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  • 1
    Electronic Resource
    Electronic Resource
    Sequential pathological studies in the udder of goats intramammarily infected withAspergillus fumigatus (1994)
    Springer
    Mycopathologia 126 (1994), S. 9-14 
    Details
    ISSN: 1573-0832
    Keywords: Aspergillosis ; Goats ; Pathology ; Udder
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Intramammary inoculation of goats withAspergillus fumigatus spores resulted in the development of mastitis with characteristic gross and microscopic lesions. The mastitis and the lesions were restricted to the infected udder halves only and there was no dissemination of infection to other tissues of the body. The experiment was continued for 45 days. Gross changes in the infected udder were observed up to the 45th day post-infection. The lesions, in general, included variable sized abscesses in the first 15 days followed by development of varying sized greyish-white nodules in the infected udders. Microscopic changes consisted of granulomatous reaction with well developed granulomas in the infected udders. Hyphae and spores ofAspergillus fumigatus could be demonstrated in sections of the infected udders up to 45 days after infection. Reisolation of the fungus consistently was achieved up to 45 days. It is concluded that intramammary inoculation ofAspergillus fumigatus spores in goats leads to chronic granulomatous mastitis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01371167
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  • 2
    Electronic Resource
    Electronic Resource
    Sequential pathological studies in goats infected intratracheally withAspergillus fumigatus (1993)
    Springer
    Mycopathologia 121 (1993), S. 77-81 
    Details
    ISSN: 1573-0832
    Keywords: Aspergillosis ; Goats ; Pathology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Intratracheal inoculation of goats withAspergillus fumigatus spores resulted in the development of characteristic gross and microscopic lesions. The lesions were restricted to lungs and there was no dissemination of infection to other tissues of the body except liver in one goat 16 days after infection. The experiment was continued for 37 days. Gross changes in lungs were observed up to the 24th day post-infection. The lesions, in general, included congestion and oedema in the first 6 days followed by the development of varying greyish-white nodules in the lungs. Microscopic changes consisted of granulomatous reaction with well developed granulomas in lungs. Hyphae and conidiophores with fruiting bodies ofAspergillus fumigatus could be demonstrated in sections up to 24 days of infection. Reisolation of the fungus consistently was achieved up to 24 days. It is concluded that intratracheal inoculation ofAspergillus fumigatus spores in goats leads to pulmonary aspergillosis up to 24 days.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01103574
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  • 3
    Electronic Resource
    Electronic Resource
    Clinico-pathological studies on experimental cryptococcal mastitis in goats (1994)
    Springer
    Mycopathologia 126 (1994), S. 147-155 
    Details
    ISSN: 1573-0832
    Keywords: Cryptococcus neoformans ; Goats ; Mastitis ; Pathology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Unilateral intramammary inoculation of 10 goats withCryptococcus neoformans (2×106 yeast cells) resulted in the development of mastitis, with gross and microscopic lesions being restricted to the infected udder halves only and there was no dissemination of infection to the opposite uninfected udder halves as well as to other organs of the body. The experiment was continued for 40 days, with 2 animals each from the infected and control groups being killed on 5th, 10th, 20th, 30th and 40th day postinoculation (DPI). Initial enlargement of the infected udder halves was followed by marked decrease in size leading to very small, firm and nodular udder halves. After infection, there was also sharp fall in the milk yield. Cryptococcal organisms were demonstrated in the mastitic milk and udder impression smears with special stains.C. neoformans was reisolated from the milk of only infected udder halves up to 25th DPI. Microsopically, there was initially acute diffuse purulent mastitis which later on became chronic, characterised by marked infiltration of lymphocytes, macrophages, extensive fibrosis and development of multiple granulomas. The cryptococcal organisms could be demonstrated in the udder sections only up to 30th DPI. It is concluded that intramammary inoculation ofCryptococcus neoformans in goats leads to severe mastitis with sharp fall in milk yield.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01103768
