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Friday, July 24, 2020 | History

2 edition of Studies of spiroplasma viruses. found in the catalog.

Studies of spiroplasma viruses.

M. A. Stephens

Studies of spiroplasma viruses.

by M. A. Stephens

  • 74 Want to read
  • 33 Currently reading

Published by University of East Anglia in Norwich .
Written in English


Edition Notes

Thesis (Ph.D.) - University of East Anglia, School of Biological Sciences, 1980.

ID Numbers
Open LibraryOL14512101M

The new Spiroplasma species is seen in BCE cultures by TEM. The isolation of Spiroplasma species from eyes of scrapie-affected sheep confirms the consistent association of spiroplasma with the TSEs, and the concentration of spiroplasma in sheep eyes provides a resource for future research studies. Retrieved from "?title=Spiroplasma_virus_SkV1CR23x&oldid=".

The Book of Revelation in the Bible is one of the more difficult books of the Bible to understand. A Testimony of Jesus Christ is a commentary that explains some of the mysteries of Revelation. Genetic diversity of citrus tristeza virus from cross-protected and unprotected citrus trees after 20 years of natural challenge in Peru. In: Abstract Book of the 10th Congress, International Society of Citrus Nurseries, Feb , , Mazatlan, Sinaloa, Mexico.

Spiroplasma is a genus of Mollicutes, a group of small bacteria without cell walls. Spiroplasma shares the simple metabolism, parasitic lifestyle, fried-egg colony morphology and small genome of other Mollicutes, but has a distinctive helical morphology, unlike has a spiral shape and moves in a corkscrew motion. Many Spiroplasma are found either in the gut or . Studies of symptomatology and detection of Spiroplasma citri, a causal agent of stubborn disease, observed on citrus trees in the East Mediterranean area. Foreign Title: Doğu akdeniz bölgesi'nde turunçgil ağaçlarında gözlenen stubborn hastalığı etmeni Spiroplasma citri 'nin simptomoloji ve tanılanması üzerinde araștırmalar.


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Studies of spiroplasma viruses by M. A. Stephens Download PDF EPUB FB2

Fourteen viruses have been identified: six in Acholeplasma, four in Mycoplasma and four in Spiroplasma species. They are rod-shaped (Fig. ) or enveloped spheres that bud from the mycoplasma membrane surface, or are polyhedral with a tail.

Those that have been examined in detail contain single- or double-stranded DNA in circular or linear form. Background. Spiroplasma virus, SpV4, is a small, non-enveloped virus that infects the helical mollicute Spiroplasma 4 exhibits several similarities to the Chlamydia phage, Chp1, and the Coliphages α3, φK, G4 and φX All of these viruses are members of the viruses have isometric capsids with T = 1 icosahedral Cited by:   Virus-like particles of three morphologic groups have been detected by electron microscopy in 90% of spiroplasma strains.

In this study, virus-like particles of group 1 (SpV1)—unenveloped rods – nm by 10–15 nm—were found in 57% of by: 4. Based on results from this study and previously published data, strain TN-1(T) (= ATCC ) (group XVIII) is designated the type strain of a new spiroplasma species, Spiroplasma litorale.

View. Experimental studies have demonstrated that S. mirum did not induce TSE-like disease in raccoons and recently suggested that the ability to form biofilms in Spiroplasma spp. is the basis of the spread and of the pathogenesis of diseases caused by this Spiroplasma[].Cited by: 2.

Spiroplasma kunkelii causes corn stunt disease of Zea mays L. in the Americas. Here, we report the nucleotide sequence of the 1,bp circular chromosome and four plasmids of strain CRx. This information will facilitate studies of Spiroplasma pathogenicity and evolutionary adaptations to transkingdom parasitism in plants and insect vectors.

Spiroplasma infection in honey bees was first reported in Subsequently, honey bee-infecting and other spiroplasma species were found on the surfaces of flowers. Several species of Spiroplasma are now known to infect honey bee. The references listed below will provide the reader with some background concerning research on these spiroplasmas.

