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  • 1
    Electronic Resource
    Electronic Resource
    In Vitro Response to Fusarium Elicitor and Toxic Substances in Crosses between Resistant and Susceptible Carnation Cultivars (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 98 (1987), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: To assess the correlation between in vivo resistance to F. oxysporum f. sp. dianthi and in vitro behaviour, calli from several resistant and susceptible Mediterranean carnation cultivars and F1 progenies of crosses were tested both for the ability to grow on a medium containing crude culture filtrate of F. oxysporum and to produce phytoalexins following treatment with cell wall components (elicitor) of the same fungus. The results show no significant correlation between in vivo resistance and in vitro tolerance to culture filtrate of the fungus, while there was a good correlation in die case of phytoalexin production. Moreover, the character phytoalexin production behaved as a dominant in the crosses between a resistant and a susceptible cultivar.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1987.tb01141.x
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  • 2
    Electronic Resource
    Electronic Resource
    Familial Alzheimer's disease in kindreds with missense mutations in a gene on chromosome 1 related to the Alzheimer's disease type 3 gene (1995)
    [s.l.] : Nature Publishing Group
    Nature 376 (1995), S. 775-778 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Initial studies of the SI82 gene suggested the existence of other genes with similar sequences1. Searches of nucleotide sequence database by using the BLASTX alignment program uncovered three expressed sequence-tagged sequences (ESTs) (T03796, and subsequently R14600 and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/376775a0
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Alzheimer's Disease and Apolipoprotein E in Italy (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 777 (1996), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Notes: Recent studies have provided evidence of association of apolipoprotein E (ApoE) ε4 allele and late onset familial and sporadic Alzheimer's disease (AD). Epidemiological studies have established allelic variation at the ApoE locus. We have analyzed the ApoE gene polymorphism in a sample of 416 Italian subjects. Our data confirm a significant association between ε4 allele and sporadic AD. The frequency of ε4 allele in early onset familial AD patients was comparable to control values suggesting that ε4 allele does not represent a risk factor for early onset familial AD (EOFAD). Moreover, we found a not-previously reported association between ApoE ε2 allele and sporadic AD and EOFAD. We included in this study two EOFAD families with the APP717 Val → Ile mutation in the Amyloid Precursor Protein (APP) gene on chromosome 21.In any of the EOFAD families there was a significant effect of the ApoE genotype on the age of onset with the exception of one of the two mutated EOFAD families in which the 2 allele delays the age of onset.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1996.tb34429.x
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  • 4
    Electronic Resource
    Electronic Resource
    Tumor formation and morphogenesis on different Nicotiana sp and hybrids induced by Agrobacterium tumefaciens T-DNA mutants (1987)
    Chichester [u.a.] : Wiley-Blackwell
    Developmental Genetics 8 (1987), S. 61-71 
    Details
    ISSN: 0192-253X
    Keywords: Agrobacterium insertion mutants ; hormone equilibria ; differentiation ; dedifferentiation ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: A series of experiments are presented that have been performed to observe the interactions between Agrobacterium tumefaciens strains mutated in the T-DNA genes involved in indoleacetic acid and cytokinin biosynthesis and several Nicotiana species and hybrids. Infections were induced on leaf cuttings of Nicotiana debneyi, N. knightiana, N. clevelandii, N. bigelovii var bigelovii, N. bigelovii var quadrivalvis, N. glauca, N. langsdorffii, the amphidiploid tumorous hybrid N. glauca × N. langsdorffii, and a nontumorous mutant of it. The effect of deletions of the Ti plasmid varied according to plant genotype. Insertion mutants in iaaM and iaaH suppressed tumor formation in N. langsdorffii, reduced it in N. bigeloviivar quadrivalvis, had no effect in N. glauca and the two amphidiploid hybrids, and promoted tumorigenesis when compared to the wild-type Agrobacterium strain B6S3 in N. bigelovii N. debneyi, and N. knightiana. The same mutations induced shoot formation in N. glauca, increased it in N. debneyi, and suppressed root formation in N. knightiana. On the other hand, an insertion mutation of the isopentenyl transferase gene (ipt-) had no effect in N. bigelovii var quadrivalvis, N. debneyi, the tumorous hybrid, suppressed tumor formation in N. langsdorffii, and inhibited it in N. glauca, the nontumorous hybrid, N. bigelovii var bigelovii, and N. knightiana. Insertion in ipt suppressed shoot formation in the nontumorous hybrid and inhibited it in the nontumorous amphidiploid and N. debneyi, while promoting root formation in N. glauca and N. debneyi.The suggestion of the existence of specific hormone equilibria necessary for the shift to each morphogenetic pattern was supported by experiments with exogenous hormone treatments of three genotypes (N. glauca, N. langsdorffii, and the nontumorous N. glauca × N. langsdorffii).
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/dvg.1020080202
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