First Report of Potato Leafroll Virus in Ulluco (Ullucus tuberosus Caldas).

Plant Disease ◽  
1996 ◽  
Vol 80 ◽  
pp. 344 ◽  
Author(s):  
C. Lizarraga
Keyword(s):  
Potato Leafroll Virus ◽  
First Report ◽  
Ullucus Tuberosus ◽  
Leafroll Virus

Molecular Characterization of Potato leafroll virus, Potato virus A, and Potato virus X Isolates from Potatoes in Alaskan Cities and Villages

2011 ◽  
Vol 12 (1) ◽  
pp. 39 ◽  
Author(s):  
Nancy L. Robertson ◽  
Jeffrey Smeenk ◽  
Jodie M. Anderson
Keyword(s):  
Molecular Characterization ◽  
Potato Virus ◽  
Potato Virus X ◽  
Potato Leafroll Virus ◽  
First Report ◽  
Potato Virus A ◽  
Potato Viruses ◽  
The World ◽  
Leafroll Virus

Although all three viruses are commonly found in potatoes throughout the world, this is the first report of potato viruses from Alaska to be sequenced and molecularly analyzed for comparisons with known viruses. Accepted for publication 17 January 2011. Published 9 February 2011.

scholarly journals First Report of Solanum sarrachoides (Hairy Nightshade) as an Important Host of Potato leafroll virus

Plant Disease ◽  
2002 ◽  
Vol 86 (5) ◽  
pp. 559-559 ◽  
Author(s):  
P. E. Thomas
Keyword(s):  
Green Peach Aphid ◽  
Potato Crop ◽  
Potato Leafroll Virus ◽  
Enzyme Linked Immunosorbent Assay ◽  
Columbia Basin ◽  
First Report ◽  
Narrow Host Range ◽  
Potato Plants ◽  
Solanum Sarrachoides ◽  
Leafroll Virus

Potato leafroll virus (PLRV) (genus Polerovirus, family Luteoviridae) is of great economic importance. It has a very narrow host range consisting of only 21 known species, 14 of which are Solanaceae. Ten aphid species transmit PLRV in a persistent manner, but the green peach aphid (Myzus persicae Sulzer) is by far the most important vector and the only important vector in the Columbia Basin of the Pacific Northwest (3). Solanum sarrachoides (Sendtner) may be especially important in the epidemiology of PLRV because it is a predominant weed in potatoes (S. tuberosum L.), other annual crops, and waste areas of the Columbia Basin (1), and herbicides available for potato are relatively ineffective against this weed (2). Since our research began in 1974, we have routinely observed many S. sarrachoides plants throughout the Columbia Basin that acquired an abnormal erect stiff appearance in middle to late summer. Their leaflets curled upward at the margins and expressed interveinal chlorosis and necrosis and a reddened or purple color on abaxial surfaces. The presence of PLRV in symptomatic plants was routinely detected by double-antibody sandwich enzyme-linked immunosorbent assay and by density gradient sedimentation and light absorbance properties of the purified virus when we evaluated the host as a source of purified PLRV in 1980. A systematic study to satisfy the requirements of Koch's postulates to prove that PLRV causes the disease in S. sarrachoides was conducted in 1998. The virus produced typical PLRV symptoms on three young Physalis floridana, Datura stramonium, and potato plants when transmitted by the green peach aphid from each of four symptomatic S. sarrachoides collected from widely spaced potato fields in the Columbia Basin and from purified virus preparations from these plants. Back-transmission from each of these hosts and from purified preparations to S. sarrachoides plants observed the same symptoms. The green peach aphid readily colonized S. sarrachoides in the field, and populations on this host were typically higher than on adjacent potato plants in potato fields. The concentration of PLRV was approximately equal in infected S. sarrachoides and P. floridana plants, as was the efficiency of virus transmission from these hosts by individual green peach aphids. The aphids used in transmission efficacy assays were all the same clone and were reared on the host species assayed. The incidence of PLRV infection among S. sarrachoides in potato fields was typically higher than in the potato crop. Only two other summer annual hosts of PLRV, Amaranthus caudatus and S. nigrum, occur sporadically in potato fields of the Columbia Basin (1). The virus rarely infected these species. To our knowledge, this is the first report that S. sarrachoides is highly susceptible to PLRV and may play an important role in PLRV epidemiology in the Columbia Basin. References: (1) A. G. Ogg, Jr. and B. S. Rogers. Rev. Weed Sci. 4:25, 1989. (2) L. S. Quakenbush and R. N. Anderson. Weed Sci. 33:386, 1985. (3) P. E. Thomas et al. Plant Dis. 81:1311, 1997.

