisms, used by the plant to respond to environmental stressors, are preserved despite the presence of bleaching”
t0“Posidonia oceanica”