<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Popson, Devon</style></author><author><style face="normal" font="default" size="100%">D’Silva, Susanna</style></author><author><style face="normal" font="default" size="100%">Wheeless, Kaylie</style></author><author><style face="normal" font="default" size="100%">Rachael M. Morgan-Kiss</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Permanent stress adaptation and unexpected high light tolerance in the shade-adapted &lt;i&gt;Chlamydomonas priscui&lt;/i&gt;</style></title><secondary-title><style face="normal" font="default" size="100%">Plants</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cyclic electron flow</style></keyword><keyword><style  face="normal" font="default" size="100%">environmental change</style></keyword><keyword><style  face="normal" font="default" size="100%">extremophile</style></keyword><keyword><style  face="normal" font="default" size="100%">photo-acclimation</style></keyword><keyword><style  face="normal" font="default" size="100%">photoinhibition</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2024</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/2024</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.mdpi.com/2223-7747/13/16/2254</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">13</style></volume><pages><style face="normal" font="default" size="100%">2254</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The Antarctic photopsychrophile, &lt;i&gt;Chlamydomonas priscui&lt;/i&gt; UWO241, is adapted to extreme environmental conditions, including permanent low temperatures, high salt, and shade. During long-term exposure to this extreme habitat, UWO241 appears to have lost several short-term mechanisms in favor of constitutive protection against environmental stress. This study investigated the physiological and growth responses of UWO241 to high-light conditions, evaluating the impacts of long-term acclimation to high light, low temperature, and high salinity on its ability to manage short-term photoinhibition. We found that UWO241 significantly increased its growth rate and photosynthetic activity at growth irradiances far exceeding native light conditions. Furthermore, UWO241 exhibited robust protection against short-term photoinhibition, particularly in photosystem I. Lastly, pre-acclimation to high light or low temperatures, but not high salinity, enhanced photoinhibition tolerance. These findings extend our understanding of stress tolerance in extremophilic algae. In the past 2 decades, climate change-related increasing glacial stream flow has perturbed long-term stable conditions, which has been associated with lake level rise, the thinning of ice covers, and the expansion of ice-free perimeters, leading to perturbations in light and salinity conditions. Our findings have implications for phytoplankton survival and the response to change scenarios in the light-limited environment of Antarctic ice-covered lakes.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">16</style></issue></record></records></xml>