Segregants from a heterozygous diploid of Penicillium chrysogenum following different physical and chemical treatments.
نویسنده
چکیده
منابع مشابه
Analysis of Vegetative Segregation and Recombination in Penicillium Chrysogenum.
N the basis of an analysis of vegetative segregation in heterozygous diploids of 0 Aspergillus nidulans, PONTECORVO et al. (PONTECORVO 1953 ; PONTECORVO, TARR GLOOR and FORBES 1954) concluded that the segregant nuclei arise as a consequence of two independent processes. The first is mitotic crossing over (STERN 1936), giving rise to diploid nuclei which are homozygous for some of the markers. T...
متن کاملAction of Manganous Chloride on Induced Somatic Segregation in Penicillium Chrysogenum Diploids.
ITROGEN mustard (HN-2), at doses which bring about almost total inactiNvation of the treated conidia, has a powerful stimulating effect on somatic segregation in some heterozygous Penicillium chrysogenum diploids (MORPURGO and SERMONTI 1959). On plating the surviving conidia, color marker segregants appear as yellow or white entire colonies, or yellow or white sectors emerging from the green ph...
متن کاملInduced Somatic Segregation in Aspergillus Nidulans.
ETEROZYGOUS diploid strains of Aspergillus nidulans spontaneously proHduce segregant clones belonging to three classes: diploid segregants which have undergone mitotic crossing over; haploid segregants with random redistribution of whole chromosomes (PONTECORVO, TARR GLOOR and FORBES 1954) ; and "nondisjunctional" segregants with all the markers on both branches of one chromosome in the homozyg...
متن کاملBiochemical properties of haploid and diploid strains of Penicillium chrysogenum.
An intensive parasexual genetics program in which industrial strains of Penicillium chrysogenum were used culminated in the isolation of a number of heterozygous diploid strains. The diploid clones were selected from heterokaryons formed from matings between mutant strains having complementary biochemical and conidial color markers. Several diploid cultures were compared with their haploid wild...
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Production of nanoparticles has been attractive by biological based fabrication as an alternative to physical and chemical approaches due to exceeding need to develop safe, reliable, clean and eco-friendly methods for the preparation of nanoparticle for pharmaceutical and biomedical applications. In the present study, biogenic tellurium nanoparticles (TeNPs) were successfully prepared using pot...
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ورودعنوان ژورنال:
- Journal of general microbiology
دوره 67 2 شماره
صفحات -
تاریخ انتشار 1971