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Saturday, May 16, 2020 | History

2 edition of The cytoplasmic-polyhedrosis virus of the silkworm found in the catalog.

The cytoplasmic-polyhedrosis virus of the silkworm

Hisao Aruga

The cytoplasmic-polyhedrosis virus of the silkworm

by Hisao Aruga

  • 244 Want to read
  • 18 Currently reading

Published by University of Tokyo Press in Tokyo .
Written in English

    Subjects:
  • Cytoplasmic polyhedrosis virus,
  • Silkworms -- Diseases

  • Edition Notes

    Bibliography: p. 211-224.

    Statementedited by Hisao Aruga and Yoshinori Tanada.
    ContributionsTanada, Yoshinori.
    The Physical Object
    Paginationxii, 234 p.
    Number of Pages234
    ID Numbers
    Open LibraryOL23744329M

    Viral diseases of silkworm comprise of inclusion and non-inclusion types. The inclusion virus diseases form typical inclusion bodies. They are Nuclear polyhedrosis(NPH) and Cytoplasmic polyhedrosis(CPH). The Pathogen are NPV & CPV respectively. The non-inclusion type consists of Infectious Fachericand Densonuclcosis. 6 November 3File Size: 1MB. Description: Current Science is a fortnightly journal published since by the Current Science Association, Bangalore (India) in collaboration with the Indian Academy of Sciences. The journal covers all branches of pure/applied science and technology such as physics, chemistry, life sciences, medicine, earth sciences, engineering and technology.

    Chis had worked on a dsRNA virus (cytoplasmic polyhedrosis virus - CPV) for his PhD research. So we were able to hit the ground running with silkworm larvae, CPV and P We needed some P labelled viral dsRNA and to do this we had to inject virus infected silkworm larvae with P Silkworm disease etiology Pathogens of virus diseases In , China carried out the study on cytoplasmic polyhedrosis disease (CPV). In , Chinese researchers discovered that silkworm infectious flacherie was caused by highly infectious viral pathogen without inclusion bodies for the first time in the world.

    Virus source. Diseased B. mori larvae with flacherie symptoms were collected from sericulture farmers in northern districts of Karnataka, India. Furthermore, larvae infected with bacteria (with putrified debris), nuclear polyhedrosis virus (with milky hemolymph), and cytoplasmic polyhedrosis virus (with rectal protrusion) were discarded, and the ones with symptoms of viral flacherie were retained. Background: Antheraea mylitta cytoplasmic polyhedrosis virus (AmCPV), a cypovirus of Reoviridae family, infects Indian non-mulberry silkworm, Antheraea mylitta, and contains 11 segmented double stranded RNA (S1-S11) in its of its genome segments (S2 and S6-S11) have been previously characterized but genome segments encoding viral capsid have not been characterized.


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The cytoplasmic-polyhedrosis virus of the silkworm by Hisao Aruga Download PDF EPUB FB2

Cytoplasmic polyhedrosis viruses (CPVs) from the Cypovirus genus infect a variety of insect species. The most studied and economically important CPV is Bombyx mori cytoplasmic polyhedrosis virus The cytoplasmic-polyhedrosis virus of the silkworm book as it causes mortality in silkworm (Jiang and Xia, ).

The cytoplasmic-polyhedrosis virus of the silkworm, [Aruga, Hisao] on *FREE* shipping on qualifying offers. The cytoplasmic-polyhedrosis virus of the silkwormAuthor: Hisao Aruga. Get this from a library. The cytoplasmic-polyhedrosis virus of the silkworm. [Hisao Aruga; Yoshinori Tanada].

Bombyx mori cytoplasmic polyhedrosis virus (BmCPV) specifically infects silkworm midgut (MG) and multiplication occurs mainly in posterior midgut (PM). In this study, MG and fat body (FB) were extracted at 0, 3, 24, and 72 h after BmCPV infection.

The total sequence reads of each sample were more thanand the mapping ratio exceeded %.Cited by: Bombyx mori cypovirus-1 (BmCPV-1) (also called cytoplasmic polyhedrosis or cypovirus) is a circular, double-stranded RNA (dsRNA) virus. Its genome consists of 10 dsRNA segments that range in size from – to – kilobases (kb), each possessing a single, complete open reading frame.

Kobayashi, M.,Replication cycle of cytoplasmic-polyhedrosis virus as observed with the electron microscope, in: The Cytoplasmic-Polyhedrosis Virus of the Silkworm (H.

Aruga and Y. Tanada, eds.), pp. –, University of Tokyo Press, Tokyo. Google ScholarCited by:   After irradiation of the virus particles of CPV, the RNA replicase associated with the virion was isolated in the form of a genome-replicase complex with DEAE-Sephadex A chromatography. This complex was then treated with Triton X and purified by phosphocellulose column chromatography.

The RNA replicase reconstituted with the doublestranded RNA of CPV showed both Cited by: 3. Differentially expressed genes in the midgut of Silkworm infected with cytoplasmic polyhedrosis virus Article (PDF Available) in AFRICAN JOURNAL OF BIOTECHNOLOGY 8(16).

