BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Abscisic acid (ABA) and ethylene are the major regulators of ripening and senescence in both dry and fleshy fruits, as demonstrated by numerous ripening-defective mutants, effects of exogenous hormone application, and transcriptome analyses.

Detailed explanation-2: -Ethylene is a gas and is known as the “fruit-ripening hormone.” Every fruit has a certain level of ethylene production throughout its lifecycle. However, in some fruits, ethylene levels shoot up when the fruit starts ripening.

Detailed explanation-3: -Ethylene is a gaseous plant hormone that causes fruit to mature. It is abundantly synthesised in the fruits and tissues undergoing ripening and senescence, respectively. Ethylene promotes the ripening of fruits such as tomatoes, lemons, and oranges. It also has the effect of increasing the rate of breathing.

Detailed explanation-4: -Ethylene is a gaseous plant hormone that plays an important role in inducing the ripening process for many fruits, together with other hormones and signals. An unripe fruit generally has low levels of ethylene. As the fruit matures, ethylene is produced as a signal to induce fruit ripening.

Detailed explanation-5: -The gaseous hormone ethylene plays a key role in plant growth and development, and it is a major regulator of stress responses. It inhibits vegetative growth by restricting cell elongation, mainly through cross-talk with auxins.