Dosage of the smallest chromosome affects both the yeast-hyphal transition and the white-opaque transition of Candida albicans WO-1

Dosage of the smallest chromosome affects both the yeast-hyphal transition and the white-opaque transition of Candida albicans WO-1
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最小染色体的剂量影响白色念珠菌 WO-1 的酵母-菌丝转变和白色-不透明转变

DOI:
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发表时间:
1991
影响因子:
3.2
通讯作者:
James W. Hicks
James W. Hicks
中科院分区:
生物学3区
文献类型:
--
作者:
M. J. McEachern;James W. Hicks

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白色念珠菌的WO-1菌株能够在称为白色和不透明(E. H. A.里克林克,B。B。Magee和P.T. Magee,J. Bacteriol. 170:895-899,1988; B. Slutsky,M. Staebell,J.安德森,L. Risen,M. Pfaller和D. R. Soll,J. Bacteriol. 169:189-197,1987)。我们已经分离出WO-1突变体,它们在通常有利于这种转变的条件下从白色形式转变为不透明形式方面表现出明显的缺陷。脉冲场电泳表明,最初的两个自发的非转换突变体之一缺乏最小的染色体,通常存在于WO-1。WO-1衍生物的可用性,其唯一的功能性ADE 2基因位于该小染色体上,通过诱导染色体不分离,可以分离出许多缺失该染色体的新突变体以及含有两个拷贝的染色体的突变体。缺失最小染色体的突变体在人血清存在下产生不透明扇区和产生芽管的能力大大降低。含有两个小染色体拷贝的突变体显示出产生芽管的能力增加。这些结果表明,这个小染色体携带一个或多个基因参与白色不透明开关和酵母菌丝开关。
The WO-1 strain of Candida albicans is capable of alternating between two highly distinct yeast cell types termed white and opaque (E. H. A. Rikkerrink, B. B. Magee, and P. T. Magee, J. Bacteriol. 170:895-899, 1988; B. Slutsky, M. Staebell, J. Anderson, L. Risen, M. Pfaller, and D. R. Soll, J. Bacteriol. 169:189-197, 1987). We have isolated WO-1 mutants that show a marked deficiency at being able to switch from the white form to the opaque form under conditions normally favorable for this transition. Pulsed-field electrophoresis demonstrated that one of the initial two spontaneous nonswitching mutants lacked the smallest chromosome that is normally present in WO-1. The availability of a WO-1 derivative whose only functional ADE2 gene is located on this small chromosome made possible, through the induction of chromosome nondisjunction, the isolation of numerous new mutants missing this chromosome as well as mutants containing two copies of the chromosome. Mutants missing the smallest chromosome showed a greatly diminished ability to produce opaque sectors and to produce germ tubes in the presence of human serum. Mutants containing two copies of the small chromosome showed an increased ability to produce germ tubes. These results indicate that this small chromosome carries one or more genes involved in both the white-opaque switch and the yeast-hyphal switch.
白色念珠菌生长缓慢、不发芽变种的表型特征。
DOI: 10.1099/00221287-132-8-2359
发表时间: 1986
期刊: Journal of general microbiology
影响因子: --
作者:
Howard,DH;Zeuthen,ML;Dabrowa,N
通讯作者: Dabrowa,N
DOI: 10.1128/mmbr.54.3.226-241.1990
发表时间: 1990-09
期刊: Microbiological reviews
影响因子: --
作者:
Stewart;'. Scherer;A. P. T. Magee
通讯作者: Stewart;'. Scherer;A. P. T. Magee
通过脉冲场凝胶电泳技术分离白色念珠菌染色体大小 DNA 的比较。
DOI: 10.1093/nar/17.10.3783
发表时间: 1989
影响因子: 14.9
作者:
Lasker,BA;Carle,GF;Kobayashi,GS;Medoff,G
通讯作者: Medoff,G
DOI: 10.1099/00221287-135-5-1201
发表时间: 1989-05
期刊: Journal of general microbiology
影响因子: --
作者:
Brian Morrow;Julia M. Anderson;Jane Wilson;D. Soll
通讯作者: Brian Morrow;Julia M. Anderson;Jane Wilson;D. Soll