Abstract
Abstract This study quantified the effects of an abiotic stress, salinity, and a biotic stress, phytophthora root rot, on root mortality and decomposition in tomato ( Lycopersicon esculentum Mill.). Rhizotron windows were used to measure root mortality rates in mature, container‐grown plants. A novel assay was developed to monitor root decomposition by quantifying root‐length disappearance over time using petri dishes in incubation chambers. Phytophthora root rot infection was induced by salt stress in the presence of Phytophthora parasitica Dastur inoculum; however, the moderate levels of disease induced had no effect on rates of root mortality or on root decomposition. Genotypic differences in root decomposition under salt stress were shown by the decomposition assay, the first report of intraspecific variation in root decomposition rates. High‐salt UC82B had 50% higher root mortality and a threefold higher initial root decomposition rate than low‐salt UC82B. In contrast, salinity did not enhance root mortality or decomposition in cv. CX8303. UC82B grown under salt stress had thin roots of high N concentration, whereas salt stress did not alter N concentration in CX8303 roots. On a plant by plant basis, root N concentration was correlated with initial rootlength loss in the degradation assay, whereas root diameter was not. The results indicate that an indirect consequence of salt stress could include rapid root decomposition.
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 9
Claim · model-written summary
Moderate Phytophthora root rot induced under salt stress had no effect on rates of root mortality or root decomposition.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- salt stresse1
- Interactor
- Phytophthora parasitica Dastur
Phytophthora nicotianaee1pathogen - Outcome
- rates of root mortality or on root decompositione1
- Direction
- no effecte1
- Qualifier
- moderate levels of disease inducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study quantified the effects of an abiotic stress, salinity, and a biotic stress, phytophthora root rot, on root mortality and decomposition in tomato ( Lycopersicon esculentum Mill.)”
e1“Phytophthora root rot infection was induced by salt stress in the presence of Phytophthora parasitica Dastur inoculum; however, the moderate levels of disease induced had no effect on rates of root mortality or on root decomposition”
Claim · model-written summary
High-salt UC82B tomato had 50% higher root mortality than low-salt UC82B.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- UC82Be2
- Treatment
- High‐salte2
- Outcome
- root mortalitye2
- Direction
- highere2
- Value
- 50%e2
- Comparator
- low‐salt UC82Be2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study quantified the effects of an abiotic stress, salinity, and a biotic stress, phytophthora root rot, on root mortality and decomposition in tomato ( Lycopersicon esculentum Mill.)”
e2“High‐salt UC82B had 50% higher root mortality and a threefold higher initial root decomposition rate than low‐salt UC82B”
Claim · model-written summary
High-salt UC82B tomato had a threefold higher initial root decomposition rate than low-salt UC82B.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- UC82Be2
- Treatment
- High‐salte2
- Outcome
- initial root decomposition ratee2
- Direction
- highere2
- Value
- threefolde2
- Comparator
- low‐salt UC82Be2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study quantified the effects of an abiotic stress, salinity, and a biotic stress, phytophthora root rot, on root mortality and decomposition in tomato ( Lycopersicon esculentum Mill.)”
e2“High‐salt UC82B had 50% higher root mortality and a threefold higher initial root decomposition rate than low‐salt UC82B”
Claim · model-written summary
Salinity did not enhance root mortality or decomposition in tomato cultivar CX8303.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- CX8303e3
- Treatment
- salinitye3
- Outcome
- root mortality or decompositione3
- Direction
- did not enhancee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study quantified the effects of an abiotic stress, salinity, and a biotic stress, phytophthora root rot, on root mortality and decomposition in tomato ( Lycopersicon esculentum Mill.)”
e3“In contrast, salinity did not enhance root mortality or decomposition in cv. CX8303”
Claim · model-written summary
UC82B roots grown under salt stress were thin and had high N concentration.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- UC82Be4
- Organ / stage
- thin rootse4
- Treatment
- salt stresse4
- Outcome
- N concentratione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study quantified the effects of an abiotic stress, salinity, and a biotic stress, phytophthora root rot, on root mortality and decomposition in tomato ( Lycopersicon esculentum Mill.)”
e4“UC82B grown under salt stress had thin roots of high N concentration, whereas salt stress did not alter N concentration in CX8303 roots”
Claim · model-written summary
Salt stress did not alter root N concentration in tomato cultivar CX8303.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- CX8303e4
- Organ / stage
- CX8303 rootse4
- Treatment
- salt stresse4
- Outcome
- N concentratione4
- Direction
- did not altere4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study quantified the effects of an abiotic stress, salinity, and a biotic stress, phytophthora root rot, on root mortality and decomposition in tomato ( Lycopersicon esculentum Mill.)”
e4“UC82B grown under salt stress had thin roots of high N concentration, whereas salt stress did not alter N concentration in CX8303 roots”
Claim · model-written summary
Root N concentration was correlated with initial root length loss in the degradation assay.
- Taxon
- tomatoSolanum lycopersicume0
- Compound
- root N concentratione5
- Outcome
- initial rootlength losse5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study quantified the effects of an abiotic stress, salinity, and a biotic stress, phytophthora root rot, on root mortality and decomposition in tomato ( Lycopersicon esculentum Mill.)”
e5“On a plant by plant basis, root N concentration was correlated with initial rootlength loss in the degradation assay, whereas root diameter was not”
Claim · model-written summary
Root diameter was not correlated with initial root length loss in the degradation assay.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- root diametere5
- Outcome
- initial rootlength losse5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study quantified the effects of an abiotic stress, salinity, and a biotic stress, phytophthora root rot, on root mortality and decomposition in tomato ( Lycopersicon esculentum Mill.)”
e5“On a plant by plant basis, root N concentration was correlated with initial rootlength loss in the degradation assay, whereas root diameter was not”
Claim · model-written summary
Genotypes differed in root decomposition under salt stress, the first report of intraspecific variation in root decomposition rates.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- salt stresse6
- Outcome
- Genotypic differences in root decompositione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study quantified the effects of an abiotic stress, salinity, and a biotic stress, phytophthora root rot, on root mortality and decomposition in tomato ( Lycopersicon esculentum Mill.)”
e6“Genotypic differences in root decomposition under salt stress were shown by the decomposition assay, the first report of intraspecific variation in root decomposition rates”
The same questions in other papers
salinity · pest · Solanum lycopersicum (tomato)Positive and negative results
3 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →salinity · nutrient: content · Solanum lycopersicum (tomato)Positive and negative results
57 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
62 papers more in this group
See all 66 papers →salinity · Phytophthora nicotianae · Solanum lycopersicum (tomato)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.