Indian citrus ringspot virus: localization of virus in seed tissues and evidence for lack of seed transmission

2011 ◽  
Vol 39 (5) ◽  
pp. 491-496 ◽  
Author(s):  
Prabha K. ◽  
V. K. Baranwal
Keyword(s):  
Seed Transmission ◽  
Ringspot Virus ◽  
Virus Localization

scholarly journals Epidemiology of Blackberry chlorotic ringspot virus

Plant Disease ◽  
2014 ◽  
Vol 98 (4) ◽  
pp. 547-550 ◽  
Author(s):  
Bindu Poudel ◽  
Thien Ho ◽  
Alma Laney ◽  
Archana Khadgi ◽  
Ioannis E. Tzanetakis
Keyword(s):  
Seed Transmission ◽  
Ringspot Virus ◽  
Control Measures ◽  
Breeding Programs ◽  
Specialty Crops ◽  
Tree Fruit ◽  
Blackberry Yellow Vein Disease ◽  
Rose Rosette ◽  
Infected Material ◽  
Vein Disease

The pollen- and seed-borne ilarviruses pose a substantial threat to many specialty crops, including berries, rose, and tree fruit, because there are no efficient control measures other than avoidance. The case of Blackberry chlorotic ringspot virus (BCRV) is of particular interest because the virus has been found to be an integral part of blackberry yellow vein disease and is widespread in rose plants affected by rose rosette disease. This study provides insight into the epidemiology of BCRV, including incidence in blackberry and rose; host range, with the addition of apple as a host of the virus; and seed transmission that exceeded 50% in rose. Sensitive detection protocols that can be used to avoid dissemination of infected material through nurseries and breeding programs were also developed.

Grapevine yellow speckle — a newly recognized graft-transmissible disease of Vitis

1972 ◽  
Vol 23 (3) ◽  
pp. 447 ◽  
Author(s):  
RH Taylor ◽  
RC Woodham
Keyword(s):  
Seed Transmission ◽  
Ringspot Virus ◽  
Herbaceous Plants ◽  
Grapevine Fanleaf Virus ◽  
The Past ◽  
Tomato Ringspot Virus ◽  
Wide Range ◽  
Heat Therapy ◽  
Transmissible Disease ◽  
Leaf Symptoms

Evidence is presented to show that many grapevines showing leaf symptoms which, particularly when intense, cannot be distinguished from those caused by strains of grapevine fanleaf virus (GFV) or tomato ringspot virus (TRSV) are infected with a previously undescribed disease for which the name grapevine yellow speckle (GYS) is proposed. The causal agent of the disease has not been isolated, but it is graft-transmissible from infected to healthy grapevines. It has not been transmitted by sap inoculation to herbaceous plants. The disease has been detected in some grapevine cultivars grown in Australia for many years, and also in several other cultivars and rootstocks imported from California over the past 10 years. There is no evidence of natural spread or of seed transmission. Attempts to eliminate GYS from plants by heat therapy and propagation of tip cuttings have been unsuccessful. Mataro and LN33, the best indicators for GYS at present, are not entirely satisfactory and there is a need to find an indicator which will detect GYS in a wide range of environments. The disease has not been previously detected, probably because of its similarity to GFV and TRSV and its peculiarity in expressing symptoms only in some environments.

Studies of the seed-transmission of tobacco ringspot virus

1968 ◽  
Vol 61 (2) ◽  
pp. 195-202 ◽  
Author(s):  
G. K. OWUSU ◽  
N. C. CROWLEY ◽  
R. I. B. FRANCKI
Keyword(s):  
Seed Transmission ◽  
Ringspot Virus ◽  
Tobacco Ringspot Virus

scholarly journals Seed Transmission of Hibiscus Latent Ringspot Virus (HLRSV)

Plant Disease ◽  
1997 ◽  
Vol 81 (9) ◽  
pp. 1082-1084 ◽  
Author(s):  
C. Rubies-Autonell ◽  
M. Turina
Keyword(s):  
Seed Transmission ◽  
Abutilon Theophrasti ◽  
Hibiscus Cannabinus ◽  
Ringspot Virus ◽  
Seed Infection ◽  
Chenopodium Amaranticolor ◽  
Commercial Seed ◽  
Immunosorbent Assays ◽  
Systemic Symptoms ◽  
Greenhouse Tests

