DOE Joint Genome Institute

  • COVID-19
  • About Us
  • Contact Us
  • Our Science
    • DOE Mission Areas
    • Bioenergy Research Centers
    • Science Programs
    • Science Highlights
    • Scientists
    Data yielded from RIViT-seq increased the number of sigma factor-gene pairs confirmed in Streptomyces coelicolor from 209 to 399. Here, grey arrows denote previously known regulation and red arrows are regulation identified by RIViT-seq; orange nodes mark sigma factors while gray nodes mark other genes. (Otani, H., Mouncey, N.J. Nat Commun 13, 3502 (2022). https://doi.org/10.1038/s41467-022-31191-w)
    Streamlining Regulon Identification in Bacteria
    Regulons are a group of genes that can be turned on or off by the same regulatory protein. RIViT-seq technology could speed up associating transcription factors with their target genes.

    More

    (PXFuel)
    Designer DNA: JGI Helps Users Blaze New Biosynthetic Pathways
    In a special issue of the journal Synthetic Biology, JGI scientific users share how they’ve worked with the JGI DNA Synthesis Science Program and what they’ve discovered through their collaborations.

    More

    A genetic element that generates targeted mutations, called diversity-generating retroelements (DGRs), are found in viruses, as well as bacteria and archaea. Most DGRs found in viruses appear to be in their tail fibers. These tail fibers – signified in the cartoon by the blue virus’ downward pointing ‘arms’— allow the virus to attach to one cell type (red), but not the other (purple). DGRs mutate these ‘arms,’ giving the virus opportunities to switch to different prey, like the purple cell. (Courtesy of Blair Paul)
    A Natural Mechanism Can Turbocharge Viral Evolution
    A team has discovered that diversity generating retroelements (DGRs) are not only widespread, but also surprisingly active. In viruses, DGRs appear to generate diversity quickly, allowing these viruses to target new microbial prey.

    More

  • Our Projects
    • Search JGI Projects
    • DOE Metrics/Statistics
    • Approved User Proposals
    • Legacy Projects
    Photograph of a stream of diatoms beneath Arctic sea ice.
    Polar Phytoplankton Need Zinc to Cope with the Cold
    As part of a long-term collaboration with the JGI Algal Program, researchers studying function and activity of phytoplankton genes in polar waters have found that these algae rely on dissolved zinc to photosynthesize.

    More

    This data image shows the monthly average sea surface temperature for May 2015. Between 2013 and 2016, a large mass of unusually warm ocean water--nicknamed the blob--dominated the North Pacific, indicated here by red, pink, and yellow colors signifying temperatures as much as three degrees Celsius (five degrees Fahrenheit) higher than average. Data are from the NASA Multi-scale Ultra-high Resolution Sea Surface Temperature (MUR SST) Analysis product. (Courtesy NASA Physical Oceanography Distributed Active Archive Center)
    When “The Blob” Made It Hotter Under the Water
    Researchers tracked the impact of a large-scale heatwave event in the ocean known as “The Blob” as part of an approved proposal through the Community Science Program.

    More

    A plantation of poplar trees. (David Gilbert)
    Genome Insider podcast: THE Bioenergy Tree
    The US Department of Energy’s favorite tree is poplar. In this episode, hear from ORNL scientists who have uncovered remarkable genetic secrets that bring us closer to making poplar an economical and sustainable source of energy and materials.

    More

  • Data & Tools
    • IMG
    • Data Portal
    • MycoCosm
    • PhycoCosm
    • Phytozome
    • GOLD
    HPCwire Editor's Choice Award (logo crop) for Best Use of HPC in the Life Sciences
    JGI Part of Berkeley Lab Team Awarded Best Use of HPC in Life Sciences
    The HPCwire Editors Choice Award for Best Use of HPC in Life Sciences went to the Berkeley Lab team comprised of JGI and ExaBiome Project team, supported by the DOE Exascale Computing Project for MetaHipMer, an end-to-end genome assembler that supports “an unprecedented assembly of environmental microbiomes.”

    More

    With a common set of "baseline metadata," JGI users can more easily access public data sets. (Steve Wilson)
    A User-Centered Approach to Accessing JGI Data
    Reflecting a structural shift in data access, the JGI Data Portal offers a way for users to more easily access public data sets through a common set of metadata.

    More

    Phytozome portal collage
    A More Intuitive Phytozome Interface
    Phytozome v13 now hosts upwards of 250 plant genomes and provides users with the genome browsers, gene pages, search, BLAST and BioMart data warehouse interfaces they have come to rely on, with a more intuitive interface.

    More

  • User Programs
    • Calls for Proposals
    • Special Initiatives & Programs
    • Product Offerings
    • User Support
    • Policies
    • Submit a Proposal
    screencap from Amundson and Wilkins subsurface microbiome video
    Digging into Microbial Ecosystems Deep Underground
    JGI users and microbiome researchers at Colorado State University have many questions about the microbial communities deep underground, including the role viral infection may play in other natural ecosystems.

