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Bermuda Grass as a Potential Reservoir Host for Grapevine fanleaf virus
K Izadpanah1, M Zaki-Aghl1, Y P Zhang2
1Department of Plant Protection, College of Agriculture, Shiraz University, Shiraz, Iran.
Plant Disease
|March 1, 2019
Summary
Grapevine fanleaf virus (GFLV) was detected in Bermuda grass (BG) in Iran using RT-PCR and ELISA. This common turfgrass can host GFLV without showing symptoms, posing a risk for virus spread.
Area of Science:
- Plant Virology
- Molecular Diagnostics
- Agricultural Science
Background:
- Grapevine fanleaf virus (GFLV) is a significant pathogen affecting grapevines.
- The potential role of alternative hosts, such as turfgrasses, in GFLV epidemiology is not fully understood.
- Bermuda grass (BG) is a widely cultivated turfgrass globally and in Iran.
Purpose of the Study:
- To detect and characterize Grapevine fanleaf virus (GFLV) in Bermuda grass (BG) samples from Iran.
- To investigate the potential of BG as a host for GFLV.
- To assess the transmission and symptomology of GFLV in BG and indicator plants.
Main Methods:
- Detection of GFLV using reverse transcription-polymerase chain reaction (RT-PCR) with specific primers.
- Enzyme-linked immunosorbent assay (ELISA) using antiserum against a North American GFLV isolate.
- Cloning and sequencing of RT-PCR products to confirm GFLV coat protein gene presence.
- Mechanical inoculation of Chenopodium quinoa and BG with GFLV isolates.
Main Results:
- GFLV was detected in BG samples from Iran using both RT-PCR and ELISA.
- RT-PCR confirmed GFLV presence in fresh, dried, and purified BG tissues.
- Sequencing verified the amplified products as parts of the GFLV coat protein gene.
- GFLV induced mild or no symptoms in BG but was transmissible to C. quinoa, causing varied symptoms.
- A North American GFLV isolate was mechanically transmissible to BG.
Conclusions:
- Bermuda grass (BG) serves as a host for Grapevine fanleaf virus (GFLV) in Iran, often asymptomatically.
- GFLV-infected BG is widespread in the Fars province of Iran, indicating a potential reservoir for the virus.
- The findings highlight the importance of considering turfgrasses in GFLV management and disease control strategies.
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