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91.
Ruben Duran 《Mycopathologia》1971,44(2):89-94
Mating experiments between monosporidial lines ofSorosporium consanguineum from Mexico and the Pacific Northwest indicate that incompatibility in theAristida smut is controlled by multiple alleles at one locus. Alleles a1 a2 were demonstrated in a collection from Chihuahua, Mexico onAristida ternipes. It is hypothesized that these alleles also control incompatibility in collections of the smut from western United States. Alleles a1 a3 were detected in a collection from Durango Mexico onAristida divaricata. Apparently, this is the first time multiple alleles have been shown to control heterothallism inS. consanguineum.Scientific Paper No. 3541. Washington Agricultural Experiment Stations, Pullman, Project 1729. 相似文献
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93.
The aim of our studies was to test the effect and role of vitamin E and selenium supplements on yeast cell. In this study, the effects of selenium (Se), vitamin E (Vit. E), and their combination (Se plus Vit. E) on the composition of fatty acids and proteins were examined in Saccharomyces cerevisiae strains WET136 and 522. S. cerevisiae cells were grown up in YEPD medium supplemented with Se, Vit. E or their combination. It was found that the level of stearic acid was increased in all supplemented groups (p<0·05; p<0·001). The content of saturated and unsaturated fatty acids was decreased (p<0·05; p<0·01; p<0·001) in Vit. E and Vit. E plus Se supplemented S. cerevisiae. On the other hand, Se alone caused an increase (p<0·001) in the saturated fatty acids but a decrease (p<0·05; p<0·001) in the unsaturated fatty acids. Total proteins in S. cerevisiae were significantly increased (p<0·001) by Vit. E supplement. There was no significant change observed in S. cerevisiae supplemented with Se. These findings indicate that membrane composition of S. cerevisiae is affected by both Vit. E and Se supplements. © 1997 John Wiley & Sons, Ltd. 相似文献
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van Kuilenburg AB Meijer J Dobritzsch D Lohkamp B Ruitenbeek W Roelofsen J Abeling NG Duran M Buzing C 《Nucleosides, nucleotides & nucleic acids》2008,27(6):809-815
A patient with hematuria was shown to have thymine-uraciluria. The dihydropyrimidine dehydrogenase (DPD) activity in peripheral blood mononuclear cells was 0.16 nmol/mg/h; controls: 9.9 +/- 2.8 nmol/mg/h. Analysis of DPYD showed that the patient was compound heterozygous for the novel mutations 237C > A (C79X) in exon 4 and 704G > A (R235Q) in exon 7. The nonsense mutation (C79X) leads to premature termination of translation and thus to a non-functional protein. Analysis of the crystal structure of pig DPD suggested that the R235Q mutation might interfere with the binding of FAD and the electron flow between the NADPH and the pyrimidine substrate site of DPD. 相似文献
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98.
Dias M Salvado JC Monperrus M Caumette P Amouroux D Duran R Guyoneaud R 《Systematic and applied microbiology》2008,31(1):30-37
Three strains of sulfate-reducing bacteria (ADR21, ADR26 and ADR28) were isolated from Adour estuary sediments (French South Atlantic coast). Cells of these isolates were rod-shaped, motile and stained Gram-negative. The 16S rRNA and dsrAB genes sequence analyses indicated that these three strains belonged to the genus Desulfomicrobium within the delta Proteobacteria, with Desulfomicrobium escambiense strain DSM10707T as their closest relative. According to phenotypic characteristics, strains ADR21 and ADR28 could be considered as members of the same species. The relatedness values, based on DNA–DNA hybridization studies, between strains ADR21/DSM10707T, ADR26/DSM10707T and ADR21/ADR26 ranged between 30.6–40.8%, 45.2–43.0% and 19.0–26.4%, respectively. Strains ADR21 and ADR28 grew well on lactate, fumarate, malate, formate, ethanol and H2/acetate in the presence of sulfate as an electron acceptor. Thiosulfate, nitrate, fumarate and DMSO were alternative electron acceptors. Malate was well fermented but pyruvate and fumarate only poorly. Strain ADR26 could not grow on ethanol or fumarate and was unable to use DMSO or fumarate as electron acceptors. The three new strains exhibited differences compared to the type strain of D. escambiense, such as temperature optima, substrate utilization and mercury methylation capacities. On the basis of both genetic and phenotypic evidences, strain ADR21 is proposed as the type strain of the species Desulfomicrobium salsuginis sp. nov., and strain ADR26 as the type strain of the species Desulfomicrobium aestuarii sp. nov. 相似文献
99.
This study examined chromosome numbers and karyotypes of four taxa, Hesperis novakii Dvorák, H. bottae Fourn., H. balansae Fourn. and H. syriaca (DC.) Dvorák, from naturally growing Diaplictos (Dvorák) Dvorák section, which is represented by only these four taxa in Turkey, in the genus Hesperis. H. novakii and H. syriaca have 2n=14 chromosomes, H. bottae and H. balansae have 2n=12 chromosomes in somatic cells. Total chromosome lengths are 5.37 mum and 2.17 mum in H. novakii, 5.38 mum and 2.70 mum in H. bottae, 9.59 mum and 4.28 mum in H. balansae, 4.88 mum and 2.32 mum in H. syriaca (no. 4969), 7.89 mum and 3.44 mum in H. syriaca (no. 4971). The karyotypes are as follows: H. novakii consists of 3m+1sm+1st+2T, H. bottae consists of 4m+2st, H. balansae consists of 4m+2sm, H. syriaca (no. 4969) consists of 3m+1sm+1st+2T and H. syriaca (no. 4971) consists of 3m+1sm+1st+2T chromosome pairs. Results were discussed from a cytological and taxonomical point of view. 相似文献
100.
Susie E. Barker Cathryn A. Broderick Scott J. Robbie Yanai Duran Mythili Natkunarajah Prateek Buch Kamaljit S. Balaggan Robert E. MacLaren James W. B. Bainbridge Alexander J. Smith Robin R. Ali 《The journal of gene medicine》2009,11(6):486-497