Abstract
Nieman, R. H., Clark, R. A., Pap, D., Ogata, G. and Maas, E. V. 1988. Effects of salt stress on adenine and uridine nucleotide pools, sugar and acid-soluble phosphate in shoots of pepper and safflower.-J. exp. Bot. 39: 301–309. Pepper (Capsicum annuum cv. Yolo wonder) and safflower (Carthamus tinctonus L. cv. Gila) were grown hydroponically and subjected to a salt stress (51 mol m−3 NaCl plus 25.5 mol m−3 CaCl2). Mature photosynthetic source leaves and shoot meristematic sinks (young pepper leaves and safflower buds) were analyzed for nucleotides by high performance liquid chromatography and for hexose and acid-soluble P—pepper was still vegetative whereas safflower had switched to flower bud formation—the salt stress reduced the fresh shoot yield of pepper by nearly two-thirds and of safflower by half. It reduced the ATP pool and ATP/ADP ratio in the source leaves of both species and also in the young pepper leaves. It had little or no effect on ATP or other nucleotide pools in safflower buds. The UDPG pool was not affected in source leaves or safflower buds, but in the young pepper leaves it was reduced by half, along with UTP. These reductions were accompanied by over a 3-fold increase in hexose and a large decrease in ester phosphate. In safflower, on the other hand, salt stress had little or no effect on UDPG, hexose, or ester phosphate in either source leaves or buds. The results suggest that salt stress reduced the growth of pepper because it reduced assimilation of photosynthate, possibly a consequence of reduced UDPG, UTP, and ATP pools in the growing leaves. Salt stress did not so markedly affect assimilation of photosynthate in the more tolerant safflower.
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Claims 12
Claim · model-written summary
Salt stress reduced the fresh shoot yield of pepper by nearly two-thirds.
- Taxon
- Capsicum annuum
Capsicum annuume0 - Material
- Yolo wondere0
- Organ / stage
- shoote1
- Treatment
- salt stresse0
- Outcome
- fresh shoot yielde1
- Direction
- reducede1
- Value
- nearly two-thirdse1
- Setting
- hydroponicallye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pepper (Capsicum annuum cv. Yolo wonder) and safflower (Carthamus tinctonus L. cv. Gila) were grown hydroponically and subjected to a salt stress”
e1“the salt stress reduced the fresh shoot yield of pepper by nearly two-thirds and of safflower by half”
Claim · model-written summary
Salt stress reduced the fresh shoot yield of safflower by half.
- Taxon
- Carthamus tinctonuse0
- Material
- Gilae0
- Organ / stage
- shoote1
- Treatment
- salt stresse0
- Outcome
- fresh shoot yielde1
- Direction
- reducede1
- Value
- halfe1
- Setting
- hydroponicallye0
Not reportedComparator
Verbatim
e0“Pepper (Capsicum annuum cv. Yolo wonder) and safflower (Carthamus tinctonus L. cv. Gila) were grown hydroponically and subjected to a salt stress”
e1“the salt stress reduced the fresh shoot yield of pepper by nearly two-thirds and of safflower by half”
Claim · model-written summary
Salt stress reduced the ATP pool and ATP/ADP ratio in source leaves of pepper.
- Taxon
- Capsicum annuumCapsicum annuume0
- Organ / stage
- source leavese2
- Treatment
- salt stresse0
- Outcome
- ATP pool and ATP/ADP ratioe2
- Direction
- reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pepper (Capsicum annuum cv. Yolo wonder) and safflower (Carthamus tinctonus L. cv. Gila) were grown hydroponically and subjected to a salt stress”
e2“It reduced the ATP pool and ATP/ADP ratio in the source leaves of both species”
Claim · model-written summary
Salt stress reduced the ATP pool and ATP/ADP ratio in source leaves of safflower.
- Taxon
- Carthamus tinctonuse0
- Organ / stage
- source leavese2
- Treatment
- salt stresse0
- Outcome
- ATP pool and ATP/ADP ratioe2
- Direction
- reducede2
Not reportedComparator
Verbatim
e0“Pepper (Capsicum annuum cv. Yolo wonder) and safflower (Carthamus tinctonus L. cv. Gila) were grown hydroponically and subjected to a salt stress”
e2“It reduced the ATP pool and ATP/ADP ratio in the source leaves of both species”
Claim · model-written summary
Salt stress had little or no effect on ATP or other nucleotide pools in safflower buds.
