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1 Supplementary Material “The bean common mosaic virus lineage of potyviruses; where did it arise and when?” A.J. Gibbs, J.W.H. Trueman and M.J. Gibbs. Species of the BCMV lineage Brief notes on each of the species, together with their within- and between-species divergence values, are listed below in alphabetical order (see also Table 1): Bean common mosaic necrosis virus (BCMNV) is a seed-borne virus [38] of common bean (Phaseolus vulgaris). It was originally called the serogroup A or “black root” strain of bean common mosaic virus, but was shown to be a distinct species by gene sequencing [30]. It was first found in Europe, but is also common in North America [32], and eastern and southern Africa, where it is thought to have originated [51], although this has been questioned because some of the pathotypes of BCMNV found in Europe have not been found in Africa. The published cCP sequences of BCMNV form a tight cluster with a basal divergence of 0.018 +/- 0.015 nucleotide substitutions per site (ns/s). The closest cCP is that of Florida passionflower virus with a mean divergence of 0.496 +/- 0.015 ns/s. Bean common mosaic virus (BCMV) is common worldwide in many crop legumes, especially the common bean (Phaseolus vulgaris) [4, 5, 39, 48]. Several other potyviruses isolated from various forage and pulse legumes and originally described as separate species [36], have been shown to be so closely related to BCMV that they are now grouped as a single species [35, 57]. These include blackeye cowpea mosaic virus (BlCpMV), azuki bean mosaic (AzMV), dendrobium mosaic virus (DMV) and peanut stripe virus (PStV) [50]. All, except DMV, have been shown to be transmitted to a large proportion of the seeds of infected plants. BCMV has a very large experimental host range mostly among legumes. The main phylogenetic tree of the cCPs of the BMCVs has, excepting one clear outgroup (see below), two major sister lineages; the PStVs form one, and all the other isolates of BCMV form the other; one of the largest sublineages of BCMV are the BlCpMVs, which are found worldwide [45]. Many of the other previously separate viruses seem to have more restricted distributions. AzMV is found in azuki (Phaseolus angularis), a bean that is widely grown in Japan, and the closely related DMV was isolated in Hawaii from a plant of Dendrobium superbum (syn. anosmum), a native of tropical south east Asia. Another cluster of BCMV isolates are from guar or clusterbean (Cyamopsis tetragonoloba), probably a native of India. The other main lineage is of the isolates of PStV, a damaging pathogen of peanut (Arachis hypogaea). PStV was first found in 1984 in seed imported to the U.S.A. from China [50], but was probably isolated a decade earlier in Malaysia and Taiwan [61]. The two most internationally important crop species infected by BCMV are common beans [7, 27] and peanut [18, 46, 53]. These were first domesticated in the Americas from local wild species, and have been distributed to other parts of the world over the past five centuries. We can find no reports of BCMV being isolated from wild legumes or relatives or landraces of P. vulgaris or A. hypogaea in the Americas. The phylogenetic tree of BCMV cCP sequences suggests a clear phylogeographic link with south east Asia (see text). The main cluster of BCMV cCP sequences has a basal node of 0.171 +/0.016 ns/s and this separates all the PStV cCPs from the other BCMV cCPs. There is a distant outgroup consisting of two isolates from Vietnam, one from P. vulgaris and the other from V. 2 unguiculata [24]. These have diverged from all the other BCMVs by 0.468 +/- 0.012 ns/s, and are probably best considered to be a distinct species. Thus all three major sublineages of BCMV (BCMVs, PStV and BCMV-Vn) show consistent basal links with south and east Asia, rather than with the Americas where BCMV’s best known hosts (common bean and peanut) originated. Bituminaria bituminosa mosaic virus (BibiMV) a virus found at Coaraze near