Please why the brownish decolouration of some plant tissues when injured and exposed to atmospheric air? possible reaction mechanisms will be of help?
Kevin Ehiosun
Ethylene induces defense reactions after infection by fungi or when plants are wounded. Ethylene is involved in the induction of senescence. During senescence, the degradation of leaf material is initiated. Proteins are degraded to amino acids, which, together with certain ions (e.g., Mg2+), are withdrawn from the senescing leaves via the phloem for reutilization.
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