Specialized zones of development in roots

• Published in: Plant physiology (Bethesda) 1995-11, Vol.109 (3), p.725-727
• Main Authors: Ishikawa, H. (Ohio State University, Columbus, OH.), Evans, M.L
• Format: Article
• Language: English
• Subjects: AIA; ANATOMIA DE LA PLANTA; ANATOMIE VEGETALE; Auxins; Biological and medical sciences; CAMPO ELECTRICO; CELL CYCLE; CELL DIFFERENTIATION; CELL DIVISION; Cell growth; Cell physiology; CELLS; CELLULE; CELULAS; CHAMP ELECTRIQUE; CHEMICOPHYSICAL PROPERTIES; Corn; CRECIMIENTO; CROISSANCE; Curvature; DIFERENCIACION CELULAR; DIFFERENCIATION CELLULAIRE; distal elongation zone; DIVISION CELLULAIRE; DIVISION CELULAR; ELECTRIC FIELD; Electric Stimulation; ESTIMULO; ETAPAS DE DESARROLLO DE LA PLANTA; EXPRESION GENICA; EXPRESSION DES GENES; Fundamental and applied biological sciences. Psychology; GENE EXPRESSION; GEOTROPISM; Gravitation; GROWTH; GROWTH INHIBITORS; GROWTH RATE; IAA; INDICE DE CRECIMIENTO; Indoleacetic Acids - pharmacology; INHIBIDORES DEL CRECIMIENTO; INHIBITEUR DE CROISSANCE; Life Sciences (General); Meristem - genetics; Meristem - growth & development; Meristem - physiology; MITOSE; MITOSIS; Physical Stimulation; PLANT ANATOMY; PLANT DEVELOPMENTAL STAGES; Plant Growth Regulators - pharmacology; Plant growth. Development of the storage organs; Plant physiology and development; Plant Root Cap - genetics; Plant Root Cap - growth & development; Plant Root Cap - physiology; Plant roots; Plant Roots - cytology; Plant Roots - drug effects; Plant Roots - genetics; Plant Roots - growth & development; Plants; PRIVACION DEL AGUA; PRIVATION D'EAU; PROPIEDADES FISICO-QUIMICAS; PROPRIETE PHYSICOCHIMIQUE; RACINE; RAICES; ROOTS; Space life sciences; STADE DE DEVELOPPEMENT VEGETAL; STIMULI; STIMULUS; TAUX DE CROISSANCE; THIGMOTROPISM; TROPISME; TROPISMO; TROPISMS; Vegetative apparatus, growth and morphogenesis. Senescence; Viewpoints; Water; WATER DEPRIVATION; Zea mays
• ISSN: 0032-0889; 1532-2548
• DOI: 10.1104/pp.109.3.725

The authors propose using the term "distal elongation zone" (DEZ) rather than "postmitotic isodiametric growth zone" to refer to the group of cells between the apical meristem and the elongation zone in plant roots. Reasons presented for the change are that the proposed DEZ includes many cells that are still dividing, most cells in the region are not isodiametric, and the pattern of cell expansion in this region varies with position in the region. Cells in the DEZ respond to gravistimulation, mechanical impedance, electrotropic stimulation, water stress, and auxin. Differences in gene expression patterns between DEZ cells and cells in the main elongation zone are noted.