Identification and characterization of circular RNAs in the silkworm midgut following Bombyx mori cytoplasmic polyhedrosis virus infection Article (PDF Available) in RNA Biology 15(2) 1. J Invertebr Pathol. Mar;13(2) Purification of a cytoplasmic-polyhedrosis virus of the silkworm, Bombyx mori.

Miyajima S, Kimura I, Kawase by: 9. Bombyx mori cytoplasmic polyhedrosis virus (BmCPV) specifically infects silkworm midgut (MG) and multiplication occurs mainly in posterior midgut (PM).

In this study, MG and fat body (FB) were extracted at 0, 3, 24, and 72 h after BmCPV infection. The total sequence reads of each sample were more thanand the mapping ratio exceeded %. Efficacy of Disinfectants against Cytoplasmic Polyhedrosis Virus and Microspordia of Tasar Silkworm, Antheraea mylitta D.

Bleaching powder solution (1 to $5\%$), slaked lime solution ( to $\%$) and formalin (1 and $2\%$) were tested for their efficacy against cytoplasmic polyhedrosis virus and Nosema mylittansis spores to control virosis and pebrine respectively in tasar silkworm.

Many studies have observed that pathogenic microsporidia N. bombycis, cytoplasmic polyhedrosis virus (CPV), Bombyx mori nucleopolyhedro virus (BmNPV), Escherichia coli, Bacillus bombyseptieus, Beauveria bassiana and Bacillus thuringiensis infections promote the expression of immune-related genes [11,12,13].

However, there is little information Cited by: 2. Antheraea mylitta is a species of moth in the family Saturniidae known commonly as the tasar silkworm and vanya silkworm. It is actually one of a number of tasar silkworms, species that produce Tussar silk, a kind of wild silk that is made from the products of saturniid silkworms instead of the domesticated silkworm (Bombyx mori).

This species is native to : Saturniidae. Virosis (Cytoplasmic polyhedrosis) Among the silkworm pathogens, virus causes comparatively higher level of mortality in most of the tasar culture areas. Bad weather, ineffective disinfections and poor management leads to outbreak of the disease and severe crop loss.

6-endotoxin Academic Press acid adult Aedes anisopliae Autographa californica Bacillus thuringiensis bacteria bacterium baculovirus bassiana Beauveria beetle Biol Bombyx mori cause conidia culture cycle cytoplasmic cytoplasmic polyhedrosis digestive tract disease Drosophila eggs Entomol entomopathogenic Entomophthora envelope enzymes epizootics 5/5(1).

Aqueous extracts of thirteen plants were tested against cytoplasmic polyhedrosis virus (AmCPV) in tasar silkworm, Antheraea mylitta and out of them 2% concentrations of Aloe barbedensis (AKP 3), Psoralea corylifoilia (AKP13) and Bougainvillea spectabilis (AKP 9) were reported effective in suppressing virosis.

They reduced mortality of larvae Cited by: 4. Moniliales) Infection During Ecdysis Of Silkworm Bombyx Mori (Lepidoptera: Bombycidae). Munis Entomology & Zoology, 6 (1): ] ABSTRACT: Mulberry silkworm, Bombyx mori is the most commercially exploited insect which is domesticated worldwide for the production of silk cocoons.

Domestication and. BackgroundAntheraea mylitta cytoplasmic polyhedrosis virus (AmCPV), a cypovirus of Reoviridae family, infects Indian non-mulberry silkworm, Antheraea mylitta, and contains 11 segmented double stranded RNA (S1-S11) in its genome.

Some of its genome segments (S2 and S6-S11) have been previously characterized but genome segments encoding viral capsid have not been sIn this.

Observations reveal the possibility of differential response by haemocytes to microbial infection in different breeds. Hence, the susceptibility of three eco-races of tasar silkworm viz. Daba, Sarihan and Raily to Antheraea mylitta Cytoplasmic Polyhedrosis Virus (AmCPV) infection and difference in total haemocyte counts were tested.

GRASSERIE: Causative agent: Bombyx mori Nuclear Polyhedrosis Virus Occurrence: The disease prevails all through the year but its severity is more during Summer and Rainy seasons.

Source of infection: Silkworm gets infected when it feed on contaminated mulberry leaves. The milky white fluid released by the grasserie larvae, contaminated silkworm rearing house and appliances are the .Great progress has been made in the past decade in the field of sericulture research.

Sericulture technique covering various aspects has also advanced greatly. Like agriculture, sericulture, as an industry, requires greater development in research and technology aimed at increased production.

This text covers the complete range of subjects with current data relating to mulberry and silkworm.5/5(3).The inclusions of PIB are synthesised by the silkworm (host) machinery, independent of viral components and so, may or may not contain viral particles.

In midgut polyhedrosis, the RNA Smithia virus forms polyhedra in cytoplasm in case of midgut cytoplasmic polyhedrosis or in nucleus in case of midgut nuclear polyhedrosis. Modes of transmission.