Abstract
The interaction between potassium (K) and magnesium (Mg) in plants has been intensively studied. However, the responses of different tomato ( Solanum lycopersicum L.) cultivars to high K levels at low temperatures remained unclear. Herein, a complete randomized hydroponic experiment was conducted to evaluate the effects of temperature (25 °C day/18 °C night vs. 15 °C day/8 °C night) and K concentrations (156 mg·L −1 vs. 468 mg·L −1 ) on the growth and Mg nutrition of tomato cultivars Gailiangmaofen (MF) and Jinpeng No. 1 (JP). Compared with the control temperature (25 °C day/18 °C night), the low temperature decreased total biomass, shoot biomass, and Mg uptake in shoot by 17.3%, 24.1%, and 11.8%, respectively; however, the root/shoot ratio was increased. High K had no significant effect on plant growth or biomass compared with the control K concentration (156 mg·L −1 ); however, Mg concentrations and uptake in shoot were significantly lower under high-K treatment. Significant difference was observed for K uptake, but not for Mg uptake, between the two cultivars. There was no significant interaction between temperature and high K on Mg uptake of tomato, so a combined stress of low temperature and high K further inhibited Mg uptake and transport. Low temperature and high K increased the risk of Mg deficiency in tomato.
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Claims 11
Claim · model-written summary
Low temperature decreased tomato total biomass by 17.3% compared with the control temperature.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- low temperaturee0
- Outcome
- total biomasse0
- Direction
- decreasede0
- Value
- 17.3%e0
- Comparator
- control temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the control temperature (25 °C day/18 °C night), the low temperature decreased total biomass, shoot biomass, and Mg uptake in shoot by 17.3%, 24.1%, and 11.8%, respectively; however, the root/shoot ratio was increased”
e1“tomato ( Solanum lycopersicum L.)”
Claim · model-written summary
Low temperature decreased tomato shoot biomass by 24.1% compared with the control temperature.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- low temperaturee0
- Outcome
- shoot biomasse0
- Direction
- decreasede0
- Value
- 24.1%e0
- Comparator
- control temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the control temperature (25 °C day/18 °C night), the low temperature decreased total biomass, shoot biomass, and Mg uptake in shoot by 17.3%, 24.1%, and 11.8%, respectively; however, the root/shoot ratio was increased”
e1“tomato ( Solanum lycopersicum L.)”
Claim · model-written summary
Low temperature decreased Mg uptake in tomato shoot by 11.8% compared with the control temperature.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- low temperaturee0
- Outcome
- Mg uptake in shoote0
- Direction
- decreasede0
- Value
- 11.8%e0
- Comparator
- control temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the control temperature (25 °C day/18 °C night), the low temperature decreased total biomass, shoot biomass, and Mg uptake in shoot by 17.3%, 24.1%, and 11.8%, respectively; however, the root/shoot ratio was increased”
e1“tomato ( Solanum lycopersicum L.)”
Claim · model-written summary
Low temperature increased the root/shoot ratio of tomato compared with the control temperature.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- low temperaturee0
- Outcome
- root/shoot ratioe0
- Direction
- increasede0
- Comparator
- control temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the control temperature (25 °C day/18 °C night), the low temperature decreased total biomass, shoot biomass, and Mg uptake in shoot by 17.3%, 24.1%, and 11.8%, respectively; however, the root/shoot ratio was increased”
e1“tomato ( Solanum lycopersicum L.)”
Claim · model-written summary
High K had no significant effect on tomato plant growth or biomass compared with the control K concentration.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- High Ke0
- Outcome
- plant growth or biomasse0
- Direction
- no significant effecte0
- Comparator
- control K concentratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High K had no significant effect on plant growth or biomass compared with the control K concentration (156 mg·L −1 )”
e1“tomato ( Solanum lycopersicum L.)”
Claim · model-written summary
Mg concentrations and uptake in tomato shoot were significantly lower under high-K treatment.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- high-K treatmente0
- Outcome
- Mg concentrations and uptake in shoote0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mg concentrations and uptake in shoot were significantly lower under high-K treatment”
e1“tomato ( Solanum lycopersicum L.)”
Claim · model-written summary
A significant difference in K uptake was observed between the two tomato cultivars.
- Taxon
- tomatoSolanum lycopersicume1
- Material
- two cultivarse0
- Outcome
- K uptakee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant difference was observed for K uptake, but not for Mg uptake, between the two cultivars”
e1“tomato ( Solanum lycopersicum L.)”
Claim · model-written summary
No significant difference in Mg uptake was observed between the two tomato cultivars.
- Taxon
- tomatoSolanum lycopersicume1
- Material
- two cultivarse0
- Outcome
- Mg uptakee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant difference was observed for K uptake, but not for Mg uptake, between the two cultivars”
e1“tomato ( Solanum lycopersicum L.)”
Claim · model-written summary
There was no significant interaction between temperature and high K on Mg uptake of tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- temperature and high Ke0
- Outcome
- Mg uptakee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no significant interaction between temperature and high K on Mg uptake of tomato”
Claim · model-written summary
The combined stress of low temperature and high K further inhibited Mg uptake and transport in tomato.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- combined stress of low temperature and high Ke0
- Outcome
- Mg uptake and transporte0
- Direction
- further inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a combined stress of low temperature and high K further inhibited Mg uptake and transport”
e1“tomato ( Solanum lycopersicum L.)”
Claim · model-written summary
Low temperature and high K increased the risk of Mg deficiency in tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- Low temperature and high Ke0
- Outcome
- risk of Mg deficiencye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low temperature and high K increased the risk of Mg deficiency in tomato”
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