Abstract
Two cultivars of Cicer arietinum with differential tolerance to salinity have been compared by analysing growth, photosynthesis, nodulation, nitrogenase activity, and carbon metabolism in the nodule cytosol. The aim was to help elucidate the relationships between, on the one hand, sucrose and malate metabolism in nodules and, on the other, the inhibition of nitrogen fixation under salt stress. Chick-pea cultivars Pedrosillano (sensitive) and ILC1919 (tolerant) inoculated with Mesorhizobium ciceri strain Ch-191 were grown in a controlled environmental chamber and were treated with salt (0, 50, 75, and 100 mM NaCl) from sowing to harvest time (28 d). Plant growth and photo- synthesis were more affected by salt in Pedrosillano than in ILC1919. Also the effect of salt on nodulation and nitrogen fixation was much more pronounced in Pedrosillano. The increase in nodular mass in ILC1919 can partially counteract the inhibition of nitrogenase activity. The enzymes of sucrose breakdown were inhibited by NaCl, but in ILC1919 a rise in alkaline invertase was observed with salinity, which could compensate for the lack of the sucrose synthase hydrolytic activity. The activity of PEPC was stimulated by salt in ILC1919. Also, this cultivar showed higher malate concentrations in root nodules.
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Claims 7
Claim · model-written summary
Salt affected growth and photosynthesis more in Pedrosillano than ILC1919.
- Taxon
- Cicer arietinum
Cicer arietinumt0 - Material
- Pedrosillanoe0
- Treatment
- salte0
- Outcome
- Plant growth and photo- synthesise0
- Direction
- more affectede0
- Comparator
- ILC1919e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant growth and photo- synthesis were more affected by salt in Pedrosillano than in ILC1919.”
t0“Cicer arietinum”
Claim · model-written summary
Salt affected nodulation and nitrogen fixation more in Pedrosillano.
- Taxon
- Cicer arietinumCicer arietinumt0
- Material
- Pedrosillanoe0
- Treatment
- salte0
- Outcome
- nodulation and nitrogen fixatione0
- Direction
- much more pronouncede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Also the effect of salt on nodulation and nitrogen fixation was much more pronounced in Pedrosillano.”
t0“Cicer arietinum”
Claim · model-written summary
Increased nodular mass in ILC1919 partly counteracted nitrogenase inhibition.
- Taxon
- Cicer arietinumCicer arietinumt0
- Material
- ILC1919e0
- Outcome
- inhibition of nitrogenase activitye0
- Qualifier
- increase in nodular masse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase in nodular mass in ILC1919 can partially counteract the inhibition of nitrogenase activity.”
t0“Cicer arietinum”
Claim · model-written summary
NaCl inhibited enzymes of sucrose breakdown.
- Taxon
- Cicer arietinumCicer arietinumt0
- Treatment
- NaCle0
- Outcome
- enzymes of sucrose breakdowne0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The enzymes of sucrose breakdown were inhibited by NaCl”
t0“Cicer arietinum”
Claim · model-written summary
Alkaline invertase rose with salinity in ILC1919.
- Taxon
- Cicer arietinumCicer arietinumt0
- Material
- ILC1919e0
- Treatment
- salinitye0
- Gene
- alkaline invertasee0
- Outcome
- alkaline invertasee0
- Direction
- risee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in ILC1919 a rise in alkaline invertase was observed with salinity”
t0“Cicer arietinum”
Claim · model-written summary
Salt stimulated PEPC activity in ILC1919.
- Taxon
- Cicer arietinumCicer arietinumt0
- Material
- ILC1919e0
- Treatment
- salte0
- Gene
- PEPCe0
- Outcome
- activity of PEPCe0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activity of PEPC was stimulated by salt in ILC1919.”
t0“Cicer arietinum”
Claim · model-written summary
ILC1919 had higher malate concentrations in root nodules.
- Taxon
- Cicer arietinumCicer arietinumt0
- Material
- ILC1919t1
- Organ / stage
- root nodulese0
- Outcome
- malate concentrationse0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Also, this cultivar showed higher malate concentrations in root nodules.”
t0“Cicer arietinum”
t1“in ILC1919 a rise in alkaline invertase”
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sodium chloride · physiology: enzyme activity · Cicer arietinum (chickpea)Results agree
1 paper in the same direction as this paper
- negative
salinity · symbiosis · Cicer arietinum (chickpea)Results differ
12 papers in the same direction as this paper · 2 in the opposite direction
- positive
- negative
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See all 15 papers →salinity · growth · Cicer arietinum (chickpea)Results differ
59 papers in the same direction as this paper · 6 in the opposite direction
- negative
- positive
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See all 66 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.