scholarly journals Genetic Diversity of Nine Non-Recombinant Potato virus Y Isolates From Three Biological Strain Groups: Historical and Geographical Insights

Plant Disease ◽  
2020 ◽  
Vol 104 (9) ◽  
pp. 2317-2323 ◽  
Author(s):  
Kelsie J. Green ◽  
Arturo Quintero-Ferrer ◽  
Mohamad Chikh-Ali ◽  
Roger A. C. Jones ◽  
Alexander V. Karasev
Keyword(s):  
Potato Virus ◽  
Potato Virus Y ◽  
Australian Isolate ◽  
Serological Testing ◽  
Tobacco Plants ◽  
Cultivated Potato ◽  
New Findings ◽  
The World ◽  
Solanum Spp ◽  
Mexican Isolate

Potato virus Y (PVY) isolates from potato currently exist as a complex of six biologically defined strain groups all containing nonrecombinant isolates and at least 14 recombinant minor phylogroups. Recent studies on eight historical UK potato PVY isolates preserved since 1984 found only nonrecombinants. Here, four of five PVY isolates from cultivated potato or wild Solanum spp. collected recently in Australia, Mexico, and the U.S.A. were typed by inoculation to tobacco plants and/or serological testing using monoclonal antibodies. Next, these five modern isolates and four additional historical UK isolates belonging to biological strain groups PVYC, PVYZ, or PVYN obtained from cultivated potato in 1943 to 1984 were sequenced. None of the nine complete PVY genomes obtained were recombinants. Phylogenetic analysis revealed that the four historical UK isolates were in minor phylogroups PVYC1 (YC-R), PVYO-O (YZ-CM1), PVYNA-N (YN-M), or PVYEu-N (YN-RM), Australian isolate YO-BL2 was in minor phylogroup PVYO-O5, and both Mexican isolate YN-Mex43 and U.S.A. isolates YN-MT12_Oth288, YN-MT12_Oth295, and YN-WWAA150131G42 were in minor phylogroup PVYEu-N. When combined, these new findings and those from the eight historical UK isolates sequenced earlier provide important historical insights concerning the diversity of early PVY populations in Europe and the appearance of recombinants in that part of the world. They and four recent Australian isolates sequenced earlier also provide geographical insights about the geographical distribution and diversity of PVY populations in Australia and North America.

DIFFERENCE IN THE TRANSMISSION OF PVY° TO POTATO AND TOBACCO BY THE POTATO APHID, MACROSIPHUM EUPHORBIAE (THOMAS): EFFECTS OF PROBING DURATION AND FREQUENCY

1991 ◽  
Vol 123 (4) ◽  
pp. 869-874 ◽  
Author(s):  
Gilles Boiteau ◽  
R.P. Singh
Keyword(s):  
Causal Relationship ◽  
Short Duration ◽  
Potato Virus ◽  
Potato Virus Y ◽  
Macrosiphum Euphorbiae ◽  
Tobacco Plants ◽  
Potato Aphid ◽  
Probing Behavior ◽  
Pvy Transmission ◽  
Nonpersistent Viruses

AbstractThe probing behavior of the potato aphid, Macrosiphum euphorbiae (Thomas), is significantly different on potato than on tobacco plants. The higher frequency of short-duration probes, ideal for the transmission of nonpersistent viruses, is the apparent cause for the higher rate of potato virus Y° (PVY°) transmission on tobacco than on potato. However, experimental augmentation of short inoculation probes by M. euphorbiae on potato and tobacco failed to increase PVY° transmission on either. These results demonstrate the absence of a causal relationship between variations in probing behavior of M. euphorbiae and variations in the transmissibility of PVY° by this vector on tobacco and potato.

SOME EFFECTS OF FORMALDEHYDE ON POTATO VIRUS Y IN VITRO, AND ABILITY OF APHIDS TO TRANSMIT THE VIRUS WHEN THEIR STYLETS ARE TREATED WITH FORMALDEHYDE

1955 ◽  
Vol 1 (9) ◽  
pp. 783-793 ◽  
Author(s):  
R. H. E. Bradley ◽  
R. Y. Ganong
Keyword(s):  
Potato Virus ◽  
Myzus Persicae ◽  
Potato Virus Y ◽  
Tobacco Plants ◽  
Considerable Distance ◽  
Formaldehyde Treatment ◽  
Aphid Vectors ◽  
Infected Tobacco

Potato virus Y (PVY) was made noninfective by incubation with formaldehyde in vitro. Yet this noninfective virus reacted with PVY antiserum and caused antibodies to be produced in rabbits as readily as infective PVY. A method is described for baring the stylets of living aphids beyond the end of the labium, which normally encloses the stylets. Specimens of Myzus persicae (Sulz.) infective with PVY were made noninfective by treating the stylets for 30 sec. with concentrations of formaldehyde as low as 0.03%; and 0.25% formaldehyde caused the same effect in five seconds. Aphids were also made noninfective when the proboscis with the tip of the stylets bared was treated with formaldehyde, even after the stylets had been inserted a considerable distance into infected tobacco plants. By contrast, aphids usually remained infective when the proboscis with the stylets enclosed in the labium was treated with similar concentrations of formaldehyde. However, formaldehyde treatment of the stylets did not affect the ability of aphids immediately thereafter to acquire and transmit PVY. These results are compatible with the hypothesis that viruses transmitted like PVY are carried by the stylets of their aphid vectors.

