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Related to Guttation: Hydathodes


The discharge of water from a plant surface, especially from a hydathode.



the exudation of water droplets by plant leaves, occurring when more water is absorbed by the roots than is evaporated by the leaves. It is observed mainly at night, in the early morning, or when plants are placed in a humid atmosphere; it is often observed in young sprouts, such as those of grains, whose root-system development overtakes the development of the evaporative surfaces of their leaves. The drops of water are secreted through water stomata under the action of root pressure, by the force of water pressing into the stems and leaves. Guttation is a physiological process connected with the life processes of the plant; if wheat sprouts are placed under a cone inside of which there is chloroform vapor, guttation ceases. Secretions of guttation always contain a number of mineral substances. Evidently guttation rids the plant of excess salts, mainly calcium.

References in periodicals archive ?
in the guttation fluid that are also transported to the sites of active
view of significance of guttation in transport of nutrients, water,
al, 2005); unlocking and understanding the mystery of guttation is
integrated view of the mechanism of guttation and its regulation.
The mode of guttation constitutes the sequence of events of sap
culminating into exudation from hydathodes in liquid form as guttation.
Guttation is found to occur in plants mostly in well
process of guttation takes place due to root pressure (Singh &
and necessary requirement for guttation to occur as the sap has to
Compostion of guttation fluid from rye, wheat and barley seedlings.
The importance of guttation fluid on turf diseases, p.