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  • 11
    Electronic Resource
    Electronic Resource
    Aberrations caused by neem oil odour in green leafhopper feeding on rice plants (1986)
    Springer
    Entomologia experimentalis et applicata 42 (1986), S. 279-284 
    Details
    ISSN: 1570-7458
    Keywords: Feeding behaviour ; green leafhopper ; neem oil ; Nephotettix virescens ; rice
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé De nombreux essais en plein champ à l'I.R.R.I. ont révélé une réduction du T.V. (tungro virus) transmis par (Nephotettix virescens) sur des parcelles de riz sensible non-traitées, entourées de parcelles pulvérisées périodiquement avec de l'essence de graines de neem (Azadirachta indica). L'essence de neem a une forte odeur d'ail, perceptible à distance. Nous avons examiné l'effet de l'odeur d'essence de neem sur le comportement alimentaire deN. verescens, grâce à un dispositif électronique et un colorant spécifique de la lignine. Sur du riz maintenu dans une enceinte imprégnée d'odeur d'essence de neem, nous avons constaté une diminution de la consommation de phloème, une augmentation significative de la fréquence des piqûres et une augmentation de temps de salivation et d'absorption de xylème. Ces altérations du comportement alimentaire provoquées par l'odeur d'essence de neem peuvent expliquer la diminution de la fréquence du T.V. spécifique du phloème dans des champs de riz non-traités, entourés de champs pulvérisés avec de l'essence de neem.
    Notes: Abstract Using an electronic device and a lignin-specific dye, the feeding behaviour of the green leafhopper,Nephotettix virescens (Distant), (Homoptera: Cicadellidae) was monitored on rice plants kept in an arena permeated with the odour of neem (Azadirachta indica A. Juss) seed oil. The garlicky odour of neem oil disrupted the normal feeding behaviour of the leafhopper. Phloem feeding byN. virescens on rice plants kept in an arena permeated with odour of 6, 12, or 25% neem oil was significantly reduced compared with that on control plants kept in an arena with paraffin oil or 1.66% aqueous ‘Teepol’ solution. Reduced intake from phloem was associated with a significant increase in the insect's probing frequency and an increase in durations of salivation and xylem ingestion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00629315
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  • 12
    Electronic Resource
    Electronic Resource
    Epididymal histoplasmosis diagnosed by isolation ofHistoplasma capsulatum from semen (1995)
    Springer
    Mycopathologia 131 (1995), S. 173-177 
    Details
    ISSN: 1573-0832
    Keywords: Amphotericin B ; Epididymal histoplasmosis ; Histoplasma capsulatum ; Semen culture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract An autochthonous case of epididymal histoplasmosis masquerading as tuberculosis in a 55-year-old male patient is reported from India. It was diagnosed by culture ofHistoplasma capsulatum from semen and by demonstration of the fungus upon re-examination of epididymal biopsy sections previously misinterpreted as tuberculous granuloma. The patient's main complaints were painful epididymal swelling, occasional fever and cough. He was treated successfully by excision of epididymis and vas deferens combined with amphotericin B therapy. This is believed to be the first case of epididymal histoplasmosis to be reported outside the American continent and the fourth of its type reported in the English literature. The case is also noteworthy in thatH. capsulatum was isolated for the first time from semen, and it underlines the importance of mycological culture of semen specimens for diagnosis of genitourinary infections of obscure etiology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01102897
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  • 13
    Electronic Resource
    Electronic Resource
    Allergic bronchopulmonary aspergillosis (ABPA): Studies on the general and specific humoral response (1978)
    Springer
    Mycopathologia 63 (1978), S. 21-27 
    Details
    ISSN: 1573-0832