Patterns of phenylpropanoids in non-inoculated and potato virus Y-inoculated leaves of transgenic tobacco plants expressing yeast-derived invertase

2001 ◽  
Vol 56 (6) ◽  
pp. 535-541 ◽  
Author(s):  
Alfred Baumert ◽  
Hans-Peter Mock ◽  
Jürgen Schmidt ◽  
Karin Herbers ◽  
Uwe Sonnewald ◽  
...  
Keyword(s):  
Transgenic Tobacco ◽  
Potato Virus ◽  
Potato Virus Y ◽  
Transgenic Tobacco Plants ◽  
Tobacco Plants

Elevated CO2 alleviates damage from Potato virus Y infection in tobacco plants

Plant Science ◽  
2010 ◽  
Vol 179 (3) ◽  
pp. 219-224 ◽  
Author(s):  
Lefu Ye ◽  
Xue Fu ◽  
Feng Ge
Keyword(s):  
Elevated Co2 ◽  
Potato Virus ◽  
Potato Virus Y ◽  
Tobacco Plants

scholarly journals Salicylic Acid Suppresses Potato virus Y Isolate N:O-Induced Symptoms in Tobacco Plants

2006 ◽  
Vol 96 (3) ◽  
pp. 255-263 ◽  
Author(s):  
Xianzhou Nie
Keyword(s):  
Salicylic Acid ◽  
Potato Virus ◽  
Systemic Acquired Resistance ◽  
Potato Virus Y ◽  
Early Stage ◽  
Acquired Resistance ◽  
Partial Recovery ◽  
Pr Genes ◽  
Tobacco Plants ◽  
Systemic Development

The effects of salicylic acid (SA) and 1-aminocyclopropane-1-carboxylic acid (ACC) on the systemic development of symptoms induced by a severe isolate of Potato virus Y group N:O (PVYN:O) in tobacco were investigated. Upon inoculation, the systemic development of symptoms in tobacco plants could be divided into three stages: virus incubation stage, rapid symptom-progress stage, and partial recovery and symptom-shifting stage. Treatment of seedlings with SA delayed the virus-induced necrosis in stems by 1 to 2 days. SA, not ACC, also significantly suppressed the symptom severity in stems. However, neither SA nor ACC treatment affected the partial recovery phenotype exhibited in the latterly emerged upper parts of the plants. Further analysis indicated that the accumulation of PVY was retarded by SA at the early stage of infection, and the effects were more profound in stems than leaves. Peroxidase (POX) activity and pathogenesis-related (PR) genes PR-1a and PR-1b were enhanced by PVY infection. SA not only increased POX activity in stems and PR genes in stems and leaves of mock-inoculated plants, but also elevated the activity of POX in both leaves and stems and the expression of PR-1a in leaves of PVY-infected plants. Together, the results suggest that systemic acquired resistance plays a key role in suppressing PVYN:O-induced symptom development through SA-mediated and ethylene-independent pathways. The symptom suppression was correlated with reduced replication/ accumulation of virus at the early stage of infection. The results also suggest that neither SA nor ethylene plays a role in the recovery phenotype.

Effects of heat treatment on metabolism of tobacco plants infected with Potato virus Y

Plant Biology ◽  
2021 ◽  
Author(s):  
V. Hýsková ◽  
K. Bělonožníková ◽  
V. Doričová ◽  
D. Kavan ◽  
S. Gillarová ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Potato Virus ◽  
Potato Virus Y ◽  
Tobacco Plants

scholarly journals Antigenic Relationship between Puerto Rican Pepper-Mosaic Virus and a Strain of Potato Virus Y

1969 ◽  
Vol 39 (3) ◽  
pp. 165-167
Author(s):  
J. Enrique Pérez ◽  
J. Adsuar
Keyword(s):  
Puerto Rican ◽  
Mosaic Virus ◽  
Potato Virus ◽  
Potato Virus Y ◽  
Antigenic Relationship ◽  
Tobacco Plants ◽  
Antigenic Component ◽  
Cross Absorption ◽  
Typical Strain ◽  
A Minor

Antisera were prepared against the Puerto Rican pepper-mosaic virus (P.R.P.M.) and a typical strain of potato virus Y by inoculating rabbits with clarified sap from tobacco plants infected separately with each virus. All the four sera thus prepared reacted with both antigens. Cross-absorption tests showed that the P.R.P.M. virus possessed a minor antigenic component not found in the Y virus.

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