New Horizons in Terrestrial Cyanobacteria: Advancing Fundamental Understanding of Physiology, Ecology and Genomics

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Environmental Microbiology".

Deadline for manuscript submissions: closed (15 December 2023) | Viewed by 2060

Special Issue Editors


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Guest Editor
Department of Earth, Environmental and Planetary Sciences, Rice University, Houston, TX 77005-1827, USA
Interests: microbial ecology and physiology; soil microbiomes; biocrusts; cyanobacteria; ecological restoration; drylands; climate change

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Guest Editor
Department of Biology, The University of New Mexico, Albuquerque, NM 87131, USA
Interests: predatory bacteria; cyanobacteria; microbial ecology; biocrusts; fungi; soil ecology; agroecology

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Guest Editor
Allonnia, Boston, MA 02210, USA
Interests: environmental microbiology; microbial ecology; cyanobacterial physiology; biocrusts; microbial symbioses; applied microbiomics

Special Issue Information

Dear Colleagues,

Cyanobacteria are ubiquitous, with estimated global biomass of 3 × 1014  g C making them some of the most important organisms on Earth. Typically, cyanobacteria are among the first to colonize terrestrial ecosystems where they play crucial roles in ecosystem functioning, including C and N fixation, nutrient cycling and beneficial interactions with higher plants and other organisms that influence processes at a global scale. In addition, cyanobacteria have potential in industrial, restoration and agricultural practices as a result of their dynamism and adaptability. However, diversity reflects the varied and unique environments in which they’re found with specific conditions within terrestrial habitats dictating species diversity, niche differentiation, and organismal physiological adaptations. Recent developments in cyanobacterial physiology and microbiomics have demonstrated a gap in the fundamental knowledge of cyanobacteria as ecosystem engineers. A deeper study is needed to expand knowledge in areas such as their function in conjunction with soil characteristics, interactions with other organisms such as plants and metabolic capacity for human benefit.

We welcome submissions of original scientific research articles, modeling, communications, comprehensive (mini)-reviews, comments, or perspectives. Topics of interest include but are not restricted to holistic studies of terrestrial cyanobacteria physiology, ecology and genomics as well as their use in restoration, agriculture and industry. Diversity studies of extreme or understudied environments are also encouraged. 

Dr. Ana Giraldo-Silva
Dr. Julie Bethany Rakes
Dr. Corey Nelson
Guest Editors

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Keywords

  • terrestrial cyanobacteria
  • cyanobacterial physiology
  • cyanobacterial ecology
  • microbial interactions
  • ecological restoration
  • biotechnology

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Published Papers (1 paper)

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Research

18 pages, 2995 KiB  
Article
Cultivating Resilience in Dryland Soils: An Assisted Migration Approach to Biological Soil Crust Restoration
by Sierra D. Jech, Natalie Day, Nichole N. Barger, Anita Antoninka, Matthew A. Bowker, Sasha Reed and Colin Tucker
Microorganisms 2023, 11(10), 2570; https://doi.org/10.3390/microorganisms11102570 - 15 Oct 2023
Cited by 1 | Viewed by 1648
Abstract
Land use practices and climate change have driven substantial soil degradation across global drylands, impacting ecosystem functions and human livelihoods. Biological soil crusts, a common feature of dryland ecosystems, are under extensive exploration for their potential to restore the stability and fertility of [...] Read more.
Land use practices and climate change have driven substantial soil degradation across global drylands, impacting ecosystem functions and human livelihoods. Biological soil crusts, a common feature of dryland ecosystems, are under extensive exploration for their potential to restore the stability and fertility of degraded soils through the development of inoculants. However, stressful abiotic conditions often result in the failure of inoculation-based restoration in the field and may hinder the long-term success of biocrust restoration efforts. Taking an assisted migration approach, we cultivated biocrust inocula sourced from multiple hot-adapted sites (Mojave and Sonoran Deserts) in an outdoor facility at a cool desert site (Colorado Plateau). In addition to cultivating inoculum from each site, we created an inoculum mixture of biocrust from the Mojave Desert, Sonoran Desert, and Colorado Plateau. We then applied two habitat amelioration treatments to the cultivation site (growth substrate and shading) to enhance soil stability and water availability and reduce UV stress. Using marker gene sequencing, we found that the cultivated mixed inoculum comprised both local- and hot-adapted cyanobacteria at the end of cultivation but had similar cyanobacterial richness as each unmixed inoculum. All cultivated inocula had more cyanobacterial 16S rRNA gene copies and higher cyanobacterial richness when cultivated with a growth substrate and shade. Our work shows that it is possible to field cultivate biocrust inocula sourced from different deserts, but that community composition shifts toward that of the cultivation site unless habitat amelioration is employed. Future assessments of the function of a mixed inoculum in restoration and its resilience in the face of abiotic stressors are needed to determine the relative benefit of assisted migration compared to the challenges and risks of this approach. Full article
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