The natural host of the Alstroemeria mosaic virus is the Alstroemeria psittacina and the Alstroemeria caryophylla. The mosaic virus causes leaf chlorosis and some flower breakage. The virus attacks plants at the species level. The International Committee on Taxonomy of Viruses (ICTV) approved acronym is AIMV.
The Alstroemeria mosaic virus is related to the narcissus late season yellows, iris server mosaic, potato Y, watermelon mosaic 2, clover yellow vein and pea mosaic viruses. The viral host belong with Phylum magnoliophyta (Angiosperms) in the Kingdom Plantae and domain Eucarya.
The Alstroemeria mosaic virus is transmitted by aphids, most commonly, the Myzus persicae. It is not transmitted via seeds, pollen or between hosts. The aphid transmits the virus by picking it up from an infected plant while it feeds, then manually inoculating the uninfected plant as it feeds.
The Alstroemeria mosaic virus leaves chlorotic lesions on the leaves of the plant. Leaves might turn yellow. If the infestation is heavy, there might be breakage of the flowers. There are four other viruses, and all five of the mosaic viruses cause mosaic (mottling of the foliage). You will see patches of light and normal green on the foliage. Some of the foliage might even turn yellow. The symptoms might appear on the fruit of the plant, depending on the severity.
The Alstroemeria mosaic virus spreads in North American and Eurasia. It also occurs in the Netherlands. Though the mosaic virus affects other plants, it is found mostly on the Alstroemeria plant.
Management of the Mosaic Virus
To help prevent the virus, choose plant cultivars that are resistant to the virus. Weeds should be controlled, so as not to attract aphids, which spread the virus. Watch the plants for insects--this virus is only spread via insects. Contact your local nursery for the proper insecticide for any insects around your plants. Aphids are difficult to control--if you see one, there are more. Start treating immediately, to minimize the possible spread of the mosaic virus.