Thidiazuron: a potent regulator of in vitro plant morphogenesis

TDZ (N-phenyl-N′-1,2,3-thidiazol-5-ylurea) is a substituted phenylurea compound which was developed for mechanized harvesting of cotton bolls and has now emerged as a highly efficacious bioregulant of morphogenesis in the tissue culture of many plant species. Application of TDZ induces a diverse arr...

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Veröffentlicht in:In vitro cellular & developmental biology. Plant 1998-10, Vol.34 (4), p.267-275
Hauptverfasser: Murthy, B.N.S. (University of Guelph, Ontario, Canada.), Murch, S.J, Saxena, P.K
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container_title In vitro cellular & developmental biology. Plant
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creator Murthy, B.N.S. (University of Guelph, Ontario, Canada.)
Murch, S.J
Saxena, P.K
description TDZ (N-phenyl-N′-1,2,3-thidiazol-5-ylurea) is a substituted phenylurea compound which was developed for mechanized harvesting of cotton bolls and has now emerged as a highly efficacious bioregulant of morphogenesis in the tissue culture of many plant species. Application of TDZ induces a diverse array of cultural responses ranging from induction of callus to formation of somatic embryos. TDZ exhibits the unique property of mimicking both auxin and cytokinin effects on growth and differentiation of cultured explants, although structurally it is different from either auxins or purine-based cytokinins. A number of physiological and biochemical events in cells are likely to be influenced by TDZ, but these may or may not be directly related to the induction of morphogenic responses, and hence, the mode of action of TDZ is unknown. However, the recent approaches applied to study the morphogenic events initiated by TDZ are clearly beginning to reveal the details of a variety of underlying mechanisms. Various reports indicate that TDZ may act through modulation of the endogenous plant growth regulators, either directly or as a result of induced stress. The other possibilities include the modification in cell membranes, energy levels, nutrient uptake, or nutrient assimilation. In this review, several of these possibilities are presented and discussed in light of recently published studies on characterization of TDZ-induced morphogenic effects.
doi_str_mv 10.1007/BF02822732
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A number of physiological and biochemical events in cells are likely to be influenced by TDZ, but these may or may not be directly related to the induction of morphogenic responses, and hence, the mode of action of TDZ is unknown. However, the recent approaches applied to study the morphogenic events initiated by TDZ are clearly beginning to reveal the details of a variety of underlying mechanisms. Various reports indicate that TDZ may act through modulation of the endogenous plant growth regulators, either directly or as a result of induced stress. The other possibilities include the modification in cell membranes, energy levels, nutrient uptake, or nutrient assimilation. 