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1
題名:Subcellular Localization of Calcium in the Crystal-Forming Sclereids of Nymphaea tetragona Georgi    
睡蓮含晶體之厚壁細胞內鈣的次細胞定位
著者:Ling-Long Kuo-Huang(黃玲瓏) ;Shiang-Jiuun CHEN(陳香君)
出版地區:台灣
出版城市:台北市
學科:生命科學
刊名:Taiwania
卷期:44卷4期(1999.12)
頁碼:520-528
語言:英語
摘要: 中文摘要PDF ; 英文摘要PDF

本研究是透過織酸/焦娣酸針( OTPA) 與細胞內鈣離子作用產生微細沉澱,再經 由電子顯微鏡技術的觀察,來探究睡蓮(均lmphaea tetragona Georgi) 葉部厚壁細胞發 育過程中,鈣離子的次細胞定位。在葉片柵狀組織之葉肉薄壁細胞內,焦錦酸鈣的沉 澱物分佈於細胞膜與細胞壁之間、細胞核、粒線體、液胞、內質網、高爾基氏體及分 泌囊胞內。厚壁細胞分散地始源自未分化的葉肉薄壁細胞,許多結晶腔位於其初生細 胞壁與細胞膜之間。晶體鞘膜包圍草酸鈣晶體,並與細胞膜相連接。厚壁始源細胞 內,微細的鈣沉澱物主要密集地堆積於晶體鞘膜上,但在中央液胞內,則只可觀察到 少許鈣的沉澱物。厚壁細胞之細胞壁內的晶體形成後,即進行次生細胞壁的堆積,並 將晶體包坦於初生與次生細胞壁之間。成熟厚壁細胞的液胞內、細胞脹、初生細胞壁 及晶體鞘膜上均可明顯觀察到焦錚酸鈣的沉澱物。
By using a modified osmium tetroxide-potassium pyroantimonate (OTPA) precipitation technique, calcium ions were subcellularly localized in the crystal-forming sc1ereids of the leaf of Nymphaea tetragona Georgi. In young leaf laminae, the mesophyll parenchyma cells contained calcium antimonate precipitates in the vacuoles, mitochondria, nuc1ei, endoplasmic reticulum, dictyosome and the secretary vesic1es. Besides, calcium precipitates were also associated with the plasmalemma and plasmodesmata. From the rudimentary mesophyll cells, the sc1ereid idioblasts originated sporadically. In these sc1ereid initial cells, many prismatic oxalate crystals bounded by the crystal sheaths were observed in the crystal chambers between the plasmalemma and primary cell wall. The calcium antimonate precipitates were densely presented on the crystal sheaths, however, only few calcium precipitates were found in the central vacuoles ofthe sclereid initial cells. After the formation of crystals, the secondary wall was deposited and then the crystals were embedded between the primary and secondary cell walls. In the mature sc1 ere祠, calcium antimonate precipitates were obviously associated with the crystal sheaths, primary cell wall, plasmalemma, and also accumulated in the central vacuole.


    

本卷期目次
Taiwania 44卷4期 (1999.12)
Eastern Asia as a Living Museum for Archaic Angiosperms and Other Seed Plants/ Robert F. Thorne
Eocene Angiospermous Palynomorphs of Taiwan/ Cheng-Long Shaw
Expression and Characterization of Rice Manganese Superoxide Dismutase in Escherichia coli/ Yin-Chen TzengShu-Mei Pan
Variation in Heat Shock Protein Synthesis and Genomic Diversity in the Natural Population of Aspergillus fumigatus in Northern Taiwan/ Kuei-Yu ChenZuei-Ching Chen
Notes on Puccinia Species on Cyperaceae in Taiwan/ Huang-Chi KuoZuei-Ching Chen
Two New Naturalized Grasses in Taiwan/ Chang-Sheng KuohGow-Ing LiaoMing-Yih Chen
Subcellular Localization of Calcium in the Crystal-Forming Sclereids of Nymphaea tetragona Georgi/ Ling-Long Kuo-HuangShiang-Jiuun CHEN
Sonerila Roxb. (Melastomataceae), a N ew Generic Record for the Flora of Taiwan/ Tsung-Hsin HsiehKuoh-Cheng Yang
 
   
 
   

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