How is sulphur important for plants? Name the amino acids in which it is present.
Sulphur (S) is an important macronutrient in plants that is absorbed by the plants as ion. it mainly functions as a component of vitamins (biotin, thiamine), proteins, coenzyme-A, amino acid (cysteine and methionine) etc. It is also an essential component of ally sulphide (onion, garlic) and sinigrin (mustard).
Deficiency of sulphur can lead to chlorosis in young leaves, extensive root growth, formation of hard and woody stem. It also causes the reduction in juice content of citrus fruit and tea yellow disease of tea. Sulphur is found in amino acids systeine, methionione, etc.
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