Nice, France in Bituminaria bituminosa (synonym: Psoralea bituminosa) a herbaceous legume of the Mediterranean region now grown more widely. The two published cCP sequences differ by 0.115 ns/s. They are most closely related to the cCP sequence of Florida passionflower potyvirus, from which they differ by a mean of 0.171 ns/s. Ceratobium mosaic virus (CerMV) is a Candidatus potyvirus [22] found in several orchids in glasshouse collections in Australia. It was found most often in orchids of the Ceratobium group of Dendrobium species, but also in orchids of 19 other genera [21]. CerMV has only been reported from Australia, and is probably endemic. Infected plants show chlorotic and necrotic mosaic and mottling [21, 34]. CerMV has not been transmitted experimentally. Five CerMV cCPs sequences have been reported. The basal node of the cluster has a divergence of 0.076 ns/s, ranging from 0.031 ns/s to 0.181 ns/s. Clitoria virus Y (CliVY) is another Candidatus virus known only from a gene sequence from the mottled leaves of a single plant of Clitoria ternatea collected from a building site in central Townsville, Australia. The cCP sequence recovered from this specimen is closest to those of different isolates of passionfruit woodiness virus from Queensland and Western Australia. Cowpea aphid-borne mosaic virus (CAbMV) is another of the legume-infecting potyviruses that was not clearly differentiated until molecular diagnostic techniques superceded host range and serological methods [37, 50]. The virus is seed-borne and infects a wide range of legumes and other species, but is most common in various species and cultivars of cowpea, Vigna unguiculata (catjang, cowpea), V. sinensis (common cowpea) and V. sesquipedalis (asparagus pea or yard long bean), which are ancient crops of Africa and south and east Asia [11]. Cowpeas were first taken by the Spaniards to the Americas in the 16th century [31, 46]. Although CAbMV has been reliably recorded from Africa, the Americas, Asia (south and east) and Europe, the reported CAbMV cCP sequences come only from African and South American isolates, but not all are from legumes; some came from Passiflora spp. in both regions [3, 19, 40]. The cCP sequences of African isolates are the most diverse whereas those from South America form a monophyletic cluster among the African isolates, and have a basal node divergence of 0.172 ns/s. The root of the South American CAbMV cluster is separated from the root of tree of all CAbMVs by three nodes with sister branches of ‘Old World-only’ sequences indicating that CAbMV probably originated in the Old World. The ML tree of the sequences has a single provenance change in it, whereas 1000 trees with the same provenances allocated at random have a mean of 7.4 (range 4 to 9) provenance changes/tree. Dasheen mosaic virus (DashMV) is a cosmopolitan virus of tropical aroids. It has mostly been isolated from plants of Colocasia esculenta (taro, dasheen) [9, 42], but also from those of other aroid crop species including Alocasia, Amorphophallus Typhonium and Xanthosoma [2, 41], and the ornamentals Aglaonema, Caladium, Dieffenbachia, Philodendron and Zantedeschia aethiopica [47]. Although DashMV has been reported from Europe, India, North Africa, North America and south east East, the cCPs sequences of the virus have been reported from isolates mostly from east Asia and Oceania with just two from the U.S.A. Two of the cCPs were from isolates called vanilla 3 mosaic virus (VnMV). They were from the orchid Vanilla tahitensis [17] growing in French Polynesia. VnMV although very closely related to DashMV has a different experimental host range [60 Farreyrol, 2006 #158], and its CPs have an N-terminal sequence that differs from that of DashMV CPs [17]. V. tahitensis comes from Central America and has only been distributed widely in the past few centuries, so the adaptation of DashMV isolates to it is probably recent. DashMV cCP sequences are diverse and the basal node of the cluster has a divergence of 0.366 ns/s. Interestingly