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Which plant hormone is primarily responsible for the ripening of fruits?
Auxin
Gibberellin
Ethylene
Cytokinin
Ethylene
Ethylene (C2тАЛH4тАЛ) is a unique gaseous plant hormone that acts as a natural ripening agent, stimulating metabolic pathways that lead to fruit softening, color change, and sugar accumulation. It is the primary hormone responsible for triggering and accelerating fruit ripening across climacteric fruits.
Ethylene (C2тАЛH4тАЛ) is a unique gaseous plant hormone that acts as a natural ripening agent, stimulating metabolic pathways that lead to fruit softening, color change, and sugar accumulation. It is the primary hormone responsible for triggering and accelerating fruit ripening across climacteric fruits.
Placing an overripe banana inside a paper bag with a hard avocado traps the ethylene gas released by the banana, rapidly speeding up the softening and ripening of the avocado.
ETHYLENE = Every Tissue Harbors Yielding, Natural-Gas Enforcement for ripening.
C2тАЛH4тАЛ тАФ Chemical formula of the ethylene gas molecule
Ethylene triggers a cellular signaling cascade that activates genes responsible for producing cell wall-degrading enzymes (like pectinase and cellulase) and starch-converting enzymes (like amylase). It exhibits an auto-catalytic effect, meaning the initial burst of ethylene stimulates the synthesis of even more ethylene in surrounding tissues.
Ethylene is the only known plant hormone that exists in a gaseous state at physiological temperatures.
It promotes climacteric fruit ripening, leaf abscission (falling of leaves), and plant senescence (aging).
Commercial supply chains use ethephon or controlled ethylene gas chambers to artificially ripen green harvested fruits.
Allows farmers and distributors to harvest fruits while unripe and sturdy, preventing damage during transport, and ripen them uniformly on demand.
Excessive exposure to ethylene can lead to over-ripening, rapid spoilage, and reduced shelf life of produce.
Commercial ripening of bananas, tomatoes, and mangoes in cold storage and warehouses.
Synchronized flowering and fruit setting in pineapple crops using ethephon.
Auxin is primarily responsible for cell elongation, root initiation, and apical dominance.
Gibberellin promotes stem elongation, seed germination, and bolting, while Cytokinin stimulates cell division and delays leaf aging.
C is correct тАФ Ethylene is the plant hormone primarily responsible for the ripening of fruits.
Keep in mind that unlike auxins or gibberellins which move through the xylem and phloem, ethylene is a volatile gas that diffuses freely through the air spaces between plant cells.
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