Journal of Plant Diseases and Protection (2021) 128, 875-880

Enayra Silva Sousa, Gabriela de Sousa Carvalho, Beatriz Meireles Barguil, Kedma da Silva Matos and José Evando Aguiar Beserra Jr. (2021)
First report of anthracnose on Spigelia anthelmia caused by Colletotrichum karstii and Colletotrichum siamense in Brazil
Journal of Plant Diseases and Protection 128 (3), 875-880
Abstract: In Brazil, Spigelia anthelmia is an herbaceous weedy plant normally used for the treatment of helminths in humans and animals. Leaves and stems of S. anthelmia showing black spots were observed in cities in the Northeast region of Brazil. Two fungal species were isolated from symptomatic tissues. The preliminary identification of the fungal isolates was based on morphological characteristics. To confirm the identification of the isolates, the ITS region and partial sequences of the ACT and GAPDH genes were amplified and sequenced. By using morphological and phylogenetic analyses of multilocus genes, the fungi were identified as Colletotrichum karstii and Colletotrichum siamense. All isolates were pathogenic to S. anthelmia seedlings. To the best of our knowledge, this is the first report of C. karstii and C. siamense causing anthracnose on S. anthelmia in the world.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Spigelia anthelmia (weed)		Brazil (NE)
	Colletotrichum karstii		Brazil (NE)
	Colletotrichum siamense		Brazil (NE)