Production of a nitrate reductase deficient streptomycin resistant mutant of Nicotiana tabacum for somatic hybridization studies
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چکیده
منابع مشابه
Characteristics of a Nitrate Reductase in a Barley Mutant Deficient in NADH Nitrate Reductase.
A barley (Hordeum vulgare L.) mutant, nar1a (formerly Az12), deficient in NADH nitrate reductase activity is, nevertheless, capable of growth with nitrate as the sole nitrogen source. In an attempt to identify the mechanism(s) of nitrate reduction in the mutant, nitrate reductase from nar1a was characterized to determine whether the residual activity is due to a leaky mutation or to the presenc...
متن کاملVariation of genomic DNA methylation in the nitrate reductase gene of sibling tobacco (Nicotiana tabacum) cultivars.
To better understand genomic DNA methylation in sibling plant cultivars, methylation-sensitive amplification polymorphism analysis was used to investigate two sibling tobacco cultivars, Yunyan85 and Yunyan87, and their two parents, K326 and Yunyan No. 2. Differences in the degree of genomic DNA methylation were found among the four tobacco cultivars. Compared with parents, the two sibling...
متن کاملfaciliting lexical access for the fluent production of speech
the hypothesis is that recent and frequent exposure to lexical items leads to a more fluent production of speech in terms of rate of speech. to test the hypothesis,a one-way anova experimental design was carried out. 24 sednior students of efl participated in a one-way interview test. data analyses revealed that those who were exposed frequently to the lexical items over a week prior to inter...
15 صفحه اولfacilitating lexical access for the fluent production of speech
the hypothesis is that recent and frequent exposure to lexical items leads to a more fluent production of speech in terms of rate of speech. to test the hypothesis , a one- way anova experimental design was carried out. 24 senior student of efl participated in a one-way interview test. data analyses revealed that those who were exposed frequently to the lexical items over a week prior to inte...
15 صفحه اولCharacterization of Kanamycin-Resistant Cell Lines of Nicotiana tabacum.
Two kanamycin-resistant variants of Nicotiana tabacum were derived by culturing seedling leaf sections on a shoot-inducing medium containing kanamycin. The variants displayed a higher resistance to the structurally related antibiotic streptomycin than to kanamycin. The resistance phenotype was expressed when the tissue was cultured either as callus or as a differentiating tissue and was stably ...
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ژورنال
عنوان ژورنال: Heredity
سال: 1983
ISSN: 0018-067X,1365-2540
DOI: 10.1038/hdy.1983.21