Question

What changes take place in cell wall at the time of fruit ripening?

Answer 1

Softening is the main thing that occur in cell during fruit ripening. Softening of most fruits is accompanied by the dissolution of cell adhesion, which is brought about by the degradation of the middle lamella. In cell wall polymers, pectic polysaccharides, particularly polyuronides, have been known to be major constituents of the middle lamella. The relationship between the degradation of pectic polyuronides and the decrease in the firmness of fruit tissues has been extensively documented. in addition to the pectin degradation, xyloglucan breakdown has been observed in the early stage of softening in some fruits.

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Answer 2

Answer:

Pectins, which make up a large portion of fruit cell walls, undergo considerable modification during ripening. Solubilization, depolymerization, and the loss of neutral side chains are some of these modifications.

Explanation:

• Complex biological processes that start soon after fertilization lead to the production of fruits.
• Cell division and growth, the buildup of secondary metabolites, and a rise in glucose production are a few of these activities.
• Cell wall lysis and chlorophyll breakdown are used to ripen later-ripe fruit. Phytohormones have a significant impact on a complex network of transcription factors and genetic regulators that regulate fruit development, a crucial step in maximizing seed dispersal.
• The main regulators of ripening and senescence in both dry and fleshy fruits are ethylene and abscisic acid (ABA).
• Although the final stage of a fruit's life is most characterized by the presence of ethylene, ABA also plays a significant regulatory role by helping to produce ethylene and acting as a stress hormone in response to pathogens and dryness.

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