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  2. Source–sink dynamics - Wikipedia

    en.wikipedia.org/wiki/Sourcesink_dynamics

    Sourcesink dynamics is a theoretical model used by ecologists to describe how variation in habitat quality may affect the population growth or decline of organisms.. Since quality is likely to vary among patches of habitat, it is important to consider how a low quality patch might affect a population.

  3. Photosynthate partitioning - Wikipedia

    en.wikipedia.org/wiki/Photosynthate_partitioning

    Many times sinks are the actively growing tissues of the plant while the sources are where sugars are produced by photosynthesis—the leaves of plants. Sugars are actively loaded into the phloem and moved by a positive pressure flow created by solute concentrations and turgor pressure between xylem and phloem vessel elements (specialized plant ...

  4. Pressure flow hypothesis - Wikipedia

    en.wikipedia.org/wiki/Pressure_Flow_Hypothesis

    A sugar source is any part of the plant that is producing or releasing sugar. During the plant's growth period, usually during the spring, storage organs such as the roots are sugar sources, and the plant's many growing areas are sugar sinks. After the growth period, when the meristems are dormant, the leaves are sources, and storage organs are ...

  5. Phloem - Wikipedia

    en.wikipedia.org/wiki/Phloem

    These sugars are transported to non-photosynthetic parts of the plant, such as the roots, or into storage structures, such as tubers or bulbs. [14] During the plant's growth period, usually during the spring, storage organs such as the roots are sugar sources, and the plant's many growing areas are sugar sinks. The movement in phloem is ...

  6. Phloem loading - Wikipedia

    en.wikipedia.org/wiki/Phloem_loading

    Phloem loading is the process of loading carbon into the phloem for transport to different 'sinks' in a plant. Sinks include metabolism, growth, storage, and other processes or organs that need carbon solutes to persist.

  7. Photoassimilate - Wikipedia

    en.wikipedia.org/wiki/Photoassimilate

    Photoassimilate movement through plants from "source to sink" using xylem and phloem is of biological significance. This movement is mimicked by many infectious particles - namely viroids - to accomplish long ranged movement and consequently infection of an entire plant.

  8. Plant root exudates - Wikipedia

    en.wikipedia.org/wiki/Plant_root_exudates

    Another claim asserts that plants are able to possibly adjust their source-sink allocation of resources and the process of exudation which promote positive effects for the plant's growth. Primary metabolites that are released into the soil by plants consist of: amino acids, organic acids and sugars.

  9. Biogeochemical cycle - Wikipedia

    en.wikipedia.org/wiki/Biogeochemical_cycle

    The source Q is the flux of material into the reservoir, and the sink S is the flux of material out of the reservoir. The budget is the check and balance of the sources and sinks affecting material turnover in a reservoir. The reservoir is in a steady state if Q = S, that is, if the sources balance the sinks and there is no change over time. [25]

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