Have you ever wondered: • How plant cell wall polysaccharides can be remodelled by wall-bound proteins? • How polysaccharides can be tagged and tracked? • Whether green algae can “borrow” others species‘ polysaccharides? • How such processes can be exploited in a biotechnological context? These questions concerning ongoing research in our group will be tackled in the lecture “Cell walls and their remodelling in streptophyte green algae and land plants”.