substrate
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substrate
The material base on or in which an organism (plant, fungus, bacterium) lives, grows, or from which it feeds. This can be, for example, soil, rock, wood, or a special nutrient medium in a laboratory.
Für Orchideen verwendet man ein spezielles Substrat aus Rinde und Moos.
For orchids, people use a special substrate made of bark and moss.
The word comes from the Latin 'substratum', meaning 'that which is laid underneath'. This basic idea of a base or foundation connects all meanings: the soil for a plant, the starting substance for a reaction, or the old language for a new one.
Die Forscher analysierten das Substrat, auf dem die seltenen Flechten wuchsen.
The researchers analyzed the substrate on which the rare lichens were growing.
'Substrat' (substrate) is a technical term from science. It is hardly used in normal everyday life. You mainly encounter it in texts from biology, chemistry, linguistics, or philosophy.
Im Biologieunterricht lernten wir, wie man ein Nährsubstrat für Bakterienkulturen herstellt.
In biology class, we learned how to make a nutrient substrate for bacterial cultures.
You can always recognize the exact meaning of 'Substrat' (substrate) from the context. Words like 'Pflanze' (plant), 'wachsen' (to grow), or 'Erde' (soil) point to the biological meaning. Terms like 'Enzym' (enzyme) or 'Reaktion' (reaction) indicate biochemistry.
Jede Orchideenart benötigt ein anderes Substrat.
Each orchid species needs a different substrate.
In biology and horticulture, 'Substrat' (substrate) is often combined with adjectives such as 'nährstoffreich' (nutrient-rich), 'sauer' (acidic), or 'mineralisch' (mineral). Typical verbs are 'wachsen auf' (to grow on) or 'benötigen' (to need).
Diese Kakteenart wächst am besten auf einem mineralischen Substrat.
This cactus species grows best on a mineral substrate.
sponsor / carrier
'der Träger' and 'das Substrat' can both have to do with life or growth in biology and medicine. 'der Träger' means a living being that, for example, carries a pathogen inside itself and can pass it on. 'das Substrat', on the other hand, means the material base on or in which an organism lives or grows, for example soil or a nutrient medium. The confusion arises because both words have something to do with 'carrying' or 'being a base'. A practical distinction is: a carrier is a living being with something inside it; a substrate is the material or surface on which something lives or grows.
Für die Pilze brauchen wir ein feuchtes Substrat aus Holz und Erde.
For the mushrooms, we need a moist substrate made of wood and soil.
Der Patient ist Träger des Virus, obwohl er keine Beschwerden hat.
The patient is a carrier of the virus, even though he has no symptoms.