"Deficiency" and "excess" terms requests

[sabrinatoro]

[This was originally part of case #9. However, this request is different from the one in case#9. So I am opening a new case for this. This request is becoming increasingly important as publications are accumulating requiring “Zn deficiency” and other "deficiencies" in ZECO]

Suggestion/request:

NTR1: modification of chemical composition
Definition: condition in which levels of a chemical is altered relative to standard.
Parent: experimental conditions (ZECO:0000104)
Curation: this term and its children require a Chebi term
Note: we might have to create this parent term in order to make it easier to add the curation constraint to add a Chebi term for this term. This cannot be under “chemical treatment” (the definition does not match)

NTR2: diet with modified chemical content
Definition: Food content condition in which levels of a chemical are altered relative to standard diet.
Parents: food content (ZECO:0000117) ; modification of chemical composition (NTR1)

NTR: diet with chemical deficiency
Definition: Food content condition in which levels of a chemical are decreased relative to standard diet.
Parent: diet with modified chemical content (NTR2)
Note: this is similar to “nutrient decreased”

NTR: diet with chemical excess
Definition: Food content condition in which levels of a chemical are increased relative to standard diet.
Parent: diet with modified chemical content (NTR2)
Note: this is similar to “nutrient increased”

NTR3: water quality with modified chemical content
Definition: Water quality condition in which levels of a chemical are altered relative to standard.
Parents: water quality (ZECO:0000182) ; modification of chemical composition (NTR1)
Note: some of the terms under water quality could be brought under this term… maybe this could be taken care of later?

NTR: water with chemical deficiency
Definition: water quality condition in which levels of a chemical are decreased relative to standard.
Parent: water quality with modified chemical content (NTR3)

NTR: water with chemical excess
Definition: water quality content condition in which levels of a chemical are increased relative to standard.
Parent: water quality with modified chemical content (NTR3)

[sabrinatoro]

We could also bring the "chemicals together".
The definition of the current term "chemical treatment" would represent chemicals added to environment, diet, injection. (i.e. addition of a chemical not existing in the standard)
The proposed term "modification of chemical composition" would represent a change in the levels of chemicals existing in the standard.