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首页> 外文期刊>Protoplasma: An International Journal of Cell Biology >Development of carotenoid storage cells in Bixa orellana L. seed arils
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Development of carotenoid storage cells in Bixa orellana L. seed arils

机译：Bixa orellana L.种子假种皮中类胡萝卜素贮藏细胞的发育

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The arils of Bixa orellana L. seeds contain carotenoid storage cells (CSCs). The main compounds in these cells include bixin and norbixin, which are important pigments in the food and pharmaceutical industries. Although many studies have been conducted on these chemical constituents, the cellular events that occur during the development of the carotenoid-accumulating cells in the arils and their relationship with the final carotenoid accumulation in the vacuoles remain unknown. In this study, the development of the CSCs in B. orellana arils was analyzed by light and transmission electron microscopy. Carotenoids formed in specialized cells, whose number and size increased during aril development. At various stages of development, the cytoplasm of the CSCs contained chromoplasts that held an extensive network of tubules and plastoglobules. Next to the chromoplasts, lipid droplets may fuse one another to form osmiophilic bodies. In addition, vesicles were observed next to the tonoplast. At the final stages of development, both the osmiophilic bodies and vesicles, which became quadrangular or rectangular, were stored in the vacuoles of the CSCs. This study reported for the first time the occurrence of different storage unit types within the vacuole of carotenoid storage cells.
机译：Bixa orellana L.种子的假种皮中含有类胡萝卜素存储细胞（CSC）。这些细胞中的主要化合物包括联欣和去甲联蛋白，它们是食品和制药行业中的重要色素。尽管已经对这些化学成分进行了许多研究，但假种皮中类胡萝卜素积累细胞发育过程中发生的细胞事件以及它们与液泡中最终类胡萝卜素积累的关系仍然未知。在这项研究中，通过光镜和透射电镜分析了B. orellana假种皮中CSC的发育。类胡萝卜素形成于专门的细胞中，其数量和大小在假种皮发育过程中增加。在发育的各个阶段，CSC的细胞质中含有色细胞，这些细胞具有广泛的肾小管和质小球网络。脂质体旁边可能会发生质膜的融合，形成亲油性体。另外，在液泡膜旁边观察到囊泡。在发育的最后阶段，变成四边形或矩形的亲脂性小体和囊泡都被储存在CSC的液泡中。这项研究首次报道了类胡萝卜素存储细胞液泡中不同存储单元类型的发生。

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