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First Report of Chickpea chlorotic dwarf virus Infecting Hot Pepper in India
1Department of Genetic Engineering, Sungkyunkwan University, Suwon, Korea.
Plant Disease
|February 1, 2019
Summary
Chickpea chlorotic dwarf virus (CpCDV) has been identified for the first time in India infecting hot pepper plants. This discovery highlights a new threat to chili crops, necessitating further research into disease management strategies.
Area of Science:
- Plant Virology
- Molecular Biology
- Agricultural Science
Background:
- Hot pepper (Capsicum annuum) in India is susceptible to geminiviruses causing significant crop loss.
- Leaf curl diseases, caused by viruses like Chilli leaf curl virus and Pepper leaf curl virus, are major concerns for hot pepper production.
Purpose of the Study:
- To identify the specific virus causing leaf curl and stunting symptoms in hot pepper plants in Bangalore, India.
- To characterize the identified viral isolate genetically and determine its relationship to known viral strains.
Main Methods:
- Viral DNA extraction from infected hot pepper using a commercial kit.
- Rolling circle amplification of viral DNA.
- Restriction enzyme digestion, cloning, and sequencing of amplified DNA fragments.
- BLAST analysis for viral identification and comparison with existing sequences.
Main Results:
- A 2.6-kb DNA fragment was identified as Chickpea chlorotic dwarf virus (CpCDV), a Mastrevirus species.
- The CpCDV-Bangalore isolate (2,585 bases) showed 85.9% to 98.5% sequence identity with other CpCDV isolates.
- This is the first documented occurrence of CpCDV infecting hot pepper in India.
Conclusions:
- Chickpea chlorotic dwarf virus (CpCDV) is confirmed as a pathogen of hot pepper in India.
- The CpCDV-Bangalore isolate represents a distinct strain with the lowest sequence identity (85.9%) reported for CpCDV infecting pepper.
- This finding necessitates monitoring and management strategies for CpCDV in Indian hot pepper cultivation.
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