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Influence of core divisome proteins on cell division in Streptomyces venezuelae ATCC 10712

Cantlay, Stuart LU ; Sen, Beer Chakra LU ; Flärdh, Klas LU and McCormick, Joseph R. (2021) In Microbiology (Reading, England) 167(2).
Abstract

The sporulating, filamentous soil bacterium Streptomyces venezuelae ATCC 10712 differentiates under submerged and surface growth conditions. In order to lay a solid foundation for the study of development-associated division for this organism, a congenic set of mutants was isolated, individually deleted for a gene encoding either a cytoplasmic (i.e. ftsZ) or core inner membrane (i.e. divIC, ftsL, ftsI, ftsQ, ftsW) component of the divisome. While ftsZ mutants are completely blocked for division, single mutants in the other core divisome genes resulted in partial, yet similar, blocks in sporulation septum formation. Double and triple mutants for core divisome membrane components displayed phenotypes that were similar to those of the... (More)

The sporulating, filamentous soil bacterium Streptomyces venezuelae ATCC 10712 differentiates under submerged and surface growth conditions. In order to lay a solid foundation for the study of development-associated division for this organism, a congenic set of mutants was isolated, individually deleted for a gene encoding either a cytoplasmic (i.e. ftsZ) or core inner membrane (i.e. divIC, ftsL, ftsI, ftsQ, ftsW) component of the divisome. While ftsZ mutants are completely blocked for division, single mutants in the other core divisome genes resulted in partial, yet similar, blocks in sporulation septum formation. Double and triple mutants for core divisome membrane components displayed phenotypes that were similar to those of the single mutants, demonstrating that the phenotypes were not synergistic. Division in this organism is still partially functional without multiple core divisome proteins, suggesting that perhaps other unknown lineage-specific proteins perform redundant functions. In addition, by isolating an ftsZ2p mutant with an altered -10 region, the conserved developmentally controlled promoter was also shown to be required for sporulation-associated division. Finally, microscopic observation of FtsZ-YFP dynamics in the different mutant backgrounds led to the conclusion that the initial assembly of regular Z rings does not per se require the tested divisome membrane proteins, but the stability of Z rings is dependent on the divisome membrane components tested. The observation is consistent with the interpretation that Z ring instability likely results from and further contributes to the observed defects in sporulation septation in mutants lacking core divisome proteins.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
divisome, morphological development, septation, spores, sporulation
in
Microbiology (Reading, England)
volume
167
issue
2
publisher
MAIK Nauka/Interperiodica
external identifiers
  • scopus:85102395064
  • pmid:33400639
ISSN
1465-2080
DOI
10.1099/mic.0.001015
language
English
LU publication?
yes
id
778b7782-4089-43cc-9527-fb5e47987736
date added to LUP
2021-03-26 11:18:54
date last changed
2024-06-15 08:29:54
@article{778b7782-4089-43cc-9527-fb5e47987736,
  abstract     = {{<p>The sporulating, filamentous soil bacterium Streptomyces venezuelae ATCC 10712 differentiates under submerged and surface growth conditions. In order to lay a solid foundation for the study of development-associated division for this organism, a congenic set of mutants was isolated, individually deleted for a gene encoding either a cytoplasmic (i.e. ftsZ) or core inner membrane (i.e. divIC, ftsL, ftsI, ftsQ, ftsW) component of the divisome. While ftsZ mutants are completely blocked for division, single mutants in the other core divisome genes resulted in partial, yet similar, blocks in sporulation septum formation. Double and triple mutants for core divisome membrane components displayed phenotypes that were similar to those of the single mutants, demonstrating that the phenotypes were not synergistic. Division in this organism is still partially functional without multiple core divisome proteins, suggesting that perhaps other unknown lineage-specific proteins perform redundant functions. In addition, by isolating an ftsZ2p mutant with an altered -10 region, the conserved developmentally controlled promoter was also shown to be required for sporulation-associated division. Finally, microscopic observation of FtsZ-YFP dynamics in the different mutant backgrounds led to the conclusion that the initial assembly of regular Z rings does not per se require the tested divisome membrane proteins, but the stability of Z rings is dependent on the divisome membrane components tested. The observation is consistent with the interpretation that Z ring instability likely results from and further contributes to the observed defects in sporulation septation in mutants lacking core divisome proteins.</p>}},
  author       = {{Cantlay, Stuart and Sen, Beer Chakra and Flärdh, Klas and McCormick, Joseph R.}},
  issn         = {{1465-2080}},
  keywords     = {{divisome; morphological development; septation; spores; sporulation}},
  language     = {{eng}},
  number       = {{2}},
  publisher    = {{MAIK Nauka/Interperiodica}},
  series       = {{Microbiology (Reading, England)}},
  title        = {{Influence of core divisome proteins on cell division in Streptomyces venezuelae ATCC 10712}},
  url          = {{https://lup.lub.lu.se/search/files/96040302/Cantlay_2021_accepted_Microbiology_Dec2020_complete.pdf}},
  doi          = {{10.1099/mic.0.001015}},
  volume       = {{167}},
  year         = {{2021}},
}