Department of Biology, Pennsylvania State University, University Park, Pennsylvania 16802.
Plant Physiol. 1968 May;43(5):693-7. doi: 10.1104/pp.43.5.693.
Dark grown albescent corn seedlings are deficient in colored carotenoids but accumulate phytoene, phytofluene and an unidentified substance in the carotenol fraction. They bleach upon exposure to bright light and appear albino. Seedlings grown under low level incandescent light are normal in appearance and contain almost as much colored carotenoid as control seedlings. The existing leaf tissue of seedlings grown under low level light does not bleach upon exposure to bright light. The enhanced carotenoid synthesis and stabilization of plastids is not affected by brief illumination with red light but requires several hours of low level incandescent light.
深色生长的白化玉米幼苗缺乏有色类胡萝卜素，但在类胡萝卜醇部分积累了番茄红素、紫黄质和一种未鉴定的物质。它们在暴露于强光下会漂白，呈现白化现象。在低强度白炽灯光下生长的幼苗外观正常，所含有色类胡萝卜素几乎与对照幼苗一样多。在低强度光下生长的幼苗现有的叶片组织在暴露于强光下不会漂白。增强的类胡萝卜素合成和质体的稳定不受短暂的红光照射的影响，但需要几个小时的低强度白炽灯光照射。