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Serum specimens from 138 patients suffering from chronic respiratory disorders including 63 with allergic bronchopulmonary aspergillosis (ABPA), 20 with suspected ABPA, 25 with pulmonary tuberculosis, 14 with bronchial asthma, 10 with chronic bronchitis and 6 with miscellaneous pulmonary conditions were studied for circulating antibodies to Aspergillus. The ammonium sulfate test was employed with an iodine-125 labeled mycelial component derived from Aspergillus fumigatus. When compared to normal controls from the same area, this test indicated that sera from 82 per cent of patients with ABPA had elevated binding titers to the radiolabeled antigenic component. Immunodiffusion using a culture filtrate antigen from A. fumigatus, revealed precipitating antibody to this fungus in 89 per cent of sera from ABPA patients. The majority of patients with ABPA demonstrated marked elevations of total serum IgE, moderate elevations of serum IgA and IgD and slightly increased levels of IgG and IgM.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00473155
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  • 14
    Electronic Resource
    Electronic Resource
    Distribution of clinically important thermophilic actinomycetes in vegetable substrates and soil in north-western India (1989)
    Springer
    Antonie van Leeuwenhoek 56 (1989), S. 201-209 
    Details
    ISSN: 1572-9699
    Keywords: thermophilic actmonycetes in India ; Faenia rectivirgula ; Thermoactinomyces spp. ; Saccharomonospora viridis ; hay ; compost ; bagasse ; soil ; straw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Medically important thermophilic actinomycetes were isolated from 218 (64%) of 341 samples of vegetable substrates and soil examined from sites in north-western India. Thermoactinomyces vulgaris (T. candidus) was the commonest species, occurring in 56% of samples, followed by Saccharomonospora viridis in 29%, Thermoactinomyces thalpophilus in 27%, Faenia rectivirgula (Micropolyspora faeni) in 21% and Thermoactinomyces sacchari in 14%. T. vulgaris and T. thalpophilus were isolated from all types of substrate examined, with T. vulgaris always more common than T. thalpophilus. Of the other thermophilic actinomycetes, F. rectivirgula was isolated predominantly from hay (44%) and S. viridis (56%) and T. sacchari (44%) from sugarcane bagasse. The largest populations of T. vulgaris and T. thalpophilus were found in paddy straw, followed by T. sacchari, S. viridis and F. rectivirgula in sugar-cane bagasse. The widespread occurrence of these clinically important thermophilic actinomycetes suggests that exposure of humans and animals to them may be frequent in north-western India. Studies are required to determine the prevalence of extrinsic allergic alveolitis (hypersensitivity pneumonitis) caused by thermophilic actinomycetes in the local population.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00418932
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  • 15
    Electronic Resource
    Electronic Resource
    Nickel Bistrifluorostannate(II) Hexahydrate, [Ni(H2O)6](SnF3)2 (1995)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 51 (1995), S. 345-346 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270194011340
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  • 16
    Electronic Resource
    Electronic Resource
    Olfactory sensitivity of two sympatric species of rice leaf folders (Lepidoptera: Pyralidae) to plant volatiles (1990)
    Springer
    Journal of chemical ecology 16 (1990), S. 2647-2666 
    Details
    ISSN: 1573-1561
    Keywords: Cnaphalocrocis medinalis ; electroantennogram ; green leaf volatiles ; host-plant resistance ; Lepidoptera ; Marasmia patnalis ; olfaction ; plant volatiles ; Pyralidae ; rice leaf folder
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Electroantennograms (EAGs) were recorded from male and female moths of two sympatric leaf folder species,Cnaphalocrocis medinalis (Gue-née) andMarasmia patnalis Bradley (Lepidoptera: Pyralidae) to 91 volatile chemicals of plant origin. Responses of both leaf folder species were similar to all compounds except to three monoterpenes-β-myrcene, menthone, and isomenthone- and two sesquiterpenes-cis-nerolidol and isophytol. Response ofM. patnalis, an oligophagous leaf folder, to these compounds was higher compared with that of polyphagousC. medinalis. EAG responses of males to saturated and unsaturated aliphatic