- Taxon
- Carthamus tinctonuse0
- Organ / stage
- safflower budse3
- Treatment
- salt stresse0
- Outcome
- ATP or other nucleotide poolse3
- Direction
- little or no effecte3
Not reportedComparator
Verbatim
e0“Pepper (Capsicum annuum cv. Yolo wonder) and safflower (Carthamus tinctonus L. cv. Gila) were grown hydroponically and subjected to a salt stress”
e3“It had little or no effect on ATP or other nucleotide pools in safflower buds”
Claim · model-written summary
Salt stress did not affect the UDPG pool in source leaves or buds of safflower.
- Taxon
- Carthamus tinctonuse0
- Organ / stage
- source leaves or safflower budse4
- Treatment
- salt stresse0
- Outcome
- UDPG poole4
- Direction
- not affectede4
Not reportedComparator
Verbatim
e0“Pepper (Capsicum annuum cv. Yolo wonder) and safflower (Carthamus tinctonus L. cv. Gila) were grown hydroponically and subjected to a salt stress”
e4“The UDPG pool was not affected in source leaves or safflower buds, but in the young pepper leaves it was reduced by half, along with UTP”
Claim · model-written summary
Salt stress reduced the UDPG pool by half in young leaves of pepper.
- Taxon
- Capsicum annuumCapsicum annuume0
- Organ / stage
- young pepper leavese4
- Treatment
- salt stresse0
- Outcome
- UDPG poole4
- Direction
- reducede4
- Value
- halfe4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pepper (Capsicum annuum cv. Yolo wonder) and safflower (Carthamus tinctonus L. cv. Gila) were grown hydroponically and subjected to a salt stress”
e4“The UDPG pool was not affected in source leaves or safflower buds, but in the young pepper leaves it was reduced by half, along with UTP”
Claim · model-written summary
Salt stress reduced the UTP pool by half in young leaves of pepper.
- Taxon
- Capsicum annuumCapsicum annuume0
- Organ / stage
- young pepper leavese4
- Treatment
- salt stresse0
- Outcome
- UTPe4
- Direction
- reducede4
- Value
- halfe4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pepper (Capsicum annuum cv. Yolo wonder) and safflower (Carthamus tinctonus L. cv. Gila) were grown hydroponically and subjected to a salt stress”
e4“The UDPG pool was not affected in source leaves or safflower buds, but in the young pepper leaves it was reduced by half, along with UTP”
Claim · model-written summary
In pepper, the reductions were accompanied by a more than 3-fold increase in hexose.
Verbatim
e4“The UDPG pool was not affected in source leaves or safflower buds, but in the young pepper leaves it was reduced by half, along with UTP”
e5“These reductions were accompanied by over a 3-fold increase in hexose and a large decrease in ester phosphate”
Claim · model-written summary
In pepper, the reductions were accompanied by a large decrease in ester phosphate.
Verbatim
e4“The UDPG pool was not affected in source leaves or safflower buds, but in the young pepper leaves it was reduced by half, along with UTP”
e5“These reductions were accompanied by over a 3-fold increase in hexose and a large decrease in ester phosphate”
Claim · model-written summary
Salt stress reduced pepper growth, possibly through reduced assimilation of photosynthate linked to lower UDPG, UTP and ATP pools.
Verbatim
e6“The results suggest that salt stress reduced the growth of pepper because it reduced assimilation of photosynthate, possibly a consequence of reduced UDPG, UTP, and ATP pools in the growing leaves”
Claim · model-written summary
Salt stress did not so markedly affect assimilation of photosynthate in the more tolerant safflower.
- Taxon
- safflower
Carthamus tinctoriuse7 - Treatment
- Salt stresse7
- Outcome
- assimilation of photosynthatee7
- Direction
- did not so markedly affecte7
- Qualifier
- more tolerante7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Salt stress did not so markedly affect assimilation of photosynthate in the more tolerant safflower”
The same questions in other papers
salinity · yield · Capsicum annuum (sweet pepper)Results differ
21 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- positive
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See all 25 papers →salinity · physiology: photosynthesis · Carthamus tinctorius (safflower)Positive and negative results
1 paper in the same direction as this paper · 5 in the opposite direction
- negative
- negative
- negative
3 papers more in this group
See all 7 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.