A clade of telosma mosaic virus from Thailand is undergoing geographical expansion and genetic differentiation in passionfruit of Vietnam and China

Abstract

Passionfruit (Passiflora edulis) is widely cultivated in tropical and subtropical regions around the world. Several viruses of the genus Potyvirus pose serious threat to passion fruit production. The origin, dispersal and evolution of these potyviruses, however, are poorly understood. Here, we investigated the genetic structure of telosma mosaic virus (TelMV), a potyvirus that infects passionfruit in East and Southeast Asia, after a survey of its incidence in passionfruit plants of China. The phylogeny inferred from 140 nucleotide sequences of the coat protein (CP) gene of TelMV, including 96 determined in this study, separated this virus into 4 clades. TelMV isolates from passionfruit were placed into Clade 1–3, while those from other plant species into Clade 4. Interestingly, TelMV isolates of passionfruit from Thailand were found in all the three clades of Clade 1–3, but those from China and Vietnam were found exclusively in Clade 1. Nevertheless, TelMV isolates within Clade 1 tended to cluster according to their geographical origin. Geographical populations from Thailand, Taiwan and Hainan islands of China showed significant genetic differences with one another and with those from Guangxi, Fujian, Guangdong, Yunnan and Jiangsu provinces of China. Altogether, these data suggest that several distinct TelMV clades had arisen from the passionfruit of Thailand, but only one of which was dispersed. In expanding its distribution, this clade of TelMV has undergone geography-associated evolution. Further studies on this hypothesis may shed new insights into mechanisms underlying the emergence of potyviral diseases in passionfruit plants.

Evolutionary history and global spatiotemporal pattern of alfalfa mosaic virus

“…It is reported that geographic factors and host species play contributory roles in the evolution of many RNA viruses ( Cuevas et al, 2012 ; Yu et al, 2021 ). Here, we hypothesized that deterministic events contributed to the current spatial population genetic structure, which is supported by the results of phylogeny-trait association analysis ( Table 2 ).…”

Telosma mosaic virus: An emerging plant RNA virus causing production loss in passion fruit across Asia

“…Similarly, phylogenetic analysis by Yu et al. (2021) showed that TeMV isolates from passion fruit from Thailand formed three clades and that all isolates from China and Vietnam were located in one of these branches. We also used TBtools to analyse the CP sequences of TeMV deposited in the NCBI database (https://www.ncbi.nlm.nih.gov) (Figure 3), which revealed that TeMV isolates from the same area or host tended to cluster in the same branch, thus demonstrating geographic heterogeneity.…”

“…For example, Fu et al (2021Fu et al ( , 2023 obtained several TeMV isolates from 60 passion fruit samples from Thailand and China and found that the collected isolates could be divided into two groups on a phylogenetic basis, with isolates from the same region preferentially clustering together. Similarly, phylogenetic analysis by Yu et al (2021) showed that TeMV isolates from passion fruit from Thailand formed three clades and that all isolates from China and Vietnam were located in one of these branches. We also used TBtools to analyse the CP sequences of TeMV deposited in the NCBI database (https:// www.…”

Immediate effects of passion fruit juice supplementation on working ability and attention in healthy participants

“…Passiflora edulis , also known as passion fruit, is widely planted in tropical and subtropical regions worldwide, including South America, Caribbean, south Florida, South Africa, and Asia ( He et al, 2020 ). Among the genus Passiflora , the yellow and purple passion fruits are the two common varieties with substantial economic importance in several countries, including Thailand ( Yu et al, 2021 ). Passion fruit is rich in different vitamins and minerals (such as vitamin C, A, B2, and B3, folic acid, calcium, magnesium, phosphorus, potassium, iron, and zinc), carbohydrate, and dietary fibers ( Ramaiya et al, 2019 ).…”