ABSTRACT
Cankers leading to branch, stem and plant death were observed on the South African endemic Rafnia amplexicaulis (Fabaceae) in the Cederberg Wilderness Area, South Africa, during September 2021. Conidiomatal pycnidia were found developing on the cankers, and isolations consistently yielded a Microsphaeropsis species. Phylogenetic analysis based on partial nucleotide sequences of the internal transcribed spacers (ITS), the nuclear large subunit (LSU) and RNA polymerase II second largest subunit (RPB2) regions showed that the fungus represented an undescribed species. Based on the multigene phylogeny and morphological characteristics, we describe the species here as M. rafniae sp. nov. Pathogenicity tests and the fulfilment of Koch's postulates confirmed that M. rafniae sp. nov. is the cause of the cankers of R. amplexicaulis. Presently, this disease is known from a single location in South Africa, and further surveys are required to determine its distribution and relative importance. Citation: Paap T, Marincowitz S, Pham NQ, Roets F, Basson RJ, Wingfield BD, Oberlander K, Wingfield MJ (2023). A novel species of Microsphaeropsis causing cankers on Rafnia amplexicaulis in South Africa. Fungal Systematics and Evolution 12: 73-80. doi: 10.3114/fuse.2023.12.05.
ABSTRACT
BACKGROUND: Commitment to change has gained increasing use in assessing short course effectiveness. This study examined the changes that learners intended to make in practice following an intensive day-long course offered at multiple sites, counted changes relative to the curriculum's focus, and analyzed which changes were implemented in practice. METHODS: Participants at a course on the management of male sexual dysfunction were asked to identify the changes to which they would commit. Six months after the course, they were asked to indicate which changes they implemented fully, partially, or not at all. RESULTS: A total of 352 physicians attended the courses held in 21 centers. A majority of attendees (344 or 97.7%) completed forms at the end of the course, providing 1,635 commitment statements. Six months later, 197 (57.3%) physicians provided follow-up data about 935 (55.4%) of the commitment statements originally submitted. Of these, 602 (66.52%) were completely implemented. Many of the changes related to two specific aspects of the course, namely, sexual history taking and medical intervention, accounting for 45.93% of the intended commitments and 47.67% of the changes completely implemented. Slightly over half (58%) of the course time was devoted to these two areas. There was a significant correlation between the number of changes and the amount of time allocated to that content within the course. FINDINGS: Commitment to change statements offered by course participants can be used to examine the impact of a course relative to its learning focus. Continuing medical education providers must take a critical look at commitment to change statements as an "intervention" in their own right and determine how the tool can best be used as a continuing medical education intervention.
