Locus-specific Changes in Cell Wall Composition Characteristic of Osmotic Mutants of Neurospora crassa
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چکیده
منابع مشابه
Structure and composition of the cell wall of Neurospora crassa.
The structure and composition of the cell walls of hyphae of Neurospora crassa were investigated by electron microscopy, chemical analysis, and X-ray diffraction both before and after progressive enzymatic degradation by snail gut enzymes, chitinase, and trypsin. The wall consists of two phases: randomly disposed skeletal microfibrils of chitin only and an amorphous matrix which contains both b...
متن کاملMutants of NEUROSPORA CRASSA Permeable to Histidinol.
I N Neurospora, L-histidinol is the immediate precursor of L-histidine, as shown by the isolation of L-histidinol dehydrogenase and the study of its catalytic functions (AMES 1957; CREASER, BENNETT and DRYSDALE 1965). The failure of histidine mutants, with the histidinol dehydrogenase function intact, to grow on histidinol, suggests that histidinol cannot enter the cell. However, CATCHESIDE ( 1...
متن کاملUltraviolet-sensitive mutants in Neurospora crassa.
ADIATION-SENSITIVE mutants in bacteria have been reported repeatedly in recent years (s,ee SETLOW 1966). Several loci concerned with sensitivity have been mapped. Some of these mutants not only lacked the ability to repair damaged DNA but also failed to undergo genetic recombination (CLARK and MARGULIES 1965; HOWARD-FLANDERS and THERIOT 1966; VAN DE PUTTE et al. 1966). Among the eucaryotic orga...
متن کاملMutants affecting thymidine metabolism in Neurospora crassa.
When (14)C-thymidine labeled only in the ring is administered to Neurospora crassa, the majority of the recovered label is found in the ribonucleic acid (RNA). Three mutants were isolated in which different steps are blocked in the pathway that converts the pyrimidine ring of thymidine to an RNA precursor. Evidence from genetic, nutritional, and accumulation studies with the three mutants shows...
متن کاملIsolation, characterization, and genetic analysis of osmotic mutants of Neurospora crassa.
O S M O T I C (os) mutants of N . crassa are those whose growth is inhibited by high osmolalities. The usual operational definition is inhibition of growth of the mutant strains by the addition of 4% NaCl to the growth medium (PERKINS 1959). Prior to the present investigation, a group of os mutants had been mapped on linkage group IR, at approximately 90 map units from the centromere (PERKINS 1...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1969
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.99.1.85-90.1969