scholarly journals Characterization of Potato virus Y (PVY) molecular determinants involved in the vein necrosis symptom induced by PVYN isolates in infected Nicotiana tabacum cv. Xanthi

2005 ◽  
Vol 86 (7) ◽  
pp. 2101-2105 ◽  
Author(s):  
Michel Tribodet ◽  
Laurent Glais ◽  
Camille Kerlan ◽  
Emmanuel Jacquot
Keyword(s):  
Nicotiana Tabacum ◽  
Potato Virus ◽  
Potato Virus Y ◽  
Sequence Data ◽  
Site Directed Mutagenesis ◽  
Molecular Determinant ◽  
Molecular Determinants ◽  
Vein Necrosis ◽  
Genetic Techniques

Viral molecular determinant(s) involved in the tobacco vein necrosis (TVN) symptom induced by necrotic isolates of Potato virus Y (PVY) on Nicotiana tabacum cv. Xanthi leaves remain undetermined. Reference isolates belonging to PVYN (infectious PVYN-605 clone) and PVYO (PVYO-139) were used to produce PVY chimeric genomes by using reverse-genetic techniques. These chimeric clones were inoculated biolistically onto Nicotiana clevelandii plants to establish the clone, prior to being tested on N. tabacum for their ability to induce TVN symptoms. Comparison between sequence data and symptoms observed for each mutated PVY construct shows that the C-terminal part of the multifunctional HC-Pro protein includes two residues (K400 and E419) that are involved in TVN induced by PVYN isolates. Site-directed mutagenesis was used to confirm that these two HC-Pro residues are involved in the TVN phenotype.

scholarly journals Characterization of a Novel Resistance-Breaking Isolate of Potato Virus Y in Nicotiana Tabacum

2014 ◽  
Vol 3 (1) ◽  
pp. 01-10
Author(s):  
Jae-Hyun Kim ◽  
Young-Soo Kim ◽  
Soo-Won Jang ◽  
Yong-Ho Jeon
Keyword(s):  
Potato Virus ◽  
Potato Virus Y ◽  
Biological Properties ◽  
Systemic Movement ◽  
Pvy Resistance ◽  
Resistance Breaking ◽  
Systemic Vein ◽  
Vein Necrosis ◽  
Tobacco Cultivar

Potato virus Y (PVY) was identified from a PVY-resistance flue-cured tobacco variety KF120 showing vein necrosis at Buron province, Korea. Biological properties of the isolate named PVY-ToBR1 was characterized using various host plants with another isolate PVY-ToJC37. The isolated PVY-ToBR1 induced systemic vein necrosis symptoms on a PVY-resistant tobacco cultivar (VAM) harboring potyvirus resistant va gene, though tissue printing showed the systemic movement of virus was slightly delayed. By contrast, the isolate PVY-ToJC37 failed to infect VAM plants and the virus was not detected on inoculated leaf and systemic leaves in VAM plants. Similarly, the isolated PVY-ToBR1 induced distinctly systemic vein necrosis symptoms on PVY-resistant tobacco cultivars (V.SCR, PBD6, TN86, TN90, Virgin A Mutant, NC744, and Wislica) that have the recessive potyvirus resistance gene va, but PVY-ToJC37 did not infect systemically infect these tobacco cultivars, suggesting that PVY-ToBR1 is a novel resistance-breaking isolate in tobacco. The coat protein (CP) genes of PVY-ToBR1 and PVY-ToJC37 were amplified using RT-PCR assays with specific primers for PVY isolates and nucleotide sequences of the CP genes were determined. The isolate PVY-ToBR1 showed 88.4% - 99.4% and 86.6% - 99.4% CP identities to the 46 different PVY isolates at the nucleotide and amino acid, respectively. Phylogenetic relationship from CP comparisons showed that PVY-ToBR1 isolate clustered with PVYNTN isolates and PVY-ToBR1 isolate more closely related to the isolates from European than from North American PVY NTN.

scholarly journals Identification of new Potato virus Y (PVY) molecular determinants for the induction of vein necrosis in tobacco

2012 ◽  
Vol 13 (8) ◽  
pp. 948-959 ◽  
Author(s):  
FLORENCE FAUREZ ◽  
THOMAS BALDWIN ◽  
MICHEL TRIBODET ◽  
EMMANUEL JACQUOT
Keyword(s):  
Potato Virus ◽  
Potato Virus Y ◽  
Molecular Determinants ◽  
Vein Necrosis

