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Library Catalogue

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    Union Catalogue of Agricultural Libraries in the Netherlands

    The WUR Library Catalogue contains bibliographic data on books and periodicals held by the libraries of Wageningen University and Research Centre and some 15 associated libraries. Holding data are added to each record.

    Subjects covered include Agrotechnology, Food and Food Production, Plant and Animal Sciences, Soil Science, Geo-information, Landscape and Spatial Planning, Water and Climate, Ecosystem Studies, Economics and Society.

    The joint collections of the participating libraries cover a substantial part of the internationally available scientific literature in these disciplines.

    As far as Dutch scientific literature in these fields is concerned, coverage can be considered near 100%, including much of the so-called "grey literature".

    All titles are entered in their original language. Keywords are added to facilitate subject searching.

    The database is updated every day and now contains over 830.000 records.

Record number 104573
Title Onderzoekingen over een virusremstof voorkomend in Dianthus cariophyllus L. : werkingsspectrum, remmingsmechanisme en aard
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door H.W.J. Ragetli
Author(s) Ragetli, H.W.J.
Publisher Wageningen : Veenman
Publication year 1957
Description VI, 100 p ill
Series title Mededeling / Laboratorium voor Virologie (5)
Notes Ook versch. in Tijdschrift voor Planteziekten 63(1957)6 p. 245-344  show all notes
Proefschrift Wageningen
Tutors Thung, Prof. Dr. Ir. T.H.
Graduation date 1957-11-22
Dissertation no. 234
Author abstract show abstract
An inhibitor of carnation proved to inhibit 14 very different viruses when tested on a range of 20 plant species. No viruses insensitive to the inhibitor were encountered. The degree of inhibition was for all viruses dependent on the plant species used as a test plant. The investigated plants could be distinguished into species very sensitive and hardly sensitive to inhibitor. The hardly sensitive ones all belonged to the order Centrospermae. The differences in sensitivity were quantitative and qualitative. The influence on contamination was expressed as a percentage activity. A decrease in the inhibitor's concentration hiw a stronger effect on the percentage activity than an increase in virus concentration of the same order.

For various reasons it was considered improbable that inhibition would result from a reaction between virus and inhibitor in a liquid medium. Their mutual independence in vitro could be confirmed by ultracentrifuging sap from carnations with mosaic disease. The feasibility was also established of inhibitor acting through the test plant.

Both infectious ribonucleic acid (RNA) of tobacco mosaic virus and the intact virus on Nicotiana glutinosa were inhibited by carnation inhibitor. The inhibition was shown not to result from an interaction between the inhibitor and the proteinaceous exterior of the virus.

The virus-inhibiting activity of the inhibitor was finally interpreted on the basis of the 'receptor theory' of viral infection as a blocking of the sites near the leaf surface necessary for successful viral infection.

By ultracentrifuging the molecular weight of the inhibitor could be estimated as at least 10.000. The inhibitor could also be isolated and some of its physical and chemical qualities could be established.

Online full textINTERNET
On paper FORUM ; STACKS ; 524F17
FORUM ; STACKS ; NN08397,0005
FORUM ; STACKS ; NN08202,234
Keyword(s) (cab) plants / pest resistance / disease resistance / plant diseases / plant viruses / ornamental plants / caryophyllaceae / plant protection / animals
Categories Plant Viruses
Publication type PhD thesis
Language Dutch; Flemish
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