Abstract
Cobalt (Co) affords both beneficial as well as toxic effects to plants. The present study was performed with an aim to find out the varietal differences among five tomato cultivars against the Co induced changes in growth, photosynthesis, nitrate reductase (E.C.1.6.6.1), carbonic anhydrase (E.C.4.2.1.1), antioxidative enzymes i.e. peroxidase (E.C.1.11.1.7), catalase (E.C.1.11.1.6), superoxide dismutase (E.C.1.15.1.1) and that of proline content. Seeds of tomato (varieties, K-25, NTS-9, NBR-Uday, Sarvodya, and Malti) were soaked in 0, 100, 200 or 300 µM CoCl2 for 0, 4, 8, 12 h (shotgun approach) and sampled at 30 days after sowing. All the varieties showed significantly different response to different treatment combinations. Despite substantial varietal difference, increased Co concentration caused concomitant decrease in growth, photosynthesis and the activity of nitrate reductase and carbonic anhydrase. However, the activity of antioxidant enzymes and that of proline content increased with the increased concentration of Co as well as duration of soaking in all the varieties. Out of the varieties, K-25 possessed maximum antioxidative enzyme and proline content that represent its most resistant nature against the toxic effect of Co. The order of susceptibility/sensitivity was K-25 > NTS-9 > NBR-Uday > Sarvodya > Malti.
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Claims 9
Claim · model-written summary
Tomato varieties responded significantly differently to cobalt treatment combinations.
- Taxon
- tomato
Solanum lycopersicume1 - Outcome
- response to different treatment combinationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the varieties showed significantly different response to different treatment combinations.”
e1“five tomato cultivars”
Claim · model-written summary
Increasing cobalt concentration decreased tomato growth.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- increased Co concentratione0
- Outcome
- growthe0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased Co concentration caused concomitant decrease in growth, photosynthesis and the activity of nitrate reductase and carbonic anhydrase”
e1“five tomato cultivars”
Claim · model-written summary
Increasing cobalt concentration decreased tomato photosynthesis.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- increased Co concentratione0
- Outcome
- photosynthesise0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased Co concentration caused concomitant decrease in growth, photosynthesis and the activity of nitrate reductase and carbonic anhydrase”
e1“five tomato cultivars”
Claim · model-written summary
Increasing cobalt concentration decreased nitrate reductase activity in tomato.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- increased Co concentratione0
- Gene
- nitrate reductasee0
- Outcome
- activity of nitrate reductasee0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased Co concentration caused concomitant decrease in growth, photosynthesis and the activity of nitrate reductase and carbonic anhydrase”
e1“five tomato cultivars”
Claim · model-written summary
Increasing cobalt concentration decreased carbonic anhydrase activity in tomato.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- increased Co concentratione0
- Gene
- carbonic anhydrasee0
- Outcome
- carbonic anhydrasee0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased Co concentration caused concomitant decrease in growth, photosynthesis and the activity of nitrate reductase and carbonic anhydrase”
e1“five tomato cultivars”
Claim · model-written summary
Antioxidant enzyme activity increased with cobalt concentration and soaking duration in all tomato varieties.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- increased concentration of Co as well as duration of soakinge0
- Outcome
- activity of antioxidant enzymese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activity of antioxidant enzymes and that of proline content increased with the increased concentration of Co as well as duration of soaking in all the varieties”
e1“five tomato cultivars”
Claim · model-written summary
Proline content increased with cobalt concentration and soaking duration in all tomato varieties.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- increased concentration of Co as well as duration of soakinge0
- Outcome
- proline contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activity of antioxidant enzymes and that of proline content increased with the increased concentration of Co as well as duration of soaking in all the varieties”
e1“five tomato cultivars”
Claim · model-written summary
K-25 had the maximum antioxidant enzyme activity and proline content and was judged most cobalt resistant.
- Taxon
- tomatoSolanum lycopersicume1
- Material
- K-25e0
- Outcome
- maximum antioxidative enzyme and proline contente0
- Direction
- maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“K-25 possessed maximum antioxidative enzyme and proline content that represent its most resistant nature against the toxic effect of Co.”
e1“five tomato cultivars”
Claim · model-written summary
The reported susceptibility or sensitivity ordering was K-25 > NTS-9 > NBR-Uday > Sarvodya > Malti.
- Taxon
- tomatoSolanum lycopersicume1
- Outcome
- order of susceptibility/sensitivitye0
- Qualifier
- K-25 > NTS-9 > NBR-Uday > Sarvodya > Maltie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The order of susceptibility/sensitivity was K-25 > NTS-9 > NBR-Uday > Sarvodya > Malti.”
e1“five tomato cultivars”
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