one branch of the basal node of the DashMV phylogenetic tree consists of the cCPs of two isolates from China found in the Chinese medicinal aroid Pinellia ternata [49]. The other branch of the basal node leads to all the other DashMV cCPs, and the two cCPs that came from isolates collected outside the south east Asia/Oceania region are in the terminal twigs of the tree. This topology suggests that DashMV probably originated in mainland south east Asia. DashMV consistently groups with, but is distant from, another potyvirus of aroids, Zantedeschia mild mosaic virus. Dianella chlorotic mottle virus (DiCMV), a Candidatus potyvirus, known from a partial cCP sequence obtained from mottled leaves of a plant of Dianella spp. (Flax Lily; Phormiaceae) collected in Victoria, Australia. It is closest to the cCP of fritillary virus Y (see below). Diuris virus Y (DiVY) is another Candidatus potyvirus. It was found in mottled leaves of Diurus orientis, an Australian endemic herbaceous terrestrial orchid, growing in several localities in western Victoria [21]. East Asian passiflora virus (EAPV) was first isolated from hybrid passionfruit (Passiflora edulis x P. edulis f. flavicarpa) with malformed fruits from Kagoshima, Japan [28]. The cCP sequences of isolates from Taiwan and Malaysia have also been reported, but are closely related to one of the Japanese sequences, thus Japan may be the centre of diversity of this virus. The cCP sequences of EAPV have a divergence of 0.263 ns/s. Eustrephus virus Y (EustVY) is a Candidatus virus isolated from the mottled and striped leaves of Eustrephus latifolius, a shrubby monocotyledonous climber common in the understorey of the coastal woodlands of south eastern Australia. The single cCP sequence is closest to that of Sarcochilus virus Y with a divergence of 0.340 ns/s. Fritillary virus Y (FritVY) is one of the two potyviruses [16] isolated in China from Thunberg fritillary (Fritillaria thunbergii). This species is a native of China where its dried bulbs are used in traditional herbal medicine. FritVY is most closely related to Tricyrtis virus Y (divergence 0.257 ns/s). Hardenbergia mosaic virus (HarMV) is a potyvirus from Hardenbergia comptoniana, a native plant found in the south west of Western Australia (WA) [59]. The cCP sequences of 28 isolates of HarMV have been reported. They have a basal node divergence of 0.367 ns/s, and are most closely related to those of several other endemic Australian potyviruses. Hibbertia virus Y (HibVY) is another Australian Candidatus potyvirus. It was found in Hibbertia scandens, a shrubby scrambler of the coastal woodlands of south eastern Australia. The single cCP gene sequence is closest to that of siratro 1 virus Y (divergence 0.311 ns/s). Impatiens flower break potyvirus (ImpatFBV) was isolated in the USA from “several New Guinea Impatiens cultivars” showing flower break symptoms [29], thus it is uncertain whether the plants became infected in New Guinea or the USA. However the fact that its cCP sequence is 4 closest to that of Tricyrtis virus Y (divergence 0.538) and several other viruses from S E Asia suggests that this virus entered the USA in the Impatiens material. Kennedya virus Y (KVY) is another Candidatus potyvirus. It was found in plants of the leguminous scrambler Kennedya rubicunda, which is common in the coastal regions of central and southern New South Wales, Australia. Many of the plants of this species show chlorotic and necrotic mosaic and mottling. KVY was found in those showing a mild marbling mosaic, whereas those with more severe symptoms are usually infected with kenndya yellow mosaic tymovirus [12, 54]. The sequence of part of the NIb gene of KVY came from a specimen collected from a penguin colony on Bowen Island, New South Wales. Its sequence is most similar to that of the cCP of HibVY (divergence 0.100 ud/s). Passiflora foetida virus Y (PfoVY) is another Candidatus virus. It was found in a plant of Passiflora foetida growing at Ellis Beach, near Cairns, Queensland and has subsequently