Abstract
In this study nodulated cowpea plants were exposed to a progressive drought-stress followed by rewatering in orderto establish mechanisms related to the nodule sensitivity to N2 fixation. Water stress caused a prominent decreasein the dry matter of leaf and nodule in contrast to the root growth that was stimulated. The drought-stressed plantsshowed a great decline in the ureide concentration of xylem sap whilst the concentration of the nodule leghaemoglobindecreased slightly. The stressed-nodules had significant accumulation of soluble carbohydrates in parallel to intenseincrease in the concentration of ureide, total amino acid and proline. After two days rewatering, the leaf growthshowed a significant enhancement whereas in nodules a poor recovery was observed. In addition, the nodule N2 fixationcapacity did not improve after rehydration whereas the sap ureide experienced only a slight recovery and surprisinglythe content of nodule soluble protein continued to drop. In contrast, a significant recovery in the nodule leghaemoglobincontent was observed. Rewatering greatly induced depletion of both sucrose and total soluble sugarcontents of nodules that were associated to a great decrease in the concentration of ureide, proline and amino acids,especially in leaves. Conversely the poor recovery of cowpea nodules after rehydration was apparently related to a carbohydrateshortage.
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Claims 20
Claim · model-written summary
Water stress was associated with decreasein in dry matter of leaf and nodule.
- Taxon
- cowpea plants
Vigna unguiculatat0 - Treatment
- Water stresse0
- Outcome
- dry matter of leaf and nodulee0
- Direction
- decreaseine0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress caused a prominent decreasein the dry matter of leaf and nodule in contrast to the root growth that was stimulated.”
t0“cowpea plants”
Claim · model-written summary
Water stress was associated with stimulated in root growth.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- Water stresse0
- Outcome
- root growthe0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress caused a prominent decreasein the dry matter of leaf and nodule in contrast to the root growth that was stimulated.”
t0“cowpea plants”
Claim · model-written summary
drought-stressed was associated with decline in ureide concentration of xylem sap.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- drought-stressede0
- Outcome
- ureide concentration of xylem sape0
- Direction
- declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The drought-stressed plantsshowed a great decline in the ureide concentration of xylem sap whilst the concentration of the nodule leghaemoglobindecreased slightly.”
t0“cowpea plants”
Claim · model-written summary
drought-stressed was associated with decreased in concentration of the nodule leghaemoglobin.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- drought-stressede0
- Outcome
- concentration of the nodule leghaemoglobine0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The drought-stressed plantsshowed a great decline in the ureide concentration of xylem sap whilst the concentration of the nodule leghaemoglobindecreased slightly.”
t0“cowpea plants”
Claim · model-written summary
stressed-nodules was associated with accumulation in soluble carbohydrates.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- stressed-nodulese0
- Outcome
- soluble carbohydratese0
- Direction
- accumulatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The stressed-nodules had significant accumulation of soluble carbohydrates in parallel to intenseincrease in the concentration of ureide, total amino acid and proline.”
t0“cowpea plants”
Claim · model-written summary
stressed-nodules was associated with increase in concentration of ureide.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- stressed-nodulese0
- Outcome
- concentration of ureidee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The stressed-nodules had significant accumulation of soluble carbohydrates in parallel to intenseincrease in the concentration of ureide, total amino acid and proline.”
t0“cowpea plants”
Claim · model-written summary
stressed-nodules was associated with increase in total amino acid.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- stressed-nodulese0
- Outcome
- total amino acide0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The stressed-nodules had significant accumulation of soluble carbohydrates in parallel to intenseincrease in the concentration of ureide, total amino acid and proline.”
t0“cowpea plants”
Claim · model-written summary
stressed-nodules was associated with increase in proline.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- stressed-nodulese0
- Outcome
- prolinee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The stressed-nodules had significant accumulation of soluble carbohydrates in parallel to intenseincrease in the concentration of ureide, total amino acid and proline.”
t0“cowpea plants”
Claim · model-written summary
rewatering was associated with enhancement in leaf growth.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- rewateringe0
- Outcome
- leaf growthe0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After two days rewatering, the leaf growthshowed a significant enhancement whereas in nodules a poor recovery was observed.”
