Abstract
Colletotrichum species form one of the most economically significant groups of pathogenic fungi and lead to significant losses in the production of major crops—in particular, fruits, vegetables, ornamental plants, shrubs, and trees. Members of the genus Colletotrichum cause anthracnose disease in many plants. Due to their considerable variation, these fungi have been widely investigated in genetic studies as model organisms. Here, we report the complete mitochondrial genome sequences of four Colletotrichum species (C. fioriniae, C. lupini, C. salicis, and C. tamarilloi). The reported circular mitogenomes range from 30,020 (C. fioriniae) to 36,554 bp (C. lupini) in size and have identical sets of genes, including 15 protein-coding genes, two ribosomal RNA genes, and 29 tRNA genes. All four mitogenomes are characterized by a rather poor repetitive sequence content with only forward repeat representatives and a low number of microsatellites. The topology of the phylogenetic tree reflects the systematic positions of the studied species, with representatives of each Colletotrichum species complex gathered in one clade. A comparative analysis reveals consistency in the gene composition and order of Colletotrichum mitogenomes, although some highly divergent regions are also identified, like the rps3 gene which appears as a source of potential diagnostic markers for all studied Colletotrichum species.
Highlights
Members of the genus Colletotrichum pose one of the greatest threats to the health of host plants around the world
C. lupini CBS 119142 was derived from Lupinus albus in Elsenburg (South Africa, 1995), C. fioriniae isolate Cf.60.014.DDPP was derived from Vaccinium corymbosum leaves (Poland, 2014), C. salicis SP17/2016 was isolated from S. vinimalis × S. schwerini shoots (Poland), and C. tamarilloi CBS 129814 (Solanum betaceum was taken from fruit anthracnose, Cundinamarca (Colombia, 2012)
Four Colletotrichum species were sequenced to produce 1,557,270 (C. lupini), 1,769,902 (C. tamarilloi), 1,918,044 (C. fioriniae), and 4,983,140 (C. salicis) raw reads with lengths ranging from 150 to 300 bp
Summary
Members of the genus Colletotrichum pose one of the greatest threats to the health of host plants around the world. Colletotrichum species are the eighth most economically significant group of pathogenic fungi in the world [1,2,3]. Most cultivated plants are susceptible to infections caused by one or more species of Colletotrichum [1,4]. These fungi cause significant losses in the production of major crops—in particular, fruits, vegetables, ornamental plants, shrubs, and trees. Members of Colletotrichum cause anthracnose, a disease that leads to the formation of dark spots on the aboveground plant parts (leaves, shoots, and pods) and causes fruit and vegetable rot [1,4,5,6,7]. Colletotrichum species cause losses in agricultural raw materials and crops stored after harvest, due to undetected latent infections that develop during storage [7,8]
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