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Soil science and plant productions ; APTITUD REGENERATIVA ; APTITUDE A LA REGENERATION ; AUXINAS ; AUXINE ; AUXINS ; Biological and medical sciences ; Biotechnology ; CAL ; CALLO ; CALLUS ; CELL DIFFERENTIATION ; CELL MEMBRANES ; CHEMICAL STRUCTURE ; CHEMICOPHYSICAL PROPERTIES ; CITOQUININAS ; CRECIMIENTO ; CROISSANCE ; CULTIVO DE TEJIDOS ; CULTURE DE TISSU ; CYTOKININE ; CYTOKININS ; Developmental Biology/Morphogenesis ; DIFERENCIACION CELULAR ; DIFFERENCIATION CELLULAIRE ; Economic plant physiology ; EMBRIOGENESIS SOMATICA ; EMBRYOGENESE SOMATIQUE ; ENERGY METABOLISM ; Establishment of new cell lines, improvement of cultural methods, mass culture ; ESTRES ; ESTRUCTURA QUIMICA ; Eukaryotic cell cultures ; EXPLANT ; EXPLANTES ; EXPLANTS ; Fundamental and applied biological sciences. Psychology ; GROWTH ; Growth and development ; LITERATURE REVIEWS ; MEMBRANAS CELULARES ; MEMBRANE CELLULAIRE ; METABOLISME ENERGETIQUE ; METABOLISMO ENERGETICO ; Methods. Procedures. 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Soil science and plant productions</topic><topic>APTITUD REGENERATIVA</topic><topic>APTITUDE A LA REGENERATION</topic><topic>AUXINAS</topic><topic>AUXINE</topic><topic>AUXINS</topic><topic>Biological and medical sciences</topic><topic>Biotechnology</topic><topic>CAL</topic><topic>CALLO</topic><topic>CALLUS</topic><topic>CELL DIFFERENTIATION</topic><topic>CELL MEMBRANES</topic><topic>CHEMICAL STRUCTURE</topic><topic>CHEMICOPHYSICAL PROPERTIES</topic><topic>CITOQUININAS</topic><topic>CRECIMIENTO</topic><topic>CROISSANCE</topic><topic>CULTIVO DE TEJIDOS</topic><topic>CULTURE DE TISSU</topic><topic>CYTOKININE</topic><topic>CYTOKININS</topic><topic>Developmental Biology/Morphogenesis</topic><topic>DIFERENCIACION CELULAR</topic><topic>DIFFERENCIATION CELLULAIRE</topic><topic>Economic plant physiology</topic><topic>EMBRIOGENESIS SOMATICA</topic><topic>EMBRYOGENESE SOMATIQUE</topic><topic>ENERGY METABOLISM</topic><topic>Establishment of new cell lines, improvement of cultural methods, mass culture</topic><topic>ESTRES</topic><topic>ESTRUCTURA QUIMICA</topic><topic>Eukaryotic cell cultures</topic><topic>EXPLANT</topic><topic>EXPLANTES</topic><topic>EXPLANTS</topic><topic>Fundamental and applied biological sciences. 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subjects ABSORCION DE SUSTANCIAS NUTRITIVAS
ABSORPTION DE SUBSTANCES NUTRITIVES
Agronomy. Soil science and plant productions
APTITUD REGENERATIVA
APTITUDE A LA REGENERATION
AUXINAS
AUXINE
AUXINS
Biological and medical sciences
Biotechnology
CAL
CALLO
CALLUS
CELL DIFFERENTIATION
CELL MEMBRANES
CHEMICAL STRUCTURE
CHEMICOPHYSICAL PROPERTIES
CITOQUININAS
CRECIMIENTO
CROISSANCE
CULTIVO DE TEJIDOS
CULTURE DE TISSU
CYTOKININE
CYTOKININS
Developmental Biology/Morphogenesis
DIFERENCIACION CELULAR
DIFFERENCIATION CELLULAIRE
Economic plant physiology
EMBRIOGENESIS SOMATICA
EMBRYOGENESE SOMATIQUE
ENERGY METABOLISM
Establishment of new cell lines, improvement of cultural methods, mass culture
ESTRES
ESTRUCTURA QUIMICA
Eukaryotic cell cultures
EXPLANT
EXPLANTES
EXPLANTS
Fundamental and applied biological sciences. Psychology
GROWTH
Growth and development
LITERATURE REVIEWS
MEMBRANAS CELULARES
MEMBRANE CELLULAIRE
METABOLISME ENERGETIQUE
METABOLISMO ENERGETICO
Methods. Procedures. Technologies
MICROPROPAGACION
MICROPROPAGATION
MORFOGENESIS
MORPHOGENESE
MORPHOGENESIS
Morphogenesis, differentiation, rhizogenesis, tuberization. Senescence
NUTRIENT UPTAKE
Plant cells
Plant cells and fungal cells
Plant growth regulators
Plant tissues
Plants
PROPIEDADES FISICOQUIMICAS
PROPRIETE PHYSICOCHIMIQUE
REGENERATIVE ABILITY
Seedlings
SOMATIC EMBRYOGENESIS
STRESS
STRUCTURE CHIMIQUE
THIDIAZURON
TIDIAZURON
TISSUE CULTURE
title Thidiazuron: a potent regulator of in vitro plant morphogenesis
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