পৃষ্ঠা 1 থেকে 20 ফলাফল
Tymovirus is a genus of plant pathogenic viruses that infects several dicotyledonous plants worldwide, causing serious diseases in economically important crops. The known cytopathic effect on the host cell organelles involves chloroplast membrane deformation and the induction of vesicles in its
Unusual symptoms were observed in summer 1997 in field zucchini of several cultivars grown in central Italy. Symptoms included reduction in growth, severe mosaic, blistering and deformation of leaves, and malformation on fruits. Plants gave negative results in enzyme-linked immunosorbent assay
Potato tuber necrotic ringspot disease (PTNRD), caused by potato Y potyvirus isolate NTN (PVYNTN) of the N virus strain group, was first described in Hungary in 1980. It has spread throughout Europe, with the most recent reports from Portugal and Italy in 1997 to 1998 (1). Superficial necrotic
Six hundred and one symptomatic potato samples were collected from nine provinces in Iran. Screening by double-antibody sandwich enzyme linked immunosorbent assay using a potato virus X (PVX) together with a few potyviruses polyclonal antibodies, produced positive reactions in 4.3 % of samples
Tobacco (Nicotiana tabacum L.) is one of the important industrial plants in Iran. Viruses as an important group of plant pathogens cause many losses on the quality and quantity of tobacco crop. There was few information on the types of plant viruses infecting the tobacco fields of Guilan and almost
In August of 2002, cucumber (Cucumis sativus L. cv. Himangi) plants grown in commercial fields in Pune, western Maharashtra, India, exhibited chlorotic spots, veinal chlorosis, mosaic, blister formation and shoestring symptoms on leaves, stunted growth, and distortion of fruits. Incidence of virus
Tobacco vein banding mosaic virus (TVBMV) has been reported in Taiwan (1), North America (Tennessee) (2), and Japan (3) and induces a severe disease of tobacco. During surveys on viruses of vegetables in China, TVBMV was isolated from a Datura stramonium weed plant in July 1998 in Shaanxi Province.
Physalis peruviana is a perennial solanaceous plant that has recently been established as a commercial crop in Brazil. This work reports the near-complete genome sequence, particle morphology, and plant host responses to a putative new sobemovirus, named "physalis rugose mosaic virus". The
Tobamoviruses were detected in two ornamental plants, Dieffenbachia picta (Araceae) and Impatiens hawkeri (Balsaminaceae), from different counties in São Paulo State, Brazil. Symptoms were chlorotic spots and rings in D. picta and mosaic, blistering, and leaf deformation in I. hawkeri. Mechanical
Six calibrachoa plants displaying reduced growth, general chlorosis, and blistering on the foliage were purchased from a retail store in Starkville, MS in 2007 and tested for possible virus infections. Transmission electron microscope observations of leaf-dip preparations revealed the presence of
During a cucurbit disease survey in August 2004, severe symptoms resembling those caused by viruses were observed on bottlegourd (Lagenaria siceraria (Molina) Standl.) in the Vojvodina region of Serbia. Symptoms included stunting, mosaic, green veinbanding, blistering, yellowing, chlorotic spots,
Papaya ringspot virus (PRSV, genus Potyvirus, family Potyviridae) is economically important due to its worldwide distribution and because it can cause serious losses in both cucurbit crops and papaya (3). PRSV has been previously reported from cucurbit crops in Iran (2). In Khuzestan Province,
Tea (Camellia sinensis) is rich in specialized metabolites, especially polyphenolic proanthocyanidins (PAs) and their precursors. To better understand the PA pathway in tea, we generated a complementary DNA library from leaf tissue of the blister blight-resistant tea cultivar TRI2043 and
Lethal necrosis or systemic stem necrosis followed by death of Nicotiana benthamiana, severe leaf deformations of N. tabacum cv. white burley and blister formations on N. tabacum cv. samsun NN symptoms were induced by experimental inoculations of CMV RNA preparations containing satellite RNA
During July 2012, field-grown melon plants (Cucumis melo L.) with symptoms of mosaic, chlorotic mottling, and vein banding as well as blistering and leaf malformation were observed in one field in the locality of Kladari (municipality of Doboj, Bosnia and Herzegovina). Disease incidence was