been found to be common around Kununurra and Broome in Western Australia (S.J. Wylie, B.A. Coutts, C. G. Webster and R.A.C. Jones, personal communication); P. foetida is a common weed of the tropics, originally from Central and South America. The sequence of the cCP of PfoVY sequence from the Queensland isolate is closest to that of zucchini yellow mosaic virus; mean cCP divergence 0.926 ns/s. Parry and colleagues [43] described Passiflora virus Y (PasVY) as a potyvirus of P. foetida from Papua, two Torres Strait islands and the Cape York Peninsula of Queensland. The three partial cCP sequences they obtained were 96-97% identical and came only from the Papuan and Torres Strait island samples, and the single recorded sequence (AY461661) from Meraulke, Papua, was only 88% identical to that of PfoVY from Queensland. Thus it is likely that PfoVY and PasVY are separate species. Passionflower potyvirus-Florida (PFV-Flor) was isolated in Florida from a passionflower (Passiflora ‘Incense’), which is a hybrid of cultivated passionflowers from Florida and South America [1]. Its cCP sequence is most closely related to that of BibiMV from France (divergence 0.171 ns/s). Passionfruit woodiness virus-Thailand (PFWV-Thai) is known from two sequences of a “potyvirus associated with woodiness symptom of purple passionfruit in Thailand” [10]. Their cCP regions differ by 0.022 ns/s. They are closest to those of Telosma mosaic virus (divergence 0.235 ns/s), Tricyrtis virus Y (0.614 ns/s) and fritillary virus Y (0.689 ns/s); all found in the same region. Passionfruit woodiness viruses –Australia. There are two groups of BCMV lineage viruses that cause passionfruit woodiness disease in Australia. The cCP sequences of four isolates from Western Australia and one from Queensland form one cluster (PFWV-WA/Q) and have a mean basal divergence of 0.059 ns/s, and three from NSW (PFWV-NSW) form the other cluster and have a mean basal divergence of 0.046 ns/s. These two groups of sequences are distinct and differ from one another by a mean of 0.440 ns/s. Both clusters are most closely related to three Candidatus potyviruses found in eastern Australia, HibVY, siratro 1 virus Y and siratro 2 virus Y. Several viruses of the BCMV lineage have been reported from species of the Passifloraceae in different parts of the world. These include not only fruit-producing passionfruits, especially Passiflora edulis but also ornamental passionflowers (see PFV-Flor above) and weed passifloras (see PfoVY above). Those infecting P. edulis have been reported from Brazil [40], Japan [28], New South Wales (Australia) [55], Papua [43], Queensland (Australia) [13, 43], South Africa [3], and Western Australia [59]. Those found in Brazil were identified as isolates of CAbMV. It seems that Passiflora spp., which originated in central and southern America, but have only been 5 distributed from there throughout the world over the past two centuries [31, 46] are particularly susceptible to viruses of the BCMV lineage Sarcochilus virus Y (SarVY) is a Candidatus virus found in mottled plants of a lithophytic orchid of the genus Sarcochilus in an Australian orchid collection [21]. It is not known whether SarVY came from the wild in Australia however Sarcochilus is a genus of Australian orchids, and the cCP sequence of SarVY is closest to that of EusVY (divergence 0.340 ns/s), which has only been found in the wild in Australia, thus we believe that SarVY is probably Australian . Siratro 1 virus Y (Sir1VY) and Siratro 2 virus Y (Sir2VY) are Candidatus viruses isolated from plants of weed siratros (Macroptilium atropurpureum) with mosaic symptoms, and growing on waste ground in Townsville, Queensland, Australia. The two cCP sequences differ from one another by 0.438 ns/s; Sir1VY is closest to PFWV-WA/Q (mean divergence 0.419 ns/s), and Sir2VY is closest to PFWV-NSW (mean divergence 0.301 ns/s). Soybean mosaic virus (SbMV) is a seed-borne virus of soybean that is also found in other legumes and experimentally infects more than 50 plant species