The potyvirus associated with the dappled fruit of Passiflora edulis in Kagoshima prefecture, Japan is the third strain of the proposed new species East Asian Passiflora virus (EAPV) phylogenetically distinguished from strains of Passion fruit woodiness virus

Abstract

A potyvirus (isolate IB) causing dappled or faded fruits and foliar mosaic symptoms of purple passionfruit, was found in the botanical garden of Kagoshima University, Japan. This isolate--differed in host range from isolates of Passion fruit woodiness virus (PWV)-AO, previously reported to cause "woodiness" in Japan. Isolates IB and AO had 83% amino acid identity in their coat proteins (CPs). In phylogenetic analysis, East Asian isolates IB, AO, and PWV-Taiwan clustered together, and were distinguishable from Australian PWV and Brazilian Cowpea aphid-borne mosaic virus isolates, which also cause "woodiness" in passionfruit. We propose the name "East Asian Passiflora virus (EAPV)" for the new potyvirus species.

Genetic Structure and Variability of East Asian Passiflora virus Population in Amami‐O‐shima, Japan

“…2012) were directly used for subsequent experiments, because these viruses are hard to be back‐inoculated to passionfruit after single lesion passages in Phaseolus vulgaris (cvs Pinto 111 and Sujinashi Edogawa), Chenopodium amaranticolor or Chenopodium quinoa . Additionally, infection rates and virus accumulation of the EAPV samples used in this study in P. vulgaris (cvs Rico 23 and Rosinha), which have been reported as the hosts infected systemically with the EAPV Amami‐O‐shima isolate (Iwai et al. 2006a,b), were not so high.…”

“…To asses the genetic diversity of EAPV population in Amami‐O‐shima, we estimated average nt distances for each encoding region using the sequences of the eight isolates determined in this study and that of the Amami‐O‐shima isolate (Iwai et al. 2006a,b) according to the MCL method (Table 3).…”

“…2008). Previously, the emergence of EAPV has been reported only in Japan and Taiwan (Iwai et al. 2006a).…”

“…1992). In Japan, two strains of EAPV that can be differentiated biologically and genetically have been found (Iwai et al. 2006a).…”

Possible Host Adaptation as an Evolution Factor of Cowpea aphid‐borne mosaic virus Deduced by Coat Protein Gene Analysis

“…The East Asian passiflora virus (EAPV) was recognized as a woodiness‐inducing virus in Japan and Taiwan (Iwai et al. 2006a,b), and the South African passiflora virus (SAPV) that causes passion flower woodiness in Africa was identified as a strain of CABMV (McKern et al.…”