What is an example of translocation in plants?
Translocation is a biological process that involves the movement of water and other soluble nutrients through the xylem and phloem from one part of the plant to another part of the plant. For example transportation of sucrose and amino acid, up and down the plant.
What is the process of translocation in plants?
The movement of sucrose and other substances like amino acids around a plant is called translocation . In general, this happens between where these substances are made (the sources) and where they are used or stored (the sinks): from sources in the root to sinks in the leaves in early spring time.
What is translocation of assimilates in plants?
The products of photosynthesis (mainly the sugar sucrose) are a major component of the substance found in the phloem, called assimilate. Ions, amino acids, certain hormones, and other molecules are also found in assimilate. The movement of assimilate is called translocation, or assimilate transport.
Which materials are translocated in the phloem?
Nutrients are translocated in the phloem as solutes in a solution called phloem sap. The predominant nutrients translocated are sugars, amino acids, and minerals, with sugar being the most concentrated solute in the phloem sap.
Why is translocation in plants important?
It is an important process in plants because the source of production i.e., the location of photosynthesis is not the same as the site at which nutrients are stored; as a result it is essential that the nutrients be moved throughout the plant via translocation otherwise the food produced in the leaves will not be able …
How Photosynthates water and nutrients are transported in plants?
Photosynthates (mainly sucrose) move from sources to sinks through the plant’s phloem. Sucrose is actively loaded into the sieve-tube elements of the phloem. The increased solute concentration causes water to move by osmosis from the xylem into the phloem.
What are plant assimilates?
In the process of photosynthesis, carbon dioxide (CO2) and water (H2O) are trans-formed into sugars or assimilates, with the help of energy from sunlight. These sugars can be used as building blocks for plant tissue production and to make new cells, for instance.
Where does translocation of assimilates occur?
Plant Physiology and Development From there, photoassimilates are translocated by the transport phloem, located in leaf major veins, petioles, stems, and roots, to be distributed between sink organs.
What are plant solutes?
Solute potential (Ψs), also called osmotic potential, is negative in a plant cell and zero in distilled water. Typical values for cell cytoplasm are –0.5 to –1.0 MPa. Solutes reduce water potential (resulting in a negative Ψw) by consuming some of the potential energy available in the water.
What are organic solutes in plants?
Cells of phloem contain large quantities of organic solutes mainly sugars such as sucrose in soluble form.