aldehydes were significantly higher than those of conspecific females in both species. A higher response ofC. medinalis males also was observed for 1-nonanol, 3-nonen-2-one, andtrans, trans-2,6-dimethyl-2,4,6-octatriene. In contrast, females of both species responded more to monoterpenes, borneol, isoborneol, and fenchyl alchohol. Response ofC. medinalis female was higher for terpinen-4-ol, carveol, dihydrocarveol, (−)-myrtenal, and perillaldehyde. In both species and sexes, high EAG responses were recorded for compounds of the green leaf odor complex. EAG responses to nonanal and hexanal were maximum among the aliphatic aldehydes while 1-hexanol elicited the highest response among the alcohols tested. EAG responses to terpene compounds-citronellal,α-terpineol, and (−)-myrtenal-were equal to the response to 1-hexanol. While all compounds tested elicited a negative potential, thymol and carvacrol elicited a positive EAG potential. The EAG data are discussed with regard
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988076
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  • 17
    Electronic Resource
    Electronic Resource
    Behavioral and physiological responses of cabbage looper,Trichoplusia ni (Hübner), to steam distillates from resistant versus susceptible soybean plants (1987)
    Springer
    Journal of chemical ecology 13 (1987), S. 1903-1915 
    Details
    ISSN: 1573-1561
    Keywords: Allelochemicals ; cabbage looper ; Glycine max ; Lepidoptera ; Noctuidae ; plant resistance ; plant volatiles ; soybeans ; steam distillates ; Trichoplusia ni
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Soybean plant volatiles, extracted as steam distillates, significantly affected the behavior and biology of the cabbage looper,Trichoplusia ni (Hübner) (Lepidoptera: Noctuidae). Distillates from the susceptible Davis variety attractedT. ni larvae and female adults, whereas those from resistant PI 227687 plants repelled them. When mixed in an artificial diet, steam distillates from PI 227687 plants caused mortality of first-instar larvae. Adults emerging from pupae topically treated with 5 μg of such PI 227687 extractable showed developmental abnormalities. Larval feeding was significantly less on Davis leaves treated with PI 227687 volatiles as compared to solvent (acetone) or such Davis extractables. However, Davis volatiles on PI 227687 leaves did not increase larval feeding. HPLC analyses of steam distillates from susceptible Davis versus resistant PI 227687 indicated differences.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01013239
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  • 18
    Electronic Resource
    Electronic Resource
    Mechanisms of resistance in wild riceOryza brachyantha to rice leaffolderCnaphalocrocis medinalis (Guenée) (Lepidoptera: Pyralidae) (1991)
    Springer
    Journal of chemical ecology 17 (1991), S. 41-65 
    Details
    ISSN: 1573-1561
    Keywords: Wild rice ; Oryza brachyantha ; rice ; Oryza sativa ; host plant ; resistance ; antixenosis ; attractants ; deterrents ; silica ; rice leaffolder ; Cnaphalocrocis medinalis ; Lepidoptera Pyralidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A wild rice,Oryza brachyantha, was rated as highly resistant to rice leaffolder,Cnaphalocrocis medinalis (Guenée), while its F1 hybrid from a cross with a high-yielding, leaffolder-susceptible rice, IR31917-45-3-2, was rated resistant in a standard screening test. In comparison with IR31917-45-3-2,O. brachyantha and the F1 hybrid were unsuitable for oviposition, survival, and growth ofC. medinalis. However, growth and survival of larvae in artificial diets containing lyophilized leaf powder of IR31917-45-3-2 andO. brachyantha were comparable. Studies on the feeding and settling preference of the larval stages suggested that the mechanism of resistance ofO. brachyantha is that of antixenosis type. Olfactometer tests with first-instar larvae and electroantennogram responses of adults indicated a lack or low levels of volatile attractants inO. brachyantha and the F1 hybrid in comparison with IR31917-45-3-2. Bioassays of sequential solvent extracts of these plants indicated that larval preference for IR31917-45-3-2 and nonpreference forO. brachyantha and the F1 hybrid were due partly to chemical factors