doi: 10.1126/science.159.3815.648.
Somatic reduction in cycads
- PMID: 17735993
- DOI: 10.1126/science.159.3815.648
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Somatic reduction in cycads
Science.
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Abstract
Recurrent somatic reduction is a normal ontogenetic process in apogeotropic roots of cycads, which develop into dichotomously branching coralloid masses. The reduced cells make up part of a ring of differentiated cortical tissue lying midway between the pericycle and the epidermis; they serve as fillers among the large cells and become charged with slime. The differentiated tissue is colonized by a species of blue-green algae.
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