CRISPR/Cas9 genome editing shows the important role of AZC_2928 gene in nitrogen-fixing bacteria of plants.

AZC_2928 gene (GenBank accession no. BAF88926.1) of Azorhizobium caulinodans ORS571 has sequence homology to 2,3-aminomutases. However, its function is unknown. In this study, we are for the first time to knock out the gene completely in A. caulinodans ORS571 using the current advanced genome editing tool, CRISPR/Cas9. Our results show that the editing efficiency is 34% and AZC_2928 plays an extremely important role in regulating the formation of chemotaxis and biofilm. CRISPR/Cas9 knockout of AZC_2928 (△AZC_2928) significantly enhanced chemotaxis and biofilm formation. Both chemotaxis and biofilm formation play an important role in nitrogen-fixing bacteria and their interaction with their host plants. Interestingly, AZC_2928 did not affect the motility of A. caulinodans ORS571 and the nodulation formation in their natural host plant, Sesbania rostrata. Due to rhizobia needing to form bacteroids for symbiotic nitrogen fixation in mature nodules, AZC_2928 might have a direct influence on nitrogen fixation efficiency rather than the number of nodulations.

'Family court sucks out your soul': Australian general practitioners' experiences supporting domestic violence survivors through family court.

BACKGROUND: Domestic violence is a significant public health issue with survivors experiencing short- and long-term physical, sexual and psychological health issues. Given this, survivors of domestic violence use healthcare services at an increased rate compared to the general population. Therefore, general practitioners (GPs) are well placed to support survivors of domestic violence. However, many practitioners do not feel ready to address this complex issue of domestic violence. Further, there is no research exploring GPs' role in supporting families through family court in the context of domestic violence. METHODS: This study used qualitative methods. Fifteen GPs participated in individual in-depth interviews. The interviews were audio recorded with consent, transcribed verbatim and thematically analysed. RESULTS: The majority of participants were female GPs working in metropolitan settings. Four themes were generated from the data: on different planets, witnessing legal systems abuse, weaponizing mental health in family court and swinging allegiances. Participants had negative perceptions of family court and felt that it operated on a different paradigm to that of general practice which caused difficulties when supporting patients. Participants supported survivors through instances where the court was used by perpetrators to further their abusive behaviour or where the court acted abusively against survivors. In particular, perpetrators and the family court used survivors' mental health against them in court proceedings, which resulted in survivors being reluctant to receive treatment for their mental health. Participants struggled with their allegiances within their patient family and usually opted to support either the mother, the father, or the children. CONCLUSIONS: Implications of these findings for GP training are evident, including curriculum that discusses the intersection of mental health diagnoses and legal proceedings. There may also be a place for health justice partnerships within general practice.