Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a reactive oxygen species stimulus. Reactive oxygen species include singlet oxygen, superoxide, and oxygen free radicals.

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of oxidative stress, a state often resulting from exposure to high levels of reactive oxygen species, e.g. superoxide anions, hydrogen peroxide (H2O2), and hydroxyl radicals.

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an oxygen-containing compound stimulus.

The process that mediates signaling interactions between one cell and another cell by transfer of current between their adjacent cytoplasms via intercellular protein channels.

Any process that modulates the frequency, rate or extent of cell communication via chemical coupling. Cell communication by chemical coupling is the process that mediates signaling interactions between one cell and another cell by the transfer of small, water-soluble molecules or metabolites between their adjacent cytoplasms via intercellular protein channels.

Binding to a tetrahydrobiopterin, 5,6,7,8-tetrahydrobiopterin or a derivative thereof; tetrahydrobiopterins are enzyme cofactors that carry electrons in redox reactions.

Binding to 2-amino-5-(carbamimidamido)pentanoic acid.

Binding to an amino acid, organic acids containing one or more amino substituents.

Binding to a carboxylic acid, an organic acid containing one or more carboxyl (COOH) groups or anions (COO-).

Any process that decreases the frequency, rate or extent of cell communication via electrical coupling. Cell communication via electrical coupling is the process that mediates signaling interactions between one cell and another cell by transfer of current between their adjacent cytoplasms via intercellular protein channels.

A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of an etioplast. An etioplast is a plastid arrested in the development of chloroplasts from proplastids due to absence of light or low light conditions.

Any process that increases the frequency, rate or extent of cell communication via chemical coupling. Cell communication by chemical coupling is the process that mediates signaling interactions between one cell and another cell by the transfer of small, water-soluble molecules or metabolites between their adjacent cytoplasms via intercellular protein channels.

A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of a plasmodesma, a fine cytoplasmic channel, found in all higher plants, that connects the cytoplasm of one cell to that of an adjacent cell.

A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of a cell-cell junction. A cell-cell junction is a specialized region of connection between two cells.

A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of an amyloplast. An amyloplast is a plastid whose main function is to synthesize and store starch.

Any process that decreases the frequency, rate or extent of cell communication via chemical coupling. Cell communication by chemical coupling is the process that mediates signaling interactions between one cell and another cell by the transfer of small, water-soluble molecules or metabolites between their adjacent cytoplasms via intercellular protein channels.

A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of the chromoplast. A chromoplast is a plastid containing pigments other than chlorophyll, usually yellow and orange carotenoid pigments.

The process in which the developmental fate of a cell becomes restricted such that it will develop into an apical cell. The apical cell is the upper cell formed after the first division of the zygote.

The commitment of cells to specific cell fates and their capacity to differentiate into particular kinds of cells. Positional information is established through protein signals that emanate from a localized source within a cell (the initial one-cell zygote) or within a developmental field.