Comparative Sigma Factor-mRNA Levels in Mycobacterium marinum under Stress Conditions and during Host Infection

Das, Sarbashis (författare): Uppsala universitet,Kemisk biologi,Uppsala Univ, Biomed Ctr, Dept Cell & Mol Biol, Uppsala, Sweden.

Jordan, Heather R. (författare): Univ Tennessee, Dept Microbiol, Knoxville, TN 37996 USA.

Cheramie, Martin N. (författare): Univ Louisiana, Dept Biol, Lafayette, LA USA.

Melara, Irma de la Cruz (författare): Uppsala universitet,Kemisk biologi,Uppsala Univ, Biomed Ctr, Dept Cell & Mol Biol, Uppsala, Sweden.

Small, Pamela L. C. (författare): Univ Tennessee, Dept Microbiol, Knoxville, TN 37996 USA.

Dasgupta, Santanu (författare): Uppsala universitet,Mikrobiologi,Uppsala Univ, Biomed Ctr, Dept Cell & Mol Biol, Uppsala, Sweden.

(creator_code:org_t)

2015-10-07
2015
Engelska.
Ingår i: PLOS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 10:10

Relaterad länk:: https://journals.plo...; visa fler...; https://urn.kb.se/re...; https://doi.org/10.1...; visa färre...

Abstract Ämnesord

Stäng

We have used RNASeq and qRT-PCR to study mRNA levels for all s-factors in different Mycobacterium marinum strains under various growth and stress conditions. We also studied their levels in M. marinum from infected fish and mosquito larvae. The annotated s-factors were expressed and transcripts varied in relation to growth and stress conditions. Some were highly abundant such as sigA, sigB, sigC, sigD, sigE and sigH while others were not. The s-factor mRNA profiles were similar after heat stress, during infection of fish and mosquito larvae. The similarity also applies to some of the known heat shock genes such as the a-crystallin gene. Therefore, it seems probable that the physiological state of M. marinum is similar when exposed to these different conditions. Moreover, the mosquito larvae data suggest that this is the state that the fish encounter when infected, at least with respect to s-factor mRNA levels. Comparative genomic analysis of s-factor gene localizations in three M. marinum strains and Mycobacterium tuberculosis H37Rv revealed chromosomal rearrangements that changed the localization of especially sigA, sigB, sigD, sigE, sigF and sigJ after the divergence of these two species. This may explain the variation in species-specific expression upon exposure to different growth conditions.

Av författaren/redakt...: Pettersson, B. M ...; Das, Sarbashis; Behra, Phani Ram ...; Jordan, Heather ...; Ramesh, Malavika; Mallick, Amrita; visa fler...; Root, Kate M.; Cheramie, Martin ...; Melara, Irma de ...; Small, Pamela L. ...; Dasgupta, Santan ...; Ennis, Don G.; Kirsebom, Leif A ...; visa färre...

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