Ongoings in the apple watercore: First evidence from proteomic and metabolomic analysis

The Ca2+‐MdCRF4‐MdWRKY9 module negatively affects apple fruit watercore formation by suppressing the transcription of MdSOT2

“…Previous studies have shown that apple fruit tissues with a watercore have a lower Ca 2+ content and a higher sorbitol content than tissues without a watercore (Cebulj et al, 2021;Liu et al, 2022). In addition, there is strong evidence that Ca 2+ and sorbitol can affect watercore formation in apple fruit (Bowen & Watkins, 1997;Yang et al, 2023). However, the molecular network regulating watercore formation in apples is still unclear.…”

“…Previous studies have shown that the calcium content in WW is significantly lower than that in H (Bowen & Watkins, 1997;Yang et al, 2023). We also measured the calcium content of the H, HW, and WW.…”

“…It plays a role in preserving the stability of cell walls, cell membranes, and membrane-bound proteins, while also being involved in the regulation of various metabolic processes within cells (Kowalik et al, 2020). Previous studies have demonstrated that Ca 2+ affects watercore formation in the apple fruit, as the calcium content of tissue with a watercore is significantly lower than that of tissue without a watercore (Bowen & Watkins, 1997;Yang et al, 2023). Calmodulin, a calcium ion receptor, is thought to be involved in regulating intracellular glycogen metabolism (Means & Dedman, 1980).…”

Changes in physicochemical property and its potential regulatory mechanism for the formation of water core of the Fuji apples post‐harvesting

“…The growth conditions in terms of long light duration and cold night are also associated with the occurrence of the water‐core phenomenon (Cebulj et al., 2021). A recent report suggested that carbohydrate metabolites were prioritised enriched in water‐cored apple, including highly accumulated sucrose and sugar alcohols via a metabolomic analysis (Yang et al., 2023).…”