Abstract
Salinity is one of the most important factors that reduce the growth and antioxidant defense of plants. A controlled pot experiment was conducted to investigate the ameliorative effects of jasmonic acid (JA) priming (0, 5, and 10 mM) and humic acid (HA) (0, 3, and 6 g HA kg −1 soil) amendment on antioxidant enzymes and salt tolerance of forage sorghum seedling ( Sorghum bicolor L.) grown under three salinity conditions (0, 100, and 200 mM NaCl). Salinity stress reduced emergence seedling index (ESI), promptness index (PI), emergence stress tolerance index (ESTI), dry weight stress tolerance index (DWSTI), and the activities of the peroxidase (POD) and catalase (CAT) enzymes. The activity of superoxide dismutase (SOD) and malondialdehyde (MDA) content increased with salinity. Application of JA positively affected all parameters except CAT and MDA. Humic acid significantly increased all measured parameters except ESTI, DWSTI, and SOD activity. At the 200 mM NaCl level, JA and HA increased CAT, POD, SOD, ESI, DWSTI, ESTI, PI, and MDA as compared with the control. The application of HA at 6 g kg −1 soil decreased SOD and ESI relative to the control at high salinity. The application of 10 mM JA combined with HA at 6 g kg −1 soil was most effective in alleviating salinity stress. Therefore, the combined application of JA and HA on forage sorghum may improve salt tolerance and increase antioxidant enzymes that alleviate damages caused by salinity stress. Core Ideas Application of jasmonic acid and humic acid (HA) mitigated salinity stress. Jasmonic acid (JA) and HA increased the antioxidant enzymes. Applying a combination of JA and HA at high levels of salinity improved salt tolerance.
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Claims 11
Claim · model-written summary
Salinity reduced sorghum emergence indices.
- Taxon
- Forage Sorghumt0
- Treatment
- Salinity stresse0
- Outcome
- emergence seedling index (ESI), promptness index (PI), emergence stress tolerance index (ESTI)e0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“Salinity stress reduced emergence seedling index (ESI), promptness index (PI), emergence stress tolerance index (ESTI), dry weight stress tolerance index (DWSTI), and the activities of the peroxidase (POD) and catalase (CAT) enzymes.”
t0“Forage Sorghum”
Claim · model-written summary
Salinity reduced dry weight tolerance and antioxidant enzyme activities.
- Taxon
- Forage Sorghumt0
- Treatment
- Salinity stresse0
- Outcome
- dry weight stress tolerance index (DWSTI), and the activities of the peroxidase (POD) and catalase (CAT) enzymese0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“Salinity stress reduced emergence seedling index (ESI), promptness index (PI), emergence stress tolerance index (ESTI), dry weight stress tolerance index (DWSTI), and the activities of the peroxidase (POD) and catalase (CAT) enzymes.”
t0“Forage Sorghum”
Claim · model-written summary
SOD activity and MDA content rose with salinity.
- Taxon
- Forage Sorghumt0
- Treatment
- salinitye0
- Outcome
- activity of superoxide dismutase (SOD) and malondialdehyde (MDA) contente0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“The activity of superoxide dismutase (SOD) and malondialdehyde (MDA) content increased with salinity.”
t0“Forage Sorghum”
Claim · model-written summary
JA positively affected parameters other than CAT and MDA.
- Taxon
- Forage Sorghumt0
- Treatment
- JAe0
- Outcome
- all parameters except CAT and MDAe0
- Direction
- positively affectede0
Not reportedComparator
Verbatim
e0“Application of JA positively affected all parameters except CAT and MDA.”
t0“Forage Sorghum”
Claim · model-written summary
Humic acid increased parameters other than ESTI, DWSTI and SOD activity.
- Taxon
- Forage Sorghumt0
- Treatment
- Humic acide0
- Outcome
- all measured parameters except ESTI, DWSTI, and SOD activitye0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Humic acid significantly increased all measured parameters except ESTI, DWSTI, and SOD activity.”
t0“Forage Sorghum”
Claim · model-written summary
JA increased CAT, POD, SOD at 200 mM NaCl versus control.
Verbatim
e0“At the 200 mM NaCl level, JA and HA increased CAT, POD, SOD, ESI, DWSTI, ESTI, PI, and MDA as compared with the control.”
t0“Forage Sorghum”
Claim · model-written summary
HA increased CAT, POD, SOD at 200 mM NaCl versus control.
Verbatim
e0“At the 200 mM NaCl level, JA and HA increased CAT, POD, SOD, ESI, DWSTI, ESTI, PI, and MDA as compared with the control.”
t0“Forage Sorghum”
Claim · model-written summary
JA increased ESI, DWSTI, ESTI, PI, and MDA at 200 mM NaCl versus control.
Verbatim
e0“At the 200 mM NaCl level, JA and HA increased CAT, POD, SOD, ESI, DWSTI, ESTI, PI, and MDA as compared with the control.”
t0“Forage Sorghum”
Claim · model-written summary
HA increased ESI, DWSTI, ESTI, PI, and MDA at 200 mM NaCl versus control.
Verbatim
e0“At the 200 mM NaCl level, JA and HA increased CAT, POD, SOD, ESI, DWSTI, ESTI, PI, and MDA as compared with the control.”
t0“Forage Sorghum”
Claim · model-written summary
HA at 6 g kg −1 soil decreased SOD and ESI under high salinity.
Verbatim
e0“The application of HA at 6 g kg −1 soil decreased SOD and ESI relative to the control at high salinity.”
t0“Forage Sorghum”
Claim · model-written summary
The combined high dose was most effective in alleviating salinity stress.
- Taxon
- Forage Sorghumt0
- Treatment
- 10 mM JA combined with HA at 6 g kg −1 soile0
- Outcome
- alleviating salinity stresse0
- Direction
- most effectivee0
Not reportedComparator
Verbatim
e0“The application of 10 mM JA combined with HA at 6 g kg −1 soil was most effective in alleviating salinity stress.”
t0“Forage Sorghum”
The same questions in other papers
jasmonic acid · physiology: antioxidant enzymes · SorghumResults agree
1 paper in the same direction as this paper
- positive
salinity · growth · SorghumResults differ
77 papers in the same direction as this paper · 11 in the opposite direction
- negative
- negative
- positive
85 papers more in this group
See all 89 papers →other · physiology: antioxidant enzymes · SorghumResults agree
1 paper in the same direction as this paper
- positive
salinity · tolerance: abiotic · SorghumResults agree
2 papers in the same direction as this paper
- negative
- negative
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.