Leaf curl of celery, caused by Colletotrichum acutatum sensu lato, has been reported in the United States. A multilocus phylogenetic analysis with three genes was conducted with a collection of isolates from celery (n = 23) and noncelery (n = 29) hosts to evaluate their taxonomic position within C. acutatum sensu lato. The three DNA regions used for phylogenetic analysis included the introns of the glutamine synthase GS and glyceraldehyde-3-phosphate dehydrogenase GPDH genes, and the partial sequence of the histone3 his3 gene. Moreover, celery and noncelery isolates were evaluated for vegetative compatibility and pathogenicity on celery. Culture filtrates from celery and noncelery isolates were also evaluated for their ability to reproduce leaf curl symptoms. A total of 23 celery isolates were evaluated based on phylogenetic analysis, which showed that all celery isolates were closely related and belonged to the newly described species C. fioriniae. The celery isolates were grouped into six vegetative compatibility groups, indicating that the population was not clonal. Isolates of C. fioriniae from celery (22 of 23) and other hosts (26 of 29) caused leaf curl symptoms. Isolates of C. acutatum, C. nymphaeae, and C. godetiae were pathogenic but did not cause leaf curl symptoms. Isolates of C. lupini, C. johnstonii, and C. gloeosporioides were not pathogenic on celery. In addition, cell-free fungal culture filtrates caused leaf curl symptoms on celery, indicating that certain isolates produce a metabolite that can cause leaf curl symptoms on celery, possibly indole acetic acid.

在美国已经报道了由番茄炭疽菌引起的芹菜叶卷曲。用三种基因甲多位系统发育分析用分离株从芹菜集合（进行Ñ = 23）和noncelery（Ñ = 29）主机内评估其分类学位置C. acutatum意义上拉托。用于系统发育分析的三个DNA区域包括谷氨酰胺合酶GS和甘油三磷酸脱氢酶GPDH基因的内含子，以及组蛋白3 his3的部分序列。基因。此外，对芹菜和非芹菜分离株的营养相容性和对芹菜的致病性进行了评估。还评估了来自芹菜和非芹菜分离株的培养物滤液重现叶片卷曲症状的能力。根据系统进化分析，共评估了23种芹菜分离株，表明所有芹菜分离株密切相关，属于新近描述的C. fioriniae物种。芹菜分离株分为六个营养相容性组，表明该种群不是克隆的。芹菜（23个中的22个）和其他宿主（29个中的26个）的丝状衣原体的分离物引起了叶子卷曲的症状。分离株C. acutatum，C. nymphaeae和C. godetiae有致病性，但没有引起叶片卷曲的症状。分离株C.羽扇豆根瘤菌，C. johnstonii和炭疽菌没有对芹菜致病。此外，无细胞的真菌培养滤液会引起芹菜叶片卷曲的症状，表明某些分离物产生的代谢产物会导致芹菜叶片卷曲的症状，可能是吲哚乙酸。