@ARTICLE{TreeBASE2Ref30798, author = {Mira Vojvodic and Brankica Tanovic and Petar Mitrovic and Ivana Vico and Aleksandra Bulajic}, title = {Waitea circinata var. zeae causing root rot of cabbage and oilseed rape }, year = {2020}, keywords = {Rhizoctonia ? like fungi, Brassicaceae, morphology, phylogeny}, doi = {}, url = {http://}, pmid = {}, journal = {Plant Disease}, volume = {}, number = {}, pages = {}, abstract = {Cabbage, a widely used and popular vegetable and oilseed rape, the second most valuable oilseed crop in the world, are two very important species from the Brassicaceae family. During 2017 two geographically separated outbreaks of cabbage and oilseed rape root rot with estimated incidence of 15% and 20%, respectively, were recorded in the Vojvodina region, Serbia. From symptomatic cabbage and oilseed rape plants 12 hyphal-tip isolates were identified as Waitea circinata var. zeae based on morphological and molecular features. This finding shows that W. circinata var. zeae has expanded its host range to the Brassicaceae family. Sequence analyses of ITS and LSU of the rDNA, RPB2 and β-tubulin gene revealed the highest similarity with multiple W. circinata var. zeae. Neighbor-joining analyses of ITS sequences, resulted in the phylogenetic tree with one well defined branch of W. circinata var. zeae, with two separate groups. Group I comprised all 12 Serbian isolates and the majority of isolates originating from natural infection of dicotyledonous plants. Following artificial inoculation, W. circinata var. zeae isolates caused mild to medium root necrosis of seedlings of 14 monocotyledonous and dicotyledonous plant species, including cabbage and oilseed rape, implying a wider host range than known for W. circinata var. zeae. Additionally, this is the first occurrence of W. circinata var. zeae. on dicotyledonous host plants in Europe. As cabbage and oilseed rape are important crops grown on substantial areas not only Serbia, but worldwide, the occurrence of the new soil- borne pathogen with a broad host range such as Waitea circinata var. zeae, imposes the necessity for changes in routine disease control practice, particularly crop rotation with susceptible, mainly monocotyledonous crops.} }

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