Abstract
Abstract This work investigates the combined effects of N form and Cd treatment on photosynthesis of tomato (Solanum lycopersicum Mill. cv Ibiza F1). Our study shows that, compared to plants fed with NO3“, dry weight, fresh weight and leaf area decrease when plants received NH4 + as N form. Regardless the N form used, Cd inhibits this parameters. In this report we show that, when grown in NH4 +, Cd—stressed seedlings accumulate higher levels of chlorophyll. Under Cd stress, water content, transpiration rate (E), stomatal conductance (Gs) and photosynthetic activity (Amax) decreased in plants fed with NO3 − and increased in NH4 +- grown-plants. The Fv/Fm ratio of dark adapted leaves was lower in NH4+- grown tomato compared to in NO3“-grown seedlings. Upon exposure to metal, the Fv/Fm ratio and the fraction of open PSII reaction centers (qp) were depressed by Cd in NO3“−grown plants and enhanced in NH4 +-grown ones. NPQ stimulated by Cd in NO3 −-grown plants was inhibits in NH4 +-grown ones.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
NH4 + nutrition decreased dry weight, fresh weight, and leaf area compared with NO3“.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- NH4 +e0
- Outcome
- dry weight, fresh weight and leaf areae0
- Direction
- decreasee0
- Comparator
- NO3“e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared to plants fed with NO3“, dry weight, fresh weight and leaf area decrease when plants received NH4 + as N form.”
t0“tomato”
Claim · model-written summary
Cd inhibited tomato dry weight, fresh weight, and leaf area regardless of nitrogen form.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Cde0
- Outcome
- this parameterse0
- Direction
- inhibitse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regardless the N form used, Cd inhibits this parameters.”
t0“tomato”
Claim · model-written summary
Under NH4 + nutrition, Cd-stressed seedlings accumulated higher chlorophyll levels.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Cd—stressede0
- Outcome
- chlorophylle0
- Direction
- highere0
- Qualifier
- grown in NH4 +e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when grown in NH4 +, Cd—stressed seedlings accumulate higher levels of chlorophyll.”
t0“tomato”
Claim · model-written summary
Under Cd stress, water content, transpiration, stomatal conductance, and photosynthetic activity decreased with NO3 − nutrition.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Cd stresse0
- Outcome
- water content, transpiration rate (E), stomatal conductance (Gs) and photosynthetic activity (Amax)e0
- Direction
- decreasede0
- Qualifier
- plants fed with NO3 −e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under Cd stress, water content, transpiration rate (E), stomatal conductance (Gs) and photosynthetic activity (Amax) decreased in plants fed with NO3 − and increased in NH4 +- grown-plants.”
t0“tomato”
Claim · model-written summary
Under Cd stress, water content, transpiration, stomatal conductance, and photosynthetic activity increased with NH4 + nutrition.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Cd stresse0
- Outcome
- water content, transpiration rate (E), stomatal conductance (Gs) and photosynthetic activity (Amax)e0
- Direction
- increasede0
- Qualifier
- NH4 +- grown-plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under Cd stress, water content, transpiration rate (E), stomatal conductance (Gs) and photosynthetic activity (Amax) decreased in plants fed with NO3 − and increased in NH4 +- grown-plants.”
t0“tomato”
Claim · model-written summary
Fv/Fm in dark-adapted leaves was lower under NH4+ than NO3“ nutrition.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- Fv/Fm ratioe0
- Direction
- lowere0
- Qualifier
- NH4+- grown tomatoe0
- Comparator
- NO3“-grown seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Fv/Fm ratio of dark adapted leaves was lower in NH4+- grown tomato compared to in NO3“-grown seedlings.”
t0“tomato”
Claim · model-written summary
Cd depressed Fv/Fm and qp in NO3“−grown plants.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Cde0
- Outcome
- Fv/Fm ratio and the fraction of open PSII reaction centers (qp)e0
- Direction
- depressede0
- Qualifier
- NO3“−grown plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Fv/Fm ratio and the fraction of open PSII reaction centers (qp) were depressed by Cd in NO3“−grown plants and enhanced in NH4 +-grown ones.”
t0“tomato”
Claim · model-written summary
Cd enhanced Fv/Fm and qp in NH4 +-grown plants.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Cde0
- Outcome
- Fv/Fm ratio and the fraction of open PSII reaction centers (qp)e0
- Direction
- enhancede0
- Qualifier
- NH4 +-grown onese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Fv/Fm ratio and the fraction of open PSII reaction centers (qp) were depressed by Cd in NO3“−grown plants and enhanced in NH4 +-grown ones.”
t0“tomato”
Claim · model-written summary
Cd stimulated NPQ in NO3 −-grown plants.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Cde0
- Outcome
- NPQe0
- Direction
- stimulatede0
- Qualifier
- NO3 −-grown plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NPQ stimulated by Cd in NO3 −-grown plants was inhibits in NH4 +-grown ones.”
t0“tomato”
Claim · model-written summary
Cd inhibited NPQ in NH4 +-grown plants.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Cde0
- Outcome
- NPQe0
- Direction
- inhibitse0
- Qualifier
- NH4 +-grown onese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NPQ stimulated by Cd in NO3 −-grown plants was inhibits in NH4 +-grown ones.”
t0“tomato”
The same questions in other papers
cadmium atom · physiology: photosynthesis · Solanum lycopersicum (tomato)Positive and negative results
1 paper in the same direction as this paper · 16 in the opposite direction
- negative
- negative
- negative
14 papers more in this group
See all 18 papers →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.