---
_id: '6111'
abstract:
- lang: eng
text: 'Neurons develop elaborate morphologies that provide a model for understanding
cellular architecture. By studying C. elegans sensory dendrites, we previously
identified genes that act to promote the extension of ciliated sensory dendrites
during embryogenesis. Interestingly, the nonciliated dendrite of the oxygen-sensing
neuron URX is not affected by these genes, suggesting it develops through a distinct
mechanism. Here, we use a visual forward genetic screen to identify mutants that
affect URX dendrite morphogenesis. We find that disruption of the MAP kinase MAPK-15
or the βH-spectrin SMA-1 causes a phenotype opposite to what we had seen before:
dendrites extend normally during embryogenesis but begin to overgrow as the animals
reach adulthood, ultimately extending up to 150% of their normal length. SMA-1
is broadly expressed and acts non-cell-autonomously, while MAPK-15 is expressed
in many sensory neurons including URX and acts cell-autonomously. MAPK-15 acts
at the time of overgrowth, localizes at the dendrite ending, and requires its
kinase activity, suggesting it acts locally in time and space to constrain dendrite
growth. Finally, we find that the oxygen-sensing guanylate cyclase GCY-35, which
normally localizes at the dendrite ending, is localized throughout the overgrown
region, and that overgrowth can be suppressed by overexpressing GCY-35 or by genetically
mimicking elevated cGMP signaling. These results suggest that overgrowth may correspond
to expansion of a sensory compartment at the dendrite ending, reminiscent of the
remodeling of sensory cilia or dendritic spines. Thus, in contrast to established
pathways that promote dendrite growth during early development, our results reveal
a distinct mechanism that constrains dendrite growth throughout the life of the
animal, possibly by controlling the size of a sensory compartment at the dendrite
ending.'
article_number: e1007435
author:
- first_name: Ian G.
full_name: McLachlan, Ian G.
last_name: McLachlan
- first_name: Isabel
full_name: Beets, Isabel
last_name: Beets
- first_name: Mario
full_name: de Bono, Mario
id: 4E3FF80E-F248-11E8-B48F-1D18A9856A87
last_name: de Bono
orcid: 0000-0001-8347-0443
- first_name: Maxwell G.
full_name: Heiman, Maxwell G.
last_name: Heiman
citation:
ama: McLachlan IG, Beets I, de Bono M, Heiman MG. A neuronal MAP kinase constrains
growth of a Caenorhabditis elegans sensory dendrite throughout the life of the
organism. PLOS Genetics. 2018;14(6). doi:10.1371/journal.pgen.1007435
apa: McLachlan, I. G., Beets, I., de Bono, M., & Heiman, M. G. (2018). A neuronal
MAP kinase constrains growth of a Caenorhabditis elegans sensory dendrite throughout
the life of the organism. PLOS Genetics. Public Library of Science. https://doi.org/10.1371/journal.pgen.1007435
chicago: McLachlan, Ian G., Isabel Beets, Mario de Bono, and Maxwell G. Heiman.
“A Neuronal MAP Kinase Constrains Growth of a Caenorhabditis Elegans Sensory Dendrite
throughout the Life of the Organism.” PLOS Genetics. Public Library of
Science, 2018. https://doi.org/10.1371/journal.pgen.1007435.
ieee: I. G. McLachlan, I. Beets, M. de Bono, and M. G. Heiman, “A neuronal MAP kinase
constrains growth of a Caenorhabditis elegans sensory dendrite throughout the
life of the organism,” PLOS Genetics, vol. 14, no. 6. Public Library of
Science, 2018.
ista: McLachlan IG, Beets I, de Bono M, Heiman MG. 2018. A neuronal MAP kinase constrains
growth of a Caenorhabditis elegans sensory dendrite throughout the life of the
organism. PLOS Genetics. 14(6), e1007435.
mla: McLachlan, Ian G., et al. “A Neuronal MAP Kinase Constrains Growth of a Caenorhabditis
Elegans Sensory Dendrite throughout the Life of the Organism.” PLOS Genetics,
vol. 14, no. 6, e1007435, Public Library of Science, 2018, doi:10.1371/journal.pgen.1007435.
short: I.G. McLachlan, I. Beets, M. de Bono, M.G. Heiman, PLOS Genetics 14 (2018).
date_created: 2019-03-19T13:09:28Z
date_published: 2018-06-07T00:00:00Z
date_updated: 2021-01-12T08:06:11Z
day: '07'
ddc:
- '570'
doi: 10.1371/journal.pgen.1007435
extern: '1'
external_id:
pmid:
- '29879119'
file:
- access_level: open_access
checksum: 622036b945365dbc575bea2768aa9bc8
content_type: application/pdf
creator: kschuh
date_created: 2019-03-19T13:18:01Z
date_updated: 2020-07-14T12:47:19Z
file_id: '6112'
file_name: 2018_PLOS_McLachlan.pdf
file_size: 13011506
relation: main_file
file_date_updated: 2020-07-14T12:47:19Z
has_accepted_license: '1'
intvolume: ' 14'
issue: '6'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
pmid: 1
publication: PLOS Genetics
publication_identifier:
issn:
- 1553-7404
publication_status: published
publisher: Public Library of Science
quality_controlled: '1'
status: public
title: A neuronal MAP kinase constrains growth of a Caenorhabditis elegans sensory
dendrite throughout the life of the organism
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 14
year: '2018'
...