Abstract
: Rootstocks are commonly used in melon cultivation to mitigate biotic and abiotic stresses and improve fruit quality. However, the extent to which rootstocks influence nutrient allocation, growth dynamics, and fruit quality formation in the scion remains insufficiently understood. This study compared the effects of two pumpkin rootstocks (Tianzhen No. 1 and Sizhuang No. 12) on melon fruit quality by examining nutrient partitioning, sugar accumulation, hormonal balance, and expression of sugar metabolism-related genes. Compared with non-grafted plants, rootstock grafting enhanced plant growth and increased total N, P, and K uptake (mg plant -1 ) as well as tissue nutrient concentrations (mg g -1 DW) during vine growth and fruit maturation stages. Tianzhen No. 1 showed higher K distribution to the scion (97.6%) and greater fruit K accumulation (45.88 mg/g) than Sizhuang No. 12. Fruits grafted onto Tianzhen No. 1 also exhibited higher total soluble solids (15.96 °Brix) and soluble sugar contents, including glucose (18.28 mg g -1 ), fructose (20.20 mg g -1 ), and sucrose (144.25 mg g -1 ), whereas fruits grafted onto Sizhuang No. 12 showed higher firmness (4.18 kg cm -2 ) compared with Tianzhen No. 1-grafted fruits (3.07 kg cm -2 ). At fruit maturation, Tianzhen No. 1-grafted melons had higher ABA content (14.49 ng/g) and upregulated expression of sugar transporter genes ( HT2 , HT7 , SWEET4 , SWEET7 ) and genes encoding key metabolic enzymes ( SPS1 , NIN3 ) compared to Sizhuang No. 12. These observed associations suggest that rootstock-mediated differences in nutrient uptake may contribute to altered scion fruit quality metabolism. Overall, the findings provide insights into the physiological and molecular basis of rootstock-dependent variation in melon fruit quality and may contribute to the development of targeted rootstock selection strategies in melon breeding programs.
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Claims 14
Claim · model-written summary
Rootstock grafting enhanced melon plant growth over non-grafted plants.
- Taxon
- melon
.jpg?width=60)
Cucumis melot0 - Treatment
- rootstock graftinge0
- Outcome
- plant growthe0
- Direction
- enhancede0
- Comparator
- non-grafted plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Compared with non-grafted plants, rootstock grafting enhanced plant growth and increased total N, P, and K uptake (mg plant -1 ) as well as tissue nutrient concentrations (mg g -1 DW) during vine growth and fruit maturation stages.”
t0“melon”
Claim · model-written summary
Grafting increased total N, P and K uptake.
- Taxon
- melonCucumis melot0
- Treatment
- rootstock graftinge0
- Outcome
- total N, P, and K uptakee0
- Direction
- increasede0
- Comparator
- non-grafted plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with non-grafted plants, rootstock grafting enhanced plant growth and increased total N, P, and K uptake (mg plant -1 ) as well as tissue nutrient concentrations (mg g -1 DW) during vine growth and fruit maturation stages.”
t0“melon”
Claim · model-written summary
Grafting increased tissue nutrient concentrations.
- Taxon
- melonCucumis melot0
- Treatment
- rootstock graftinge0
- Outcome
- tissue nutrient concentrationse0
- Direction
- increasede0
- Comparator
- non-grafted plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with non-grafted plants, rootstock grafting enhanced plant growth and increased total N, P, and K uptake (mg plant -1 ) as well as tissue nutrient concentrations (mg g -1 DW) during vine growth and fruit maturation stages.”
t0“melon”
Claim · model-written summary
Tianzhen No. 1 allocated more K to the melon scion than Sizhuang No. 12.
- Taxon
- melonCucumis melot0
- Material
- Tianzhen No. 1e0
- Treatment
- Tianzhen No. 1e0
- Outcome
- K distribution to the scione0
- Direction
- highere0
- Value
- 97.6%e0
- Comparator
- Sizhuang No. 12e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tianzhen No. 1 showed higher K distribution to the scion (97.6%) and greater fruit K accumulation (45.88 mg/g) than Sizhuang No. 12.”
t0“melon”
Claim · model-written summary
Tianzhen No. 1 caused greater melon fruit K accumulation than Sizhuang No. 12.
- Taxon
- melonCucumis melot0
- Treatment
- Tianzhen No. 1e0
- Outcome
- fruit K accumulatione0
- Direction
- greatere0
- Value
- 45.88 mg/ge0
- Comparator
- Sizhuang No. 12e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tianzhen No. 1 showed higher K distribution to the scion (97.6%) and greater fruit K accumulation (45.88 mg/g) than Sizhuang No. 12.”
t0“melon”
Claim · model-written summary
Tianzhen No. 1 fruit had higher total soluble solids than Sizhuang No. 12 fruit.
- Taxon
- melonCucumis melot0
- Treatment
- Tianzhen No. 1e0
- Outcome
- total soluble solidse0
- Direction
- highere0
- Value
- 15.96 °Brixe0
- Comparator
- Sizhuang No. 12e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruits grafted onto Tianzhen No. 1 also exhibited higher total soluble solids (15.96 °Brix) and soluble sugar contents, including glucose (18.28 mg g -1 ), fructose (20.20 mg g -1 ), and sucrose (144.25 mg g -1 ), whereas fruits grafted onto Sizhuang No. 12 showed higher firmness (4.18 kg cm -2 ) compared with Tianzhen No. 1-grafted fruits (3.07 kg cm -2 ).”
t0“melon”
Claim · model-written summary
Tianzhen No. 1 fruit had higher glucose content.
