Neurons receive a large number of active synaptic inputs from their many presynaptic partners across their dendritic tree. However, little is known about how the relative strengths of individual synapses are juggled to effectively encode information while maintaining network homeostasis. Here, to gain insights into the basic cellular rules that drive the activity-dependent spatial distribution of pre- and postsynaptic strengths across incoming axons and dendrites, Letellier et al.Letellier et al. combine patch-clamp recordings with live-cell imaging of hippocampal pyramidal neurons in dissociated cultures and organotypic slices. The study provides evidence for a potential homeostatic mechanism by which the rapid changes in global or distant postsynaptic strengths compensate for input-specific presynaptic plasticity. The image depicts the 2D projection of a stack of confocal microscopy planes of CA3 pyramidal cells (expressing fluorescent proteins EGFP or tdTomato) making sparse recurrent connections in organotypic slices of mouse hippocampus. The color code represents the z position of the different confocal planes.
Image Credit: Mathieu Letellier
Essays
Transmissible cancer and the evolution of sex
PLOS Biology: published June 6, 2019 | https://doi.org/10.1371/journal.pbio.3000275
Improving big citizen science data: Moving beyond haphazard sampling
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Perspectives
Plan U: Universal access to scientific and medical research via funder preprint mandates
PLOS Biology: published June 4, 2019 | https://doi.org/10.1371/journal.pbio.3000273
Evolution or revolution? Changing the way science is published and communicated
PLOS Biology: published June 4, 2019 | https://doi.org/10.1371/journal.pbio.3000272
Plant health emergencies demand open science: Tackling a cereal killer on the run
PLOS Biology: published June 3, 2019 | https://doi.org/10.1371/journal.pbio.3000302
Challenges and recommendations to improve the installability and archival stability of omics computational tools
PLOS Biology: published June 20, 2019 | https://doi.org/10.1371/journal.pbio.3000333
Applying the science of measurement to biology: Why bother?
PLOS Biology: published June 20, 2019 | https://doi.org/10.1371/journal.pbio.3000338
Primer
Rhythm and time in the premotor cortex
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Research Articles
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Short Reports
A natural histone H2A variant lacking the Bub1 phosphorylation site and regulated depletion of centromeric histone CENP-A foster evolvability in Candida albicans
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Methods and Resources
The object space task shows cumulative memory expression in both mice and rats
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FishNET: An automated relational database for zebrafish colony management
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Protein interactions and consensus clustering analysis uncover insights into herpesvirus virion structure and function relationships
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Fully automated leg tracking of Drosophila neurodegeneration models reveals distinct conserved movement signatures
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Formal Comment
Pleiotropy and synergistic cooperation
PLOS Biology: published June 21, 2019 | https://doi.org/10.1371/journal.pbio.3000320