Abstract
As one of the application practices of xerophytophysiology in plant production, partial root drying (PRD) is adopted as an irrigation technique, where half of the root zone is irrigated while the other half is allowed to dry out, and then the previously well-watered side of the root system is allowed to dry down while the previously dried side is fully irrigated. However, the physiological mechanisms are not clear enough. As confirmed in the present research, PRD not only induced osmotic adjustment, whereby the leaf turgor potential maintained higher than usual, but also strengthened the tomato plant resistance to leaf blights. The pressure-volume (P-V) curve analysis showed that the osmotic potential in symplasm at fully turgid status was lower and consequently the leaf turgor potential was higher in tomato leaves of PRD-treated plants than in the control plants. Leaf symplastic water fraction was larger in tomato leaves of PRD-treated plants. Both osmotic potential and relative water content at the point of incipient plasmolysis were lower, suggesting a higher stress resistance, in tomato leaves in PRD treatment. Analyses of photosynthetic hysteresis and stomatal declining curves showed that there were less constraints in photosynthetic mechanisms in PRD tomato leaves, where the transpiration through the leaf epicuticular layer was also smaller, suggesting the leaf surface was more protective from water loss and pathogen infections. As consequences, the PRD-treated tomato plants not only showed higher photosynthetic activity and yielded more and better fruit, but also were less infected by leaf blights. It is concluded that PRD is an acceptable technique to produce stronger crops for disease resistance and yield improvement in crop production.
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 13
Claim · model-written summary
Partial root drying induced osmotic adjustment and higher leaf turgor.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- PRDe0
- Outcome
- osmotic adjustment, whereby the leaf turgor potentiale0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PRD not only induced osmotic adjustment, whereby the leaf turgor potential maintained higher than usual”
t0“tomato”
Claim · model-written summary
Partial root drying strengthened resistance to leaf blights.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- PRDe1
- Outcome
- resistance to leaf blightse0
- Direction
- strengthenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strengthened the tomato plant resistance to leaf blights”
t0“Partial root drying improves tomato crops”
e1“PRD not only induced osmotic adjustment”
Claim · model-written summary
PRD lowered symplastic osmotic potential at full turgor versus controls.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- PRD-treatede0
- Outcome
- osmotic potential in symplasm at fully turgid statuse0
- Direction
- lowere0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the osmotic potential in symplasm at fully turgid status was lower and consequently the leaf turgor potential was higher in tomato leaves of PRD-treated plants than in the control plants”
Claim · model-written summary
PRD increased tomato leaf turgor potential versus controls.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- PRD-treatede0
- Outcome
- leaf turgor potentiale0
- Direction
- highere0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leaf turgor potential was higher in tomato leaves of PRD-treated plants than in the control plants”
Claim · model-written summary
PRD increased leaf symplastic water fraction.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- PRD-treatede0
- Outcome
- Leaf symplastic water fractione0
- Direction
- largere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf symplastic water fraction was larger in tomato leaves of PRD-treated plants”
Claim · model-written summary
PRD lowered osmotic potential at incipient plasmolysis.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- PRDe1
- Outcome
- osmotic potentiale0
- Direction
- lowere0
- Qualifier
- at the point of incipient plasmolysise0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both osmotic potential and relative water content at the point of incipient plasmolysis were lower”
t0“tomato”
e1“PRD not only induced osmotic adjustment”
Claim · model-written summary
PRD lowered relative water content at incipient plasmolysis.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- PRDe1
- Outcome
- relative water contente0
- Direction
- lowere0
- Qualifier
- at the point of incipient plasmolysise0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both osmotic potential and relative water content at the point of incipient plasmolysis were lower”
t0“tomato”
e1“PRD not only induced osmotic adjustment”
Claim · model-written summary
PRD leaves had fewer photosynthetic constraints.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- PRDe0
- Outcome
- constraints in photosynthetic mechanismse0
- Direction
- lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were less constraints in photosynthetic mechanisms in PRD tomato leaves”
Claim · model-written summary
PRD reduced leaf epicuticular transpiration.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- PRDe1
- Outcome
- transpiration through the leaf epicuticular layere0
- Direction
- smallere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the transpiration through the leaf epicuticular layer was also smaller”
t0“tomato”
e1“PRD not only induced osmotic adjustment”
Claim · model-written summary
PRD tomato plants had higher photosynthetic activity.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- PRD-treatede0
- Outcome
- photosynthetic activitye0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the PRD-treated tomato plants not only showed higher photosynthetic activity”
Claim · model-written summary
PRD tomato plants produced more and better fruit.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- PRDe1
- Outcome
- fruite0
- Direction
- more and bettere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yielded more and better fruit”
t0“tomato”
e1“PRD not only induced osmotic adjustment”
Claim · model-written summary
PRD tomato plants had less leaf blight infection.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- PRDe1
- Outcome
- infected by leaf blightse0
- Direction
- lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“were less infected by leaf blights”
t0“tomato”
e1“PRD not only induced osmotic adjustment”
Claim · model-written summary
The authors recommend PRD for disease resistance and yield improvement.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- technique to produce stronger crops for disease resistance and yield improvemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PRD is an acceptable technique to produce stronger crops for disease resistance and yield improvement in crop production”
t0“tomato”
The same questions in other papers
processing · physiology: gas exchange · Solanum lycopersicum (tomato)Positive and negative results
2 in the opposite direction
- negative
- negative
processing · physiology: photosynthesis · Solanum lycopersicum (tomato)Positive and negative results
3 papers in the same direction as this paper · 4 in the opposite direction
- negative
- no effect
- negative
4 papers more in this group
See all 8 papers →processing · physiology: water · Solanum lycopersicum (tomato)Positive and negative results
12 papers in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
13 papers more in this group
See all 17 papers →irrigation · physiology: photosynthesis · Solanum lycopersicum (tomato)Positive and negative results
14 papers in the same direction as this paper · 8 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- negative
20 papers more in this group
See all 24 papers →processing · disease · Solanum lycopersicum (tomato)Positive and negative results
24 papers in the same direction as this paper · 2 in the opposite direction
- positive
- negative
- negative
23 papers more in this group
See all 27 papers →processing · yield · Solanum lycopersicum (tomato)Positive and negative results
35 papers in the same direction as this paper · 8 in the opposite direction
- no effect
- no effect
- negative
40 papers more in this group
See all 44 papers →irrigation · physiology: water · Solanum lycopersicum (tomato)Positive and negative results
116 papers in the same direction as this paper · 27 in the opposite direction · 3 reporting no difference from an alternative
- negative
- negative
- negative
143 papers more in this group
See all 147 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.