The DNA content of trophozoites and cysts of Giardia lamblia by microdensitometric quantitation of Feulgen staining and examination by laser scanning confocal microscopy.

The DNA content of trophozoites and cysts of Giardia lamblia by microdensitometric quantitation of Feulgen staining and examination by laser scanning confocal microscopy.
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通过福尔根染色的微光密度定量和激光扫描共聚焦显微镜检查,检测贾第鞭毛虫滋养体和包囊的 DNA 含量。

DOI:
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发表时间:
1994
影响因子:
3.2
通讯作者:
Ellen M. Rasch
Ellen M. Rasch
中科院分区:
生物学3区
文献类型:
--
作者:
S. L. Erlandsen;Ellen M. Rasch

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我们研究了通过 Feulgen 显微分光光度法定量以及通过激光扫描共聚焦显微镜对分裂细胞内 Feulgen 染色的 DNA 染色体进行可视化来直接测量寄生肠道鞭毛虫兰氏贾第鞭毛虫的 DNA 含量。贾第鞭毛虫(双核)的单个滋养体含有 0.144 +/- 0.018 pg DNA/细胞或 0.072 pg DNA/细胞核。贾第鞭毛虫包囊(四核)含有 0.313 +/- 0.003 pg DNA 或 0.078 pg DNA/核。滋养体和包囊的每个核的基因组大小 (C) 值分别在 6.5-7.1 x 10(7) BP 之间。对经历二元裂变的贾第鞭毛虫滋养体进行共聚焦显微镜检查,发现每个核内有五个染色体样体。有关不同贾第鞭毛虫物种的基因组大小和 DNA 含量的更多信息可能有助于阐明这些原始真核细胞在进化发展中的关键作用。
We investigated direct measurement of the DNA content of the parasitic intestinal flagellate Giardia lamblia through quantitation by Feulgen microspectrophotometry and also by visualization of Feulgen-stained DNA chromosomes within dividing cells by laser scanning confocal microscopy. Individual trophozoites of Giardia (binucleate) contained 0.144 +/- 0.018 pg of DNA/cell or 0.072 pg DNA/nucleus. Giardia lamblia cysts (quadranucleate) contained 0.313 +/- 0.003 pg DNA or 0.078 pg DNA/nucleus. The genome size (C) value per nucleus ranged between 6.5-7.1 x 10(7) BP for trophozoites and cysts, respectively. Confocal microscopic examination of Giardia trophozoites undergoing binary fission revealed five chromosome-like bodies within each nucleus. Further information about genome size and DNA content within different Giardia species may help to clarify the pivotal role of these primitive eukaryotic cells in evolutionary development.
原位分析表明贾第鞭毛虫的两个细胞核是等效的。
DOI: 10.1242/jcs.95.3.353
发表时间: 1990
影响因子: 4
作者:
Kabnick,KS;Peattie,DA
通讯作者: Peattie,DA
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DOI: 10.1096/fasebj.7.1.8422968
发表时间: 1993
期刊: FASEB journal : official publication of the Federation of American Societies for Experimental Biology
影响因子: --
作者:
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