Protoderm


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Related to Protoderm: ground meristem

protoderm

[′prōd·ə‚dərm]
(botany)

Protoderm

 

the outer layer of cells of the apical meristem of the shoot and root. The epidermis of the shoot, the epiblem of the root, and, less often, several subepidermal tissues are differentiated from the protodermal cells.

References in periodicals archive ?
b Detail of meristematic stem apex, showing the upper portion of the meristem originating the protoderm (black arrow), the basal portion originating the medullary meristem (red star) and the lateral portions forming the peripheral meristem (red arrows).
In Figure 4 (i to vi), procambium, which will give rise to vascular bundles, is observed above the embryonic axis, passing through its lateral, distributing in an ordered way, as it distances from the embryonic axis, it follows branching, becoming peripheral near the protoderm, and remaining thus in all its distal region.
Initially, groups of protoderm cells of the stipule elongate anticlinally and form dense cytoplasm and large nuclei (Fig.
Within the transition zone tissue differentiation begins with the establishment of the primary histogenes, as are the protoderm, procambium, and the quickly extending groundhistogen (Sachs, 1991:131) which produce during further growth the final tissue organization of the adult vegetation body (final histogenesis: Hagemann 1999).
Hall) 8.00 Protoderm HA (Protameen) 1.00-2.00 Parsol 1789 (Roche) 2.00-3.00 Preregen (Pentapharm) 2.00-3.00 Hysol 1% (Pentapharm) 1.00-2.00 Silicon 345 2.00 Biopeptide E/L (Sederma) 1.00-2.00 Tyrostat-10 (Fytokem) 1.00 Green tea extract 8.00 Butylene glycol 2.00-3.00 Phenonip 1.00