Colletotrichum: complex species or species ... - CBS - KNAW

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Weir et al.Fig. 18. Glomerella cingulata “f. sp. camelliae”. A, C, D. ICMP 10643. B, E. ICMP 10646. A–B. Appressoria. C. Conidiogenous cells. D–E. Conidia. Scale bar A = 20 µm. Scalebar of A applies to A–E.aotearoa (ICMP 18748) was isolated from Ligustrum lucidum inNew Zealand, but it was not associated with a stem lesion and noC. aotearoa isolates were observed forming perithecia.Glomerella cingulata var. brevispora Wollenw., Z.Parasitenk. (Berlin) 14: 260. 1949.Notes: Described from fruit rots from Germany, this name has notbeen used since. No cultures are available and its relationship toand within the C. gloeosporioides complex is not known.* Glomerella cingulata “f. sp. camelliae” (Dickens & Cook1989). Figs 18, 19.Notes: Dickens & Cook (1989) proposed the name Glomerellacingulata “f. sp. camelliae” for isolates morphologically typical ofC. gloeosporioides s. lat. that were highly pathogenic to leaves andshoots of ornamental Camellia saluenensis hybrids, causing thedisease Camellia twig blight. These authors reported the fungusfrom plants imported into the UK from New Zealand and noted thata similar disease had been reported from plants grown in the UK,146
The Colletotrichum gloeosporioides species complexFig. 19. Glomerella cingulata “f. sp. camelliae”. A. ICMP 18542. B. ICMP 10643. C. ICMP 10646. A–C. Cultures on PDA, 10 d growth from single conidia, from above and below.USA, Australia, France, and Italy. The disease has been reportedfrom Camellia japonica, C. reticulata, and C. sasanqua. Althoughisolated in the UK from plants imported from New Zealand, thispathogen has not yet been found on Camellia plants growing inNew Zealand.We have sequenced authentic isolates cited by Dickens &Cook (1989) as well as isolates pathogenic to Camellia saluenensiscollected from the USA. They are similar to each other geneticallyas well as biologically and morphologically. ITS sequences alonedistinguish G. cingulata “f. sp. camelliae” from all other taxa in theC. gloeosporioides complex, and there is good genetic evidence toconsider these isolates to be representative of a distinct specieswithin the C. kahawae clade. A new species is not proposed herebecause the relationship between the G. cingulata “f. sp. camelliae”isolates and C. camelliae, the fungus causing brown blight of tea,remains uncertain.Dickens & Cook (1989) also reported two C. acutatum strainsfrom ornamental Camellia species that were avirulent in testswith detached Camellia cv. Donation leaves. Strain IMI 351261,deposited 1992 in IMI by R. Cook, is likely to be one of them. Thisstrain was confirmed as belonging to the C. acutatum speciescomplex and identified as C. lupini, which causes lupin anthracnoseand is occasionally found on other hosts (Damm et al. 2012a, thisissue). Another strain from Camellia reticulata from China belongsto C. fioriniae, also a species in the C. acutatum complex, whilea strain from New Zealand (ICMP 10338) is C. boninense s. str.(Damm et al. 2012a, b, this issue).See notes under C. camelliae.Specimens examined: UK, plants imported from New Zealand, on Camellia ×williamsii, coll. Dickens & Cook 82/437, 1982 (authentic culture of Glomerellacingulata “f. sp. camelliae” – ICMP 10643; dried culture PDD 56488). USA,Mississippi, on Camellia sasanqua twig blight, coll. W.E. Copes CG02g, May 2002(ICMP 18542); South Carolina, on Camellia sp., coll. G. Laundon 20369, 1 Jan.1982 (ICMP 10646).Glomerella cingulata var. crassispora Wollenw., Z.Parasitenk. (Berlin) 14: 260. 1949.Notes: Described from Coffea arabica from a glasshouse inGermany, this name has not been used since. No cultures areavailable and its relationship to and within the C. gloeosporioidescomplex is not known.Glomerella cingulata “f. sp. manihotis” (Chevaugeon1956)Notes: See notes under Colletotrichum manihotis.Glomerella cingulata var. minor Wollenw., Z. Parasitenk.(Berlin) 14: 261. 1949.= Gloeosporium elasticae Cooke & Massee, Grevillea 18: 74. 1890. [fideWollenweber & Hochapfel 1949]Notes: Placed here in synonymy with C. fructicola.Glomerella cingulata var. minor was described from Ficus fromGermany, but Wollenweber & Hochapfel (1949) noted that thesame fungus occurred also on other hosts in Europe, Africa, andAmerica, including Malus and Coffea. Genetically the ex-holotypeculture of G. cingulata var. minor (CBS 238.49) matches the typespecimen of C. fructicola, although the culture itself appears to bestale, with slow growth and an irregularly scalloped margin (seewww.studiesinmycology.org147
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Studies in Mycology 73 (September 2
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Colletotrichum: complex species or
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Damm et al.Table 1. Strains of Coll
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available online at www.studiesinmy
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The Colletotrichum acutatum species
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Damm et al.Fig. 25. Colletotrichum
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Cannon et al.110.74 C. cuscutae IMI
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Studies in MycologyStudies in Mycol
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CBS Biodiversity SeriesNo. 11:Taxon
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Studies in Mycology (ISSN 0166-0616
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