Response of microbial ether lipids in the terrestrial critical zone to environmental and climatic changes

  • 32k

    Total downloads

  • 76k

    Total views and downloads

Submit your idea

You will be redirected to our submission process.

Submit your manuscript summarySubmit your manuscript

About this Research Topic

Submission closed

Background

Diether- and tetraether lipids are widespread in Archaea and Bacteria. In particular, archaeal and bacterial glycerol dialkyl glycerol tetraethers (GDGTs) are different in structure, with the former having isoprenoidal hydrocarbon chains at the sn 2,3 positions between the glycerol backbones whereas the latter having alkyl chains at sn 1,2 positions. While archaeal diethers and GDGTs occur in diverse environmental settings, to date bacterial GDGTs have been identified predominately in the soil environment.

Both types of lipids have been used to develop temperature or environmental proxies that are increasingly popular in studies of paleo-climates or paleo-environments. For example, a sea surface temperature proxy called TEX86 (TetraEther Index of tetraethers having 86 carbons) has been developed based on the relative proportions of archaeal GDGTs that respond to changes in modern sea water temperature. TEX86 has also been used to estimate surface lake water temperatures in large lakes that receive minimal soil runoff. A branched and isoprenoidal tetraether index (BIT) has been developed based on the relative proportions of archaeal and bacterial GDGTs, which estimates the contribution of soil organic carbon to the ocean. The ratio of diether archaeol and tetraether caldarchaeol (a GDGT that does not contain any cyclopentyl ring) is known to indicate changes in salinity and may be a valuable proxy for research in paleohydrology and climate change. Based solely on bacterial GDGTs, the degree of cyclization of branched tetraethers (CBT) and the extent of methylation of branched tetraethers (MBT) have been used to estimate soil pH and continental air temperature, respectively.TEX86 has been applied primarily to marine environments and CBT/MBT proxies primarily to soil or lakes, with application to other systems, such as terrestrial hot springs, being far more limited. These proxies may also respond to changes in environmental variables other than pH or temperature, which, however, have barely been examined. Furthermore, the links between the production of archaeal and bacterial GDGTs and their biological sources are seldom explored. Lastly and most excitingly the development of new approaches is allowing us to identify and quantify the intact polar ether lipids, which will significantly enhance our capability to address the questions mentioned above.

The proposed Research Topic on archaeal and bacterial ether lipids from the terrestrial critical zone (soils, lakes, rivers, peat bogs, terrestrial hot springs, etc.) seeks to expand studies on the possible application of diether and tetraether proxies in diverse terrestrial environments, to enhance understanding of the mechanisms of environmental control on the distribution and abundance of diethers and tetraethers, and to identify the underlying biological sources of these compounds in natural systems.

Manuscripts to be included in this Research Topic will contain reviews, development of methods for improving archaeal or bacterial ether lipids quantification or identification, and research papers addressing the distribution, environmental control, or biological sources of archaeal and bacterial ethers in diverse terrestrial settings.

Important note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.

Topic editors

Frequently asked questions

  • Frontiers' Research Topics are collaborative hubs built around an emerging theme.Defined, managed, and led by renowned researchers, they bring communities together around a shared area of interest to stimulate collaboration and innovation.

    Unlike section journals, which serve established specialty communities, Research Topics are pioneer hubs, responding to the evolving scientific landscape and catering to new communities.

  • The goal of Frontiers' publishing program is to empower research communities to actively steer the course of scientific publishing. Our program was implemented as a three-part unit with fixed field journals, flexible specialty sections, and dynamically emerging Research Topics, connecting communities of different sizes and maturity.

    Research Topics originate from the scientific community. Many of our Research Topics are suggested by existing editorial board members who have identified critical challenges or areas of interest in their field.

  • As an editor, Research Topics will help you build your journal, as well as your community, around emerging, cutting-edge research. As research trailblazers, Research Topics attract high-quality submissions from leading experts all over the world.

    A thriving Research Topic can potentially evolve into a new specialty section if there is sustained interest and a growing community around it.