present in hexane and methylene chloride extractables. Closer arrangement of silica cells in the epidermal layer ofO. brachyantha and a higher mandibular wear in larvae reared onO. brachyantha suggested that physical resistance due to silica may be an additional cause of resistance. It was hypothesized that the high levels of resistance observed inO. brachyantha may be due to an additive or synergistic action of the absence of attractants or feeding stimulants, the presence of deterrents, and the physical resistance offered by silica. The significance of these results to a successful wide hybridization program aimed at transferring resistance factors from wild rice to cultivated rice is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00994421
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  • 19
    Electronic Resource
    Electronic Resource
    Precipitating antibodies againstMicropolyspora faeni in equines in north-western India (1985)
    Springer
    Antonie van Leeuwenhoek 51 (1985), S. 313-319 
    Details
    ISSN: 1572-9699
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Prevalence of serum precipitins againstMicropolyspora faeni, Thermoactinomyces vulgaris andAspergillus fumigatus, employing the counterimmunoelectrophoresis (COTE) and Ouchterlony's double diffusion (DD) techniques, is reported in 162 of the equines stationed at two military installations in northwestern India.M. faeni specific precipitins were demonstrable in 58 of 112 mules from site I in the mountainous region whereas the results were negative for all of the 50 horses examined from site IT located in the plains. Of the 58M. faeni positive mules, 45 (78%) had signs and symptoms suggestive of chronic obstructive pulmonary disease (COPD) while the remaining 13 (22%) were apparently free from any respiratory disorder. The more frequent occurrence ofM. faeni precipitins in the symptomatic than in the asymptomatic group of mules was found to be statistically significant (P 〈 0.01). Precipitins againstA. fumigatus were concomitantly demonstrated in 5 of the mules afflicted with COPD and found to be positive forM. faeni.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02439940
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  • 20
    Electronic Resource
    Electronic Resource
    Thermophilic actinomycetes in cane sugar mills: an aeromicrobiologic and seroepidemiologic study (1995)
    Springer
    Antonie van Leeuwenhoek 67 (1995), S. 339-344 
    Details
    ISSN: 1572-9699
    Keywords: thermophilic actinomycetes ; aerial prevalence ; bagassosis ; cane sugar mills ; T. sacchari ; precipitins
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Aerial prevalence of clinically important thermophilic actinomycetes and occurrence of precipitating antibodies against them in sera of 153 exposed workers have been reported. The study was carried out in two cane sugar mills namely, the Upper Doab Sugar Mills and the Ramala Sugar Mills, located in north-west India. In both the sugar mills,T. sacchari was the predominant species, it accounted for 55.1% and 50.3% of the total population of thermophilic actinomycetes, followed byT. vulgaris (19.7% and 23.7%),T. thalpophilus (21.1% and 17.1%),Saccharomonospora viridis (3.4% and 5.0%) andSaccharopolyspora rectivirgula (Faenia rectivirgula) (0.7% and 3.9%), respectively. Precipitating antibodies against thermophilic actinomycetes were demonstrable in 34 (22.2%) workers;T. sacchari alone accounted for 20 of the positive precipitin reactions, followed byS. rectivirgula in 10. The mean absorbance values for IgG antibody activity againstT. sacchari as well asS. rectivirgula were found to be elevated significantly in the symptomatic workers than in the asymptomatic workers (p〈0.05) or unexposed controls (p〈0.001). However, the difference in IgG antibody activity was insignificant between precipitin-positive symptomatic workers and precipitin-positive asymptomatic workers. The results indicate that clinically important thermophilic actinomycetes are widely prevalent in cane sugar mills, andT. sacchari andS. rectivirgula are the major species involved in the sensitization of the bagasse workers in India.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00872932
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