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

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Weir et al.Fig. 13. Colletotrichum alienum. A, E, F. ICMP 12071 – ex-holotype culture. B. ICMP 18703. C–D. ICMP 12068. G–I. ICMP 18691 (ex DAR 37820). A–B. Appressoria. C–D. Asciand ascospores. E. Conidia. F. Conidiogenous cells. G. Appressoria. H. Conidia. I. Conidiogenous cells. Scale bar D = 20 µm. Scale bar of D applies to A–I.140
The Colletotrichum gloeosporioides species complexFig. 14. Colletotrichum alienum. A. ICMP 12071 – ex-holotype culture. B. ICMP 12068. C. ICMP 18691 (ex DAR 37820). A–C. Cultures on PDA, 10 days growth from singleconidia, from above and below.variable in shape, simple to broadly lobed, sometimes in groups,sometimes intercalary, about 7–17 × 4–9.5 µm. Perithecia not seenin culture.Geographic distribution and host range: Confirmed only from NewZealand, but GenBank records suggest C. aotearoa also occurs inChina (see below). In New Zealand this species is common on ataxonomically diverse set of native plants, as both a fruit rot and aleaf endophyte, and has also been isolated from leaves of severalspecies of naturalised weeds.Genetic identification: ITS sequences do not separate C. aotearoafrom several taxa in the Kahawae and Musae clades. This speciescan be distinguished using several other genes, including TUB2,CAL, GS, and GAPDH.Notes: All isolates in the C. gloeosporioides complex from NewZealand native plants studied here belong in the Kahawaeclade, and most of these are C. aotearoa; a small number of leafendophyte isolates from New Zealand native trees are C. kahawaesubsp. ciggaro. The C. aotearoa isolates have been isolated asendophytes from symptomless leaves as well as from rotting fruitfrom native trees. Morphologically indistinguishable from isolatesof C. kahawae subsp. ciggaro, this species is distinguishedgenetically with all genes sampled, except ITS. The GAPDH genetree splits C. aotearoa into two well supported clades, but these donot correlate to any other features, either geographic or biological.Isolates associated with distinctive and common leaf spots onMeryta sinclairii, first recorded by Beever (1984), belong in thisspecies. Whether isolates of C. aotearoa from other hosts are ableto cause the same disease on Meryta is not known.Also in C. aotearoa are a range of isolates from weeds thathave become naturalised in New Zealand. We assume that C.aotearoa is a New Zealand native species. It has a broad hostrange amongst native plants and has apparently jumped host tosome weeds. It has never been found associated with cultivatedplants or as a rot of cultivated fruit.Colletotrichum aotearoa may also occur in China. ITSsequences from isolates from Boehmeria from China (GenBankrecords GQ120479 and GQ120480) from Wang et al. (2010)match exactly a set of C. aotearoa isolates. ITS between-speciesdifferences within the C. gloeosporioides complex are very small,so this match needs confirming with additional genes. C. aotearoawas referred to as Undescribed Group 2 by Silva et al. (2012b).Other specimens examined: New Zealand, Auckland, Freemans Bay, on Vitexlucens fruit, coll. P.R. Johnston C1252.1, 26 Aug. 2007 (ICMP 18532; PDD 92930).on Berberis sp. leaf spot, coll. N. Waipara C69 (ICMP 18734); Auckland, Mangere,on Berberis glaucocarpa leaf spot, coll. N. Waipara C7, Jun. 2007 (ICMP 18528);Auckland, Waitakere Ranges, on Kunzea ericoides leaf endophyte, coll. S. Joshee7Kun3.5, Jan. 2004 (ICMP 17324); Auckland, Waitakere Ranges, on Prumnopitysferruginea leaf endophyte, coll. S. Joshee 8Mb5.1, Jan. 2004 (ICMP 18533); Auckland,Waitakere Ranges, on Dacrycarpus dacrydioides leaf endophyte, coll. S. Joshee5K5.9, Jan. 2004 (ICMP 18535); Auckland, St Johns, Auckland University campus,on Coprosma sp. incubated berries, coll. B. Weir C1282.1, 30 Apr. 2009 (ICMP18577); Auckland, Mt Albert, on Acmena smithii lesions fruit, coll. P.R. Johnston C847,9 Sep. 1987 (ICMP 18529); Auckland, Glen Innes, Auckland University campus, onCoprosma sp. incubated berries, coll. B. Weir C1282.3, 30 Apr. 2009 (ICMP 18536);Auckland, Orakei, on Ligustrum lucidum leaf spot, coll. C. Winks & D. Than M136.3(ICMP 18748); Auckland, Waitakere Ranges, on Podocarpus totara leaf endophyte,coll. S. Joshee 3T5.6, Jan. 2004 (ICMP 17326); Auckland, Waitakere Ranges, Huia,on Geniostoma ligustrifolium leaf endophyte, coll. S. Bellgard M128, 8 Jul. 2010 (ICMP18540); Auckland, Waitakere Ranges, Huia, on Coprosma sp. rotten berry, coll. S.Bellgard M130-2, 8 Jul. 2010 (ICMP 18541); Auckland, Waiheke Island, Palm Beach,on Meryta sinclairii leaf spot, coll. P.R. Johnston C1310.1, 21 Mar. 2010 (PDD 99186;ICMP 18742); Auckland, Tiritiri Island, on Dysoxylum spectabile fruit rot, coll. P.R.www.studiesinmycology.org141
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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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Damm et al.Table 1. (Continued).Gen
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Damm et al.combined sequence datase
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Damm et al.Fig. 2. Colletotrichum a
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The Colletotrichum boninense specie
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available online at www.studiesinmy
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The Colletotrichum acutatum species
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Damm et al.Table 2. Conidia measure
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Cannon et al.Table 3. Authentic seq
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Cannon et al.110.74 C. cuscutae IMI
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Cannon et al.Boninense cladeThe bon
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Cannon et al.C. lindemuthianum AB08
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Cannon et al.Hawksworth DL (2011).
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Cannon et al.Rodríguez-Guerra R, R
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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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