Commercial seed lots of various cultivars of kenaf (Hibiscus cannabinus) were shown to transmit hibiscus latent ringspot virus (HLRSV) to progeny seedlings in different percentages up to a maximum of 26%. In these greenhouse tests, no symptoms were observed in the infected seedlings. Enzyme-linked immunosorbent assays (ELISA) of dissected kenaf seeds suggested that seed infection occurs through the embryo. HLRSV was also shown to be seed transmitted in Chenopodium amaranticolor and C. quinoa, in 11% and in less than 1%, respectively, of the seed collected from mechanically inoculated plants. However, transmission of HLRSV through seed was not detected in Abutilon theophrasti. C. quinoa and C. amaranticolor plants infected through seed transmission were invariably symptomless as opposed to mechanically inoculated plants that exhibited systemic symptoms of yellow flecking.

The association of Prunus ringspot, prune dwarf, and dark green sunken mottle viruses in the rosetting and decline disease of peach

1971 ◽  
Vol 22 (5) ◽  
pp. 771 ◽  
Author(s):  
LL Stubs ◽  
PR Smith
Keyword(s):  
Root Zone ◽  
Seed Transmission ◽  
Ringspot Virus ◽  
Dwarf Virus ◽  
Prune Dwarf Virus ◽  
Natural Spread ◽  
Decline Disease ◽  
Prunus Necrotic Ringspot Virus ◽  
Dark Green

The symptoms of a rosetting and decline disease of peach are described. Prunus necrotic ringspot virus (PRSV), prune dwarf virus (PDV), and a virus which causes a dark green sunken mottle (DGSM) on peach leaves have been isolated from diseased trees. Combinations of these viruses interacted synergistically in peach seedlings, but with considerable variation in the degree of synergism. The most severe expression of rosetting resulted from the interaction of all three viruses. Interaction between PRSV and PDV usually caused recurrent rosetting. PRSV and PDV were transmitted through the seed of rosetted peaches, but the latter in only a low percentage of seeds (max. 6%) and then only in combination with PRSV, which was transmitted to a maximum of 35.7 %. There was no evidence for seed transmission of DGSM. A study of natural spread of rosetting in a commercial planting of Golden Queen peaches showed that rosetted trees increased from 0.8 to 56.1 %, a total of 265 in 472 trees, in 7 years. Seedlings grown in soil obtained from the root zone of infected trees did not become infected.

scholarly journals Molecular Identification, Reverse Transcription-Polymerase Chain Reaction Detection, Host Reactions, and Specific Cytopathology of Artichoke yellow ringspot virus Infecting Onion Crops

2006 ◽  
Vol 96 (6) ◽  
pp. 622-629 ◽  
Author(s):  
Varvara I. Maliogka ◽  
Chrisostomos I. Dovas ◽  
Dietrich E. Lesemann ◽  
Stephan Winter ◽  
Nikolaos I. Katis
Keyword(s):  
Polymerase Chain Reaction ◽  
Reverse Transcription ◽  
Transmission Rate ◽  
Seed Transmission ◽  
Ringspot Virus ◽  
Chain Reaction ◽  
Degenerate Primers ◽  
Cytoplasmic Inclusions ◽  
The Family ◽  
Polymerase Chain

An isometric virus ca. 25 nm in diameter with angular contour was isolated from onion plants showing yellow leaf striping and necrotic tips. The virus was mechanically transmitted onto 28 species of indicator plants belonging to five families, viz. Amaranthaceae, Chenopodiaceae, Cucurbitaceae, Leguminosae, and Solanaceae where it causes ring spots, malformations, and/or tip necrosis. Cytopathological studies in infected Nicotiana benthamiana tissues revealed cytoplasmic inclusions resembling those caused by Artichoke yellow ringspot virus (AYRSV), a member of the family Comoviridae. Host range and symptomatology of the onion virus were also similar to AYRSV. A high seed transmission rate (20%) was found in onion. Reverse transcription-polymerase chain reaction using degenerate primers specific for the family Comoviridae allowed amplification of RNA-dependent RNA polymerase sequences, which upon sequence analysis and comparison with AYRSV isolates from Cynara scolymus (AYRSV-AtG) and Vicia faba (AYRSV-F) were highly similar, thus providing evidence that the nepovirus AYRSV is infecting onion in the field.

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