Serendipita indica changes host sugar and defense status in Arabidopsis thaliana: cooperation or exploitation?

• DOI: 10.1007/s00425-021-03587-3
• Publication Date: 2021-02-23T10:03:21Z
• Authors: Michael W. Opitz; Roshanak Daneshkhah; Cindy Lorenz; Roland Ludwig; Siegrid Steinkellner; Krzysztof Wieczorek
• Keywords: Defence mechanisms; Carbohydrate Metabolism

Manipulation of sugar metabolism upon S. indica root colonization triggers changes in pools and defense responses A. thaliana. Serendipita is an endophytic fungus that establishes mutualistic relationships with many different plants including important crops as well the model plant Successful typically results growth promotion enhanced tolerance against various biotic abiotic stresses. The delivers phosphorus to host receives exchange carbohydrates. There are hints prefers hexoses, glucose, fructose, products saccharose cleavage driven by invertases (INVs) sucrose synthases (SUSs). Carbohydrate this interaction, however, remains still widely unexplored. Therefore, work, expression SUSs cytosolic INVs colonized were analyzed. Using sus1/2/3/4 cinv1/2 mutants importance these genes for induction proper was demonstrated. Furthermore, several defense-related marker both multiple comparison wild-type determined. Our show thaliana manipulates altering host's INV SUS modulates its favor. We conclude interaction thaliana-S. a balancing act between cooperation exploitation, which plays crucial role. Small mechanism can lead severe disruption resulting lack or altered rate.