👉 A subulona is a type of cell wall in plants, consisting of two layers with different cell walls. The innermost layer, called the pith, is composed primarily of xylan and other plant polysaccharides, while the outer layer is composed of cellulose and lignin. Subulonas play an important role in the structure of plant cells, as they help to support the plant's internal tissues and protect them from damage by pathogens or external stimuli.
