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Resolving the Colletotrichum siamense species complex using ApMat marker
Ist Teil von
Fungal diversity, 2015-03, Vol.71 (1), p.247-264
Ort / Verlag
Dordrecht: Springer Netherlands
Erscheinungsjahr
2015
Link zum Volltext
Quelle
SpringerLink (Online service)
Beschreibungen/Notizen
Colletotrichum gloeosporioides sensu lato
has been associated with anthracnose in diverse commercial crops. It is now established that
C. gloeosporioides sensu lato
comprises 33 phylogenetic species and
C. gloeosporioides sensu stricto
is not a common pathogen of tropical fruits. In this study, we investigated the phylogenetic relationships of 85
Colletotrichum
isolates associated with select tropical fruits and flowering plants from India. In the
ApMat
marker analysis, the 85 isolates clustered with 7 known
Colletotrichum
species (
C. aotearoa
,
C. dianesei
,
C. endomangiferae
,
C. musae
,
C. siamense
,
C. theobromicola, Glomerella cingulata
f. sp.
camelliae
) and six novel lineages. One of the novel lineages is described and illustrated in this paper as
Colletotrichum communis sp. nov.
, while new-host pathogen associations for
C. aotearoa
,
C. endomangiferae
,
C. dianesei
and
C. theobromicola
are reported from India. Out of the 85 isolates analysed in this paper, 73 isolates clustered within the
C. siamense
species complex, indicating that
C. siamense
species complex, not
C. gloeosporioides sensu stricto
, is common on tropical fruits. In comparison with
act
,
cal
,
gapdh
, ITS and
tub2
gene markers, we recommend the use of the
ApMat
marker for accurate identification of cryptic species within the
C. siamense
species complex. We believe that the
ApMat
marker, in combination with one or two similar ‘phylogenetically superior’ gene markers, is a better candidate for species-level classification of fungi that were traditionally identified as ‘
Colletotrichum gloeosporioides
’.