Publications by authors named "Brigitte Pickel"
Article Synopsis
- The study investigates the diverse fungal communities present in the roots of Arabidopsis thaliana and how they influence the plant's health and disease.
- Researchers sequenced genomes from 41 fungal isolates and compared them to 79 other plant-associated fungi, finding that these root fungi originated from various ancestors and possess multiple enzymes related to plant cell wall degradation.
- The findings suggest that harmful fungi tend to outcompete beneficial ones in colonizing plant roots, and a specific pectin-degrading enzyme family is connected to how this colonization impacts plant health.
Tryptophan metabolism and bacterial commensals prevent fungal dysbiosis in roots.
Proc Natl Acad Sci U S A
December 2021
In nature, roots of healthy plants are colonized by multikingdom microbial communities that include bacteria, fungi, and oomycetes. A key question is how plants control the assembly of these diverse microbes in roots to maintain host-microbe homeostasis and health. Using microbiota reconstitution experiments with a set of immunocompromised mutants and a multikingdom synthetic microbial community (SynCom) representative of the natural root microbiota, we observed that microbiota-mediated plant growth promotion was abolished in most of the tested immunocompromised mutants.
View Article and Find Full Text PDFBidirectional root-shoot signalling is probably key in orchestrating stress responses and ensuring plant survival. Here, we show that Arabidopsis thaliana responses to microbial root commensals and light are interconnected along a microbiota-root-shoot axis. Microbiota and light manipulation experiments in a gnotobiotic plant system reveal that low photosynthetically active radiation perceived by leaves induces long-distance modulation of root bacterial communities but not fungal or oomycete communities.
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