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  • 4
    Electronic Resource
    Electronic Resource
    A microsatellite marker associated with a QTL for grain protein content on chromosome arm 2DL of bread wheat (1999)
    Springer
    Theoretical and applied genetics 99 (1999), S. 341-345 
    Details
    ISSN: 1432-2242
    Keywords: Key words Bread wheat ; Grain protein content ; Microsatellite ; STMS ; QTL analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  This study was undertaken with a view to tag gene(s) controlling grain protein content (GPC) using molecular markers in bread wheat. For this purpose, the genotype PH132 with high protein content (13.5%) was crossed with genotype WL711 with significantly lower protein content (9.7%), and 100 RILs were derived. These RILs showed normal distribution for protein content. The parental genotypes were analysed with 232 STMS primer pairs for detection of polymorphism. Of these, 167 primer pairs gave scorable amplification products, and 57 detected polymorphism between the parents. Using each of these 57 primer pairs, we carried out bulked segregant analysis on RILs representing the two extremes of the distribution. One primer pair for the locus wmc41 showed association with protein content. This was further confirmed through selective genotyping. The co-segregation data on the molecular marker (wmc41) and protein content on 100 RILs was analysed by means of a single-marker linear regression approach. Significant regression suggested linkage between wmc41 and a QTL (designated as QGpc.ccsu-2D.) for protein content. The results showed that this marker-linked QTL accounted for 18.73% of the variation for protein content between the parents. The marker has been located on chromosome arm 2DL using nulli-tetrasomic lines and two ditelocentric stocks for chromosome 2D.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051242
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  • 5
    Electronic Resource
    Electronic Resource
    Identification of a microsatellite on chromosomes 6B and a STS on 7D of bread wheat showing an association with preharvest sprouting tolerance (1999)
    Springer
    Theoretical and applied genetics 99 (1999), S. 336-340 
    Details
    ISSN: 1432-2242
    Keywords: Key words Preharvest sprouting ; Microsatellite ; STMS ; STS ; Linkage ; Bread wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  In bread wheat, the transfer of tolerance to preharvest sprouting (PHS) that is associated with genotypes having red kernel colour to genotypes with amber kernels is difficult using conventional methods of plant breeding. The study here was undertaken to identify DNA markers linked with tolerance to PHS as these would allow indirect marker-assisted selection of PHS-tolerant genotypes with amber kernels. For this purpose, a set of 100 recombinant inbred lines (RILs) was developed using a cross between a PHS-tolerant genotype, SPR8198, with red kernels and a PHS-susceptible cultivar, ‘HD2329’, with white kernels. The two parents were analysed with 232 STMS (sequence-tagged microsatellite site) and 138 STS (sequence-tagged site) primer pairs. A total of 300 (167 STMSs and 133 STSs) primer pairs proved functional by giving scorable PCR products. Of these, 57 (34%) STMS and 30 (23%) STS primer pairs detected reproducible polymorphism between the parent genotypes. Using these primer pairs, we carried out bulked segregant analysis on two bulked DNAs, one obtained by pooling DNA from 5 PHS-tolerant RILs and the other similarly derived by pooling DNA from 5 PHS-susceptible RILs. Two molecular markers, 1 STMS primer pair for the locus wmc104 anda STS primer pair for the locus MST101, showed apparent linkage with tolerance to PHS. This was confirmed following selective genotyping of individual RILs included in the bulks. Chi-square contingency tests for independence were conducted on the cosegregation data collected on 100 RILs involving each of the two molecular markers (wmc104 and MST101) and PHS. The tests revealed a strong association between each of the markers and tolerance to PHS. Using nullisomic-tetrasomic lines, we were able to assign wmc104 and MST101 to chromosomes 6B and 7D, respectively. The results also indicated that the tolerance to PHS in SPR8198 is perhaps governed by two genes (linked with two molecular markers) exhibiting complementary interaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051241
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