Barry Pogson, Kelly A. McDonald, Maria Truong, George Britton, Dean DellaPenna, Arabidopsis Carotenoid Mutants Demonstrate That Lutein Is Not Essential for Photosynthesis in Higher Plants, The Plant Cell, Vol. 8, No. 9 (Sep., 1996), pp. 1627-1639
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Pogson et al. (1996) studied this question.