scholarly journals First Report of Sugarcane yellow leaf virus Infecting Grain Sorghum (Sorghum bicolor) in the United States

Plant Disease ◽  
2016 ◽  
Vol 100 (8) ◽  
pp. 1798 ◽  
Author(s):  
C. Wei ◽  
M. Hincapie ◽  
N. Larsen ◽  
G. Nuessly ◽  
P. Rott
Keyword(s):  
United States ◽  
Sorghum Bicolor ◽  
The United States ◽  
Grain Sorghum ◽  
Yellow Leaf ◽  
Sugarcane Yellow Leaf Virus ◽  
First Report ◽  
Leaf Virus

scholarly journals First Report of Sugarcane yellow leaf virus Infecting Barley in Tunisia

Plant Disease ◽  
2014 ◽  
Vol 98 (7) ◽  
pp. 1016-1016 ◽  
Author(s):  
M. Bouallegue ◽  
M. Mezghani-Khemakhem ◽  
H. Makni ◽  
M. Makni
Keyword(s):  
Barley Yellow Dwarf Virus ◽  
Yellow Dwarf ◽  
Dwarf Virus ◽  
Yellow Leaf ◽  
Melanaphis Sacchari ◽  
Sugarcane Yellow Leaf Virus ◽  
First Report ◽  
Yellow Dwarf Virus ◽  
Leaf Virus ◽  
Das Elisa

Sugarcane yellow leaf virus (ScYLV) causes severe leaf symptoms in sugarcane (Saccharum spp.). It is a single-stranded RNA virus assigned to the genus Polerovirus, family Luteoviridae (1). ScYLV is transmitted by two aphid species, Melanaphis sacchari and Rhopalosiphum maidis. Although barley (Hordeum vulgare), oats (Avena sativa), and wheat (Triticum spp.) are susceptible to ScYLV when experimentally inoculated (3), this virus, related serologically to Barley yellow dwarf virus (BYDV)-RPV (4), has never been detected naturally in these cereals. In this study, 240 barley leaves were randomly collected from six fields in Tunisia following a north-south trend during the high infestation periods (March/April) in the 2013 growing season. Samples were tested by DAS-ELISA, using three antibodies (Bioreba AG, Switzerland), two of them, BYDV-B and BYDV-F, specific to luteoviruses corresponding to BYDV-PAV and BYDV-MAV, respectively, and the third one, BYDV-RPV, specific to the polerovirus synonymous to Cereal yellow dwarf virus (CYDV)-RPV. Based on DAS-ELISA, 30 samples were found positive for B/CYDV infection; 17 out of the 30 infected samples contained a single serotype, BYDV-PAV, and 13 out of the 30 infected samples contained two serotypes, PAV and RPV. Total RNA was extracted from all positive samples, and RT-PCR of the viral CP gene was performed with Lu1/Lu4 primers (2). A product of 531 bp was cloned and sequenced. The identities among the sequences determined varied between 80 to 100%, and from the 17 samples containing BYDV-PAV, six distinct BYDV-PAV sequences were revealed and named PAV-TN1 to PAV-TN6 (GenBank Accession No. JX402453 to JX402457 and KF271792). Fortuitously, all 13 positive samples corresponding to the serotypes PAV-RPV exhibited 98.7 to 99.3% identity with ScYLV isolates. These 13 samples contained three distinct sequences that were named ScYLV-Tun1 to ScYLV-Tun3 (GenBank Accession No. KF836888 to KF836890). Of the 17 PAV-positive samples collected, six were infected with PAV-TN1, four with PAV-TN2, four with PAV-TN3, one with PAV-TN4, one with PAV-TN5, and the last one with PAV-TN6. Of the 13 ScYLV-positive samples, seven were infected with ScYLV-Tun1, four with ScYLV-Tun2, and two with ScYLV-Tun3. Phylogenetic analysis showed that PAV-TN sequences formed a very tight cluster (>98%) corresponding to BYDV subspecies PAV-II, whereas all three Tunisian ScYLV sequences were clustered together. This study provides the first report of ScYLV isolates infecting barley crops in Tunisia, and confirms serological cross-reactivity between ScYLV and BYDV-RPV when commercial antibodies against BYDV-RPV are used. References: (1) C. J. D'Arcy and L. L. Domier. Page 891 in: Virus Taxonomy, 8th Report of the ICTV. C. M. Fauquet et al., eds. Springer-Verlag, New York, 2005. (2) N. L. Robertson and R. French. J. Gen. Virol. 72:1473, 1991. (3) S. Schenck and A. T. Lehrer. Plant Dis. 84:1085, 2000. (4) J. Vega et al. Plant Dis. 81:21, 1997.

