Iris yellow spot virus (IYSV; genus Tospovirus, family Bunyaviridae) is an important emerging pathogen of Alliums worldwide. During a tospovirus disease survey in July 2015, garlic and leek plants displaying suspected IYSV symptoms were found at 3 farms in Goromonzi, Mutasa, and Nyanga districts of ...
Author(s)
Karavina, C.; Ibaba, J. D.; Gubba, A.; Pappu, H. R.
Publisher
American Phytopathological Society (APS Press), St. Paul, USA
Citation
Plant Disease, 2016, 100, 3, pp 657
In 2011, maize lethal necrosis (MLN) was reported from Bomet, Kenya, as a result of coinfection of maize with Maize chlorotic mottle virus (MCMV) (genus Machlomovirus) and Sugarcane mosaic virus (SCMV) (genus Potyvirus). MLN was later reported from other locations in Kenya and other African...
Author(s)
Kusia, E. S.; Subramanian, S.; Nyasani, J. O.; Khamis, F.; Villinger, J.; Ateka, E. M.; Pappu, H. R.
Publisher
American Phytopathological Society (APS Press), St. Paul, USA
Citation
Plant Disease, 2015, 99, 6, pp 899-900
Taxonomy: Iris yellow spot virus (IYSV) is in the genus Tospovirus, family Bunyaviridae, with a single-stranded, tri-segmented RNA genome with an ambisense genome organization. Members of the other genera in the family infect predominantly vertebrates and insects. Geographical distribution: IYSV is ...
Author(s)
Bag, S.; Schwartz, H. F.; Cramer, C. S.; Havey, M. J.; Pappu, H. R.
Publisher
Wiley-Blackwell, Oxford, UK
Citation
Molecular Plant Pathology, 2015, 16, 3, pp 224-237
Tomato is one of the most popular vegetables and a major source of nutrition and income for smallholders in Africa. Thrips-transmitted tospoviruses are among the economically important pathogens of tomatoes that causes significant crop losses worldwide. In surveys for Tomato spotted wilt virus in...
Author(s)
Birithia, R.; Subramanian, S.; Villinger, J.; Muthomi, J. W.; Narla, R. D.; Pappu, H. R.
Publisher
American Phytopathological Society (APS Press), St. Paul, USA
Citation
Plant Disease, 2012, 96, 9, pp 1384-1385
Iris yellow spot virus (IYSV), transmitted by Thrips tabaci, is an economically important viral pathogen of bulb and seed onion crops in many onion-growing areas of the world. In Africa, IYSV has been reported in Reunion and South Africa. In September 2009, symptoms suspected to be caused by IYSV...
Author(s)
Birithia, R.; Subramanian, S.; Pappu, H. R.; Sseruwagi, P.; Muthomi, J. W.; Narla, R. D.
Publisher
American Phytopathological Society (APS Press), St. Paul, USA
Citation
Plant Disease, 2011, 95, 9, pp 1195-1196
In June 2008, diamond-shaped lesions that are typical of Iris yellow spot virus (IYSV) were observed on onion seed scapes in an onion plot at Reduit in the central part of Mauritius. Disease incidence was 80% with a severity of 50-75% of the scape surface area. Lodging was observed in 25% of the...
Author(s)
Lobin, K.; Saison, A.; Hostachy, B.; Benimadhu, S. P.; Pappu, H. R.
Publisher
American Phytopathological Society (APS Press), St. Paul, USA
Citation
Plant Disease, 2010, 94, 11, pp 1373
In September 2009 in Mauritius, plants with reduced leaf size, leaf curling, and yellow margins associated with plant dwarfism were observed in open-field tomato crops in the southern part of the island. Whitefly populations were observed in these fields. These symptoms were suggestive of infection ...
Author(s)
Lobin, K.; Druffel, K. L.; Pappu, H. R.; Benimadhu, S. P.
Publisher
American Phytopathological Society (APS Press), St. Paul, USA
Citation
Plant Disease, 2010, 94, 10, pp 1261
The disease cause by thrips-transmitted Iris yellow spot virus (IYSV; Tospovirus, Bunyaviridae) has become a major constraint to bulb and seed onion crops in several parts of the country and the world. As part of an ongoing survey for IYSV incidence in onion in the western USA, commercial fields in ...
Author(s)
Bag, S.; Singh, J.; Davis, R. M.; Chounet, W.; Pappu, H. R.
Publisher
American Phytopathological Society (APS Press), St. Paul, USA
Citation
Plant Disease, 2009, 93, 6, pp 674
Leaves of greenfoxtail (S. viridis) were collected from 2 naturally occurring plants ∼30 m apart in a weed trial conducted in commercial onions grown in Box Elder County, Utah, USA, on 24 September 2008. Notes of Iris yellow spot virus (IYSV) symptoms on green foxtail were made only on the 2 grass...
Author(s)
Evans, C. K.; Bag, S.; Frank, E.; Reeve, J.; Ransom, C.; Drost, D.; Pappu, H. R.
Publisher
American Phytopathological Society (APS Press), St. Paul, USA
Citation
Plant Disease, 2009, 93, 6, pp 670-671
Samples of Iris yellow spot virus (IRSV) were obtained from maize, wheat, grapes, mint, carrot, lucerne and sugar beet from Idaho and Washington, USA during 2006. IRSV is a Thrips tabaci-transmitted plant pathogen, and was observed via molecular assays on volunteer onions and the following weeds: ...
Author(s)
Sampangi, R. K.; Mohan, S. K.; Pappu, H. R.
Publisher
American Phytopathological Society (APS Press), St. Paul, USA
Citation
Plant Disease, 2007, 91, 12, pp 1683