in more than 25 genera of 4 families [50]. It is found wherever soybean is grown. Soybean, Glycine max, is an ancient crop domesticated in north-east China from the wild species Glycine soja [15]. The earliest record of human use of soybean is 2838 BC, but it did not appear in Europe until the 18th century and was not taken to the USA until 1804 [31, 46]. A distinct ‘strain’ of SbMV, (SbMV-Pin) has been isolated only in China from cultivated and wild Pinellia ternata [8], an aroid used in traditional Chinese medicine. SbMV-Pin has a P1 gene sequence that is more closely related to that of dasheen mosaic virus than SbMV [8], and so SbMV-Pin is probably a distinct, but recombinant, species. SbMV is also closely related to watermelon mosaic virus (WMV); the three viruses, SbMV, SbMV-Pin and WMV, are similar distances from one another; SbMV and SbMV-Pin cCP sequences have diverged only slightly less than SbMV and WMV; 0.334 ns/s versus 0.362 ns/s. The SbMV cCP cluster has a basal divergence of only 0.156 ns/s sequences. Many of the sequences come from east Asia, especially China [9] and Japan, and the variability of the species is shown more clearly by the P1 and HC/Pro sequences than cCP sequences [14], but there is no clear basal phylogeographic separation between isolates from Japan and China; many Genbank SbMV entries are incomplete and do not include provenance information. SbMV-Pin is slightly less variable than SbMV (basal divergence 0.120 ns/s) Telosma mosaic virus (TelMV) is a virus of Telosma cordata, the Pakalana Vine (family Asclepiadaceae), from south and east Asia where it is grown for its fragrant flowers. The cCP sequence came from an isolate from Vietnam, and is most closely related to the cCP sequences of PWV-Thai (mean divergence 0.235 ns/s). Tricyrtis virus Y (TriVY) is a potyvirus isolated in the USA from Tricyrtis formosana var. stolonifera [29], the toad lily, which is propagated vegetatively and is a native of Taiwan. Its cCP sequence is most closely related to that of FritVY (divergence 0.257 ns/s) isolated in China from Thunberg fritillary, which is also a native of China. This suggests that TriVY may have been carried to the USA in infected planting material. Watermelon mosaic virus (WMV), was formerly known as watermelon mosaic virus 2, and is one of the most cosmopolitan potyviruses of cucurbit crops [4], but has also been isolated from orchids [20, 58]. It infects both Old World and New World cucurbits (see zucchini yellow mosaic virus, below). Watermelon (Citrullus lanatus) was domesticated in tropical/sub-tropical Africa, was 6 cultivated in Egypt in the 4th Dynasty, and was subsequently grown around the Mediterranean and in India, but did not reach China until the 10th century [6, 46] The cCP sequences of around 50 WMV isolates from different parts of the world population are closely similar (basal divergence 0.09 ns/n), and, as a species, WMV is most closely related to the two SbMV species. WMV has phylogeographic links with east Asia; the two most basal nodes of its phylogenetic tree have branches that are of isolates only from China, Japan and Korea. Wisteria vein mosaic virus (WVMV) is a virus of the Chinese wisteria, Wisteria sinensis. Two isolates of this virus have been reported, one from Beijing [33] and the other from a plant in New Zealand that originated from Australia. Their cCPs have a divergence of 0.214 ns/s, and are closest to those of WMV and the SbMVs. Zantedeschia mild mosaic virus (ZantMMV) is a virus from Zantedeschia spp., Calla Lily (Araceae), which is a genus of plants endemic to South Africa. Four cCP sequences of this virus have been reported, two isolates from Taiwan [26] and the others from New Zealand in Vallota speciosa, an amaryllid also from South Africa. The basal divergence of the cluster is 0.174 ns/s, and it is consistently closest to DashMV, another potyvirus of aroids, with a mean interspecies divergence of 1.185 ns/s. Zucchini yellow mosaic virus (ZYMV) is another cosmopolitan virus widespread in cucurbit crops. It