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Special Issue "Molecular Biology of Phototrophic Bacterial"

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Microbiology".

Deadline for manuscript submissions: 31 January 2022.

Special Issue Editor

Dr. Jill Zeilstra-Ryalls
E-Mail Website
Guest Editor
Department of Biological Sciences, Bowling Green State University, Bowling Green, OH 43403, USA
Interests: gene regulation; tetrapyrrole biosynthesis; enzymology; protein structure-function relationships

Special Issue Information

Dear Colleagues,

Phototrophic bacteria are a very diverse collection of organisms, encompassing those that can abstract electrons from water and evolve oxygen (similar to plants), to the anoxygenic phototrophs whose sources of electrons are molecules other than water. There are a number of species within each of these broad groupings that are further distinguished from each other with respect to their mechanisms of obtaining energy from light, and with respect to other associated aspects of their physiologies. This Special Issue focuses on the transcription regulation of phototrophic genes, which include those that code for proteins required to harvest light energy, as well as those that code for enzymes that synthesize pigments and other molecules integral to phototrophy. Rather than limiting the content to regulation in one or another kind of bacterium, this Special Issue is directed towards highlighting the variety of mechanisms that these organisms have evolved to achieve the regulation required to meet their individual needs.

Dr. Jill Zeilstra-Ryalls
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • bacterial phototrophy
  • transcription regulation
  • light energy
  • microbial physiology
  • gene expression

Published Papers (1 paper)

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Research

Article
A Complex Network of Sigma Factors and sRNA StsR Regulates Stress Responses in R. sphaeroides
Int. J. Mol. Sci. 2021, 22(14), 7557; https://0-doi-org.brum.beds.ac.uk/10.3390/ijms22147557 - 14 Jul 2021
Viewed by 630
Abstract
Adaptation of bacteria to a changing environment is often accompanied by remodeling of the transcriptome. In the facultative phototroph Rhodobacter sphaeroides the alternative sigma factors RpoE, RpoHI and RpoHII play an important role in a variety of stress responses, including heat, oxidative stress [...] Read more.
Adaptation of bacteria to a changing environment is often accompanied by remodeling of the transcriptome. In the facultative phototroph Rhodobacter sphaeroides the alternative sigma factors RpoE, RpoHI and RpoHII play an important role in a variety of stress responses, including heat, oxidative stress and nutrient limitation. Photooxidative stress caused by the simultaneous presence of chlorophylls, light and oxygen is a special challenge for phototrophic organisms. Like alternative sigma factors, several non-coding sRNAs have important roles in the defense against photooxidative stress. RNAseq-based transcriptome data pointed to an influence of the stationary phase-induced StsR sRNA on levels of mRNAs and sRNAs with a role in the photooxidative stress response. Furthermore, StsR also affects expression of photosynthesis genes and of genes for regulators of photosynthesis genes. In vivo and in vitro interaction studies revealed that StsR, that is under control of the RpoHI and RpoHII sigma factors, targets rpoE mRNA and affects its abundance by altering its stability. RpoE regulates expression of the rpoHII gene and, consequently, expression of stsR. These data provide new insights into a complex regulatory network of protein regulators and sRNAs involved in defense against photooxidative stress and the regulation of photosynthesis genes. Full article
(This article belongs to the Special Issue Molecular Biology of Phototrophic Bacterial)
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