Abstract
Salinity stress is one of the main limiting factors for optimum agricultural productivity of safflower, Carthamus tinctorius L., in arid and semi-arid regions. It could leads to significant changes in plant biochemical, physiological, and growth traits. Salinity induced endogenous rise in jasmonic acid and its methyl esters (MeJA) has been reported. In the present study, effects of salinity stress (6 and 12 ds m-1) and the exogenous application of MeJA (0.1 and 0.5 mM) on the leaf number, shoot fresh weight, shoot length, chlorophyll a/b, soluble sugar, proline, and malondialdehyde (MDA) contents were investigated in two safflower varieties (Isfahan and IL111). Salinity stress negatively affected the growth of both varieties. Lipid peroxidation was not observed in Isfahan variety, but it significantly increased in the salinity resistant safflower, IL111. Soluble sugar and proline as the important osmoprotectants and free radical scavengers were elevated by salinity stress. Exogenous application of MeJA to the salinity stress-imposed plants slightly improved the growth due to inductions in the rate of photosynthesis; however, MeJA application impaired the growth of non-stressed plants because of induction of stomatal closure and as a result reduced photosynthesis.
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Claims 8
Claim · model-written summary
Salinity stress reduced growth in both safflower varieties.
- Taxon
- safflower
Carthamus tinctoriuse1 - Material
- Isfahan and IL111e1
- Treatment
- Salinity stresse0
- Outcome
- growthe0
- Direction
- negatively affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity stress negatively affected the growth of both varieties.”
e1“two safflower varieties (Isfahan and IL111)”
Claim · model-written summary
Salinity did not produce observed lipid peroxidation in Isfahan safflower.
- Taxon
- safflowerCarthamus tinctoriuse1
- Material
- Isfahane0
- Treatment
- Salinity stresse2
- Outcome
- Lipid peroxidatione0
- Direction
- not observede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lipid peroxidation was not observed in Isfahan variety”
e1“two safflower varieties (Isfahan and IL111)”
e2“Salinity stress negatively affected the growth of both varieties.”
Claim · model-written summary
Salinity significantly increased lipid peroxidation in IL111 safflower.
- Taxon
- safflowerCarthamus tinctoriuse0
- Material
- IL111e0
- Treatment
- Salinity stresse1
- Outcome
- Lipid peroxidatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lipid peroxidation was not observed in Isfahan variety, but it significantly increased in the salinity resistant safflower, IL111.”
e1“Salinity stress negatively affected the growth of both varieties.”
Claim · model-written summary
Salinity raised soluble sugar and proline in safflower.
- Taxon
- Carthamus tinctoriusCarthamus tinctoriust0
- Treatment
- salinity stresse0
- Outcome
- Soluble sugar and prolinee0
- Direction
- elevatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soluble sugar and proline as the important osmoprotectants and free radical scavengers were elevated by salinity stress.”
t0“Carthamus tinctorius Varieties”
Claim · model-written summary
Methyl jasmonate slightly improved growth of salt stressed safflower.
- Taxon
- Carthamus tinctoriusCarthamus tinctoriust0
- Treatment
- Exogenous application of MeJAe0
- Outcome
- growthe0
- Direction
- improvede0
- Qualifier
- salinity stress-imposed plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous application of MeJA to the salinity stress-imposed plants slightly improved the growth”
t0“Carthamus tinctorius Varieties”
Claim · model-written summary
Methyl jasmonate impaired growth of nonstressed safflower.
- Taxon
- Carthamus tinctoriusCarthamus tinctoriust0
- Treatment
- MeJA applicatione0
- Outcome
- growthe0
- Direction
- impairede0
- Qualifier
- non-stressed plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA application impaired the growth of non-stressed plants”
t0“Carthamus tinctorius Varieties”
Claim · model-written summary
Methyl jasmonate induced photosynthesis in salinity stressed safflower, accounting for growth improvement.
- Taxon
- Carthamus tinctoriusCarthamus tinctoriust0
- Treatment
- MeJAe0
- Outcome
- rate of photosynthesise0
- Direction
- inductionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous application of MeJA to the salinity stress-imposed plants slightly improved the growth due to inductions in the rate of photosynthesis”
t0“Carthamus tinctorius Varieties”
Claim · model-written summary
Methyl jasmonate induced stomatal closure and reduced photosynthesis in nonstressed safflower.
- Taxon
- Carthamus tinctoriusCarthamus tinctoriust0
- Treatment
- MeJA applicatione0
- Outcome
- photosynthesise0
- Direction
- reducede0
- Qualifier
- induction of stomatal closuree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA application impaired the growth of non-stressed plants because of induction of stomatal closure and as a result reduced photosynthesis.”
t0“Carthamus tinctorius Varieties”
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