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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.
callus, In botany, soft tissue that forms over a wounded or cut plant surface, leading to healing. A callus arises from cells of the cambium. When a callus forms, some of its cells may organize into growing points, some of which in turn give rise to roots while others produce stems and leaves.
27 wrz 2013 · “Callus” in the early days of plant biology referred to the massive growth of cells and accumulation of callose associated with wounding. Today the same word is used more broadly, and disorganized cell masses are collectively called callus.
23 kwi 2024 · Callus culture is a well-established technique for in vitro manipulation of plant cells. Specifically, it involves the induction of dedifferentiation in plant explants, typically leaves, on culture media supplemented with high auxin concentrations or a combination of auxin and cytokinin.
25 kwi 2019 · Recent findings call for the critical overview of some incorrectly used plant cell and tissue culture terminology such as dedifferentiation, callus, totipotency, and somatic embryogenesis. Plant cell and tissue culture methods are efficient means to preserve and propagate genotypes with superior germplasm as well as to increase genetic ...
callus. 1. A mass of parenchymatous cells that forms at a wounded surface, for example where a branch has been cut off a tree. The callus tissue is produced by the cambium and initially forms a ring of thickening (wound wood) around the wound. Eventually it may completely cover the exposed wood.
Meaning of Callus Culture: Callus is formed by the proliferation of the parent tissue. The cells of a callus are parenchymatous, amorphous and unorganised. Generally callus is formed as a result of injury at the cut ends of a stem or a root. Localised centres of activity is recorded in a callus.
