Callus (cell biology) | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-01-19

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Callus_(cell_biology)


00:00:42 1 Callus induction and tissue culture
00:02:04 2 Morphology
00:02:43 3 Callus cells deaths
00:03:21 4 Uses
00:05:04 5 History
00:05:51 6 See also



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SUMMARY
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Plant callus (plural calluses or calli) is a growing mass of unorganized plant parenchyma cells. In living plants, callus cells are those cells that cover a plant wound. In biological research and biotechnology callus formation is induced from plant tissue samples (explants) after surface sterilization and plating onto tissue culture medium in vitro (in a closed culture vessel such as a Petri dish).    The culture medium is supplemented with plant growth regulators, such as auxins, cytokinins, and gibberellins, to initiate callus formation or somatic embryogenesis.  Callus initiation has been described for all major groups of land plants.