Shedding of cilia occurs from unicellular organisms to metazoans. Although essential during the cell cycle and during neurogenesis, the process remains poorly understood. In all cellular models, this phenomenon occurs distal to the transition zone (TZ), suggesting the underlying molecular mechanisms might be conserved. TZ module proteins are known to cooperate to establish TZ formation and function; to determine whether they also control deciliation, Gogendeau et al. studied the function of five TZ module proteins in the ciliate Paramecium tetraurelia. They found that all proteins are recruited to the TZ of growing cilia and localize with 9-fold symmetry at the level of the most distal part of the TZ. Depletion of some of these proteins induces constant deciliation of some cilia, while depletion of the others prevents calcium/ethanol-induced deciliation. This constitutes the first evidence for a role of conserved TZ proteins in deciliation and opens up new directions for understanding the physiology of motile cilia. The image shows the ciliary pattern of paramecia treated with control RNAi (top left) or RNAi for three different TZ proteins. Cells were stained for mono-glycylated tubulin (magenta) to show cilia tips and poly-glutamylated tubulin (green) to show basal bodies and cilia.
Image Credit: pbio.3000640
Editorial
The future of PLOS Biology
PLOS Biology: published March 31, 2020 | https://doi.org/10.1371/journal.pbio.3000707
Essay
Vocal learning: Beyond the continuum
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Unsolved Mystery
Sex and suicide: The curious case of Toll-like receptors
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Perspectives
Combating antiscience: Are we preparing for the 2020s?
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What is replication?
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Frontloading selectivity: A third way in scientific publishing?
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Preregistration of exploratory research: Learning from the golden age of discovery
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Community Page
Interactive youth science workshops benefit student participants and graduate student mentors
PLOS Biology: published March 30, 2020 | https://doi.org/10.1371/journal.pbio.3000668
Research Articles
Eco-evolutionary significance of “loners”
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Context-dependent genetic architecture of Drosophila life span
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Evolutionary repair: Changes in multiple functional modules allow meiotic cohesin to support mitosis
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Context effects on probability estimation
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Neural oscillations in the fronto-striatal network predict vocal output in bats
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Early visual motion experience shapes the gap junction connections among direction selective ganglion cells
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Crumbs2 mediates ventricular layer remodelling to form the spinal cord central canal
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CsIVP functions in vasculature development and downy mildew resistance in cucumber
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Eomes broadens the scope of CD8 T-cell memory by inhibiting apoptosis in cells of low affinity
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Swimming motility of a gut bacterial symbiont promotes resistance to intestinal expulsion and enhances inflammation
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Drosophila-associated bacteria differentially shape the nutritional requirements of their host during juvenile growth
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Bacterially produced metabolites protect C. elegans neurons from degeneration
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A long noncoding RNA sensitizes genotoxic treatment by attenuating ATM activation and homologous recombination repair in cancers
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Mechanism of cargo recognition by retromer-linked SNX-BAR proteins
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A G protein–coupled receptor mediates neuropeptide-induced oocyte maturation in the jellyfish Clytia
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Cryo-EM structures of the human PA200 and PA200-20S complex reveal regulation of proteasome gate opening and two PA200 apertures
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Dynamics in the murine norovirus capsid revealed by high-resolution cryo-EM
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Characterization of a membrane binding loop leads to engineering botulinum neurotoxin B with improved therapeutic efficacy
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Low mutational load and high mutation rate variation in gut commensal bacteria
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Drifting codes within a stable coding scheme for working memory
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Asymmetric sampling in human auditory cortex reveals spectral processing hierarchy
PLOS Biology: published March 2, 2020 | https://doi.org/10.1371/journal.pbio.3000207
Maternal obesity-induced endoplasmic reticulum stress causes metabolic alterations and abnormal hypothalamic development in the offspring
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A widespread family of heat-resistant obscure (Hero) proteins protect against protein instability and aggregation
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Short Reports
The smell of hunger: Norway rats provision social partners based on odour cues of need
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Neuronal activity triggers uptake of hematopoietic extracellular vesicles in vivo
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MKS-NPHP module proteins control ciliary shedding at the transition zone
PLOS Biology: published March 12, 2020 | https://doi.org/10.1371/journal.pbio.3000640
Methods and Resources
IL-23 signaling regulation of pro-inflammatory T-cell migration uncovered by phosphoproteomics
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Surfactant-enhanced DNA accessibility to nuclease accelerates phenotypic β-lactam antibiotic susceptibility testing of Neisseria gonorrhoeae
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