Sylvie Jolivet

keywords meiosis kinetochore centromere monopolar co-orientation cohesin deSUMOylase CENP-C Shugoshin Arabidopsis Introduction Meiosis halves the chromosome number by executing two rounds of division. Our understanding of how meiosis ensures that replicated chromosomes segregate together during one division and then divide during the next remains incomplete.1,2 The kinetochore is a large protein complex that enables microtubules to attach to chromosomes at the centromere.

Abstract In the present study, we analyzed the role played by the apoplast in the crosstalk between biotic and abiotic stress conditions. In particular, we studied the crosstalk between nitrogen (N) limitation and infection of the model plant Arabidopsis thaliana by E. amylovora, an apoplastic bacterium. Our previous findings indicated that low N (LN) conditions increase E. amylovora in planta titers and expression of virulence factors.

Abstract In this study, we investigated the intricate interplay between nitrogen nutrition, and the dynamics of pectin degradation during plant-pathogen interactions, using Arabidopsis thaliana and Botrytis cinerea as a model pathosystem. Our findings revealed a noteworthy impact of nitrogen availability on the pectin degrading activity of the B. cinerea pectin lyase 1 (PNL) for which the mutant strains presented a reduced pathogenicity restored by complementation.