In fruits, an increase in sucrose levels is observed at the late mature green stage and sucrose is broken down by the enzyme invertase following the onset of ripening [ 8].
These results apparently indicate that the RIN protein is a transcriptional regulator triggering the onset of ripening by inducing the expression of these ripening-associated genes.
Our results indicated that α-glucosidase or glucanase activity increased during the early stage of ripening but decreased in later stage and might play a role in the onset of ripening.
Brassinosteroids accumulate during fruit development and seem to play a key role in determining the onset of ripening in fleshy fruits [ 23, 41].
Mitochondrial DNA RFLP was used to show that several strains of D. hansenii were present from the onset of ripening.
The burst in ethylene production is the key event for the onset of ripening in climacteric fruits, including tomatoes.
VvAdh1 and VvAdh3 transcripts were temporarily accumulated in young, developing berry, whereas VvAdh2 was overexpressed later in fruit development, from the onset of ripening (véraison).
Malate is actively synthesized and accumulates until véraison in the grape berry, while it becomes a preferential substrate for respiration at the onset of ripening.
In some fruit species, TLPs are induced with the onset of ripening [2], [17], [18] and thus it was thought to be a developmentally controlled gene with fruit-specific expression [2].
One of the major diseases, brown rot, is caused by a fungus Monilinia fructicola which attacks the fruits at the onset of ripening and continues to be a menace through post harvest storage and shipping.
The process of softening begins with the onset of ripening.
