DEVELOPMENT OF ALEURONE AND SUB-ALEURONE-LAYERS IN MAIZE
DEVELOPMENT OF ALEURONE AND SUB-ALEURONE-LAYERS IN MAIZE
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DOI：
10.1007/bf00388149
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发表时间：
1977-01-01
期刊：
影响因子：
4.3
通讯作者：
STYLES, ED
中科院分区：
文献类型：
--
作者：
KYLE, DJ;STYLES, ED
EM研究表明，玉米(Zea Mays L.)在授粉后大约10-15天开始发育，大约需要40天糊粉完全成熟。当靠近母质珠心层的特化胚乳细胞开始分化时，发育就开始了。分化的特征是糊粉蛋白体和球体的形成。糊粉层的蛋白质小体具有液泡起源，而紧邻胚乳细胞的蛋白质小体似乎是从粗面内质网的突起发育而来。因此，在这些相邻的组织中存在两种形态和发育上不同类型的蛋白体。糊粉层的球体在该组织发育的早期形成，随着组织的成熟数量增加。在成熟的最后阶段，这些球体与糊粉粒和质膜紧密相对。授粉40d后颖果开始脱水，糊粉细胞结构无明显变化。
EM studies indicate that the aleurone tissue of maize (Zea mays L.) starts developing approximately 10-15 days after pollination in stocks that take approximately 40 days for the aleurone to mature completely. Development begins when specialized endosperm cells adjacent to the maternal nucellar layer start to differentiate. Differentiation is characterized by the formation of aleurone protein bodies and spherosomes. The protein bodies of the aleurone layer have a vacuolar origin whereas the protein bodies of the immediate underlying endosperm cells appear to develop from protrusions of the rough endoplasmic reticulum. Thus, 2 morphologically and developmentally distinct types of protein bodies are present in these adjacent tissues. The spherosomes of the aleurone layer form early in the development of this tissue and increase in number as the tissue matures. During the final stages of maturation, these spherosomes become closely apposed to the aleurone grains and the plasma membrane. No further changes are apparent in the structure of the aleurone cells after 40 days from pollination when the caryopsis begins to desiccate.