Sugar Accumulation in Fruit

Sugars are a product of photosynthesis. The plant uses electrons of light and carbon dioxide to create carbohydrates, which are sugars. This process occurs in the leaves as this is the point of photosynthesis in the plant. Once synthesised, the sugars are then transported through the vascular system of the plant in solution to the growing fruit. The sugars are then loaded into vacuoles in the fruit where they are stored. The main sugars produced by plants varies and can include sucrose in citrus, persimmon, tomato, grape, strawberry and banana, sorbitol and sucrose in apple, peach, pear, cherry, plaum and loquat, raffinose, stachyose and sucrose in melon, cucumber, pumpkin and squash, and mannitol and sucrose in celery, parsley and olive. The growing conditions can play a significant role in the amount and type of sugar that is stored in particular fruit, and these growing conditions can be manipulated by cultivators. Certain breeds of plant produce higher sugar content fruit, which is of commercial interest. 

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Yamaki, S. 2010. Metabolism and accumulation of sugars translocated to fruit and their regulation. Journal of the Japanese Society for Horticultural Science. 79(1): 1-15

About Robert Barrington

Robert Barrington is a writer, nutritionist, lecturer and philosopher.
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