The <I>Colletotrichum gigasporum</I> species complex

Abstract

In a preliminary analysis, 21 Colletotrichum strains with large conidia preserved in the CBS culture collection clustered with a recently described species, C. gigasporum, forming a clade distinct from other currently known Colletotrichum species complexes. Multi-locus phylogenetic analyses (ITS, ACT, TUB2, CHS-1, GAPDH) as well as each of the single-locus analyses resolved seven distinct species, one of them being C. gigasporum. Colletotrichum gigasporum and its close allies thus constitute a previously unknown species complex with shared morphological features. Five of the seven species accepted in the C. gigasporum species complex are described here as novel species, namely C. arxii, C. magnisporum, C. pseudomajus, C. radicis and C. vietnamense. A species represented by a single sterile strain, namely CBS 159.50, was not described as novel species, and is treated as Colletotrichum sp. CBS 159.50. Furthermore, C. thailandicum is reduced to synonymy with C. gigasporum.

Colletotrichum dracaenophilum causes anthracnose on Dracaena braunii in Brazil

“…This fungus is known to cause anthracnose on Dracaena sp. in Bulgaria (Farr and Rossman 2015) and China (Farr et al 2006) and on D. braunii in Bulgaria (Bobev et al 2008) and in China (Liu et al 2014).…”

Revisiting the Taxonomy of <I>Colletotrichum</I> Using Multi-Locus Gene Phylogeny

“…Morphologically, the species of this complex are characterized with the large conidial formation (> 20 ìm) (Liu et al, 2014). The distinction of species within this complex could be performed by studying any of the following four genes such as ACT, CHS-1, GAPDH, and TUB2 besides characterizing ITS region (Liu et al, 2014).…”

“…Including C. acutatum (Damm et al, 2012b), C. boninense (Damm et al, 2012a), C. caudatum (Crouch, 2014), C. destructivum , C. gloeosporioides , C. gigasporum (Liu et al, 2014), C. graminicola (Crouch and Beirn 2009;Du et al, 2005), C. orbiculare (Damm et al, 2013) and C. truncatum (Damm et al, 2009). Hence, the combined efforts of MLST (based on the analysis of ITS, GAPDH, CHS-1, ACT, HIS3, TUB2 and CAL sequences) and morphology based taxonomy has placed 190 species of Colletotrichum under eleven species complexes (Fig.…”

New Record of Anthracnose Disease of Pleomele (Dracaena reflexa Lam.) from West Bengal, India

“…Another species, Colletotrichum dracaenophilum on Dracaena sanderiana was described as new from China (Farr et al, 2006), Iran (Komaki et al, 2012) and Egypt (Morsy and Elshahawy, 2016). Antharacnose of Dracaena braunii, caused by Colletotrichum dracaenophilum was also reported from Bulgaria (Bobev et al, 2008), China (Liu et al, 2014) and Brazil (Macedo and Barreto, 2016). There were reports of four species of Colletotrichum in association with D braunii, namely, C. dracaenophilum, C. gloeosporioides, C. petchii (Farr and Rossman, 2012) and C. boninense (Farr et al, 2006).…”