- Taxon
- melonCucumis melot0
- Treatment
- Tianzhen No. 1e1
- Outcome
- glucosee0
- Direction
- highere0
- Value
- 18.28 mg g -1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher total soluble solids (15.96 °Brix) and soluble sugar contents, including glucose (18.28 mg g -1 ), fructose (20.20 mg g -1 ), and sucrose (144.25 mg g -1 )”
e1“Fruits grafted onto Tianzhen No. 1”
t0“melon”
Claim · model-written summary
Tianzhen No. 1 fruit had higher fructose content.
- Taxon
- melonCucumis melot0
- Treatment
- Tianzhen No. 1e1
- Outcome
- fructosee0
- Direction
- highere0
- Value
- 20.20 mg g -1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher total soluble solids (15.96 °Brix) and soluble sugar contents, including glucose (18.28 mg g -1 ), fructose (20.20 mg g -1 ), and sucrose (144.25 mg g -1 )”
e1“Fruits grafted onto Tianzhen No. 1”
t0“melon”
Claim · model-written summary
Tianzhen No. 1 fruit had higher sucrose content.
- Taxon
- melonCucumis melot0
- Treatment
- Tianzhen No. 1e1
- Outcome
- sucrosee0
- Direction
- highere0
- Value
- 144.25 mg g -1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher total soluble solids (15.96 °Brix) and soluble sugar contents, including glucose (18.28 mg g -1 ), fructose (20.20 mg g -1 ), and sucrose (144.25 mg g -1 )”
e1“Fruits grafted onto Tianzhen No. 1”
t0“melon”
Claim · model-written summary
Sizhuang No. 12 fruit had higher firmness than Tianzhen No. 1 fruit.
- Taxon
- melonCucumis melot0
- Treatment
- Sizhuang No. 12e0
- Outcome
- firmnesse0
- Direction
- highere0
- Value
- 4.18 kg cm -2e0
- Qualifier
- 3.07 kg cm -2e0
- Comparator
- Tianzhen No. 1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fruits grafted onto Sizhuang No. 12 showed higher firmness (4.18 kg cm -2 ) compared with Tianzhen No. 1-grafted fruits (3.07 kg cm -2 )”
t0“melon”
Claim · model-written summary
Tianzhen No. 1 melons had higher ABA at maturation than Sizhuang No. 12.
- Taxon
- melonCucumis melot0
- Organ / stage
- fruit maturatione0
- Treatment
- Tianzhen No. 1e0
- Outcome
- ABA contente0
- Direction
- highere0
- Value
- 14.49 ng/ge0
- Comparator
- Sizhuang No. 12e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At fruit maturation, Tianzhen No. 1-grafted melons had higher ABA content (14.49 ng/g) and upregulated expression of sugar transporter genes ( HT2 , HT7 , SWEET4 , SWEET7 ) and genes encoding key metabolic enzymes ( SPS1 , NIN3 ) compared to Sizhuang No. 12.”
t0“melon”
Claim · model-written summary
Tianzhen No. 1 melons upregulated sugar transporter genes at fruit maturation.
- Taxon
- melonCucumis melot0
- Treatment
- Tianzhen No. 1e0
- Gene
- HT2 , HT7 , SWEET4 , SWEET7e0
- Outcome
- expression of sugar transporter genese0
- Direction
- upregulatede0
- Comparator
- Sizhuang No. 12e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At fruit maturation, Tianzhen No. 1-grafted melons had higher ABA content (14.49 ng/g) and upregulated expression of sugar transporter genes ( HT2 , HT7 , SWEET4 , SWEET7 ) and genes encoding key metabolic enzymes ( SPS1 , NIN3 ) compared to Sizhuang No. 12.”
t0“melon”
Claim · model-written summary
Tianzhen No. 1 melons upregulated key metabolic enzyme genes at fruit maturation.
- Taxon
- melonCucumis melot0
- Treatment
- Tianzhen No. 1e0
- Gene
- SPS1 , NIN3e0
- Outcome
- genes encoding key metabolic enzymese0
- Direction
- upregulatede0
- Comparator
- Sizhuang No. 12e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At fruit maturation, Tianzhen No. 1-grafted melons had higher ABA content (14.49 ng/g) and upregulated expression of sugar transporter genes ( HT2 , HT7 , SWEET4 , SWEET7 ) and genes encoding key metabolic enzymes ( SPS1 , NIN3 ) compared to Sizhuang No. 12.”
t0“melon”
Claim · model-written summary
Authors infer that rootstock nutrient uptake differences may contribute to fruit quality metabolism.
- Taxon
- melonCucumis melot0
- Outcome
- altered scion fruit quality metabolisme0
- Qualifier
- rootstock-mediated differences in nutrient uptakee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rootstock-mediated differences in nutrient uptake may contribute to altered scion fruit quality metabolism”
t0“melon”
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