Explore the latest full-text research PDFs, articles, conference papers, preprints and more on BLOOD PARASITES. Find methods information, sources, references or conduct a.

A study published in mid-March in the New England Journal of Medicine found that viable coronavirus could live on surfaces such as plastic and stainless steel for three days and survive for up to.

Spiroplasma, small motile wall-less bacteria, are linked by molecular and serological studies to the transmissible spongiform encephalopathies (TSEs), which include scrapie in sheep, chronic wasting disease (CWD) in deer and Creutzfeldt–Jakob disease in humans.

In this study, two. The Spiroplasma kunkelii (CRX strain) genome has been fully sequenced and consists of a 1,bp circular chromosome and four plasmids [68,80,81]. Within the S.

kunkelii chromosome, there are protein-coding regions, multiple insertions of Spiroplasma virus sequences, a set of rRNA genes, and 33 tRNA genes. Spiroplasma virus, SpV4, is a small, spherical virus that infects the Spiroplasma melliferum. This non-enveloped, single-stranded DNA virus was discovered in in strain B63 of S.

melliferumcultured from a honey bee in Morocco [1] and has since been propagated in S. mel-liferumstrain G1 [2,3]. Spiroplasmas are helical, wall-free. This book will provide a comprehensive reference source for all mycoplasmologists and a relevant and exhaustive summary of recent advances in the study of spiroplasmas, acholeplasmas, and mycoplasmas in plant and arthropod hosts for microbiologists, cellular and molecular biologists, plant pathologists, and entomologists.

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CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): infects the helical mollicute Spiroplasma melliferum. SpV4 exhibits several similarities to the Chlamydia phage, Chp1, and the Coliphages α3, φK, G4 and φX All of these viruses are members of the Microviridae.

These viruses have isometric capsids with T = 1 icosahedral symmetry, cause. In the presence of L. heterotoma, fly Spiroplasma infection had a significantly strong and positive effect on fly larva-to-adult survival. SPIROPLASMA DEFINTION Spiroplasma is a genus of Mollicutes, a group of small bacteria without cell walls.

Spiroplasma shares the simple metabolism, parasitic lifestyle, fried-egg colony morphology and small genome of other Mollicutes, but has a distinctive helical morphology, unlike Mycoplasma. STRUCTURE General Characters 1.

This chapter focuses on the temperate MAV1 phage that infects strains of Mycoplasma arthritidis. The major M. arthritidis factor that has been implicated in the development of arthritis is the extensively studied superantigen MAM.

In some respects, mycoplasmal phage infections resemble the viral infections of animal cells. The current hypothesis is that Vir prevents.

Retrieved from "?title=Spiroplasma_virus_SpV4&oldid=". The Mycoplasmas, Volume III: Plant and Insect Mycoplasmas is a volume of a comprehensive three-volume series encompassing various facets of mycoplasmology.

It attempts not only to present an extensive and critical review of the rapidly expanding field of plant and insect mycoplasmas, but also to integrate these important subdisciplines into the total field of. Plant disease - Plant disease - Symptoms and signs: Bacterial diseases can be grouped into four broad categories based on the extent of damage to plant tissue and the symptoms that they cause, which may include vascular wilt, necrosis, soft rot, and tumours.

Vascular wilt results from the bacterial invasion of the plant’s vascular system. The subsequent multiplication and .Abstract Spiroplasma citri, the type species of the genus Spiroplasma (Spiroplasmataceae, Mollicutes), is restricted to the phloem sieve tubes and transmitted by phloem sap-feeding insects, as is characteristic of the phytopathogenic mollicutes.

The spiroplasmas are the only mollicutes showing motility and helical morphology, apparently. In collaboration with Dr.

Thune, a genomic study will be conducted on the putative organism, which should dramatically help understand the role of spiroplasma in TSE. Research studies: Bastian FO, Rabson AS, Yee CL, Tralka TS: “Herpes virus hominis: Isolation from human trigeminal ganglion.” Science l;