has been shown to be seed-borne [56], and this is the most likely reason that it is so widely dispersed. It has been isolated from important Old World crop cucurbits such as Benincasa hispida (wax gourd), Citrullus lanatus (watermelon), Cucumis melo (melon), Cucumis sativus (cucumber), Lagenaria siceraria (calabash gourd), Luffa spp. (loofah), Momordica charantia (bitter gourd), and also those that originated in the New World, namely the Cucurbita spp. that produce marrows, pumpkins, squash and zucchini. The cluster of the cCP sequences of ZYMV has a basal node divergence of 0.174 ns/s and their phylogeny is closely similar to that reported for the intact CP gene sequences [52]. Many of the isolates come from east Asia [62], and most of these are in the nodes most directly connected to the outgroup potyviruses; one branch of the basal node of the tree is of 13 isolates from China and Vietnam with one tip isolate from Europe, the next node has a branch of three isolates from Singapore, Reunion Is and Vietnam, whereas half of the remaining isolates were from non-Asian crops. Simmons et al [52] reported that ZYMV is diverging at the rate of 1.5 x 10-4 nucleotide substitutions per site per year, which is four times the average evolutionary rate calculated from a large sample of potyvirus species [23]. This may be a real difference, however it may also reflect the fact that the ZYMV estimate was based on contemporaneous samples taken over only 22 years, which may have been influenced by a founder effect [25, 44], nonetheless the two rate estimates gave similar estimates of the date of primary radiation of ZYMV; 800 years [52] and 1016 years [23]. List 1 Accession Codes of the cCP sequences of the ‘outgroup potyviruses’: Bean common mosaic AJ312437, Bean common necrotic mosaic AY138897, Bean yellow mosaic D28819, Beet mosaic AY206394, Chilli veinal mottle AJ237843, Clover yellow vein AB011819, Cocksfoot streak AF499738, Cowpea aphid-borne mosaic AF348210, Daphne Y DQ299908, Dasheen mosaic AJ298033, East Asian Passiflora AB246773, Fritillary Y AM039800, Japanese yam mosaic AB027007, Johnsongrass mosaic Z26920, Konjak mosaic AB219545, Leek yellow stripe AJ307057, Lettuce mosaic X97705, Lily mottle AJ564636, Maize dwarf mosaic AJ001691, Narcissus yellow stripe AJ311372, Onion yellow dwarf AJ510223, Papaya leaf 7 distortion mosaic AB088221, Papaya ringspot X67673, Pea seed-borne mosaic D10930, Peanut mottle AF023848, Peanut stripe U05771, Pennisetum mosaic AY642590, Pepper mottle M96425, Peru tomato mosaic AJ437280, Plum pox D13751, Potato A Z21670, Potato V AJ243766, Potato Y X12456, Scallion mosaic AJ316084, Shallot yellow stripe AJ865076, Soybean mosaic D00507, Sugarcane mosaic AJ297628, Sweet potato feathery mottle D86371, Thunberg fritillary AJ851866, Tobacco etch M15239, Tobacco vein mottling X04083, Turnip mosaic AF169561, Watermelon mosaic AY437609, Wild potato mosaic AJ437279, Wisteria vein mosaic AY656816, Yam mosaic U42596, Zucchini yellow mosaic AF127929. List 2 Accession Codes of 411 potyvirus sequences – BCMV lineage potyviruses and outgroup potyviruses: AB001994, AB004640, AB004641, AB011819, AB012663, AB027007, AB063251, AB085900, AB088221, AB100443, AB100444, AB100445, AB100446, AB100447, AB100448, AB127936, AB181492, AB181493, AB185021, AB188115, AB188116, AB206827, AB206829, AB206831, AB206832, AB206833, AB206834, AB218280, AB219545, AB246773, AB353119, AB369278, AB369279, AF014811, AF022442, AF022443, AF022444, AF022445, AF022446, AF023848, AF045065, AF045066, AF048981, AF062518, AF063222, AF073380, AF083558, AF083559, AF127929, AF127930, AF127931, AF127932, AF127933, AF127934, AF169561, AF169832, AF185957, AF191748, AF200537, AF200540, AF200543, AF200546, AF200549, AF200552, AF200554, AF200557, AF200560, AF200566, AF200572, AF200575, AF200578, AF200581, AF200584, AF203527, AF208662, AF228515, AF228516, AF241233, AF241739, AF242844, AF242845, AF322376, AF361336, AF361337, AF368424, AF395678, AF435425, AF469171, AF484549, AF486822, AF486823, AF499738, AF511485, AF