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ROOT ACTIVITY [9 records]

Record 1 2024-09-17

English

Subject field(s)
  • Chemical Elements and Compounds
  • Pharmacology
Universal entry(ies)
CONT

Pelletierine is an alkaloid found in the root bark of the pomegranate tree. There is little information about the pharmacological application of this compound, but one article describes the anthelminthic activity of pelletierine.

French

Domaine(s)
  • Éléments et composés chimiques
  • Pharmacologie
Entrée(s) universelle(s)
OBS

Alcaloïde présent dans l'écorce de la racine de grenadier.

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
  • Farmacología
Entrada(s) universal(es)
Save record 1

Record 2 2022-07-13

English

Subject field(s)
  • Anti-pollution Measures
  • Biotechnology
DEF

The breakdown of contaminants in the soil through microbial activity that is enhanced by the presence of the rhizosphere [root zone].

CONT

Rhizodegradation ... is a much slower process than phytodegradation. Microorganisms (yeast, fungi, or bacteria) consume and digest organic substances for nutrition and energy. Certain microorganisms can digest organic substances such as fuels or solvents that are hazardous to humans and break them down into harmless products through biodegradation. Natural substances released by the plant roots -sugars, alcohols, and acids- contain organic carbon that provides food for soil microorganisms, and the additional nutrients enhance their activity.

Key term(s)
  • rhizo-degradation
  • rhizo degradation

French

Domaine(s)
  • Mesures antipollution
  • Biotechnologie
DEF

Dégradation des polluants par les racines (processus internes) et par l'activité microbienne associée (processus externes).

OBS

[...] les plantes stimulent la croissance de micro-organismes aux alentours de leurs racines (zone appelée rhizosphère) par la sécrétion de substances naturelles.

Spanish

Save record 2

Record 3 2014-08-25

English

Subject field(s)
  • Plant Biology
CONT

Natural root grafts are common in trees and occur when thick underground roots are pressed together because of their cambial activity and the cambia come into contact after the pressure crushes the soft cortex.

French

Domaine(s)
  • Biologie végétale
CONT

Chez Pinus sylvestris, nous avons pu observer un cas de soudure racinaire entre le pivot d'un jeune plant et une racine superficielle d'un sujet adulte.

Spanish

Save record 3

Record 4 2013-05-01

English

Subject field(s)
  • Plant Biology
  • Botany
DEF

A root system in which both primary and lateral roots are finely divided and have approximately equal diameters, without evident thickening or an enlarged central root.

CONT

A fibrous root system is one in which the primary root ceases to elongate, leading to the development of numerous lateral roots... A fibrous root is one which remains small in diameter because of a lack of significant cambial activity.

Key term(s)
  • heartroot system

French

Domaine(s)
  • Biologie végétale
  • Botanique
DEF

[Système racinaire sans pivot] composé de nombreuses racines de même importance disposées en faisceau [et qui] possèdent une origine commune.

CONT

Les graminées possèdent le système fasciculé le plus dense, ce qui explique leur choix fréquent dans les expériences de phytoremédiation des hydrocarbures aromatiques polycycliques (HAP).

Spanish

Save record 4

Record 5 2011-09-14

English

Subject field(s)
  • Soil Science
  • Plant Biology
  • Silviculture
DEF

The soil immediately surrounding the root system of a plant.

CONT

The soil-plant system is one of the most important components in agricultural and natural ecosystems. Nutrient dynamics in soil-plant systems not only reflect the pattern of nutrient flow but also influence food production and quality, and the contaminant pathways in agricultural and natural ecosystems. In soil-plant systems, interaction between nutrients occur when the supply of one nutrient affects the movement, absorption, or utilization of an nutrient within the soil, soil-root interface (rhizosphere), or plant. There are several mechanisms of nutrient interaction in soil-plany systems.

OBS

The zone of rooting medium in which the environment for microbial activity in general is influenced by any root growing in it, distinguishing it from the "bulk" or "non-rhizosphere" soil, which is influenced by growing roots only by the withdrawal of water and nutrients.

Key term(s)
  • soil root interface

French

Domaine(s)
  • Science du sol
  • Biologie végétale
  • Sylviculture
DEF

Partie du sol pénétrée par les racines des plantes, très riche en micro-organismes et en substances biologiques.

