The orientation of plant parts towards gravity.

The process whose specific outcome is the progression of the flower over time, from its formation to the mature structure. The flower is the reproductive structure in a plant, and its development begins with the transition of the vegetative or inflorescence meristem into a floral meristem.

Any process that activates or increases the frequency, rate or extent of flower development.

The process whose specific outcome is the progression of an inflorescence over time, from its formation to the mature structure.

The unidirectional movement of auxin from the apex to base of an organ, including the shoot, leaf, primary root, or lateral root.

Any process in which a protein is transported to, or maintained in, apical regions of the cell.

The process whose specific outcome is the progression of the cotyledon over time, from its formation to the mature structure. The cotyledon is the modified leaf (seed leaf), found as part of the embryo in plant seeds. It is involved in either storage or absorption of food reserves. Dicotyledonous seeds contain two cotyledons, while monocotyledonous seeds contain only one. The cotyledons may appear above ground and show photosynthetic activity in the seedling.

The process whose specific outcome is the progression of a phyllome over time, from its formation to the mature structure. A phyllome is a collective term for all the different types of leaves appearing on plants.

The part of a cell encompassing the cell cortex, the plasma membrane, and any external encapsulating structures.

The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

A prelysosomal endocytic organelle differentiated from early endosomes by lower lumenal pH and different protein composition. Late endosomes are more spherical than early endosomes and are mostly juxtanuclear, being concentrated near the microtubule organizing center.