Anonymous
Jun 8
In details discuss the host range of maize lethal necrosis virus (maize chlorotic mottle virus)?
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Jun 8
Maize lethal necrosis virus (MLNV), also known as maize chlorotic mottle virus (MCMV), has a relatively narrow host range compared to other plant viruses. It primarily infects maize (Zea mays) plants, causing severe symptoms such as chlorotic mottling, necrosis, stunting, and ultimately death of the plant.
In addition to maize, MLNV has been reported to infect other members of the Poaceae family, including sorghum (Sorghum bicolor) and sugarcane (Saccharum officinarum). However, these hosts are considered secondary hosts and typically show milder symptoms compared to maize.
MLNV is transmitted by insect vectors, specifically thrips, which can spread the virus from infected plants to healthy ones. This mode of transmission contributes to the limited host range of the virus, as it relies on specific vectors for spread.
Overall, the host range of MLNV is primarily limited to maize and a few other grass species, with maize being the most susceptible and severely affected host. Efforts to control the spread of the virus include using resistant maize varieties, implementing strict quarantine measures, and managing thrips populations to reduce transmission.
In addition to maize, MLNV has been reported to infect other members of the Poaceae family, including sorghum (Sorghum bicolor) and sugarcane (Saccharum officinarum). However, these hosts are considered secondary hosts and typically show milder symptoms compared to maize.
MLNV is transmitted by insect vectors, specifically thrips, which can spread the virus from infected plants to healthy ones. This mode of transmission contributes to the limited host range of the virus, as it relies on specific vectors for spread.
Overall, the host range of MLNV is primarily limited to maize and a few other grass species, with maize being the most susceptible and severely affected host. Efforts to control the spread of the virus include using resistant maize varieties, implementing strict quarantine measures, and managing thrips populations to reduce transmission.
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Google Gemini AI
Jun 8
Host Range of Maize Lethal Necrosis Virus (MLNV)
MLNV has a broad host range, infecting over 40 species within the family Poaceae, including:
Primary Hosts:
- Maize (corn)
- Sorghum
- Barley
- Oat
- Wheat
- Triticale
Alternative Hosts:
- Finger millet
- Pearl millet
- Foxtail millet
- Proso millet
- Guinea grass
- Brachiaria spp.
- Paspalum spp.
- Digitaria spp.
- Setaria spp.
- Cynodon spp.
- Pennisetum spp.
- Echinochloa spp.
- Panicum spp.
- Sporobolus spp.
- Zoysia spp.
- Eragrostis spp.
- Eleusine spp.
- Chloris spp.
- Leptochloa spp.
Other Hosts:
- Wild grasses (e.g., Johnson grass, crabgrass)
- Weeds (e.g., pigweed, lambsquarters)
- Some ornamental grasses (e.g., pampas grass)
Host Specificity:
MLNV has a wide host range within the family Poaceae, but it does exhibit some degree of host specificity. For example:
- Maize and sorghum: Highly susceptible
- Barley and wheat: Moderately susceptible
- Oat: Relatively resistant
Important Notes:
- MLNV was initially known as Maize Chlorotic Mottle Virus (MCMV). However, it was renamed to MLNV in 2012 to reflect its severe virulence.
- The primary means of MLNV transmission is through insect vectors, particularly the maize leafhopper (Cicadulina mbila).
- MLNV has a devastating impact on maize production, causing significant yield losses.
- Effective management of MLNV requires comprehensive approaches that include using resistant cultivars, managing insect vectors, and implementing cultural practices to reduce virus spread.
MLNV has a broad host range, infecting over 40 species within the family Poaceae, including:
Primary Hosts:
- Maize (corn)
- Sorghum
- Barley
- Oat
- Wheat
- Triticale
Alternative Hosts:
- Finger millet
- Pearl millet
- Foxtail millet
- Proso millet
- Guinea grass
- Brachiaria spp.
- Paspalum spp.
- Digitaria spp.
- Setaria spp.
- Cynodon spp.
- Pennisetum spp.
- Echinochloa spp.
- Panicum spp.
- Sporobolus spp.
- Zoysia spp.
- Eragrostis spp.
- Eleusine spp.
- Chloris spp.
- Leptochloa spp.
Other Hosts:
- Wild grasses (e.g., Johnson grass, crabgrass)
- Weeds (e.g., pigweed, lambsquarters)
- Some ornamental grasses (e.g., pampas grass)
Host Specificity:
MLNV has a wide host range within the family Poaceae, but it does exhibit some degree of host specificity. For example:
- Maize and sorghum: Highly susceptible
- Barley and wheat: Moderately susceptible
- Oat: Relatively resistant
Important Notes:
- MLNV was initially known as Maize Chlorotic Mottle Virus (MCMV). However, it was renamed to MLNV in 2012 to reflect its severe virulence.
- The primary means of MLNV transmission is through insect vectors, particularly the maize leafhopper (Cicadulina mbila).
- MLNV has a devastating impact on maize production, causing significant yield losses.
- Effective management of MLNV requires comprehensive approaches that include using resistant cultivars, managing insect vectors, and implementing cultural practices to reduce virus spread.
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