Molecular and biological characterization of recombinant isolates of Potato virus Y circulating in potato fields in Mexico

Plant Disease ◽  
2020 ◽  
Author(s):  
Mariana Rodriguez-Rodriguez ◽  
Arturo Quintero-Ferrer ◽  
Kelsie Green ◽  
Loreto Robles-Hernández ◽  
Ana C González-Franco ◽  
...  
Keyword(s):  
Potato Virus ◽  
Potato Virus Y ◽  
Potato Production ◽  
Potato Cultivars ◽  
Mitigation Strategies ◽  
Hypersensitive Resistance ◽  
Multiple Introductions ◽  
Vein Necrosis ◽  
Production Areas

Potato virus Y (PVY) is a significant threat to potato production in Mexico. The presence of recombinant strains of PVY circulating in potato has been reported in the country, but no systematic study on the genetic diversity of PVY in potato and prevalence of PVY strains has been conducted yet. Here, we report on a series of surveys in seed potato production areas in two states in Mexico, Chihuahua and Jalisco, between 2011 and 2019. PVY was detected through the period of nine years in multiple potato cultivars in both states, often remaining asymptomatic in the most popular cultivars, such as Fianna and Agata. When typed to strain, all PVY samples studied were found to have N-serotype, and were all identified molecularly as isolates of the same recombinant strain, PVYNTN. Five of these PVY isolates were tested on tobacco, where they induced vein necrosis supporting the molecular typing. This identification was also confirmed biologically on differential potato cultivars, where one PVYNTN isolate from the 2013 survey triggered the hypersensitive resistance conferred by the Nztbr gene in the cv. Maris Bard. Seven of these Mexican PVYNTN isolates, collected between 2013 and 2019, including two PVY isolates from potato tubers exhibiting potato tuber necrotic ringspot disease, were subjected to whole genome sequencing and found to show a typical PVYNTNa recombinant structure. When subjected to phylogenetic analysis, Mexican PVYNTN sequences clustered in more than three separate clades, suggesting multiple introductions of PVYNTN in the country. The wide circulation of the PVYNTN strain in Mexican potato should be taken into account by the potato producers, to develop mitigation strategies for this PVY strain associated with tuber necrotic symptoms.

Distribution and molecular characterization of potato virus Y (PVY) strains infecting potato (Solanum tuberosum) crop in Kashmir (India)

VirusDisease ◽  
2021 ◽  
Author(s):  
Sumiah Wani ◽  
Sahar Saleem ◽  
Sajad U. Nabi ◽  
Gowhar Ali ◽  
Bilal A. Paddar ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Molecular Characterization ◽  
Potato Virus ◽  
Potato Virus Y

A single nucleotide polymorphism-based technique for specific characterization of YO and YN isolates of Potato virus Y (PVY).

2005 ◽  
Vol 125 (1) ◽  
pp. 83-93 ◽  
Author(s):  
Emmanuel Jacquot ◽  
Michel Tribodet ◽  
Flora Croizat ◽  
Valérie Balme-Sinibaldi ◽  
Camille Kerlan
Keyword(s):  
Single Nucleotide Polymorphism ◽  
Potato Virus ◽  
Potato Virus Y ◽  
Nucleotide Polymorphism ◽  
Single Nucleotide

scholarly journals Detection and molecular characterization of Slovak tomato isolates belonging to two recombinant strains of potato virus Y

2016 ◽  
Vol 60 (04) ◽  
pp. 347-353 ◽  
Author(s):  
N. SIHELSKÁ ◽  
L. PREDAJŇA ◽  
A. NAGYOVÁ ◽  
K. ŠOLTYS ◽  
J. BUDIŠ ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Potato Virus ◽  
Potato Virus Y ◽  
Recombinant Strains

scholarly journals Epidemic of Potato virus Y and Cucumber mosaic virus in Henan Province Tobacco

Plant Disease ◽  
2001 ◽  
Vol 85 (4) ◽  
pp. 447-447 ◽  
Author(s):  
X. D. Li ◽  
Y. Q. Li ◽  
H. G. Wang
Keyword(s):  
Cucumber Mosaic Virus ◽  
Mosaic Virus ◽  
Potato Virus ◽  
Potato Virus Y ◽  
Early Stage ◽  
Potato Virus X ◽  
Henan Province ◽  
Enzyme Linked Immunosorbent Assay ◽  
Resistant Varieties ◽  
Vein Necrosis

