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Acquisition and Retention of Potato virus Y Helper Component in the Transmission of Potato aucuba mosaic virus by Aphids
Author(s) -
Manoussopoulos I. N.
Publication year - 2001
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1046/j.1439-0434.2001.00580.x
Subject(s) - potato virus y , potyvirus , biology , aphid , virology , mosaic virus , transmission (telecommunications) , myzus persicae , infectivity , virus , plant virus , horticulture , electrical engineering , engineering
Potato aucuba mosaic virus (PAMV) is transmissible by aphids in a non‐persistent manner but only in the presence of a Potyvirus helper component (HC) such as that of Potato virus Y (PVY) that must be acquired beforehand or simultaneously. To compare the acquisition and persistence of PAMV and PVY‐HC, the PVY‐HC was acquired first and then PAMV. The acquisition access and post‐acquisition fasting periods were varied. The results show that PAMV and PVY particles, and also PVY‐HC could be acquired in 10 s. Some PVY‐HC activity could be detected in fasting aphids at least 6 h after acquisition whereas PAMV infectivity was retained for only 2 h. These findings are compatible with the non‐persistent transmission concept being controlled by enzymatic release of PAMV particles bound to aphid mouthparts by PVY‐HC.