scholarly journals First Report of Sugarcane yellow leaf virus in Peru

Plant Disease ◽  
2000 ◽  
Vol 84 (12) ◽  
pp. 1342-1342 ◽  
Author(s):  
O. M. Alegría ◽  
M. Chatenet ◽  
J. C. Girard ◽  
S. A. Saldarriaga ◽  
A. Nuget ◽  
...  
Keyword(s):  
Sugar Cane ◽  
Germ Plasm ◽  
Yellow Leaf ◽  
University Of Minnesota ◽  
Sugarcane Yellow Leaf Virus ◽  
First Report ◽  
Light Yellow ◽  
Field Samples ◽  
Almost All ◽  
Leaf Virus

Two sugarcane cultivars, H 50-7209 and H 32-8560, have exhibited unusual, severe leaf yellowing for more than 18 years at Agro Industrial Paramonga S.A. (AIPSA) in Peru. In 1999, these varieties occupied about 4,600 ha (74% of the cultivated area), and almost all fields showed these symptoms. Symptoms first appear on the upper third of the leaf blades, which turns light green to light yellow in young canes up to 6 to 8 months of age. Between 10 and 16 months of age, the symptoms are visible on the spindle and first to third visible dewlap leaves. Tips and margins of older leaves become necrotic, and leaves can turn completely necrotic as the necrosis progresses down the leaves. The abaxial surface of leaf midribs is rarely bright yellow, which differs from the characteristic symptom of yellow leaf syndrome caused by the Sugarcane yellow leaf virus (ScYLV) (1). The most severe symptoms occur when the leaves of stalks that flower turn completely yellow and die. Samples from 98 plants exhibiting different types of yellowing were collected from six commercial fields of cultivars H 50-7209 and H 32-8560 and the germ plasm collection (cultivars PCG 59-1609, Trojan, CP 48-103, CP 72-2086, Q 87, and PR 908) at Paramonga. Tissue blot immunoassay was used to detect ScYLV in the midrib of the top visible dewlap leaf using antiserum provided by B. E. L. Lockhart (University of Minnesota) (2). ScYLV was detected in all 49 commercial field samples and in 35 out of 49 germ plasm samples. All six cultivars of the germ plasm collection were found to be infected, but ScYLV was detected in only a few leaves of Trojan and CP 72-2086. Eighteen cuttings from diseased stalks of cultivars H 50-7209 and H 32-8560 were grown in a greenhouse in Montpellier, France. Yellowing of the underside of the midribs and of the leaf tips appeared after 3 months in cultivar H 50-7209 but only after 9 months in cultivar H 32-8560. At 9 months, the top leaf with a visible dewlap and the four leaves immediately below it of cultivar H 50-7209 exhibited severe yellowing. Reverse transcription polymerase chain reaction with specific ScYLV primers, provided by M. S. Irey (U.S. Sugar Corp., Clewiston, FL) were used to detect ScYLV in the top visible dewlap leaf (1), and ScYLV was found in all nine samples taken from 6-month-old plants of the two cultivars. This is the first report of ScYLV in Peru. References: (1) J. C. Comstock et al. Sugar Cane 4:21, 1998. (2) S. Schenck et al. Sugar Cane 4:5, 1997.

scholarly journals Detection of sugarcane yellow leaf virus and sugarcane mosaic virus in sorghum (Sorghum bicolor (L.) Moench) in the state of Morelos, México

2018 ◽  
Vol 9 (3) ◽  
pp. 423-427
Author(s):  
Daniel Perales-Rosas ◽  
Ricardo Hernández-Pérez ◽  
Dagoberto Guillén-Sánchez ◽  
Víctor López-Martínez ◽  
Irán Alia-Tejacal ◽  
...  
Keyword(s):  
Sorghum Bicolor ◽  
Mosaic Virus ◽  
The State ◽  
Sugarcane Mosaic Virus ◽  
Yellow Leaf ◽  
Sugarcane Yellow Leaf Virus ◽  
Leaf Virus ◽  
Sorghum Bicolor L

scholarly journals Factors Affecting the Transmission and Spread of Sugarcane yellow leaf virus

Plant Disease ◽  
2000 ◽  
Vol 84 (10) ◽  
pp. 1085-1088 ◽  
Author(s):  
S. Schenck ◽  
A. T. Lehrer
Keyword(s):  
The United States ◽  
Meristem Culture ◽  
Yellow Leaf ◽  
Melanaphis Sacchari ◽  
Sugarcane Yellow Leaf Virus ◽  
Saccharum Spp ◽  
Factors Affecting ◽  
Sugarcane Aphid ◽  
Aphid Inoculation ◽  
Leaf Virus

