ORIGIN AND DEVELOPMENT OF PROTEIN GRANULES IN MAIZE ENDOSPERM
ORIGIN AND DEVELOPMENT OF PROTEIN GRANULES IN MAIZE ENDOSPERM
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玉米胚乳中蛋白质颗粒的起源和发育
DOI：
10.1002/j.1537-2197.1970.tb09907.x
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发表时间：
1970
期刊：
影响因子：
--
通讯作者：
M. J. Wolf
中科院分区：
文献类型：
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作者：
U. Khoo;M. J. Wolf
用光学显微镜和电子显微镜研究了正常玉米（自交系W 46 A）淀粉胚乳中蛋白质颗粒的发育。第一次观察到的颗粒授粉后12天的球形存款，通常是单一的，在一个封闭的膜。它们由内质网产生的小泡发育而成，既有小的局部脑池扩张，也有内质网末端的扩大。网质体似乎也增殖蛋白质颗粒囊泡。聚集在颗粒中的蛋白质似乎是在膜外合成的。一旦开始，颗粒的大小和数量迅速增加的核心发展;其最终直径范围高达2 IA。未成熟的颗粒在水溶液中被各种生物染料以及金属染料染色;成熟的颗粒轻微染色或根本不染色。籽粒成熟时，蛋白质颗粒嵌入蛋白质中
Protein granule development in the starchy endosperm of normal maize (inbred line, W46A) was studied with optical and electron microscopy. The granules were first observed 12 days after pollination as spherical deposits, usually single, within an enclosing membrane. They developed from vesicles produced by the endoplasmic reticulum and were formed both as small localized cisternal dilations and as enlargements at the ends of endoplasmic reticulum. Dictyosomes also appear to proliferate protein granule vesicles. The protein accumulated in the granules appears to be synthesized outside the membranes. Once initiated, the granules rapidly increase in size and number as the kernel develops; their final diameter ranges up to 2 IA. Immature granules stain with a variety of biological dyes in aqueous solution as well as with metal stains; mature granules stain lightly or not at all. At kernel maturity, the protein granules are embedded in a protein