Anthracnose disease caused by the Colletotrichum gloeosporioides species complex is a major problem worldwide.In this study,we investigated the phylogenetic diversity of 207 Indian Colletotrichum isolates,associated w...Anthracnose disease caused by the Colletotrichum gloeosporioides species complex is a major problem worldwide.In this study,we investigated the phylogenetic diversity of 207 Indian Colletotrichum isolates,associated with symptomatic and asymptomatic tissues of mango,belonging to this species complex.Phylogenetic analyses were performed based on a 6-gene dataset(act,cal,chs1,gapdh,ITS and tub2),followed by ApMat sequence-analysis.The ApMat-based phylogeny was found to be superior as it provided finer resolution in most of the species-level clades.Importantly,the ApMat marker identified seven lineages within C.siamense sensu lato,including C.jasmini-sambac,C.hymenocallidis,C.melanocaulon,C.siamense sensu stricto and three undesignated,potentially novel lineages.In this study,C.fragariae sensu stricto,C.fructicola,C.jasmini-sambac,C.melanocaulon and five undesignated,potentially novel lineages were found to be associated with mango tissues.There is a need to develop a consensus among mycologists as to which genes should be used to define and delimit a Colletotrichum species and in the mean time mycologists should voluntarily restrain from describing new species based on inadequate datasets.展开更多
基金We thank Institute of Microbial Technology(CSIR-IMTECH)for the financial supportsupported by CSIR-IMTECH-OLP0071 project and CSIR-SRF fellowship awarded to GS and UGC-SRF fellowship to NK.K.D.+1 种基金yde thanks the National Research Council of Thailand for the award of grant No.54201020003a grant from the National Plan of Science and Technology,King Abdulaziz City of Science and Technology,Riyadh,Saudi Arabia,project No.10-Bio-965-02 to study Colletotrichum.
文摘Anthracnose disease caused by the Colletotrichum gloeosporioides species complex is a major problem worldwide.In this study,we investigated the phylogenetic diversity of 207 Indian Colletotrichum isolates,associated with symptomatic and asymptomatic tissues of mango,belonging to this species complex.Phylogenetic analyses were performed based on a 6-gene dataset(act,cal,chs1,gapdh,ITS and tub2),followed by ApMat sequence-analysis.The ApMat-based phylogeny was found to be superior as it provided finer resolution in most of the species-level clades.Importantly,the ApMat marker identified seven lineages within C.siamense sensu lato,including C.jasmini-sambac,C.hymenocallidis,C.melanocaulon,C.siamense sensu stricto and three undesignated,potentially novel lineages.In this study,C.fragariae sensu stricto,C.fructicola,C.jasmini-sambac,C.melanocaulon and five undesignated,potentially novel lineages were found to be associated with mango tissues.There is a need to develop a consensus among mycologists as to which genes should be used to define and delimit a Colletotrichum species and in the mean time mycologists should voluntarily restrain from describing new species based on inadequate datasets.