Sugarcane, Saccharum spp. hybrid, is widely infected in the United States and many other countries with a yellowing and stunting disease called sugarcane yellow leaf syndrome. The causal agent, Sugarcane yellow leaf virus (ScYLV), is a Polerovirus of the Luteoviridae family. In this study, it was transmitted by the sugarcane aphid, Melanaphis sacchari, and also by the corn leaf aphid, Rhopalosiphum maidis, and the rice root aphid, R. rufiabdominalis. Two other aphids that infest sugarcane in Hawaii did not transmit the virus. Some Hawaiian sugarcane cultivars are susceptible to ScYLV, while others remain virus-free in the field. The latter were not infected when inoculated with viruliferous M. sacchari. Virus-free plants of susceptible cultivars were produced through apical meristem culture and were readily reinfected by viruliferous M. sacchari. They were also quickly reinfected when planted in a field in proximity to other infected sugarcane naturally infested with M. sacchari. Sugarcane cultivars are hybrids of several Saccharum species. In a field-grown collection of Saccharum and related species, 11 to 71% of the clones of four of the species were infected with ScYLV. None of the related genus Erianthus plants were infected, but four clones were infected experimentally by aphid inoculation. A low to moderate percentage of corn, rice, and sorghum seedlings became infected when inoculated with ScYLV, but barley, oats, and wheat proved to be very susceptible. None of seven weeds common in sugarcane fields were infected with ScYLV.

scholarly journals First Report of Sugarcane yellow leaf virus Infecting Columbus Grass (Sorghum almum) in Florida

Plant Disease ◽  
2016 ◽  
Vol 100 (5) ◽  
pp. 1027 ◽  
Author(s):  
H. V. Espinoza Delgado ◽  
C. Kaye ◽  
M. Hincapie ◽  
W. Boukari ◽  
C. Wei ◽  
...  
Keyword(s):  
Yellow Leaf ◽  
Sugarcane Yellow Leaf Virus ◽  
First Report ◽  
Leaf Virus

First Report of Pathogenicity of Fusarium sporotrichioides and Fusarium acuminatum on Sunflowers in the United States

2010 ◽  
Vol 11 (1) ◽  
pp. 42 ◽  
Author(s):  
F. Mathew ◽  
B. Kirkeide ◽  
T. Gulya ◽  
S. Markell
Keyword(s):  
United States ◽  
Helianthus Annuus ◽  
The United States ◽  
Fusarium Sporotrichioides ◽  
Charcoal Rot ◽  
Koch’S Postulates ◽  
First Report ◽  
Fusarium Acuminatum ◽  
Helianthus Annuus L ◽  
Koch's Postulates

Widespread infection of charcoal rot was observed in a commercial sunflower field in Minnesota in September 2009. Based on morphology, isolates were identified as F. sporotrichioides and F. acuminatum. Koch's postulates demonstrated pathogencity of both species. To our knowledge, this is the first report of F. sporotrichoides and F. acuminatum causing disease on Helianthus annuus L. in the United States. Accepted for publication 23 August 2010. Published 15 September 2010.

scholarly journals First Report of Wisteria vein mosaic virus in Wisteria sinensis in the United States of America

2008 ◽  
Vol 9 (1) ◽  
pp. 42 ◽  
Author(s):  
Rayapati A. Naidu ◽  
Gandhi Karthikeyan
Keyword(s):  
United States ◽  
Mosaic Virus ◽  
United States Of America ◽  
The United States ◽  
Home Gardens ◽  
First Report ◽  
Woody Perennial ◽  
Wisteria Sinensis ◽  
First Time ◽  
Wisteria Vein Mosaic Virus

The ornamental Chinese wisteria (Wisteria sinensis) is a woody perennial grown for its flowering habit in home gardens and landscape settings. In this brief, the occurrence of Wisteria vein mosaic virus (WVMV) was reported for the first time in Chinese wisteria in the United States of America. Accepted for publication 18 June 2008. Published 18 August 2008.

Expansion of Groundnut ringspot virus Host and Geographic Ranges in Solanaceous Vegetables in Peninsular Florida

2011 ◽  
Vol 12 (1) ◽  
pp. 34 ◽  
Author(s):  
Craig G. Webster ◽  
William W. Turechek ◽  
H. Charles Mellinger ◽  
Galen Frantz ◽  
Nancy Roe ◽  
...  
Keyword(s):  
United States ◽  
The United States ◽  
Vegetable Production ◽  
Viral Pathogen ◽  
Geographic Ranges ◽  
First Report ◽  
Geographic Spread ◽  
Wide Range ◽  
Production Areas ◽  
Solanaceous Plants

To the best of our knowledge, this is the first report of GRSV infecting tomatillo and eggplant, and it is the first report of GRSV infecting pepper in the United States. This first identification of GRSV-infected crop plants in commercial fields in Palm Beach and Manatee Counties demonstrates the continuing geographic spread of the virus into additional vegetable production areas of Florida. This information indicates that a wide range of solanaceous plants is likely to be infected by this emerging viral pathogen in Florida and beyond. Accepted for publication 27 June 2011. Published 25 July 2011.

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