strigolactonesreleased

Strigolactones released refers to the process by which plants secrete strigolactones into their environment. Strigolactones are a class of plant hormones that play a crucial role in various developmental processes. Their release from the plant roots is a key mechanism for intercellular and inter-organismal communication.

The release of strigolactones is influenced by several factors, including nutrient availability, particularly phosphate and nitrogen. When plants experience nutrient deficiency, they tend to increase the production and release of strigolactones. This release is an active process, involving specific transport proteins located in the root plasma membrane.

Once released into the rhizosphere, strigolactones can act as signaling molecules. They influence root architecture by inhibiting the elongation of primary roots and promoting the formation of lateral and adventitious roots. This altered root growth helps the plant explore the soil more effectively for nutrients.

Furthermore, strigolactones released from plant roots can also affect other organisms. They are known to stimulate the germination of arbuscular mycorrhizal fungi spores, forming a symbiotic relationship that benefits the plant by enhancing nutrient uptake. Conversely, strigolactones can also inhibit the germination of parasitic plant seeds, such as those of Striga and Orobanche, acting as a defense mechanism. The precise mechanisms governing the release and transport of strigolactones are areas of ongoing research.