Abstract
The effects of drought, cadmium (Cd) and drought-Cd combinations on antioxidant compounds, antioxidant enzymes and shoot growth were investigated for drought tolerant [Lycopersicon peruvianum (L.) Mill.] and sensitive of (Lycopersicon esculentum Mill. cv. Lukullus) tomato species. Drought-Cd combinations significantly decreased shoot growth in both species (P < 0.01), drought stress also decreased shoot growth in drought sensitive L. esculentum. Cd was accumulated higher in the roots of drought sensitive L. esculentum than drought tolerant L. peruvianum. The chlorophyll contents decreased in all stress treatments in L. esculentum but did not change in L. peruvianum. Carotenoid contents significantly increased in all stress treatments in both species (P < 0.01). Significant increases in the contents of carotenoids in both species under stress conditions seemed to be associated with a protective role against reactive oxygen species (ROS). Ascorbate (ASC) content decreased during drought stress while increased under Cd stress. Catalase (CAT) and glutathione reductase (GR) activities significantly increased under drought stress in L. peruvianum while decreased in L. esculentum (P < 0.001). Ascorbate peroxidase (APX) activity decreased under all stress treatments in both species. Drought and Cd stresses increased superoxide dismutase (SOD) activity in both species. The present data did not show a relation between drought tolerance and levels of antioxidative defence system that was induced from Cd. However, there is a clear relationship between Cd uptake and drought tolerance of plants.
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Claims 14
Claim · model-written summary
Drought-Cd combinations significantly decreased shoot growth in both tomato species.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- Drought-Cd combinationse1
- Outcome
- shoot growthe1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two tomato species”
e1“Drought-Cd combinations significantly decreased shoot growth in both species (P < 0.01), drought stress also decreased shoot growth in drought sensitive L. esculentum”
Claim · model-written summary
Drought stress decreased shoot growth in the drought-sensitive L. esculentum.
- Taxon
- L. esculentumSolanum lycopersicume1
- Treatment
- drought stresse1
- Outcome
- shoot growthe1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Drought-Cd combinations significantly decreased shoot growth in both species (P < 0.01), drought stress also decreased shoot growth in drought sensitive L. esculentum”
Claim · model-written summary
Cd was accumulated higher in roots of drought-sensitive L. esculentum than in drought-tolerant L. peruvianum.
- Taxon
- L. esculentumSolanum lycopersicume2
- Organ / stage
- rootse2
- Outcome
- Cd was accumulatede2
- Direction
- highere2
- Comparator
- drought tolerant L. peruvianume2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Cd was accumulated higher in the roots of drought sensitive L. esculentum than drought tolerant L. peruvianum”
Claim · model-written summary
Chlorophyll contents decreased in all stress treatments in L. esculentum.
- Taxon
- L. esculentumSolanum lycopersicume3
- Treatment
- stress treatmentse3
- Outcome
- chlorophyll contentse3
- Direction
- decreasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The chlorophyll contents decreased in all stress treatments in L. esculentum but did not change in L. peruvianum”
Claim · model-written summary
Chlorophyll contents did not change in L. peruvianum under stress treatments.
- Taxon
- L. peruvianumSolanum peruvianume3
- Treatment
- stress treatmentse3
- Outcome
- chlorophyll contentse3
- Direction
- did not changee3
Not reportedComparator
Verbatim
e3“The chlorophyll contents decreased in all stress treatments in L. esculentum but did not change in L. peruvianum”
Claim · model-written summary
Carotenoid contents significantly increased in all stress treatments in both tomato species.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- stress treatmentse4
- Outcome
- Carotenoid contentse4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two tomato species”
e4“Carotenoid contents significantly increased in all stress treatments in both species (P < 0.01)”
Claim · model-written summary
Ascorbate content decreased during drought stress in tomato.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- drought stresse5
- Outcome
- Ascorbate (ASC) contente5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two tomato species”
e5“Ascorbate (ASC) content decreased during drought stress while increased under Cd stress”
Claim · model-written summary
Ascorbate content increased under Cd stress in tomato.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Cd stresse5
- Outcome
- Ascorbate (ASC) contente5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two tomato species”
e5“Ascorbate (ASC) content decreased during drought stress while increased under Cd stress”
Claim · model-written summary
Catalase and glutathione reductase activities increased under drought stress in L. peruvianum.
- Taxon
- L. peruvianumSolanum peruvianume6
- Treatment
- drought stresse6
- Outcome
- Catalase (CAT) and glutathione reductase (GR) activitiese6
- Direction
- increasede6
Not reportedComparator
Verbatim
e6“Catalase (CAT) and glutathione reductase (GR) activities significantly increased under drought stress in L. peruvianum while decreased in L. esculentum (P < 0.001)”
Claim · model-written summary
Catalase and glutathione reductase activities decreased under drought stress in L. esculentum.
- Taxon
- L. esculentumSolanum lycopersicume6
- Treatment
- drought stresse6
- Outcome
- Catalase (CAT) and glutathione reductase (GR) activitiese6
- Direction
- decreasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Catalase (CAT) and glutathione reductase (GR) activities significantly increased under drought stress in L. peruvianum while decreased in L. esculentum (P < 0.001)”
Claim · model-written summary
Ascorbate peroxidase activity decreased under all stress treatments in both tomato species.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- stress treatmentse7
- Outcome
- Ascorbate peroxidase (APX) activitye7
- Direction
- decreasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two tomato species”
e7“Ascorbate peroxidase (APX) activity decreased under all stress treatments in both species”
Claim · model-written summary
Drought and cadmium stresses increased superoxide dismutase activity in both tomato species.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Drought and Cd stressese0
- Outcome
- superoxide dismutase (SOD) activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two tomato species”
e0“Drought and Cd stresses increased superoxide dismutase (SOD) activity in both species”
Claim · model-written summary
The data show no relation between drought tolerance and the Cd-induced antioxidative defence system.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- a relation between drought tolerance and levels of antioxidative defence systeme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two tomato species”
e1“The present data did not show a relation between drought tolerance and levels of antioxidative defence system that was induced from Cd”
Claim · model-written summary
There is a clear relationship between Cd uptake and drought tolerance of tomato plants.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- a clear relationship between Cd uptake and drought tolerancee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two tomato species”
e1“there is a clear relationship between Cd uptake and drought tolerance of plants”
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