Green peach aphid and potato leafroll virus: transmission and control

2020 ◽  
Author(s):  
R.A. Bagrov ◽  
◽  
V.I. Leunov
Keyword(s):  
Myzus Persicae ◽  
Green Peach Aphid ◽  
Virus Transmission ◽  
Potato Leafroll Virus ◽  
Factors Affecting ◽  
Potato Viruses ◽  
Tuber Necrosis ◽  
Aphid Vectors ◽  
Leafroll Virus ◽  
And Control

The mechanisms of transmission of potato viruses from plants to aphid vectors and from aphids to uninfected plants are described, including the example of the green peach aphid (Myzus persicae, GPA). Factors affecting the spreading of tuber necrosis and its manifestation on plants infected with potato leafroll virus (PLRV) are discussed. Recommendations for PLRV and GPA control in the field are given.

scholarly journals Nucleotide sequence of the potato leafroll virus coat protein gene

1989 ◽  
Vol 17 (4) ◽  
pp. 1768-1768 ◽  
Author(s):  
B. Prill ◽  
E. Maiss ◽  
U. Timpe ◽  
R. Casper
Keyword(s):  
Nucleotide Sequence ◽  
Coat Protein ◽  
Coat Protein Gene ◽  
Protein Gene ◽  
Potato Leafroll Virus ◽  
Virus Coat Protein ◽  
Virus Coat ◽  
Leafroll Virus

scholarly journals Host-Dependent Requirement for the Potato leafroll virus 17-kDa Protein in Virus Movement

2002 ◽  
Vol 15 (10) ◽  
pp. 1086-1094 ◽  
Author(s):  
Lawrence Lee ◽  
Peter Palukaitis ◽  
Stewart M. Gray
Keyword(s):  
Amino Acids ◽  
Solanum Tuberosum ◽  
Nicotiana Benthamiana ◽  
Systemic Infection ◽  
Potato Leafroll Virus ◽  
Virus Movement ◽  
Wild Type ◽  
Mature Leaves ◽  
Leafroll Virus ◽  
Virus Distribution

The requirement for the 17-kDa protein (P17) of Potato leafroll virus (PLRV) in virus movement was investigated in four plant species: potato (Solanum tuberosum), Physalis floridana, Nicotiana benthamiana, and N. clevelandii. Two PLRV P17 mutants were characterized, one that does not translate the P17 and another that expresses a P17 missing the first four amino acids. The P17 mutants were able to replicate and accumulate in agroinoculated leaves of potato and P. floridana, but they were unable to move into vascular tissues and initiate a systemic infection in these plants. In contrast, the P17 mutants were able to spread systemically from inoculated leaves in both Nicotiana spp., although the efficiency of infection was reduced relative to wild-type PLRV. Examination of virus distribution in N. benthamiana plants using tissue immunoblotting techniques revealed that the wild-type PLRV and P17 mutants followed a similar movement pathway out of the inoculated leaves. Virus first moved upward to the apical tissues and then downward. The P17 mutants, however, infected fewer phloem-associated cells, were slower than wild-type PLRV in moving out of the inoculated tissue and into apical tissues, and were unable to infect any mature leaves present on the plant at the time of inoculation.

scholarly journals Hairy Nightshade as a Potential Potato leafroll virus (Luteoviridae: Polerovirus) Inoculum Source in Pacific Northwest Potato Ecosystems

2008 ◽  
Vol 98 (9) ◽  
pp. 985-991 ◽  
Author(s):  
R. Srinivasan ◽  
J. M. Alvarez
Keyword(s):  
Pacific Northwest ◽  
Green Peach Aphid ◽  
Potato Leafroll Virus ◽  
Inoculum Sources ◽  
Inoculum Source ◽  
Hairy Nightshade ◽  
Aphid Density ◽  
Temporal And Spatial ◽  
Green Peach Aphids ◽  
Leafroll Virus

