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Plasmodesmata regulate leaf vein patterning

September 27, 2022

Plasmodesmata regulate leaf vein patterning

How do plants form vein networks, in the absence of cellular migration or direct cell-cell interaction? Nguyen Manh Linh and Enrico Scarpella show that a GNOM-dependent combination of polar auxin transport, auxin signal transduction, and movement of an auxin signal through plasmodesmata patterns leaf vascular cells into veins. Also read the related Primer.

Image credit: pbio.3001781

PLOS Biologue

Community blog for PLOS Biology, PLOS Genetics and PLOS Computational Biology.

PLOS BIOLOGUE

09/30/2022

Research article

Prior fear enables rapid memory formation

Giulia Concina, Benedetto Sacchetti and co-authors reveal that the occurrence of a prior fear experience allows new memories to be stored in the cortex immediately, without the need of the prolonged reorganization of brain circuits that characterizes the system memory consolidation.

Image credit: pbio.3001789

Prior fear enables rapid memory formation

Recently Published Articles

Current Issue

Current Issue August 2022

09/29/2022

Primer

Awakening dormant neurons after injury

Neurons lack the ability to regenerate after injury. Mary Tapia and Kevin Park explore a new preregistered study in PLOS Biology that finds that pharmacologically boosting regenerative capacity long after injury in mice, together with an enriched animal environment, promotes axonal and synaptic plasticity.

Image credit: pbio.3001830

Awakening dormant neurons after injury

09/29/2022

Research Article

Don't fall asleep at the wheel

Falling asleep at the wrong time can be dangerous. Stephane Dissel, Markus Klose, Paul Shaw and colleagues show that both time-restricted feeding and acute starvation enhance subsequent waking by reducing sleep drive. Thus internal state modulates sleep-promoting neurons to help animals maintain wakefulness in life-threatening conditions.

Image credit: pbio.3001797

Don't fall asleep at the wheel

09/28/2022

Research Article

When antibiotics prevent evolution of resistance

A study on evolution of antimicrobial resistance, by Jennifer Jagdmann, Dan Andersson and Hervé Nicoloff, reveals how sub-inhibitory concentrations of antibiotics enrich and select for a mutated allele that prevents evolution towards clinically significant levels of antibiotic resistance.

When antibiotics prevent evolution of resistance

Image credit: pbio.3001808

09/28/2022

Primer

Leaf vein patterning

Leaf veins provide a vital transport route in plants, and the formation of vein patterns has fascinated many scientists over the years. Leah Band explores a new PLOS Biology study which reveals how transport through plasmodesmata plays a key role in vein patterning.

Leaf vein patterning

Image credit: pbio.30017811

09/28/2022

Research Article

Delivering lipids to the cleavage furrow

During cytokinesis, it is known that unique lipids with specific biophysical properties are localized to intercellular bridges connecting the two dividing cells, but how does this occur? Govind Kunduri, Usha Acharya, Jairaj Acharya and co-workers show that multivesicular bodies deliver sphingolipids to the ingressing membranes during male meiotic cytokinesis.

Delivering lipids to the cleavage furrow

Image credit: pbio.3001599

09/23/2022

Essay

Pathogen evolution during vaccination campaigns

How might vaccination campaigns affect the evolution of viruses? This Essay explores what is currently known about viral evolution in the context of vaccination, with an eye towards the future evolution of SARS-CoV-2.

Pathogen evolution during vaccination campaigns

Image credit: pbio.3001804

09/22/2022

Methods and Resources

Pseudo-syncing Babesia

Babesia is a genus of apicomplexan parasites that infect vertebrate red blood cells. Single-cell RNA sequencing of three Babesia species to map the replication cycle and construct pseudo-synchronized time-course gene expression profiles.

 Pseudo-syncing Babesia

Image credit: pbio.3001816

09/21/2022

Primer

The evolution of skilled behaviors

This Primer explores a new study which suggests that the emergence of clusters of parvalbumin neurons in the forebrain could reflect a convergent mechanism underlying the evolution of skilled behaviors in birds.

The evolution of skilled behaviors

Image credit: pbio.3001795

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PLOS Biology | ISSN: 1545-7885 (online)