513550, AF513551, AF513552, AJ001691, AJ132143, AJ132146, AJ132147, AJ132149, AJ132156, AJ132157, AJ132414, AJ237843, AJ243766, AJ251527, AJ293276, AJ293277, AJ297628, AJ298033, AJ298034, AJ298035, AJ298036, AJ307036, AJ307057, AJ310200, AJ311372, AJ312437, AJ312438, AJ316084, AJ316227, AJ316228, AJ316229, AJ420018, AJ420019, AJ420020, AJ429071, AJ430527, AJ437279, AJ437280, AJ459954, AJ459955, AJ459956, AJ507388, AJ510223, AJ511347, AJ515907, AJ515908, AJ515911, AJ564636, AJ579481, AJ579482, AJ579487, AJ579488, AJ579489, AJ579491, AJ579492, AJ579493, AJ579494, AJ579495, AJ579496, AJ579497, AJ579498, AJ579499, AJ579500, AJ579501, AJ579502, AJ579503, AJ579504, AJ579505, AJ579509, AJ579511, AJ579512, AJ579514, AJ579515, AJ579516, AJ579517, AJ579518, AJ579519, AJ579520, AJ579521, AJ579522, AJ579523, AJ579524, AJ609298, AJ616719, AJ616720, AJ619757, AJ628750, AJ628751, AJ628752, AJ628753, AJ628755, AJ628756, AJ851866, AJ865076, AJ889243, AJ889244, AJ889245, AM039800, AM258976, AM409187, AM409188, AM422386, AY074808, AY074809, AY074810, AY112735, AY188994, AY206394, AY216010, AY216479, AY216481, AY216483, AY216485, AY216487, AY216489, AY216987, AY253906, AY253908, AY253911, AY278998, AY279000, AY282577, AY294045, AY433950, AY433951, AY433952, AY434454, AY437609, AY464948, AY505342, AY518550, AY597207, AY611021, AY611022, AY611023, AY611024, AY611025, AY611026, AY626825, AY642590, AY656816, AY799852, AY863025, AY864314, AY864850, AY864851, AY968604, AY994104, AY994105, AY995215, AY995216, D00535, D00692, D10053, D10930, D13751, D13913, D13914, D86371, D88615, D88616, DQ054366, DQ098900, DQ098901, DQ098904, DQ112219, DQ299908, DQ360817, DQ360818, DQ360819, DQ360820, DQ360821, DQ360822, DQ360823, DQ367846, DQ397527, DQ397528, DQ397530, DQ397531, DQ397532, DQ399708, DQ407934, DQ517427, DQ517428, DQ517430, DQ517431, DQ517432, DQ645729, DQ666332, DQ851493, DQ860147, DQ897639, DQ898188, DQ898189, DQ898191, DQ898192, DQ898193, DQ898194, DQ898195, DQ898196, DQ898197, DQ898198, DQ898199, DQ898200, DQ898201, DQ898202, DQ898203, DQ898204, DQ898205, DQ898206, DQ898207, DQ898208, DQ898209, 8 DQ898210, DQ898211, DQ898212, DQ898213, DQ898215, DQ898216, DQ898217, DQ898218, DQ925417, DQ925418, DQ925419, DQ925420, DQ925421, DQ925422, DQ925423, DQ925424, DQ925425, DQ925447, DQ925448, DQ925449, DQ925450, DQ925451, DQ925464, DQ925465, DQ925466, EF062583, EF127832, EF199550, EF375606, EF375607, EF375608, EF547367, EU004070, EU035271, EU334546, EU334547, EU371645, EU371648, EU420058, EU492546, EU532065, EU561043, EU561044, EU561045, L11890, L15332, L19472, L19473, L19474, L19539, L21767, L22907, L29569, L31350, M15239, M35095, M96425, S42280, S66251, S66252, S66253, S66274, U00122, U05771, U08124, U19287, U20818, U23564, U25673, U34972, U37072, U37073, U37074, U37075, U37076, U42596, U60100, U67149, U67150, U67151, U72204, U90326, X04083, X12456, X63559, X63771, X67673, X82873, X96665, X97705, Y11771, Y11772, Y11773, Y11774, Y11775, Y11776, Y17822, Y17823, Y17824, Z15057, Z17203, Z21670, Z21700, Z26920. List 3 Accession Codes of 85 representative BCMV lineage and outgroup potyvirus sequences; AB011819, AB027007, AB088221, AB181492, AB185021, AB219545, AB353119, AF022444, AF022445, AF023848, AF063222, AF169561, AF185957, AF200578, AF203527, AF208662, AF228515, AF228516, AF322376, AF484549, AF499738, AF511485, AF513552, AJ001691, AJ132414, AJ237843, AJ243766, AJ297628, AJ307057, AJ311372, AJ316084, AJ430527, AJ437279, AJ437280, AJ459956, AJ510223, AJ564636, AJ628753, AJ851866, AJ865076, AM039800, AM409187, AM409188, AY206394, AY505342, AY626825, AY642590, AY656816, AY864314, AY864850, AY864851, D10930, D13751, D28819, D86371, DQ098900, DQ098901, DQ098904, DQ112219, DQ299908, DQ360823, DQ851493, DQ860147, DQ898189, DQ898203, DQ898215, DQ925422, DQ925425, EU334546, EU334547, EU420058, EU532065, L19539, M15239, M96425, U37076, U42596, U67150, U67151, X04083, X12456, X67673, X97705, Z21670, Z26920. References for Supplementary Material 1. 2. 3. 4. 5. 6. 7. 8. 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