United States Department of Agriculture, Purdue University, Lafayette, Indiana 47907.
Plant Physiol. 1968 Aug;43(8):1215-20. doi: 10.1104/pp.43.8.1215.
Shortly after Zea mays L. plants were exposed to (14)CO(2), most of the radioactivity in the kernel occurred in the free monosaccharides, glucose and fructose. Later the proportion of (14)C in sucrose increased and that in the monosaccharides declined. These data have been interpreted as showing that the translocated sugar is hydrolyzed prior to or during its movement into the storage cells of the endosperm. This hydrolysis appears to occur in the "pedicel region" of the kernel. After entry into the endosperm tissue, sucrose was rapidly resynthesized from the monosaccharides prior to its utilization in starch synthesis.
在玉米植株暴露于（14）CO2 之后不久，核仁中大部分放射性出现在游离单糖葡萄糖和果糖中。后来，蔗糖中（14）C 的比例增加，而单糖的比例下降。这些数据表明，转运糖在进入胚乳的储存细胞之前或期间被水解。这种水解似乎发生在核仁的“花梗区域”。进入胚乳组织后，蔗糖在用于淀粉合成之前，很快从单糖重新合成。
