Development of complex pedagogical competencies and reflexivity in clinical teachers via distance learning: a mixed methods study.

Clinical reasoning is the cornerstone to healthcare practice and teaching it appropriately is of utmost importance. Yet there is little formal training for clinical supervisors in supervising this reasoning process. Distance education provides interesting opportunities for continuous professional development of healthcare professionals. This mixed methods study aimed at gaining in-depth understanding about whether and how clinical teachers can develop complex pedagogical competencies through participation in a Massive Open Online Course on the supervision of clinical reasoning (MOOC SCR). Participants self-assed their clinical supervision skills before and after partaking in the MOOC SCR through the Maastricht Clinical Teachers Questionnaire. Item scores and the distribution of response proportions before and after participation were compared using paired t-tests and McNemar's tests respectively. In parallel, the evolution of a subset of MOOC participants' pedagogical practice and posture was explored via semi-structured interviews throughout and beyond their MOOC participation using simulated and personal situational recalls. The verbatim were analysed with standard thematic analysis. Quantitative and qualitative findings converged and their integration demonstrated that partaking in the MOOC SCR promoted the development of complex pedagogical competencies and reflexivity with the participants. This was quantitatively evidenced by significantly higher self-assessed supervision skills and corresponding attitudes after completing the MOOC. The qualitative data provided rich descriptions of how this progression in pedagogical practice and posture occurred in the field and how it was shaped by participants' interaction with the MOOC's content and their motivations to progress. Our findings provide evidence for the development of pedagogical skills and corresponding attitudes for the supervision of clinical reasoning through participation in the MOOC SCR and contribute to the literature body on the opportunities that distance learning provides for the development of pedagogical competencies. The extent to which the pedagogical underpinnings of the MOOC contributed to these developments remains to be determined.

Beet necrotic yellow vein virus subgenomic RNA3 is a cleavage product leading to stable non-coding RNA required for long-distance movement.

Beet necrotic yellow vein virus (BNYVV) is a multipartite RNA virus. BNYVV RNA3 does not accumulate in non-host transgenic Arabidopsis thaliana plants when expressed using a 35S promoter. However, a 3'-derivative species has been detected in transgenic plants and in transient expression assays conducted in Nicotiana benthamiana and Beta macrocarpa. The 3'-derivative species is similar to the previously reported subgenomic RNA3 produced during virus infection. 5' RACE revealed that the truncated forms had identical 5' ends. The 5' termini carried the coremin motif also present on BNYVV RNA5, beet soil-borne mosaic virus RNA3 and 4, and cucumber mosaic virus group 2 RNAs. This RNA3 species lacks a m(7)Gppp at the 5' end of the cleavage products, whether expressed transiently or virally. Mutagenesis revealed the importance of the coremin sequence for both long-distance movement and stabilization of the cleavage product in vivo and in vitro. The isolation of various RNA3 5'-end products suggests the existence of a cleavage between nt 212 and 1234 and subsequent exonucleolytic degradation, leading to the accumulation of a non-coding RNA. When RNA3 was incubated in wheatgerm extracts, truncated forms appeared rapidly and their appearance was protein- and divalent ion-dependent.

Expression of the Beet necrotic yellow vein virus p25 protein induces hormonal changes and a root branching phenotype in Arabidopsis thaliana.

The RNA-3-encoded p25 protein was previously characterized as one of the major symptom determinants of the Beet necrotic yellow vein virus. Previous analyses reported the influence of the p25 protein in root proliferation phenotype observed in rhizomania disease on infected sugar beets (Beta vulgaris). A transgenic approach was developed, in which the p25 protein was constitutively expressed in Arabidopsis thaliana Columbia (Col-0) ecotype in order to provide new clues as to how the p25 protein might promote alone disease development and symptom expression. Transgenic plants were characterized by Southern blot and independent lines carrying single and multiple copies of the transgene were selected. Mapping of the T-DNA insertion was performed on the monocopy homozygote lines. P25 protein was localized both in the nucleus and in the cytoplasm of epidermal and root cells of transgenic plants. Although A. thaliana was not described as a susceptible host for BNYVV infection, abnormal root branching was observed on p25 protein-expressing A. thaliana plants. Moreover, these transgenic plants were more susceptible than wild-type plants to auxin analog treatment (2,4-D) but more resistant to methyl jasmonate (MeJA), abscisic acid (ABA) and to lesser extend to salicylic acid (SA). Hormonal content assays measuring plant levels of auxin (IAA), jasmonate (JA) and ethylene precursor (ACC) revealed major hormonal changes. Global transcript profiling analyses on roots displayed differential gene expressions that could corroborate root branching phenotype and stress signaling modifications.