CONT

L'horizon du sol dans lequel se développent les racines des plantes est la zone racinaire.

CONT

Étude structurale et fonctionnelle de la rhizosphère : description du système racinaire et de l'interface sol-racine, mécanismes physicochimiques et biophysiques impliqués, interactions microorganismes-racines.

OBS

La rhizosphère de chaque espèce végétale a une flore spécifique (bactéries, champignons).

Key term(s)
  • interface sol racine

Spanish

Campo(s) temático(s)
  • Ciencia del suelo
  • Biología vegetal
  • Silvicultura
DEF

Parte del suelo ocupada por raíces.

Save record 5

Record 6 2007-08-29

English

Subject field(s)
  • Plant Biology
CONT

Nutrient uptake by crops depends on nutrient supply in the soil, root surface area, and root activity. Roots are able to absorb only the nutrients that come into contact with living and active cells, so P uptake is dependent on the condition of a plant's root system. Nutrients contact the root surface by three mechanisms : diffusion, mass/bulk flow, and root interception.

French

Domaine(s)
  • Biologie végétale
CONT

La surface racinaire constitue un objet d'étude primordial à plus d'un titre; elle constitue un interface original non seulement par ses propriétés intrinsèques (encore mal connues), mais par les processus qui s'y développent : transfert (eau, ions), échange d'informations (molécules-signal), régénération et développement spatial, biofilms.

Spanish

Save record 6

Record 7 2002-01-29

English

Subject field(s)
  • Soil Science
  • Air Pollution
DEF

measure of the alkalinity of atmospheric fallout (pollutants), i.e. low lime potential means more acidity.

OBS

The negative logarithm of the ratio of the hydrogen ion activity to the square root of the sum of the activities of calcium and magnesium in the soil solution.

French

Domaine(s)
  • Science du sol
  • Pollution de l'air
OBS

Logarithme négatif du rapport de l'activité ionique de l'hydrogène à la racine carrée de la somme des activités des ions de calcium et de magnésium de la solution du sol.

Spanish

Campo(s) temático(s)
  • Ciencia del suelo
  • Contaminación del aire
Save record 7

Record 8 2001-05-01

English

Subject field(s)
  • Areal Planning (Urban Studies)
  • Silviculture
DEF

A guideline for protecting individual trees during building construction by not allowing any activity within the critical root zone.

OBS

Urban forestry.

French

Domaine(s)
  • Aménagement du territoire
  • Sylviculture
DEF

En foresterie urbaine, lignes directrices visant à protéger les arbres et qui doivent être observées lors de la construction de bâtiments afin d'éviter tout contact avec les racines.

Spanish

Save record 8

Record 9 2001-01-29

English

Subject field(s)
  • Pharmacology
CONT

Parsley. Medicinally, the two-year-old roots are employed, also the leaves, dried, for making Parsley Tea, and the seeds, for the extraction of an oil called Apiol, which is of considerable curative value... Parsley fruit or 'seeds’ contain the volatile oil in larger proportion than the root(2. 6 per cent) ;it consists of terpenes and Apiol, to which the activity of the fruit is due. There are also present fixed oil, resin, Apiin, mucilage and ash. Apiol is an oily, nonnitrogenous allyl compound, insoluble in water, soluble in alcohol and crystallizable when pure into white needles. The British Pharmacopeia directs that Apiol be prepared by extracting the bruised fresh fruits with ether and distilling the solvent. The residue is the commercial liquid Apiol. It exercises all the virtues of the entire plant.

French

Domaine(s)
  • Pharmacologie
DEF

Principe actif des graines de persil ayant des propriétés emménagogues et fébrifuges.

CONT

Persil. [...] En effet, cette plante facilite l'évacuation des toxines présentes dans les articulations enflammées puis leur élimination par les reins. On utilise plus volontiers la racine du persil que ses graines ou ses feuilles. On la prescrit contre les flatulences, la cystite et les rhumatismes. Le persil facilite l'arrivée des règles et soulage les douleurs menstruelles. Les flavonoïdes qu'il contient sont anti-inflammatoires et antioxydants, alors que la myristicine et l'apiol sont diurétiques.

OBS

On désigne, sous le même nom, l'essence de fruit de persil, son extrait alcoolique et l'apiol cristallisé ou camphre de persil.

Spanish

Campo(s) temático(s)
  • Farmacología
Save record 9

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