Scientists map hundreds of hidden microbes living in marsh grass roots
Rolando JL, Krueger GM, Duchesneau K, Kostka JE
Soil Health
The marsh grass you see waving along East Coast tidal flats depends on an unseen cast of root and mud microbes to handle salt stress, cycle nutrients, and keep the whole ecosystem stitched together.
Salt marshes along the Atlantic coast are covered in one tough grass called Spartina alterniflora, and researchers wanted to know who else lives down in the mud and roots with it. By sequencing genetic material from 36 samples in Georgia, Virginia, and Massachusetts, they pieced together 434 genomes of bacteria and other microbes, essentially a 'who's who' of the marsh's invisible helpers. This catalog gives scientists a much clearer picture of the microbial partners that help this grass survive salty, flooded, stressful soil.
Key Findings
Researchers assembled 434 metagenome-assembled genomes (MAGs) from Spartina alterniflora root and sediment samples.
Samples came from 36 metagenomic libraries collected across three states: Georgia, Virginia, and Massachusetts.
Collection sites spanned natural environmental stress gradients at each location, capturing microbial diversity under varying conditions.
chevron_right Technical Summary
Scientists cataloged over 400 microbial genomes living in the roots and mud around Spartina alterniflora, the grass that dominates East Coast salt marshes, giving researchers a detailed map of the hidden microbial community that helps these marshes function.
Abstract Preview
Original paper
Metagenome-assembled genomes from Spartina alterniflora salt marsh roots and sediments along the U.S. Atlantic coast.
Spartina alterniflora is the dominant plant in low-elevation salt marshes along the U.S. Atlantic coast. Here, we present 434 metagenome-assembled genomes assembled from 36 metagenomic libraries of...
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Sporobolus alterniflorus, or synonymously known as Spartina alterniflora, the smooth cordgrass, saltmarsh cordgrass, or salt-water cordgrass, is a perennial deciduous grass which is found in intertidal wetlands, especially estuarine salt marshes. It has been reclassified as Sporobolus alterniflor...