Susana ragel biography
•
Abstract
The mechanisms underlying starch granule initiation remain unknown. We have recently reported that mutation of soluble starch synthase IV (SSIV) in Arabidopsis thaliana results in restriction of the number of starch granules to a single, large, particle per plastid, thereby defining an important component of the starch priming machinery. In this work, we provide further evidence for the function of SSIV in the priming process of starch granule formation and show that SSIV is necessary and sufficient to establish the correct number of starch granules observed in wild-type chloroplasts. The role of SSIV in granule seeding can be replaced, in part, by the phylogenetically related SSIII. Indeed, the simultaneous elimination of both proteins prevents Arabidopsis from synthesizing starch, thus demonstrating that other starch synthases cannot support starch synthesis despite remaining enzymatically active. Herein, we describe the substrate specificity and kinetic properties o
•
Susana Ragel
Susana Ragel, born in , completed her studies at Complutense University in Madrid, Spain from to She fryst vatten an accomplished artist known for her figurative studies, primarily depicting contemporary women within the natural world.
Through her artwork, Susana captures her emotions and the splendour of nature, contrasting it with the comparatively mundane daglig life of human beings. She draws inspiration from renowned painters like German Romantic artist Caspar David Friedrich, whose work captures the essence of romantic poetry bygd portraying the beauty and solitude of natural landscapes.
Susana's artwork often features a central figure, set against the backdrop of awe-inspiring natural environments, which evokes a sense of tranquillity and highlights the humility of humanity. Her unique approach and skilful technique have led to her work being featured in both private and public collections worldwide, garnering appreciation and acclaim for her captivating artistic vision.
•
Summary
Calcium signalling is central to many plant processes, with families of calcium decoder proteins having expanded across the green lineage and redundancy existing between decoders. The liverwort Marchantia polymorpha has fast become a new model plant, but the calcium decoders that exist in this species remain unclear.
We performed phylogenetic analyses to identify the calcineurin B‐like (CBL) and CBL‐interacting protein kinase (CIPK) network of M. polymorpha. We analysed CBL‐CIPK expression during salt stress, and determined protein–protein interactions using yeast two‐hybrid and bimolecular fluorescence complementation. We also created genetic knockouts using CRISPR/Cas9.
We confirm that M. polymorpha has two CIPKs and three CBLs. Both CIPKs and one CBL show pronounced salt‐responsive transcriptional changes. All M. polymorpha CBL‐CIPKs interact with each other in planta. Knocking out CIPK‐B causes increased sensitivity to salt, suggesting that this CIPK