Aleurone layer | definition of aleurone layer by Medical dictionary
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aleurone layer a layer of cells just below the TESTA of seeds such as barley. Aleurone releases large quantities of hydrolytic enzymes (AMYLASES, PROTEASES and NUCLEASES) for digestion of the ENDOSPERM. Thus food material is made available in soluble form for embryo growth. Enzyme release is brought on by the plant hormone GIBBERELLIN, which is released by the embryo when the seed is soaked in water prior to germination.
References in periodicals archive
Soon the bran was also screened out, along with the aleurone layer
, and eventually the remaining powder was bleached to make it even whiter.
2002) GA-induced programmed cell death was delayed in aleurone layers in the presence of NO in barley plants that associated with a loss of activity of catalase and superoxide dismutase (SOD).
Nitric oxide acts as an antioxidant and delays programmed cell death in barley aleurone layers.