  • Each Research Topic must be approved by the specialty chief editor, and it falls under the editorial oversight of our editorial boards, supported by our in-house research integrity team. The same standards and rigorous peer review processes apply to articles published as part of a Research Topic as for any other article we publish.

    In 2023, 80% of the Research Topics we published were edited or co-edited by our editorial board members, who are already familiar with their journal's scope, ethos, and publishing model. All other topics are guest edited by leaders in their field, each vetted and formally approved by the specialty chief editor.

  • Publishing your article within a Research Topic with other related articles increases its discoverability and visibility, which can lead to more views, downloads, and citations. Research Topics grow dynamically as more published articles are added, causing frequent revisiting, and further visibility.

    As Research Topics are multidisciplinary, they are cross-listed in several fields and section journals – increasing your reach even more and giving you the chance to expand your network and collaborate with researchers in different fields, all focusing on expanding knowledge around the same important topic.

    Our larger Research Topics are also converted into ebooks and receive social media promotion from our digital marketing team.

     

  • Frontiers offers multiple article types, but it will depend on the field and section journals in which the Research Topic will be featured. The available article types for a Research Topic will appear in the drop-down menu during the submission process.

    Check available article types here 

  • Yes, we would love to hear your ideas for a topic. Most of our Research Topics are community-led and suggested by researchers in the field. Our in-house editorial team will contact you to talk about your idea and whether you’d like to edit the topic. If you’re an early-stage researcher, we will offer you the opportunity to coordinate your topic, with the support of a senior researcher as the topic editor. 

    Suggest your topic here 

  • A team of guest editors (called topic editors) lead their Research Topic. This editorial team oversees the entire process, from the initial topic proposal to calls for participation, the peer review, and final publications.

    The team may also include topic coordinators, who help the topic editors send calls for participation, liaise with topic editors on abstracts, and support contributing authors. In some cases, they can also be assigned as reviewers.

  • As a topic editor (TE), you will take the lead on all editorial decisions for the Research Topic, starting with defining its scope. This allows you to curate research around a topic that interests you, bring together different perspectives from leading researchers across different fields and shape the future of your field. 

     

    You will choose your team of co-editors, curate a list of potential authors, send calls for participation and oversee the peer review process, accepting or recommending rejection for each manuscript submitted.

  • As a topic editor, you're supported at every stage by our in-house team. You will be assigned a single point of contact to help you on both editorial and technical matters. Your topic is managed through our user-friendly online platform, and the peer review process is supported by our industry-first AI review assistant (AIRA).

  • If you’re an early-stage researcher, we will offer you the opportunity to coordinate your topic, with the support of a senior researcher as the topic editor. This provides you with valuable editorial experience, improving your ability to critically evaluate research articles and enhancing your understanding of the quality standards and requirements for scientific publishing, as well as the opportunity to discover new research in your field, and expand your professional network.

  • Yes, certificates can be issued on request. We are happy to provide a certificate for your contribution to editing a successful Research Topic.

  • Research Topics thrive on collaboration and their multi-disciplinary approach around emerging, cutting-edge themes, attract leading researchers from all over the world.

  • As a topic editor, you can set the timeline for your Research Topic, and we will work with you at your pace. Typically, Research Topics are online and open for submissions within a few weeks and remain open for participation for 6 – 12 months. Individual articles within a Research Topic are published as soon as they are ready.

    Find out more about our Research Topics

  • Our fee support program ensures that all articles that pass peer review, including those published in Research Topics, can benefit from open access – regardless of the author's field or funding situation.

    Authors and institutions with insufficient funding can apply for a discount on their publishing fees. A fee support application form is available on our website.

  • In line with our mission to promote healthy lives on a healthy planet, we do not provide printed materials. All our articles and ebooks are available under a CC-BY license, so you can share and print copies.

     

Participating Journals

Impact

  • 76kTopic views
  • 42kArticle views
  • 32kArticle downloads
View impact