#rhizobia — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #rhizobia, aggregated by home.social.
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Hare's-foot #clover, #Trifolium #arvense (#Fabaceae), is native to Europe/Western Asia and inhabits dry, sandy, nitrate-poor #habitats. #Seeds are enclosed in feathery calyxes that protect against desiccation, serve as #flightorgans, but also adhere to animals. It hosts #symbiotic nitrogen-fixing bacteria (paraphyletic "#Rhizobia"), which S. Schulz et al. (2013) analyzed in more detail via functional marker gene nifH.
©#StefanFWirth #Berlin 2025Ref
https://doi.org/10.5194/bg-10-1183-2013#Photos
©S.F.Wirth -
Hare's-foot #clover, #Trifolium #arvense (#Fabaceae), is native to Europe/Western Asia and inhabits dry, sandy, nitrate-poor #habitats. #Seeds are enclosed in feathery calyxes that protect against desiccation, serve as #flightorgans, but also adhere to animals. It hosts #symbiotic nitrogen-fixing bacteria (paraphyletic "#Rhizobia"), which S. Schulz et al. (2013) analyzed in more detail via functional marker gene nifH.
©#StefanFWirth #Berlin 2025Ref
https://doi.org/10.5194/bg-10-1183-2013#Photos
©S.F.Wirth -
Hare's-foot #clover, #Trifolium #arvense (#Fabaceae), is native to Europe/Western Asia and inhabits dry, sandy, nitrate-poor #habitats. #Seeds are enclosed in feathery calyxes that protect against desiccation, serve as #flightorgans, but also adhere to animals. It hosts #symbiotic nitrogen-fixing bacteria (paraphyletic "#Rhizobia"), which S. Schulz et al. (2013) analyzed in more detail via functional marker gene nifH.
©#StefanFWirth #Berlin 2025Ref
https://doi.org/10.5194/bg-10-1183-2013#Photos
©S.F.Wirth -
Hare's-foot #clover, #Trifolium #arvense (#Fabaceae), is native to Europe/Western Asia and inhabits dry, sandy, nitrate-poor #habitats. #Seeds are enclosed in feathery calyxes that protect against desiccation, serve as #flightorgans, but also adhere to animals. It hosts #symbiotic nitrogen-fixing bacteria (paraphyletic "#Rhizobia"), which S. Schulz et al. (2013) analyzed in more detail via functional marker gene nifH.
©#StefanFWirth #Berlin 2025Ref
https://doi.org/10.5194/bg-10-1183-2013#Photos
©S.F.Wirth -
Hare's-foot #clover, #Trifolium #arvense (#Fabaceae), is native to Europe/Western Asia and inhabits dry, sandy, nitrate-poor #habitats. #Seeds are enclosed in feathery calyxes that protect against desiccation, serve as #flightorgans, but also adhere to animals. It hosts #symbiotic nitrogen-fixing bacteria (paraphyletic "#Rhizobia"), which S. Schulz et al. (2013) analyzed in more detail via functional marker gene nifH.
©#StefanFWirth #Berlin 2025Ref
https://doi.org/10.5194/bg-10-1183-2013#Photos
©S.F.Wirth -
2024 has been a spectacular year for #phytoplankton symbiosis: @vincentflora at #ISME19.
Nitrogen-fixing #organelle in a marine alga https://www.science.org/doi/10.1126/science.adk1075
#Rhizobia–diatom #symbiosis fixes missing nitrogen in the ocean https://www.nature.com/articles/s41586-024-07495-w
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Rhythmic #GeneExpression in #plants is crucial for #symbiosis with nutrient-providing bacteria
https://phys.org/news/2024-07-rhythmic-gene-crucial-symbiosis-nutrient.htmlPeriodic #cytokinin responses in Lotus japonicus #rhizobium infection and nodule development https://www.science.org/doi/10.1126/science.adk5589
"#Legumes thrive in low-nitrogen environments by partnering with #rhizobia, #soil #bacteria that convert atmospheric #nitrogen into #ammonium, a usable form for the plants. These beneficial bacteria are housed in root nodules formed on legume roots."
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CW: Marine nitrogen fixation (nerdy but awesome!)
Wow!
For years, researchers couldn't identify the source of so much nitrogen (N) in the oceans. It was thought that cyanobacteria were the only organisms capable of fixing nitrogen in marine ecosystems, but their numbers could explain only half of the observed N.
Some years ago, mysterious gene fragments coding for a nitrogenase (the enzyme that fixes nitrogen) were found in seawater samples. These traces were not from cyanobacteria. But then, from who?A recent study found that the N-fixing bacteria are related to Rhizobia and seem to be symbiotic with diatomees (unicellular algae). Yes, *the rhizobia*. *In a symbiosis*. *with unicellular algae* (= plants)
😃
Rhizobia are the bacteria that fix the Nitrogen in the root nodules of leguminous plants, effectively making the rich terrestrial ecosystems possible.
And their cousins in the sea seem to do the same. The plants provide the bacteria carbohydrates (easy-peasy for photosynthetic organisms, as carbon is not their problem) and shelter, and the bacteria fix nitrogen. Just like this. And everyone benefits, including the surrounding ecosystem.
This is really cool and made my day!https://www.nature.com/articles/s41586-024-07495-w
#Microbiology #Ecology #Nitrogen #Rhizobia #NitrogenCycle #Oceans #MarineBiology #SciComm
#ScienceIsWonderful #AmazingScience -
Hi folks, some info about what keeps me busy in the lab. Here we are doing some automate #phenotyping using a linear #multispectral camera/image analysis to detect functional #mutualistic interaction between mimosa plants and different (and evolved) #rhizobia bacteria. When it "works" the plants get #nitrogen from the bacteria and the plant is greener and growth faster. Keep posted for more on this.
