Fungal-derived tRNAs are expressed and aminoacylated in orchid mitochondria.

Plant mitochondrial genomes (mitogenomes) experience remarkable levels of horizontal gene transfer (HGT), including the recent discovery that orchids anciently acquired DNA from fungal mitogenomes. Thus far, however, there is no evidence that any of the genes from this interkingdom HGT are functional in orchid mitogenomes. Here, we applied a specialized sequencing approach to the orchid Corallorhiza maculata and found that some fungal-derived tRNA genes in the transferred region are transcribed, post-transcriptionally modified, and aminoacylated.

A programmatic assessment of dolutegravir adverse events and discontinuations in Uganda.

Introduction: Dolutegravir is now extensively used in sub-Saharan Africa as a preferred component of antiretroviral therapy (ART). There is a paucity of large studies using routinely collected data from African people living with HIV on dolutegravir-based regimens to inform HIV programmes. We reviewed data in a large programme clinic of people living with HIV on dolutegravir to determine the real-world safety and tolerability of dolutegravir and to describe drivers of treatment discontinuation.

Flipping the switch on some of the slowest mutating genomes: Direct measurements of plant mitochondrial and plastid mutation rates in mutants.

Plant mitochondrial and plastid genomes have exceptionally slow rates of sequence evolution, and recent work has identified an unusual member of the gene family ("plant ") as being instrumental in preventing point mutations in these genomes. However, the effects of disrupting -mediated DNA repair on "germline" mutation rates have not been quantified. Here, we used mutation accumulation (MA) lines to measure mutation rates in mutants and matched wild type (WT) controls.

Towards ensuring reproducibility of outsourced data generation.

"Big data" generated from outsourced or centralized facilities often lacks methodological information. Here, we outline how and why researchers, service providers, and other parties should report on methodology and sample metadata to improve scientific reproducibility.

Photosynthetic demands on translational machinery drive retention of redundant tRNA metabolism in plant organelles.

Eukaryotic nuclear genomes often encode distinct sets of translation machinery for function in the cytosol vs. organelles (mitochondria and plastids). This raises questions about why multiple translation systems are maintained even though they are capable of comparable functions and whether they evolve differently depending on the compartment where they operate.