Cell dynamics studies on the pericycle of radish seedling roots

Blakely, L. M.; Evans, Tony

doi:10.1016/0304-4211(79)90158-5

Cited by 75 publications

(36 citation statements)

References 4 publications

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“…Lateral roots originate in the root pericycle, in which individual quiescent cells are stimulated to dedifferentiate and proliferate to form the lateral root primordium (Blakely and Evans, 1979). Cells in the lateral root primordium differentiate and elongate, causing the lateral root to emerge through the primary root epidermis.…”

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confidence: 99%

Inhibition of Auxin Movement from the Shoot into the Root Inhibits Lateral Root Development in Arabidopsis

1998

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In roots two distinct polar movements of auxin have been reported that may control different developmental and growth events. To test the hypothesis that auxin derived from the shoot and transported toward the root controls lateral root development, the two polarities of auxin transport were uncoupled in Arabidopsis. Local application of the auxin-transport inhibitor naphthylphthalamic acid (NPA) at the root-shoot junction decreased the number and density of lateral roots and reduced the free indoleacetic acid (IAA) levels in the root and [ 3 H]IAA transport into the root. Application of NPA to the basal half of or at several positions along the root only reduced lateral root density in regions that were in contact with NPA or in regions apical to the site of application. Lateral root development was restored by application of IAA apical to NPA application. Lateral root development in Arabidopsis roots was also inhibited by excision of the shoot or dark growth and this inhibition was reversible by IAA. Together, these results are consistent with auxin transport from the shoot into the root controlling lateral root development.

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confidence: 99%

Inhibition of Auxin Movement from the Shoot into the Root Inhibits Lateral Root Development in Arabidopsis

1998

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“…Legume and actinorhizal nodules as well as lateral roots are predominantly formed opposite to protoxylem poles (Libbenga and Bogers, 1974;Callaham and Torrey, 1977;Blakely and Evans, 1979). This suggests that the stele provides positional information that controls which cells can be activated.…”

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confidence: 99%

Rhizobial and Actinorhizal Symbioses: What Are the Shared Features?

1996

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“…Les arrêts en G 2 sont moins répandus. Ils ont été notés pour un certain pourcentage de noyaux dans le méristème racinaire enbryonnaire de quelques espèces (Pisum, Triticum, Vicia) (Rost, 1976), parfois en réponse à la trigonelline, substance hormonale émise par les cotylédons (Evans et coll., 1979 ;Evans et Tramontano, 1981 ), au niveau du péricycle de certaines racines (Blakely et Evans, 1979), dans la suspension cellulaire de Soja privée de cytokinine (Fosket et Tepfer, 1978) ou dans les cellules différenciées des pétales de certains clones de Tradescantia (Kudirka et Van't Hof, 1980). G/ Origine de la zonation physiologique du point végétatif Rembur (1970Rembur ( , 1978 a recherché l'origine de la zonation physiologique du point végétatif.…”

Section: Matérielunclassified

Le point végétatif en tant que modèle pour l'étude du cycle cellulaire et de ses points de contrôle

Nougarède

Rembur

1985

Bulletin de la Société Botanique de France. Actualités Botaniqu

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Après traitement colchicinique et double marquage, utilisé en liaison avec la microdensitométrie de l'ADN, la durée du cycle cellulaire et celle de ses phases ont été déterminées. Dans la zone axiale, la durée du cycle cellulaire est 2, 6 fois plus longue que dans la zone latérale, les cellules du méristème médullaire se divisant à un taux intermédi:rire. L'index mitotique est validé en tant qu'in-

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Cell dynamics studies on the pericycle of radish seedling roots

Cited by 75 publications

References 4 publications

Inhibition of Auxin Movement from the Shoot into the Root Inhibits Lateral Root Development in Arabidopsis

Inhibition of Auxin Movement from the Shoot into the Root Inhibits Lateral Root Development in Arabidopsis

Rhizobial and Actinorhizal Symbioses: What Are the Shared Features?

Le point végétatif en tant que modèle pour l'étude du cycle cellulaire et de ses points de contrôle

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