The glycosylation of proteins via 04 atom of hydroxyproline to form O4-glycosyl-L-hydroxyproline; the most common form is arabinofuranosyl-4-proline.

The chemical reactions and pathways involving a cell wall arabinogalactan II glycoprotein, which is composed of a group of core protein of highly varying length and domain complexity. These are O-glycosylated at one or more hydroxyproline residues by arabinogalactan (AG) type II groups, which consist of (1->3)-beta-galactan and (1->6)-beta-linked galactan chains connected to each other by (1->3,1->6)-linked branch points, O-3 and O-6 positions substituted with terminal arabinosyl residues. Also, rhamnose, fucose, glucuronic and galacturonic acid can be present in the glycan structures.

The process whose specific outcome is the progression of a root hair cell over time, from its formation to the mature state.

The chemical reactions and pathways resulting in the formation of mucilage that occur as part of seed coat development; mucilage is normally synthesized during seed coat development.

Any process that stops, prevents or reduces the frequency, rate or extent of leaf senescence.

The chemical reactions and pathways involving a cell wall arabinogalactan II glycoprotein, which is composed of a group of core protein of highly varying length and domain complexity. These are O-glycosylated at one or more hydroxyproline residues by arabinogalactan (AG) type II groups, which consist of (1->3)-beta-galactan and (1->6)-beta-linked galactan chains connected to each other by (1->3,1->6)-linked branch points, O-3 and O-6 positions substituted with terminal arabinosyl residues. Also, rhamnose, fucose, glucuronic and galacturonic acid can be present in the glycan structures.

A compound membranous cytoplasmic organelle of eukaryotic cells, consisting of flattened, ribosome-free vesicles arranged in a more or less regular stack. The Golgi apparatus differs from the endoplasmic reticulum in often having slightly thicker membranes, appearing in sections as a characteristic shallow semicircle so that the convex side (cis or entry face) abuts the endoplasmic reticulum, secretory vesicles emerging from the concave side (trans or exit face). In vertebrate cells there is usually one such organelle, while in invertebrates and plants, where they are known usually as dictyosomes, there may be several scattered in the cytoplasm. The Golgi apparatus processes proteins produced on the ribosomes of the rough endoplasmic reticulum; such processing includes modification of the core oligosaccharides of glycoproteins, and the sorting and packaging of proteins for transport to a variety of cellular locations. Three different regions of the Golgi are now recognized both in terms of structure and function: cis, in the vicinity of the cis face, trans, in the vicinity of the trans face, and medial, lying between the cis and trans regions.

The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).

A chlorophyll-containing plastid with thylakoids organized into grana and frets, or stroma thylakoids, and embedded in a stroma.

A vacuole to which materials ingested by endocytosis are delivered.

The network of interconnected tubular and cisternal structures located within the Golgi apparatus on the side distal to the endoplasmic reticulum, from which secretory vesicles emerge. The trans-Golgi network is important in the later stages of protein secretion where it is thought to play a key role in the sorting and targeting of secreted proteins to the correct destination.

A collection of membranous structures involved in transport within the cell. The main components of the endomembrane system are endoplasmic reticulum, Golgi bodies, vesicles, cell membrane and nuclear envelope. Members of the endomembrane system pass materials through each other or though the use of vesicles.