Hairy nightshade, Solanum sarrachoides, is a solanaceous weed found abundantly in Pacific Northwest potato ecosystems. It serves as a reservoir for one of the important potato viruses, Potato leafroll virus (PLRV) (Luteoviridae: Polerovirus), and its most important vector, the green peach aphid, Myzus persicae (Homoptera: Aphididae). Laboratory research indicated an increased green peach aphid settling and performance on S. sarrachoides than on potato. It also revealed that green peach aphids transmitted PLRV more efficiently from S. sarrachoides to potato than from potato to potato. To test the efficiency of S. sarrachoides as an inoculum source in the field, a two season (2004 and 2005) trial was conducted at Kimberly, Idaho. Two inoculum sources, PLRV-infected potato and PLRV-infected S. sarrachoides, were compared in this trial. Green peach aphid density and temporal and spatial PLRV spread were monitored at weekly intervals. Higher densities of green peach aphids were observed on plots with S. sarrachoides and inoculum sources (PLRV-infected S. sarrachoides and potato) than on plots without S. sarrachoides and inoculum sources. PLRV infection in plots with PLRV-infected S. sarrachoides was similar to or slightly higher than in plots with PLRV-infected potato as an inoculum source. Temporal and spatial PLRV spread was similar in plots with either inoculum source. Thus, S. sarrachoides is as efficient as or a better PLRV inoculum source than potato.

Reaction to the potato leafroll virus (PLRV) in diploid potatoes

1988 ◽  
Vol 31 (2) ◽  
pp. 289-296 ◽  
Author(s):  
K. M. Swiezyński ◽  
M. A. Dziewońska ◽  
K. Ostrowska
Keyword(s):  
Potato Leafroll Virus ◽  
Leafroll Virus

Purification and characterization of potato leafroll virus

Virology ◽  
1979 ◽  
Vol 98 (1) ◽  
pp. 45-54 ◽  
Author(s):  
Adib Rowhani ◽  
Richard Stace-Smith
Keyword(s):  
Potato Leafroll Virus ◽  
Purification And Characterization ◽  
Leafroll Virus

Possible correlations between the characteristics of Potato leafroll virus isolates occurring in different geographical regions in Tunisia

2013 ◽  
Vol 42 (2) ◽  
pp. 259-267 ◽  
Author(s):  
Fattouma Djilani Khouadja ◽  
Joelle Rouzé-Jouan ◽  
Sébastien Guyader ◽  
Hatem Fakhfakh
Keyword(s):  
Potato Leafroll Virus ◽  
Geographical Regions ◽  
Leafroll Virus ◽  
Virus Isolates

scholarly journals Resistência de genótipos de batata ao vírus do enrolamento da folha da batata (PLRV) e ao vírus Y (PVY)

2004 ◽  
Vol 22 (3) ◽  
pp. 521-524 ◽  
Author(s):  
Julio Daniels ◽  
Arione da S. Pereira
Keyword(s):  
Potato Virus ◽  
Potato Virus Y ◽  
Rio Grande ◽  
Potato Leafroll Virus ◽  
Rio Grande Do Sul ◽  
Leafroll Virus ◽  
Das Elisa

O vírus do enrolamento da folha da batata (Potato leafroll virus, PLRV) e o vírus Y da batata (Potato virus Y, PVY) constituem as principais causas da degenerescência da batata-semente no Brasil. Com o objetivo de determinar, nas condições do Rio Grande do Sul, a resistência de campo de genótipos de batata à infecção por estes vírus, avaliaram-se, na presença de infectores, durante três plantios consecutivos de primavera, 20 cultivares e clones de batata. A detecção dos vírus foi efetuada por meio de testes sorológicos (DAS-ELISA). Pela análise de agrupamento os genótipos foram separados em três grupos para resistência ao PLRV (Elvira, Achat, Bintje, Monalisa, Monte Bonito, Panda e Araucária, resistentes; Baronesa, Asterix, Atlantic, 2CRI-1149-1-78, C-1226-35-80, Astrid, C-1714-7-94, A-1139-12-92, Macaca, Eliza e Santo Amor, suscetíveis; Catucha e Cristal, muito suscetíveis) e em quatro grupos para resistência ao PVY (Asterix, Astrid, Catucha, Cristal, Macaca, Monte Bonito, A-1139-12-92, C-1226-35-80 e C-1714-7-94, resistentes; Baronesa, Santo Amor, Monalisa, Panda e 2CRI-1149-1-78, resistentes intermediários; Bintje, Atlantic, Elvira e Araucária, suscetíveis; Achat e Eliza, muito suscetíveis).

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