Abbreviations : Report Help
Macluraviruses resemble members of the genus Potyvirus in their transmission by aphids but virions are slightly shorter. They form a distinct group in phylogenetic analyses and have different polyprotein consensus cleavage sites.
Virions are flexuous filaments mostly 650–675 nm×13–16 nm.
Virion Sedimentation coefficient S20,w is 155–158S; density in CsCl is 1.31–1.33 g cm−3.
Virions contain one molecule of linear positive-sense, ssRNA of about 8.0 kb.
Macluraviruses have a single coat (capsid) protein (CP) species of 33–34 kDa.
The complete genome sequences of four different macluraviruses are available. The aa sequences of macluravirus CPs show limited (14–23%) identity with CP sequences of some aphid-transmitted potyviruses. Macluraviruses show significant aa sequence identity in portions of the replicase protein with viruses in other genera of the family Potyviridae. The macluraviruses seem to have a genome organization and replication strategy typical of viruses in the family Potyviridae (Figure 2.Potyviridae).
Current information suggests that most viruses have a narrow host range, infecting species in up to nine host families.
The viruses are transmitted by aphids in a non-persistent manner and experimentally by mechanical inoculation.
Moderately immunogenic. No serological relationships to members of the genus Potyvirus have been found except for a weak reaction between maclura mosaic virus and bean yellow mosaic virus.
Macluravirus: from the genus name of the host (Maclura) of members of the type species Maclura mosaic virus.
See discussion under family description.
Large cardamom chirke virus
Support for preparation of the Online Report and Report Summaries has been provided by: