Rod shaped plant viruses

Wisley Surrey. Bridgewater Greater Manchester. Environmentally friendly gardening. Plant health. Take part in our research. Meet the team. Shop plants rhsplants. Shopping with the RHS. Help us achieve our goals Make a donation. Join the RHS today and support our charity Join now. Save to My scrapbook. Quick facts. Jump to What are plant viruses? Symptoms Control Biology. What are plant viruses?

Symptoms Symptoms will vary depending on the virus and the plant. You may see the following symptoms: On leaves: Pale green or yellow patterns including spots, streaks, mottle, mosaic and oakleaf patterns, ring spots, vein clearing the leaf veins themselves become pale or colourless or vein banding the areas immediately adjacent to the veins are paler or a different colour. There may be spots of brown, dead tissue. You may also see narrowing of leaves, stunted growth or distortions, sometimes with very reduced surfaces between the veins puckering , resembling damage by hormone weedkillers.

Control Non-chemical control If the virus is not affecting the appearance of the plant drastically and you can tolerate the symptoms, you may decide to keep the plant.

Infected plants can act as a reservoir for infection, however. This is especially true for viruses with a large host range such as Cucumber mosaic virus and Tomato spotted wilt virus. In this instance, you may prefer to destroy the plant to prevent further spread.

You may also decide to destroy a plant where its appearance has been severely affected by virus infection. Keep gardens weed-free, as weeds can be reservoirs of virus infection for garden plants Wash hands and tools after handling suspected infected plants.

The disinfectant Virkon S, available from agricultural supply merchants, is recommended for tools Do not propagate from any plant suspected of virus infection Raise plants from seed where possible, as only a minority of viruses are transmitted through seed If buying plants rather than seed, try to source certified virus-free material e.

Biology Plant viruses are extremely minute infectious particles consisting of a protein coat and a core of nucleic acid. Gardeners' calendar. Find out what to do this month with our gardeners' calendar Advice from the RHS. Charlton, B. Effects of oxamyl on suppression of the Tobacco rattle virus vector Paratrichodorus allius and corky ringspot disease of potato in the Klamath Basin of south-central Oregon.

MS Agronomy. Cohn, E. Investigations on the life cycles and host preference of some species ov Xiphinema and Longidorus under controlled conditions. Nematologica 15, Crosslin, J. Thomas, and C. Distribution of tobacco rattle virus in tubers of resistant and susceptible potatoes and systemic movement of virus into daughter plants.

Crow, W. Diagnosis of Trichodorus obtusus and Paratrichodorus minor on turfgrasses in the Southeastern United States. Plant Health Progress doi Dale, M.

Robinson, and D. Effects of systemic infections with Tobacco rattle virus on agronomic and quality traits of a range of potato cultivars. Plant Pathology Dallwitz, M. Paine, and E. A general system for coding taxonomic descriptions.

Taxon Viruses of potatoes and seed-potato production. Centre for Agricultural Publishing and Documentation, Wageningen. Decraemer, W. The Family Trichodoridae: Stubby root and virus vector nematodes. Kluwer Academic Publ. Edwards, M. Control of plant parasitic nematodes in sultana grapevines Vitis vinifera using systemic nematicides. Australian Journal of Experimental Agriculture 31, Esmenjaud, D. Vertical distribution and infectious potential of Xiphinema index Thorne and Allen , Nematoda: Longidoridae in fields affected by grapevine fanleaf virus in vineyards in the Champagne region of France.

Agronomie 12, Ferris, H. Seasonal fluctuations in the spatial distribution of nematode populations in a California vineyard. Journal of Nematology 6, Relationship of grapevine yield and growth to nematode densities. Journal of Nematology 7, Population energetics of bacterial-feeding nematodes: respiration and metabolic rates based on carbon dioxide production. Soil Biology and Biochemistry , in press.

Spatial distribution of nematodes in peach orchards. Plant Disease Reporter 60, Fortuner, R. A reappraisal of Tylenchina Nemata. The family Hoplolaimidae Filip'ev, Revue de Nematologie 10, Garcia Gil de Bernabe, A. Ministerio de Agricultura, Madrid. Gonsalves, D. Tomato ringspot virus decline. Pp in Compendium of Grape Diseases R. Pearson and A. Goheen, Eds. Griesbach, J. Vector capability of Xiphinema americanum sensu lato in California. Revue de Nematologie 13, Halbrendt, J. Morphometric evidence for three juvenile stages in some species of Xiphinema americanum sensu lato.