    Read more

    Yeast strains engineered for the biochemical conversion of glucose to value-added products are limited in chemical output due to growth and viability constraints. Cell extracts provide an alternative format for chemical synthesis in the absence of cell growth by isolating the soluble components of lysed cells. By separating the production of enzymes (during growth) and the biochemical production process (in cell-free reactions), this framework enables biosynthesis of diverse chemical products at volumetric productivities greater than the source strains. (Blake Rasor)
    Boosting Small Molecule Production in Super “Soup”
    Researchers supported through the Emerging Technologies Opportunity Program describe a two-pronged approach that starts with engineered yeast cells but then moves out of the cell structure into a cell-free system.

    More

    These bright green spots are fluorescently labelled bacteria from soil collected from the surface of plant roots. For reference, the scale bar at bottom right is 10 micrometers long. (Rhona Stuart)
    A Powerful Technique to Study Microbes, Now Easier
    In JGI's Genome Insider podcast: LLNL biologist Jennifer Pett-Ridge collaborated with JGI scientists through the Emerging Technologies Opportunity Program to semi-automate experiments that measure microbial activity in soil.

    More

  • News & Publications
    • News
    • Blog
    • Podcasts
    • Webinars
    • Publications
    • Newsletter
    • Logos and Templates
    • Photos
    A view of the mangroves from which the giant bacteria were sampled in Guadeloupe. (Hugo Bret)
    Giant Bacteria Found in Guadeloupe Mangroves Challenge Traditional Concepts
    Harnessing JGI and Berkeley Lab resources, researchers characterized a giant - 5,000 times bigger than most bacteria - filamentous bacterium discovered in the Caribbean mangroves.

    More

    In their approved proposal, Frederick Colwell of Oregon State University and colleagues are interested in the microbial communities that live on Alaska’s glacially dominated Copper River Delta. They’re looking at how the microbes in these high latitude wetlands, such as the Copper River Delta wetland pond shown here, cycle carbon. (Courtesy of Rick Colwell)
    Monitoring Inter-Organism Interactions Within Ecosystems
    Many of the proposals approved through JGI's annual Community Science Program call focus on harnessing genomics to developing sustainable resources for biofuels and bioproducts.

    More

    Coloring the water, the algae Phaeocystis blooms off the side of the sampling vessel, Polarstern, in the temperate region of the North Atlantic. (Katrin Schmidt)
    Climate Change Threatens Base of Polar Oceans’ Bountiful Food Webs
    As warm-adapted microbes edge polewards, they’d oust resident tiny algae. It's a trend that threatens to destabilize the delicate marine food web and change the oceans as we know them.

    More

Our Science
Home › Science Highlights › The Case for Conservation

October 26, 2021

The Case for Conservation

How sex chromosomes “older than dinosaurs” could help improve crop yields. 

Female (left) and male (right) Ceratodon purpureus plants. Females typically grow larger than males in several traits, like the length of leaves. Males often turn red when developing antheridiophores, which in mosses are the structures that produce sperm (seen in the bottom right. (Sarah Carey)

Female (left) and male (right) Ceratodon purpureus plants. Females typically grow larger than males in several traits, like the length of leaves. Males often turn red when developing antheridiophores, which in mosses are the structures that produce sperm (seen in the bottom right. (Sarah Carey)

The Science

The fire moss Ceratodon purpureus is a short plant with a complex genome. Now, high-quality reference genome sequences of the male and female plants, each representing a single set of chromosomes, are available. The genome assemblies highlight the multiple advances in sequencing technologies applied to the effort.

The Impact

Found on all continents, including Antarctica where it is a major part of the flora, fire moss has adapted to conditions such as UV irradiation, heavy metal contamination, and drought. The moss genomes’ metabolic pathways could lead to the discovery of genes that could be used for multiple biotechnological applications. These applications include crop improvement insights that could benefit candidate biofuel crops.

Summary

On the TV show “Antiques Roadshow,” the guests are often both surprised and pleased to learn the value of their item. Part of that pleasure comes from finally having an answer to the question, “Why bother keeping this?”

Close-up of the male Ceratodon purpureus genome isolate, R40. (Sarah Carey)

Close-up of the male Ceratodon purpureus genome isolate, R40. (Sarah Carey)

For Stuart McDaniel’s lab at the University of Florida, an answer is in sight for a similar question. In a recent Scientific Advances article, a team led by McDaniel and his former graduate student Sarah Carey, now at the HudsonAlpha Institute for Biotechnology, reported that high quality genome references are now available for male and female plants of fire moss.

Most notably, the work revealed that the U and V sex chromosomes of fire moss comprise a full third of each moss genome, and are almost four times the size of the next largest chromosome. As the study first author Carey put it, these sex chromosomes first evolved when the Earth’s continents were still Pangea.

