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WOUND RESPONSE [5 records]

Record 1 2024-06-25

English

Subject field(s)
  • Maple Syrup Production
CONT

Each year, tapping for sap collection not only permanently removes a small amount of wood from the taphole itself, but, in addition, the tree's response to the taphole wound generates a ’'stained’’ column of wood extending above and below the taphole that remains permanently nonconductive to sap …

Key term(s)
  • tap hole wound

French

Domaine(s)
  • Acériculture
CONT

L'utilisation d'un chalumeau de petit diamètre augmente de façon significative le taux de cicatrisation de la blessure d'entaille même après seulement une saison de croissance.

Spanish

Save record 1

Record 2 2022-02-24

English

Subject field(s)
  • Biochemistry
  • Living Matter - General Properties
DEF

Systemin is a plant peptide hormone involved in the wound response in the family Solanaceae. It was the first plant hormone that was proven to be a peptide having been isolated from tomato leaves in 1991 by a group led by Clarence A. Ryan.

French

Domaine(s)
  • Biochimie
  • Propriétés générales de la matière vivante
DEF

Polypeptide produit par les feuilles après une blessure et véhiculé par la sève, qui stimule la synthèse d'acide jasmonique et de protéines inhibitrices de protéases.

CONT

C. Ryan et ses collègues ont isolé une protéine, la systémine, à partir de feuilles de tomate. Elle joue un rôle essentiel dans l'induction des défenses actives des plantes contre les insectes.

OBS

Une fois stimulées par la systémine, les protéines inhibitrices de protéases empêchent l'assimilation des protéines végétales par les insectes phytophages.

OBS

systémine : désignation et définition publiées au Journal officiel de la République française le 12 septembre 2019.

Spanish

Save record 2

Record 3 2012-10-22

English

Subject field(s)
  • Plant Biology
  • Biotechnology
DEF

An unorganized, proliferative mass of undifferentiated plant cells; a wound response.

OBS

In tissue culture, callus formation from explants is occasionally spontaneous, representing an extension of the wound reaction, but to come about generally requires an auxin in the medium often, in combination with a cytokinin.

French

Domaine(s)
  • Biologie végétale
  • Biotechnologie
DEF

Masse formée par le développement explosif et inorganisé de nombreuses cellules indifférenciées (dans les techniques de micropropagation des plantes). [définition normalisée par l'AFNOR.]

OBS

cal : terme normalisé par l'AFNOR.

Spanish

Campo(s) temático(s)
  • Biología vegetal
  • Biotecnología
DEF

Masa no organizada de células diferenciadas y no diferenciadas que se divide activamente a consecuencia de una herida o bien en un cultivo de tejido mantenido en un medio provisto de factores de crecimiento.

Save record 3

Record 4 2010-05-10

English

Subject field(s)
  • Weather Stations and Meteorological Instruments and Equipment
  • Scientific Instruments
CONT

Eppley Precision Spectral Pyranometer, PSP. This instrument is considered to be the most accurate radiometer produced commercially for the measurement of global sun and sky radiation, totally or in defined wavelength bands. It can be inverted to measure reflected shortwave radiation(from which the albedo can be calculated). The PSP has a circular multi-junction thermopile of the plated(copper-constantan) wire wound type which is temperature compensated in order to get a response that is independent of ambient temperature. The temperature sensed by the detector is nearly linear with the flux density of incident radiation. The instrument is supplied with a pair of removable precision ground and polished concentric hemispheres of Schott optical glass. The inner hemisphere is transparent to a wavelength of 0. 285-2. 800 µm. The outer dome can be replaced by Schott glass hemispherical filters which transmit within specified bandwidths. Desiccant is placed in the side of the instrument to absorb humidity inside the glass domes. Measurements are reported in Wm-2.

CONT

The Eppley PSP (or simply Eppley Pyranometer) is an instrument for the measurement of radiation in the range approximately between 285 and 2800 nm. As noted earlier, this wavelength range is commonly referred to as shortwave radiation, and it’s primary source is the sun.

French

Domaine(s)
  • Stations, instruments et équipements météorologiques
  • Instruments scientifiques
CONT

Les capteurs de rayonnement permettent la mesure des flux sous un angle solide 2[pi] vers le haut et vers le bas dans quatre bandes spectrales : deux pyranomètres Eppley PSP -- visible -- haut et bas; deux pyranomètres Eppley PSP -- visible rouge -- haut et bas; deux pyranomètres Eppley PIR -- infrarouge -- haut et bas; deux photomètres Eppley UVR -- ultraviolet -- haut et bas.

Spanish

Save record 4

Record 5 1999-03-05

English

Subject field(s)
  • Raw Materials (Rubber)
CONT

In a rubber tree which is being tapped for the first time there is a high percentage of rubber in the latex(about 60% as against the normal 30%) and only a low yield is obtained. As tapping is continued the latex becomes more dilute and a higher yield is given. This phenomenon is known as wound response.

French

Domaine(s)
  • Matières premières (Caoutchouc)
Key term(s)
  • réponse à la blessure

Spanish

Campo(s) temático(s)
  • Materias primas (Caucho)
Save record 5

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