Flue-cured tobacco is an important crop in Henan Province, China. During the 2000 growing season, many tobacco plants showed various degrees of mottling, mosaic, vein clearing, or vein necrosis in most of the counties. Some plants even died at an early stage of growth. A survey was conducted in May-June in several tobacco-growing counties, and the incidence of symptomatic plants in individual fields ranged from 10 to 85%. The most widely planted tobacco varieties, NC89, K326, and K346, were highly susceptible. Symptomatic plants were collected from Jiaxian and Xiangcheng counties and samples were tested by enzyme-linked immunosorbent assay for Tobacco mosaic virus (TMV), Cucumber mosaic virus (CMV), Potato virus Y (PVY), and Potato virus X (PVX). Of 65 samples tested, 21 were positive for only PVY, 16 positive for only CMV, one each was positive for only TMV or PVX. Nineteen samples were doubly infected with various combinations of these viruses and six were infected with combinations of three viruses. The causal agent(s) in the remaining sample could not be determined. In total, CMV was detected in 40 samples, PVY in 38, PVX in 10, and TMV in 7 samples. TMV and CMV used to be the most important viruses and PVY occurred only rarely. But PVY has become prevalent in Henan and in neighboring Shandong province (2). CMV and TMV were reported to be the most prevalent viruses in Shanxi (1) and Fujian Provinces (3). Because resistant varieties are not available, and mixed infections are more common, the results presented here explain why huge damage is occurring in tobacco crops in recent years. Some varieties are partially resistant to TMV and CMV but the varieties commonly grown are highly susceptible to PVY. Therefore, breeding for resistance to viruses, especially to PVY, is urgent to control the occurrence of tobacco viral diseases. References: (1) J. L. Cheng et al. Acta Tabacaria Sin. 4:43, 1998. (2) J. B. Wang et al. Chinese Tobacco Sci. 1:26, 1998. (3) L. H. Xie et al. Acta Tabacaria Sin. 2:25, 1994.

scholarly journals Detection and genome characterization of Potato virus Y isolates infecting potato (Solanum tuberosum L.) in La Union (Antioquia, Colombia)

2016 ◽  
Vol 34 (3) ◽  
pp. 317-328 ◽  
Author(s):  
Pablo Gutiérrez S. ◽  
Mauricio Marín M. ◽  
Daniel Muñoz E.
Keyword(s):  
Solanum Tuberosum ◽  
Potato Virus ◽  
Potato Virus Y ◽  
Seed Tuber ◽  
Rt Pcr ◽  
Potato Plants ◽  
Nextgeneration Sequencing ◽  
Prevalent Strain ◽  
Detailed Molecular Analysis

Potato virus Y (PVY) is one of the most severe viruses affecting the production of potato (Solanum tuberosum) in the world. This study presents a detailed molecular analysis using nextgeneration sequencing (NGS), IC-RT-qPCR and RT-PCR on the PVY isolates infecting seed-tubers and foliage of potato plants cv. Diacol-Capiro in La Union (Antioquia, Colombia). Analysis of incidence by IC-RT-qPCR in 15 random leaf samples of three cultivation plots and fifteen sprouting tuber eye-buds reveal infection levels between 13.4 and 80%; a higher incidence of 86.7% was observed in seed-tuber samples with threshold cycle (Ct) values as low as 24.3. Genome assembly from a bulk of foliage samples resulted in a consensus PVY genome (PVY_LaUnionF) of 9,702 nt and 399 polymorphic sites within the polyprotein ORF; while the assembled genome from sprouts of tubers has 9,704 nt (PVY_LaUnionT) and contained only six polymorphic nucleotide sites. Phylogenetic analysis demonstrates that the PVY isolates from leaf samples are in the recombinant PVYNTN group (sequence identity >99%); while those from tuber sprouts are in the PVYN/NTN group with identities above 95%. Sanger sequencing of viral capsid suggests the presence of a third variant related to PVYO, a prevalent strain reported in potato fields worldwide.

Characterization of a Novel Far-Eastern Potato Virus Y Isolates

2009 ◽  
Vol 8 (2) ◽  
pp. 62-67 ◽  
Author(s):  
Yury G. Volkov ◽  
Nadezhda N. Kakareka ◽  
Larissa A. Balabanova ◽  
Zinaida N. Kozlovskay ◽  
Mikhail V. Sapotsky
Keyword(s):  
Potato Virus ◽  
Potato Virus Y ◽  
Far Eastern
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