Starch Localisation in Mango Tree: Histological Observations

Possible Physiological Mechanisms of Premature Fruit Drop in Mango (Mangifera Indica L.) in Northern Vietnam

“…The surplus of carbohydrates is then stored, usually in the form of starch (Davie et al, 2000;Kozlowski, 1992;Normand et al, 2009). In our study, pedicels from irrigated trees indicated increased starch accumulation in AZ-cc; and starch grains were also found in cells of pith area, which was also reported for Citrus (Wilson and Hendershott, 1968).…”

“…Consequently, abscission of flowers and fruits at an early stage of development adjust fruit number to the capacity of carbohydrate supply which the tree can provide (Agusti et al, 1982;Gomez-Cadenas et al, 2000). In mango, carbohydrate storage capacity is one of the important factors that determine the number of fruit that the tree can nurture to maturity (Davie et al, 2000;Normand et al, 2009). However, competition for nutrient resources is also a factor for premature fruit abscission (Stephenson, 1981;Stephenson and Gallagher, 1986).…”

The roles of non-structural carbohydrates in fruiting: a review focusing on mango (Mangifera indica)

“…Starch is a storage polyglucan that accumulates as granules of amylose or amylopectin in the plastids of cells. Starch acts as a resource for reserve mobilisation to sinks when demand is greater than production (Davie et al 1999;Normand et al 2009). In mango, starch is mainly found in xylem parenchyma of roots, the trunk, branches and shoots, and accounts for more than 80% of the NSC (Davie et al 1999;Normand et al 2006;Normand et al 2009).…”

“…In mango (Mangifera indica L.), our understanding of NSC utilisation is incomplete. However, variability in starch across organs at key phenological stages has been described (Davie and Stassen 1997a;Stassen and Janse van Vuuren 1997;Davie et al 1999;Normand et al 2009), as has the abundance of major sugars (Normand et al 2006;Prasad et al 2014). Understanding NSC in mango trees is important for enhancing fruit productivity.…”

“…1). Leaf storage of starch is typically transient whereas storage in perennial woody structures such as roots and branches are more long term (Normand et al 2009). Starch regulates carbon utilisation indirectly whereas sugars influence organ growth directly (Stitt and Zeeman 2012).…”