Journal of Nematology 24, Aspects of biology and development of Xiphinema americanum and related species. Harrison, B. Fraenkel-Conrat, eds. Plenum Press, N. Hewitt, W. Nematode vector of soil-borne fanleaf virus of grapevines. Phytopathology 48, Hooker, W. Compendium of potato disease. American Phytopathological Society, St. Paul MN pp. Ingham, R. Hamm, R. Williams, and W. Control of Paratrichodorus allius and corky ringspot disease of potato in the Columbia Basin of Oregon.

Supplement of the Journal of Nematology 32 4S Jaffee , B. Parasitism of Xiphinema rivesi and X. Journal of Nematology 18, Jaffee, B.

Sampling strategies for detection of density-dependent parasitism of soil-borne nematodes by nematophagous fungi. Revue de Nematologie 14, Jenkins, W. A rapid centrifugal-flotation technique for separating nematodes from soil.

Plant Disease Reporter 48, Jensen, H. Trichodorus allius , a potential nematode vector of TRV. Phytopathology Kirkpatrick, J. Effects of Xiphinema index on growth and abscission in Carignane grape, Vitis vinifera. Nematologica 11, Lamberti, F. Studies on Xiphinema americanum sensu lato with descriptions of fifteen new species Nematoda: Longidoridae.

Nematologia Mediterranea 7, Diversity of Xiphinema americanum -group species and hierarchical cluster analysis of morphometrics. Present status of nematodes as vectors of plant viruses. Pp in Vistas on Nematology J. Veech and D. W Dickson , Eds. Society of Nematologists, Hyattsville , Maryland. Lider, L.

Hybrid Grapevine Rootstock Patent No. Patent Office. Martelli, G. Fanleaf degeneration. McCarthy M. The effect of rootstocks on the performance of Chardonnay from a nematode-infested Barossa Valley vineyard. American Journal of Enology and Viticulture 41, McKenry, M.

Pp in Grape Pest Management D. Flaherty, L. Christensen, W. Lanini, J. Marois, P. Phillips and L. Wilson, Eds. University of California Publication , Oakland , California.

Interactions of selected Vitis rootstocks with ectoparasitic nematodes. American Journal of Enology and Viticulture , in press. Criconema mutabile associated with bacterial canker and Nemaguard rootstock. Plant Disease 74, Melakeberhan, H. Growth and energy demand of Meloidogyne incognita on susceptible and resistant Vitis vinifera cultivars. Journal of Nematology 20, Mojtahedi, H. The effects of ammonia-generating fertilizer on Criconemoides xenoplax in pot cultures.

Journal of Nematology 8, S Santo, J. Crosslin, C. Brown, and P. Corky ringspot disease: Review of the current situation.

Moses Lake , WA. Boydston, P. Thomas, J. M Crosslin, and R. Eliminating tobacco rattle virus from viruliferous Paratrichodorus allius and establishing a new virus-vector combination. Journal of Nematology Nyczespir, A.

Peach leaf senescence delayed by Criconemella xenoplax. Orton Williams, K. Macroposthonia xenoplax. Pinochet, J. Four new species of the genus Hemicriconemoides Nematoda: Criconematidae. Effect of Helicotylenchus pseudorobustus on 'Thompson Seedless' grape.

Search ADS. Hughes, S. The Virus: A His- tory of the Concept. New York: Science History Publications. Loebenstein, G. The local lesion response to viruses: Pos- sibilities for engineering resistant plants. Chet Ed. New York: Wiley-Liss, Inc. The local lesion response to viruses: Possibilities for engineering resistant plants.

Maratos, M. Tobacco mosaic virus: A research and education tool for the 21st cen- tury. Matthews, R. Matthews Ed. Van Regenmortel, M. To- bamoviruses. Kurstak Ed. Van Regenmortel.

Zaitlin, M. To- bacco mosaic virus type strain. Agrios, G. Plant Pathology 3rd ed. New York: Academic Press, Inc. Hull, R. The movement of vi- ruses in plants.