McDaniel’s lab continues to work on the enigma of why the ancient moss sex chromosomes continue to evolve so rapidly in gene content and structure. He and JGI Plant Program head Jeremy Schmutz already see how lessons from moss sex chromosomes can be applied to improve crop breeding. For example, Schmutz noted, specific genes of interest could be associated with a plant’s sex. One outcome could be superfemale plants that have increased fruit and seed yield. Conversely, some crops such as bioenergy sorghum may need sterile males; plant breeding experiments could be completed faster without extra crosses.

The work wraps more than a decade of working with researchers at the U.S. Department of Energy (DOE) Joint Genome Institute (JGI), a DOE Office of Science User Facility located at Lawrence Berkeley National Laboratory (Berkeley Lab), and at HudsonAlpha. As the team discussed in a JGI podcast episode about the work, the effort to fully sequence the fire moss genomes ran the gamut of sequencing technologies, from making a bacterial artificial chromosome library to long-read sequencing.

On “Antiques Roadshow,” an item’s appraisal often ends with the owner saying, “We’re not going to sell it, of course.” McDaniel’s lab predicts the decoded complex plant genomes will lead his team to a similar sense of satisfaction.

Contacts:

BER Contact
Ramana Madupu, Ph.D.
Program Manager
Biological Systems Sciences Division
Office of Biological and Environmental Research
Office of Science
US Department of Energy
Ramana.Madupu@science.doe.gov

PI Contact
Stuart McDaniel
University of Florida
stuartmcdaniel@ufl.edu

Funding:

This work was supported by NSF DEB-1541005 and start-up funds from UF to S.F.M.; microMORPH Cross-Disciplinary Training Grant, Sigma-Xi Grant-In-Aid of Research, and Society for the Study of Evolution Rosemary Grant Award to S.B.C.; NSF DEB-1239992 to N.J.W.; the Emil Aaltonen Foundation and the University of Turku to S.O.; and NSF DEB1541506 to J.G.B. and S.F.M. The work conducted by the U.S. Department of Energy Joint Genome Institute was supported by the Office of Science of the U.S. Department of Energy under contract no. DE-AC02-05CH11231.

Publication:

  • Carey SB et al. Gene-rich UV sex chromosomes harbor conserved regulators of sexual development. Science. 2021 Jun 30. 7(27):eabh2488. doi: 10.1126/sciadv.abh2488

Related Links:

    • JGI Genome Insider podcast: The Big Deal About Short Plants
    • University of Florida story: “This Moss’s Huge 300 Million Year Old Sex Chromosomes Offer Clues About Our Own”
    • HudsonAlpha story: “Researchers sequenced plant chromosomes that are older than the dinosaurs”
    • Ceratodon purpureus genome sequence on the JGI plant data portal Phytozome

 

 

Byline: Massie S. Ballon

Share this:

  • Click to share on Facebook (Opens in new window)
  • Click to share on LinkedIn (Opens in new window)
  • Click to share on Pinterest (Opens in new window)
  • Click to share on Twitter (Opens in new window)
  • Click to print (Opens in new window)

The U.S. Department of Energy Joint Genome Institute, a DOE Office of Science User Facility at Lawrence Berkeley National Laboratory, is committed to advancing genomics in support of DOE missions related to clean energy generation and environmental characterization and cleanup. JGI provides integrated high-throughput sequencing and computational analysis that enable systems-based scientific approaches to these challenges. Follow @jgi on Twitter.

DOE’s Office of Science is the largest supporter of basic research in the physical sciences in the United States, and is working to address some of the most pressing challenges of our time. For more information, please visit science.energy.gov.

Filed Under: News Releases, Science Highlights Tagged With: 2022-progress-sci-highlight

More topics:

  • COVID-19 Status
  • News
  • Science Highlights
  • Blog
  • Webinars
  • CSP Plans
  • Featured Profiles

Related Content:

Introducing New Members of the JGI User Executive Committee

incoming 2023 UEC members

JGI Contributes Nine to 2022 Highly Cited Researchers List

Nine headshots, one for each researcher, laid out beside a purple ribbon reading, "Home to Highly Cited Researchers 2022 Clarivate"

JGI announces first round of 2023 New Investigator awardees

Digital ID card with 10 headshots reads: Congratulations to our 2023 New Investigator recipients!

JGI at 25: Following Fungi that Pry Apart Plant Polymers

A brown goat with white horns looks at green hay

Exploring Possibilities: 2022 JGI-UC Merced Interns

2022 JGI-UC Merced interns (Thor Swift/Berkeley Lab)

JGI at 25: Using team science to build communities around data

  • Careers
  • Contact Us
  • Events
  • User Meeting
  • MGM Workshops
  • Internal
  • Disclaimer
  • Credits
  • Policies
  • Emergency Info
  • Accessibility / Section 508 Statement
  • Flickr
  • LinkedIn
  • RSS
  • Twitter
  • YouTube
Lawrence Berkeley National Lab Biosciences Area
A project of the US Department of Energy, Office of Science

JGI is a DOE Office of Science User Facility managed by Lawrence Berkeley National Laboratory

© 1997-2023 The Regents of the University of California