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Benjamin Bartels on Muck Rack

Benjamin Bartels

As seen in: BioRxiv
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Articles

The give and take in photosymbiosis unraveled by metabolomics of Radiolaria

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By Vera Nikitashina, Benjamin Bartels, Charlotte LeKieffre, Joost Samir Mansour
| BioRxiv
Abstract Marine planktonic Radiolaria harboring symbiotic microalgae are ubiquitous in the oceans and abundant in oligotrophic areas. In these low-nutrient environments they are among the most important primary producers. Systematic studies of radiolarian biology are limited because Radiolaria are non-culturable and prone to damage during sampling.
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High-resolution metabolite imaging: luteolinidin accumulates at the host-cyanobiont interface during cold-acclimation in Azolla symbioses

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By Erbil Gungor, Ron Heeren, Benjamin Bartels, Giorgio Bolchi
| BioRxiv
Abstract Aquatic ferns of the genus Azolla (Azolla) form highly productive symbioses with filamentous cyanobacteria fixing N2 in their leaf cavities, Nostoc azollae. Stressed symbioses characteristically turn red due to 3-deoxyanthocyanin (DA) accumulation, rare in angiosperms and of unknown function. To reveal DA functions upon cold acclimation and recovery, we integrated laser-desorption-ionization mass-spectrometry-imaging (LDI-MSI), a new A.
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