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| Ripening hormone- Ethylene |
- Gaseous hormone
- Ripening hormone
- Senescence of leaves and fruits, response to water logging
- Regulate ripening of climacteric fruits (like apples, tomatoes)
- Sharp rise in respiration in climacteric fruits is called ‘climacteric rise’ or climacteric.
- From methionine via S-adenosyl methionine (SAM) and 1-aminocycle propane 1-carboxylic acid (ACC).
- Fruit ripening
- Climacteric rise
- Ethylene production in climacteric fruit is auto catalytic
- Ethylene treated shoots show three 3 characteristics growth responses
- Epinasty: downward curvature of leaves
- Decreased elongation and lateral cell elongation
- Loss of gravity response
- In wet land species like rice ethylene induces rapid elongation growth induces formation of aerenchyma
- High concentration induces adventitious root formation
Tags:
climacteric fruits
Ethylene
gaseous hormone
plant hormone
Ripening hormone
S-adenosyl methionine
Triple response