scholarly journals OCCURRENCE OF ARTICHOKE LATENT POTYVIRUS (ARLV) AND TOMATO SPOTTED WILT VIRUS (TSWV) AS MIXED INFECTION IN ARTICHOKE PRODUCTION AREAS

2019 ◽  
Vol 17 (4) ◽  
Author(s):  
H FIDAN
Keyword(s):  
Mixed Infection ◽  
Tomato Spotted Wilt Virus ◽  
Tomato Spotted Wilt ◽  
Production Areas ◽  
Wilt Virus

scholarly journals Incidence of viruses infecting pepper in Thailand

2019 ◽  
Vol 10 (1) ◽  
pp. 184-193
Author(s):  
Amisa Laprom ◽  
Somrudee Nilthong ◽  
Ekachai Chukeatirote
Keyword(s):  
Mosaic Virus ◽  
Mixed Infection ◽  
Tomato Spotted Wilt Virus ◽  
Potato Virus Y ◽  
Enzyme Linked Immunosorbent Assay ◽  
Mixed Infections ◽  
The North ◽  
Tomato Spotted Wilt ◽  
Wilt Virus ◽  
Chilli Veinal Mottle Virus

AbstractThis study was conducted to determine the incidence, diversity and distribution of viruses infecting pepper (Capsicum spp.) in the central, northern and northeastern parts of Thailand. During a survey in 2016 - 2019, a total of 2,149 leaf samples from symptomatic and asymptomatic peppers were collected randomly from farmer’s fields, and preliminary tested by an enzyme-linked immunosorbent assay (ELISA) using 7 antibodies specific for cucumber mosaic virus (CMV), chilli veinal mottle virus (ChiVMV), tomato necrotic ringspot virus (TNRV), tobacco mosaic virus (TMV), potato virus Y (PVY), tomato spotted wilt virus (TSWV), and begomoviruses. Our data revealed that the incidence of the viruses infecting pepper in Thailand was high, accounting for nearly 70% (1,482 infected samples). The highest viral incidence was found in the central part (96%), followed by the north (74.4%) and the northeastern (52.8%), respectively. Begomoviruses, CMV, ChiVMV, and TNRV were detected in the samples at varying rates, whereas PVY, TMV, and TSWV were not detected. Of these, the most frequently found virus was Begomoviruses accounting for nearly 33%, with the highest rate (ca. 82%) in the central Provinces of Thailand. In addition, of the 1,482 infected samples, mixed infections among the four viruses were also found in 616 samples (ca. 42%), and CMV + ChiVMV (approximately 11%) was the most common mixed infection. This is the first report describing an occurrence of viruses in pepper of Thailand, and the results obtained have revealed that viruses infecting pepper are widespread, which may pose a threat to pepper production in Thailand.

scholarly journals A New Dominantly Inherited Source of TSWV Resistance in Tomato Derived from L. chilense, which Resists Isolates that Overcome Sw-5

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 991A-991 ◽  
Author(s):  
Mikel R. Stevens ◽  
John W. Scott ◽  
John J. Cho ◽  
Bradley D. Geary ◽  
Frederic D. Memmott
Keyword(s):  
Tomato Spotted Wilt Virus ◽  
Single Gene ◽  
Dominant Gene ◽  
Field Studies ◽  
Limiting Factor ◽  
Tomato Production ◽  
Tomato Spotted Wilt ◽  
Greenhouse Screening ◽  
Production Areas ◽  
Wilt Virus

Tomato spotted wilt virus (TSWV), a tospovirus, is a thrips-vectored disease infecting more than 1000 species of both monocots and dicots, including many species of agriculture importance. TSWV is the limiting factor for tomato (Lycopersicum esculentum Mill.) production in several areas of the world. For a number of years, the Sw-5 gene (derived from L. peruvianum Mill.) has provided acceptable control of this disease. Recently, Sw-5 derived resistance has been overcome by virulent pathogen isolate(s) in tomato production areas such as Spain and Italy. In earlier studies, we identified a potential new source of resistance to TSWV derived from L. chilense Dun. accession LA 1938. In a set of recent field studies, it was demonstrated that this putative new source of resistance was highly resistant to TSWV in Hawaii, Florida/Georgia, and South Africa. Furthermore, greenhouse screening trials have clearly demonstrated that the L. chilense source of TSWV resistance is resistant to isolates that overcome tomatoes homozygous for Sw-5. In these same greenhouse and field studies, there is uniform evidence that this resistance is dominant. Subsequent greenhouse studies suggest that this resistance is controlled by a single gene. Studies have been initiated to verify the inheritance of the gene(s) and to develop linked molecular markers. Furthermore, studies are under way in Australia to test this resistance on non-TSWV tospoviruses. If the data demonstrate that this is a single dominant gene we suggest this gene be designated Sw-7.

scholarly journals Current Status and Potential of RNA Interference for the Management of Tomato Spotted Wilt Virus and Thrips Vectors

Pathogens ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 320
Author(s):  
Alexander Nilon ◽  
Karl Robinson ◽  
Hanu R. Pappu ◽  
Neena Mitter
Keyword(s):  
Rna Interference ◽  
Tomato Spotted Wilt Virus ◽  
Cultural Practices ◽  
Management Strategies ◽  
Current Status ◽  
Horticultural Crops ◽  
Yield And Quality ◽  
Tomato Spotted Wilt ◽  
Wilt Virus

Tomato spotted wilt virus (TSWV) is the type member of the genus Orthotospovirus in the family Tospoviridae and order Bunyavirales. TSWV, transmitted by several species of thrips, causes significant disease losses to agronomic and horticultural crops worldwide, impacting both the yield and quality of the produce. Management strategies include growing virus-resistant cultivars, cultural practices, and managing thrips vectors through pesticide application. However, numerous studies have reported that TSWV isolates can overcome host-plant resistance, while thrips are developing resistance to pesticides that were once effective. RNA interference (RNAi) offers a means of host defence by using double-stranded (ds) RNA to initiate gene silencing against invading viruses. However, adoption of this approach requires production and use of transgenic plants and thus limits the practical application of RNAi against TSWV and other viruses. To fully utilize the potential of RNAi for virus management at the field level, new and novel approaches are needed. In this review, we summarize RNAi and highlight the potential of topical or exogenous application of RNAi triggers for managing TSWV and thrips vectors.

Lipid in a Purified Preparation of Tomato Spotted Wilt Virus

Nature ◽  
1964 ◽  
Vol 203 (4945) ◽  
pp. 671-672 ◽  
Author(s):  
RUPERT J. BEST ◽  
GERARD F. KATEKAR
Keyword(s):  
Tomato Spotted Wilt Virus ◽  
Tomato Spotted Wilt ◽  
Wilt Virus
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