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Vaccinia Virus Infection & Temporal Analysis of Virus Gene Expression: Part 1
Published on: April 8, 2009
First Report of Grapevine Syrah virus-1 in Chilean Grapevines
E A Engel1, P A Rivera2, P D T Valenzuela1
1Fundación Ciencia para la Vida and MIFAB, Zañartu 1482, Universidad Andrés Bello, Facultad de Ciencias Biológicas, República 217, Santiago, Chile.
Grapevine Syrah virus-1 (GSyV-1), a marafivirus, has been detected for the first time in Chilean grapevines. This finding is crucial for understanding grapevine virus epidemiology and managing potential economic impacts in the region.
Area of Science:
- Plant Pathology
- Virology
- Agricultural Science
Background:
- Grapevine viral diseases cause significant global economic damage.
- Over 10 viral species have been previously identified in Chilean grapevines.
- Grapevine Syrah virus-1 (GSyV-1), a marafivirus, was recently identified in California.
Purpose of the Study:
- To report the first detection of Grapevine Syrah virus-1 (GSyV-1) in Chile.
- To characterize the GSyV-1 isolate found in Chilean grapevines.
Main Methods:
- Dormant cane samples from 12 grapevine cultivars across Chile were collected.
- Reverse transcription-PCR (RT-PCR) was employed for viral detection using specific primers.
- Partial sequences of the methyltransferase and coat protein genes were amplified and sequenced.
Main Results:
- GSyV-1 was detected in one Syrah cultivar sample from Chile's VI region.
- Sequencing revealed high nucleotide and amino acid identities with Californian GSyV-1 isolates.
- The positive sample was co-infected with Grapevine fleck virus and Grapevine rupestris stem pitting-associated virus.
Conclusions:
- This study represents the first documented occurrence of GSyV-1 in Chile.
- Further research is necessary to determine the prevalence and impact of GSyV-1 on Chilean viticulture.
- The findings contribute to the understanding of grapevine virus distribution and management strategies.
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