Abstract
Gibberellic acids had been proven to improve the fruit quality and storability by delaying deterioration and maintaining the antioxidant system. In this study, the effect of GA3 spraying at different concentrations (10, 20, and 50 mg L−1) on the quality of on-tree preserved ‘Shixia’ longan was examined. Only 50 mg L−1 GA3 significantly delayed the decline of soluble solids (22.0% higher than the control) and resulted in higher total phenolics content (TPC), total flavonoid content (TFC), and phenylalanine ammonia-lyase activity in pulp at the later stages. The widely targeted metabolome analysis showed that the treatment reprogrammed secondary metabolites and up-regulated many tannins, phenolic acids, and lignans during the on-tree preservation. More importantly, the preharvest 50 mg L−1 GA3 spraying (at 85 and 95 days after flowering) led to significantly delayed pericarp browning and aril breakdown, as well as lower pericarp relative conductivity and mass loss at the later stages of room-temperature storage. The treatment also resulted in higher antioxidants in pulp (vitamin C, phenolics, and reduced glutathione) and pericarp (vitamin C, flavonoids, and phenolics). Therefore, preharvest 50 mg L−1 GA3 spraying is an effective method for maintaining the quality and up-regulating antioxidants of longan fruit during both on-tree preservation and room-temperature storage.
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Claims 8
Claim · model-written summary
Only 50 mg L−1 GA3 significantly delayed soluble solids decline, leaving 22.0% higher levels than control.
- Taxon
- Longan
Dimocarpus longant0 - Treatment
- 50 mg L−1 GA3e0
- Outcome
- soluble solidse0
- Direction
- highere0
- Value
- 22.0%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only 50 mg L−1 GA3 significantly delayed the decline of soluble solids (22.0% higher than the control)”
t0“Longan”
Claim · model-written summary
50 mg L−1 GA3 produced higher pulp phenolics, flavonoids and phenylalanine ammonia-lyase activity at later stages.
- Taxon
- LonganDimocarpus longant0
- Organ / stage
- pulpe0
- Treatment
- 50 mg L−1 GA3e0
- Outcome
- total phenolics content (TPC), total flavonoid content (TFC), and phenylalanine ammonia-lyase activitye0
- Direction
- highere0
- Qualifier
- later stagese0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only 50 mg L−1 GA3 significantly delayed the decline of soluble solids (22.0% higher than the control) and resulted in higher total phenolics content (TPC), total flavonoid content (TFC), and phenylalanine ammonia-lyase activity in pulp at the later stages.”
t0“Longan”
Claim · model-written summary
Treatment reprogrammed secondary metabolites and up-regulated tannins, phenolic acids and lignans during on-tree preservation.
- Taxon
- LonganDimocarpus longant0
- Treatment
- 50 mg L−1 GA3e1
- Outcome
- tannins, phenolic acids, and lignanse0
- Direction
- up-regulatede0
- Qualifier
- reprogrammed secondary metabolitese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The widely targeted metabolome analysis showed that the treatment reprogrammed secondary metabolites and up-regulated many tannins, phenolic acids, and lignans during the on-tree preservation.”
e1“Only 50 mg L−1 GA3 significantly delayed the decline of soluble solids”
t0“Longan”
Claim · model-written summary
Preharvest 50 mg L−1 GA3 significantly delayed pericarp browning and aril breakdown during later room-temperature storage.
- Taxon
- LonganDimocarpus longant0
- Treatment
- preharvest 50 mg L−1 GA3 sprayinge0
- Outcome
- pericarp browning and aril breakdowne0
- Direction
- delayede0
- Qualifier
- at 85 and 95 days after floweringe0
- Setting
- room-temperature storagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the preharvest 50 mg L−1 GA3 spraying (at 85 and 95 days after flowering) led to significantly delayed pericarp browning and aril breakdown, as well as lower pericarp relative conductivity and mass loss at the later stages of room-temperature storage.”
t0“Longan”
Claim · model-written summary
Preharvest 50 mg L−1 GA3 lowered pericarp relative conductivity and mass loss at later room-temperature storage stages.
- Taxon
- LonganDimocarpus longant0
- Treatment
- preharvest 50 mg L−1 GA3 sprayinge0
- Outcome
- pericarp relative conductivity and mass losse0
- Direction
- lowere0
- Qualifier
- at the later stagese0
- Setting
- room-temperature storagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the preharvest 50 mg L−1 GA3 spraying (at 85 and 95 days after flowering) led to significantly delayed pericarp browning and aril breakdown, as well as lower pericarp relative conductivity and mass loss at the later stages of room-temperature storage.”
t0“Longan”
Claim · model-written summary
Treatment increased pulp vitamin C, phenolics and reduced glutathione.
- Taxon
- LonganDimocarpus longant0
- Organ / stage
- pulpe0
- Treatment
- preharvest 50 mg L−1 GA3 sprayinge1
- Outcome
- vitamin C, phenolics, and reduced glutathionee0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatment also resulted in higher antioxidants in pulp (vitamin C, phenolics, and reduced glutathione) and pericarp (vitamin C, flavonoids, and phenolics).”
e1“the preharvest 50 mg L−1 GA3 spraying (at 85 and 95 days after flowering)”
t0“Longan”
Claim · model-written summary
Treatment increased pericarp vitamin C, flavonoids and phenolics.
- Taxon
- LonganDimocarpus longant0
- Organ / stage
- pericarpe0
- Treatment
- preharvest 50 mg L−1 GA3 sprayinge1
- Outcome
- vitamin C, flavonoids, and phenolicse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatment also resulted in higher antioxidants in pulp (vitamin C, phenolics, and reduced glutathione) and pericarp (vitamin C, flavonoids, and phenolics).”
e1“the preharvest 50 mg L−1 GA3 spraying (at 85 and 95 days after flowering)”
t0“Longan”
Claim · model-written summary
Preharvest 50 mg L−1 GA3 is effective for maintaining longan quality and antioxidants during on-tree preservation and room-temperature storage.
- Taxon
- longanDimocarpus longane0
- Outcome
- preharvest 50 mg L−1 GA3 sprayinge0
- Qualifier
- during both on-tree preservation and room-temperature storagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Therefore, preharvest 50 mg L−1 GA3 spraying is an effective method for maintaining the quality and up-regulating antioxidants of longan fruit during both on-tree preservation and room-temperature storage.”
The same questions in other papers
application · quality: phytochemicals · Dimocarpus longan (longan)Results agree
1 paper in the same direction as this paper
- positive
application · disease · Dimocarpus longan (longan)Results agree
2 papers in the same direction as this paper
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.