pericycle

(redirected from pericyclic)
Also found in: Dictionary, Encyclopedia.

pericycle

the layer of plant cells between the ENDODERMIS and the PHLOEM, consisting mainly of PARENCHYMA, which becomes meristematic to form lateral roots. See STEM and ROOT for diagrams.
References in periodicals archive ?
Lignified pericyclic cells are interspersed by two-three layers of thin-walled cells, located towards each of the nine protoxylem poles.
Countless reactions have been performed using a wide range of soluble nucleophiles, including aldol condensations, Michael additions, homoenolate reactions, pericyclic reactions, and transesterification reactions.
Pericyclic reactions are one of the classic examples taught in photochemistry courses, but all the chromophores show specific reactions that could be exploited for synthetic purposes.
Low shrubs, stem lacking pericyclic sheath of fibers, with Calluna-type pith.
Coran's mechanism is based on a zinc mediated pericyclic reaction or `ene' reaction.
From the nodal area undergoing the tuberisation process (Figures 5-9), it was possible to observe that the swelling process of the rhizophore occurs through the meristematic activity of the axillary buds (Figures 5-7) and through divisions in the pericyclic cell layers underlying the endodermis, which can be recognised due to the parietal thickening in lipophilic and phenolic substances (Figures 8-9), near the bud.
Contributors, who are chemists and others from Europe, the US, and Asia, describe the physical and chemical properties of water; acid catalysis; metal-mediated C-C bond formations; pericyclic reactions; catalyzed reductions; oxidations; nucleophilic additions and substitutions; reactions in nearcritical water; biocatalysis; organic synthesis in aqueous suspension; and the chemical manufacturing industry perspective on the topic.
Barriault's research involves the development of novel strategies using tandem pericyclic reactions to construct complex bio-active natural products.
Pericyclic reactions, the third reaction mechanism are not common in this discussion.