t0“cowpea plants”
Claim · model-written summary
rewatering was associated with poor recovery in nodules.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- rewateringe0
- Outcome
- nodulese0
- Direction
- poor recoverye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After two days rewatering, the leaf growthshowed a significant enhancement whereas in nodules a poor recovery was observed.”
t0“cowpea plants”
Claim · model-written summary
rehydration was associated with did not improve in nodule N2 fixationcapacity.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- rehydratione0
- Outcome
- nodule N2 fixationcapacitye0
- Direction
- did not improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the nodule N2 fixationcapacity did not improve after rehydration whereas the sap ureide experienced only a slight recovery and surprisinglythe content of nodule soluble protein continued to drop.”
t0“cowpea plants”
Claim · model-written summary
rehydration was associated with slight recovery in sap ureide.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- rehydratione0
- Outcome
- sap ureidee0
- Direction
- slight recoverye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the nodule N2 fixationcapacity did not improve after rehydration whereas the sap ureide experienced only a slight recovery and surprisinglythe content of nodule soluble protein continued to drop.”
t0“cowpea plants”
Claim · model-written summary
rehydration was associated with continued to drop in content of nodule soluble protein.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- rehydratione0
- Outcome
- content of nodule soluble proteine0
- Direction
- continued to drope0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the nodule N2 fixationcapacity did not improve after rehydration whereas the sap ureide experienced only a slight recovery and surprisinglythe content of nodule soluble protein continued to drop.”
t0“cowpea plants”
Claim · model-written summary
rewatering was associated with recovery in nodule leghaemoglobincontent.
- Taxon
- cowpea plantsVigna unguiculatat0
- Outcome
- nodule leghaemoglobincontente0
- Direction
- recoverye0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a significant recovery in the nodule leghaemoglobincontent was observed.”
t0“cowpea plants”
Claim · model-written summary
Rewatering was associated with depletion in sucrose.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- Rewateringe0
- Outcome
- sucrosee0
- Direction
- depletione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rewatering greatly induced depletion of both sucrose and total soluble sugarcontents of nodules that were associated to a great decrease in the concentration of ureide, proline and amino acids,especially in leaves.”
t0“cowpea plants”
Claim · model-written summary
Rewatering was associated with depletion in total soluble sugarcontents of nodules.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- Rewateringe0
- Outcome
- total soluble sugarcontents of nodulese0
- Direction
- depletione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rewatering greatly induced depletion of both sucrose and total soluble sugarcontents of nodules that were associated to a great decrease in the concentration of ureide, proline and amino acids,especially in leaves.”
t0“cowpea plants”
Claim · model-written summary
Rewatering was associated with decrease in concentration of ureide.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- Rewateringe0
- Outcome
- concentration of ureidee0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rewatering greatly induced depletion of both sucrose and total soluble sugarcontents of nodules that were associated to a great decrease in the concentration of ureide, proline and amino acids,especially in leaves.”
t0“cowpea plants”
Claim · model-written summary
Rewatering was associated with decrease in proline.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- Rewateringe0
- Outcome
- prolinee0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rewatering greatly induced depletion of both sucrose and total soluble sugarcontents of nodules that were associated to a great decrease in the concentration of ureide, proline and amino acids,especially in leaves.”
t0“cowpea plants”
Claim · model-written summary
Rewatering was associated with decrease in amino acids.
- Taxon
- cowpea plantsVigna unguiculatat0
- Treatment
- Rewateringe0
- Outcome
- amino acidse0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rewatering greatly induced depletion of both sucrose and total soluble sugarcontents of nodules that were associated to a great decrease in the concentration of ureide, proline and amino acids,especially in leaves.”
t0“cowpea plants”
Claim · model-written summary
Poor nodule recovery after rehydration was apparently related to carbohydrate shortage.
- Taxon
- cowpeaVigna unguiculatae0
- Outcome
- poor recovery of cowpea nodulese0
- Qualifier
- carbohydrateshortagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conversely the poor recovery of cowpea nodules after rehydration was apparently related to a carbohydrateshortage.”
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See all 6 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.