ACKNOWLEDGEMENTS
The authors thank Prof. John C. Priscu (Montana State University) for isolation and donation of the algal strain Chlamydomonas sp. UWO 241 (originally named Chlamydomonas subcaudata ) from Lake Bonney, McMurdo Dry Valleys, Antarctica. The authors thank A. Mills and J. Prutz for assistance with growing cultures and ROS measurements, respectively. RMK, SS and MH were supported by the National Science Foundation, Office of Polar Programs under award #OPP-1056396 (growth physiology, photoinhibition, ROS measurements). IK, AM and SD were supported by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES) under award #DE-SC0019138 (PSI, CEF, Asc measurements). MC is supported by a National Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant RGPIN-2019-05763 and University of Ottawa start-up funding (genome screening).