Cited by 40Bacterial Genetics and BiotechnologyProbiotics and Fermented FoodsHeat shock proteins research

Transcriptomic time-series analysis of cold- and heat-shock response in psychrotrophic lactic acid bacteria

Open access
Duru, Ilhan Cem, Ylinen, Anne, Belanov, Sergei, Pulido, Alan Avila, Paulin, Lars, Auvinen, Petri·2021·BMC Genomics

Published version of a preprint

Abstract

Background: Psychrotrophic lactic acid bacteria (LAB) species are the dominant species in the microbiota of cold-stored modified-atmosphere-packaged food products and are the main cause of food spoilage. Despite the importance of psychrotrophic LAB, their response to cold or heat has not been studied. Here, we studied the transcriptome-level cold- and heat-shock response of spoilage lactic acid bacteria with time-series RNA-seq for Le. gelidum, Lc. piscium , and P. oligofermentans at 0 °C, 4 °C, 14 °C, 25 °C, and 28 °C. Results: We observed that the cold-shock protein A ( cspA ) gene was the main cold-shock protein gene in all three species. Our results indicated that DEAD-box RNA helicase genes ( cshA , cshB ) also play a critical role in cold-shock response in psychrotrophic LAB. In addition, several RNase genes were involved in cold-shock response in Lc. piscium and P. oligofermentans. Moreover, gene network inference analysis provided candidate genes involved in cold-shock response. Ribosomal proteins, tRNA modification, rRNA modification, and ABC and efflux MFS transporter genes clustered with cold-shock response genes in all three species, indicating that these genes could be part of the cold-shock response machinery. Heat-shock treatment caused upregulation of Clp protease and chaperone genes in all three species. We identified transcription binding site motifs for heat-shock response genes in Le. gelidum and Lc. piscium. Finally, we showed that food spoilage-related genes were upregulated at cold temperatures. Conclusions: The results of this study provide new insights on the cold- and heat-shock response of psychrotrophic LAB. In addition, candidate genes involved in cold- and heat-shock response predicted using gene network inference analysis could be used as targets for future studies.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1186/s12864-020-07338-8

Cites

81 of 81 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The walR regulates cell wall metabolism, ensuring structural integrity and adaptability in harsh environments such as the gastrointestinal tract.

    “The walR regulates cell wall metabolism, ensuring structural integrity and adaptability in harsh environments such as the gastrointestinal tract [78].”

    From Bile Salt Hydrolase Activity in the Food-Derived Strain Levilactobacillus brevis M3R3: Genomic and Functional Characterization (2026) · cites this paper as [78]

    The Discussion links the WalR–WalK system to cold-shock responses in two lactic acid bacteria and says WalK has a reported role in cell-wall modification and peptidoglycan biosynthesis. It suggests, rather than demonstrates, that WalK helps adjust their cell walls to cold; it does not establish that WalR ensures structural integrity or adaptation in the gastrointestinal tract. No page number is available in our copy. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

4 of the 85 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. [42]Schiffthaler B, Serrano A, Street N, Delhomme N. Seidr: a gene meta-network calculation toolkit. bioRxiv. 2019:250696.

Cited by

Sorted by citations

Authors
Duru, I. C., Ylinen, A., Belanov, S., Pulido, A. A., Paulin, L., & Auvinen, P.
Affiliations
University of Helsinki (FI)
Corresponding author
Duru, Ilhan Cem
Venue
BMC Genomics
Published
2021-01-07
Volume
22
Issue
1
Pages
28-28
ISSN
1471-2164 (ISSN-L)
OpenAlex
W3114833742
Cited by
40
References
85
Citations by year
2026: 4 · 2025: 14 · 2024: 7 · 2023: 5 · 2022: 5 · 2021: 5
FWCI
3.09
Type
journal article
Language
en
Open access
Locations
  • BMC Genomics (publishedVersion, cc-by)
  • Research Square (acceptedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Työväentutkimus Vuosikirja (submittedVersion)
Funders
Academy of Finland (307856, 323576)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
Keywords
psychrotrophic lactic acid bacteria, cold shock response, heat shock response, DEAD-box RNA helicase, Clp protease, chaperone genes, food spoilage, modified atmosphere packaging, Leuconostoc gelidum, Lactococcus piscium, gene regulatory networks, ribosomal proteins
MeSH terms
Cold Temperature, Food Microbiology, Heat-Shock Response, Lactobacillales, Transcriptome

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review