AUTHOR=Hou Harvey J.M. TITLE=Unidirectional photodamage of pheophytin in photosynthesis JOURNAL=Frontiers in Plant Science VOLUME=4 YEAR=2014 URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2013.00554 DOI=10.3389/fpls.2013.00554 ISSN=1664-462X