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  • Inorganic Chemistry  (8)
  • Monosomic additions  (2)
  • 1
    ISSN: 1432-2242
    Keywords: Beta vulgaris ; Beta patellaris ; Beta procumbens ; Monosomic additions ; PCR ; Repetitive probe
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The distribution of two repetitive DNA probes Sat-121 and PB6-4, specific for the section Procumbentes of the genus Beta, was tested in 16 B. patellaris monosomic addition families using a dot-blot hybridization procedure. All monosomic additions were accurately distinguished from diploid sib plants with both DNA probes. The probe PB6-4, with the strongest signal after hybridization, was selected for rapid screening of an extensive number of putative monosomic additions in B. patellaris or B. procumbens addition families using a squash-blot hybridization procedure. The probe PB6-4 detected 118 monosomic additions in 640 plants (18.4%) in eight different B. procumbens addition families. The addition family with chromosome 4 of B. procumbens was semi-lethal and could not be tested. The distribution of PB6-4 in B. patellaris addition families was confirmed in 63 addition families using the squash-blot procedure. In 4580 plants of these addition families, 628 individual monosomic additions (13.7%) were found. The relationship of the morphological characteristics of monosomic addition plants to the results of the squash-blot hybridization (plants with signal) using probe PB6-4 is quite rigorous but not complete. The correlation between plants with a signal and chromosome number (2n=19) is complete. These results indicate that sequences present on PB6-4 are probably present on all chromosomes of B. patellaris and B. procumbens. The possibility of utilizing the sequence information of Sat-121 for a PCR-based assay to screen for putative monosomic addition plants was also investigated as an alternative to chromosome counting. The DNA-amplification profiles using the primers REP and REP.INV clearly distinguished monosomic addition plants from their diploid sibs.
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  • 2
    ISSN: 1617-4623
    Keywords: Heterodera schachtii ; Beta vulgaris ; Monosomic additions ; Molecular markers ; Disease resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary In cultivated beet no useful level of resistance of the beet cyst nematode (BCN) Heterodera schachtii Schm. has been found, unlike the situation in wild species of the section Procumbentes. Stable introgression of resistance genes from the wild species into Beta vulgaris has not been achieved, but resistant monosomic additions (2n =18 + 1), diploids of B. vulgaris with an extra alien chromosome carrying the resistance locus, have been obtained. Here we describe a new series of resistant monosomic fragment addition material of B. patellaris chromosome 1 (pat-1). We further describe the cloning of a single-copy DNA marker that specifically hybridizes with a monosomic addition fragment of approximately 8 Mb (AN5-90) carrying the BCN resistance locus. This marker and another fragment-specific, single-copy DNA marker probably flank the BCN locus on the addition fragment present in the AN5-203 material, which is approximately 19 Mb in size. Furthermore, several specific repetitive DNA markers have been isolated, one of which hybridizes to AN5-90 and also to DNA from a smaller DNA segment of Beta procumbens, present in line B883, carrying a BCN resistance locus introgressed into the B. vulgaris genome. This suggests that the specific repetitive marker is closely linked to the BCN locus.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 326 (1964), S. 280-287 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The preparations of certain amino dialkyl arsines (R2As—N(C2H5)2 and R2As—NC5H10 with R = C2H5, C3H7 or C4H9) are discribed. These compounds react with H2O, CH3J or HCl by cleaving the As—N bond, forming R2AsCl in the last case. The dialkyl chloro arsines are reduced by LiAlH4 to the corresponding arsines.
    Notes: Diäthylamino- und Piperidino-dichlorarsine reagieren mit aliphatischen Grignard-Verbindungen im Molverhältnis 1:2 unter Bildung der Amino-dialkylarsine R2As—N(C2H5)2 und R2As—NC5H10 (R = C2H5, C2H5, C3H7 oder C4H9). Die Amino-dialkylarsine sind äußerst hydrolyseempfindlich, wobei eine quantitative Spaltung der As—N-Bindung stattfindet. Eine Spaltung dieser Bindung resultiert gleichfalls mit HCl-Gas. Es werden hierbei Amin-hydrochloride und aliphatische Chlorarsine R2AsCl gebildet. Letztere lassen sich mit LiAlH4 zu den entsprechenden Dialkylarsinen R2AsH reduzieren. In den Amino-dialkylarsinen fungiert das Stickstoffatom als basisches Zentrum, wie aus der Ammoniumsalzbildung mittels CH3J zu folgern ist.
    Additional Material: 1 Tab.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 330 (1964), S. 317-323 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Tertiary aromaric and aliphatic-aromatic arsines react with potassium in dioxan solution by decomposition forming the alkali arsides KAsR2 (R = C10H7-, p-CH3—C6H4—) and KAsRR′ (R = C6H5-; R = C2H5-, C6H11-). Cleaving only occurs with arsines containing two aromatic groups, but dialkyl-aryl arsines and trialkyl arsines are indifferent. Hydrolysis of KAsR2 and KAsRR′ yields the corresponding see, arsines and reaction with hydrocarbon halides gives the corresponding tert. arsines.
    Notes: Tertiäre aromatische sowie aliphatisch-aromatische Arsine reagieren mit Kalium in Dioxan unter Abspaltung eines Restes und Bildung der Alkali-arside des Typs KAsR2 (R = C10H7- und p-CH3—C6H4-) bzw. KAsRR′ (R = C6H5; R′ = C2H5; R′ = C2H5-, und C6H11-). Für eine positive Spaltung ist die Anwesenheit zweier aromatischer Reste Voraussetzung. Dialkyl-arylarsine und Trialkyl-arsine verhalten sich gegenüber Kalium in Dioxan indifferent. Nach Hydrolyse der Alkali-arside lassen sich die betreffenden sekundären Arsine gewinnen. Mit Alkylhalogenid liefern die Alkaliarside die entsprechenden tertiären Arsine.
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 11 (1878), S. 822-826 
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 38 (1905), S. 2766-2769 
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 39 (1906), S. 392-397 
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 39 (1906), S. 2346-2356 
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 39 (1906), S. 3268-3268 
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 40 (1907), S. 2220-2225 
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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