Conversations on death and dying: exploring performance as a prompt.

Background: Death is inevitable, yet for some, conversations around death remain difficult. The stigmatisation of death amongst some cultures has a negative impact with studies showing societies least likely to discuss end of life openly remain the lowest ranked in terms of end-of-life care quality. Out of this understanding have come several socially engaged projects (e.g. Death Cafes, The Conversation Project, Before I Die Festivals) developed to encourage engagement with the subject. Objective: In this article I ask, can autobiographical performance prompt conversations on death and dying? To answer the research question, I examine the socially engaged Death, Dinner, and Performance project, and analyse the effectiveness of the performance/dramaturgical methodology developed in the project to encourage participant engagement with the difficult subjects of death and dying. Design: I look specifically at the use of autobiographical performance strategies in the Death, Dinner, and Performance project and explore the outcomes associated with the adaptation of those strategies (particularly regarding relationality in a socially engaged context) in conversations between participants on death, dying and bereavement. Method: The project adopted a mixed methodology that engaged both Practice as Research (PaR) and qualitative research strategies. Results: PaR reflection and analysis, along with qualitative coding of participant responses allowed an inductive, thematic analysis that highlighted several recurring themes. These are analysed and discussed under two categories in the Analysis and results section at the end of this paper: firstly, in relation to recurring themes in the participants' discussion around the subject of death and dying, and secondly, in relation to the socially engaged strategy (commensality and use of autobiographical performance) used to encourage that discussion.

Community Informed Recruitment: A Promising Method to Enhance Clinical Trial Participation.

CONTEXT: Low recruitment rates in palliative care clinical trials amongst Black and rural individuals have been attributed to lack of trust and procedural barriers. Community engagement strategies have increased clinical trial participation of under-represented populations. OBJECTIVE: Describe a successful community-engaged recruitment strategy in an ongoing multi-site randomized clinical trial (RCT). STUDY DESIGN AND METHODS: Using community-based participatory research principles and input from a prior pilot study's community advisory group (CAG), we designed a novel recruitment strategy for Community Tele-Pal, a three-site, culturally based palliative care tele-consult RCT for Black and White seriously ill inpatients and their family caregivers. Local site CAGs helped design and implement a recruitment strategy in which a CAG member accompanied the study coordinators to introduce the study to eligible patients. Initially, CAG members could not accompany study coordinators in person due to pandemic restrictions. Hence, they created videos of themselves introducing the study, just as they would have done in person. We examined outcomes to date by the three recruitment methods and race. RESULTS: Of the 2879 patients screened, 228 were eligible and approached. Overall, the proportions of patients who consented 102 (44.7%) vs. not consented 126 (55.3%) were similar by race- White (consented= 75 [44.1%]) vs; Black (consented = 27 [46.6%]). Proportionally, consent rates favored CAG-involved methods: coordinator only- 47 approached and 13 (12.7%) consented vs. coordinator/CAG video-105 approached and 60 (58.8%) consented. CONCLUSION: A novel community-enhanced recruitment strategy demonstrated the potential to increase clinical trial participation from historically under-represented populations.

Heterochromatic silencing is reinforced by ARID1-mediated small RNA movement in Arabidopsis pollen.

In the plant male germline, transposable elements (TEs) are reactivated in the companion vegetative nucleus, resulting in siRNA production and the intercellular movement of these siRNAs to reinforce TE silencing in sperm. However, the mechanism by which siRNA movement is regulated remains unexplored. Here we show that ARID1, a transcription factor which is constitutively expressed in the vegetative nucleus but dynamically accumulates in the generative cell (the progenitor of sperm) to promote the second pollen mitosis, mediates siRNA movement to reinforce heterochromatic silencing in the male germline. We looked for regulators involved in the accumulation of ARID1 in the generative cell, and found that AGO9, a germline-specific AGO in Arabidopsis, is required for the accumulation of ARID1 in the generative cell. Mutations in either ARID1 or AGO9 lead to the interruption of not only the second pollen mitosis but also the movement of siRNA from the vegetative nucleus to the male germline, resulting in the release of heterochromatic silencing in the male germline. Moreover, conditional knockdown of ARID1 in the generative cell causes reduced heterochromatic silencing in both bicellular and mature pollen. This study provides insights into how a spatiotemporal transcription factor coordinates heterochromatic silencing and male germline maturation.

Kinase Partner Protein Plays a Key Role in Controlling the Speed and Shape of Pollen Tube Growth in Tomato.

The rapid and responsive growth of a pollen tube requires delicate coordination of membrane receptor signaling, Rho-of-Plants (ROP) GTPase activity switching, and actin cytoskeleton assembly. The tomato (Solanum lycopersicum) kinase partner protein (KPP), is a ROP guanine nucleotide exchange factor (GEF) that activates ROP GTPases and interacts with the tomato pollen receptor kinases LePRK1 and LePRK2. It remains unclear how KPP relays signals from plasma membrane-localized LePRKs to ROP switches and other cellular machineries to modulate pollen tube growth. Here, we biochemically verified KPP's activity on ROP4 and showed that KPP RNA interference transgenic pollen tubes grew slower while KPP-overexpressing pollen tubes grew faster, suggesting that KPP functions as a rheostat for speed control in LePRK2-mediated pollen tube growth. The N terminus of KPP is required for self-inhibition of its ROPGEF activity, and expression of truncated KPP lacking the N terminus caused pollen tube tip enlargement. The C-terminus of KPP is required for its interaction with LePRK1 and LePRK2, and the expression of a truncated KPP lacking the C-terminus triggered pollen tube bifurcation. Furthermore, coexpression assays showed that self-associated KPP recruited actin-nucleating Actin-Related Protein2/3 (ARP2/3) complexes to the tip membrane. Interfering with ARP2/3 activity reduced the pollen tube abnormalities caused by overexpressing KPP fragments. In conclusion, KPP plays a key role in pollen tube speed and shape control by recruiting the branched actin nucleator ARP2/3 complex and an actin bundler to the membrane-localized receptors LePRK1 and LePRK2.

Cell-specific cis-natural antisense transcripts (cis-NATs) in the sperm and the pollen vegetative cells of Arabidopsis thaliana.

Background: cis-NATs (cis-natural antisense transcripts ) are transcribed from opposite strands of adjacent genes and have been shown to regulate gene expression by generating small RNAs from the overlapping region. cis-NATs are important for plant development and resistance to pathogens and stress. Several genome-wide investigations identified a number of cis-NAT pairs, but these investigations predicted cis-NATS using expression data from bulk samples that included lots of cell types. Some cis-NAT pairs identified from those investigations might not be functional, because both transcripts of cis-NAT pairs need to be co-expressed in the same cell. Pollen only contains two cell types, two sperm and one vegetative cell, which makes cell-specific investigation of cis-NATs possible. Methods: We investigated potential protein-coding cis-NATs in pollen and sperm using pollen RNA-seq data and TAIR10 gene models using the Integrated Genome Browser.  We then used sperm microarray data and sRNAs in sperm and pollen to determine possibly functional cis-NATs in the sperm or vegetative cell, respectively. Results: We identified 1471 potential protein-coding cis-NAT pairs, including 131 novel pairs that were not present in TAIR10 gene models. In pollen, 872 possibly functional pairs were identified. 72 and 56 pairs were potentially functional in sperm and vegetative cells, respectively. sRNAs were detected at 794 genes, belonging to 739 pairs. Conclusion: These potential candidates in sperm and the vegetative cell are tools for understanding gene expression mechanisms in pollen.