Abstract
The comparative effects of drought stress on seed performance, growth parameters, free proline content, lipid peroxidation, and several antioxidative enzymes activities were studied in both cultivars of Brassica napus L. Drought stress increased mean germination rate and mean of day germination in both cultivars, and its effect was more pronounced in RGS003. The length and dry weight of root increased significantly in both cultivars under drought. RGS003 was more tolerant and obtained more biomass under drought than that of Sarigol. Proline content and pyrroline-5-carboxylate synthetase expression increased in Sarigol under drought. Measurement of malondialdehyde content in seedlings showed that lipid peroxidation was lower in RGS003 than in Sarigol. Antioxidant enzyme activities showed different trends in the two cultivars under drought stress but were higher in RGS003 than in Sarigol. These results suggest that RGS003 is better protected against drought-induced oxidative damage. Lipoxygenase activity only induced under water deficit condition in RGS003. Changes of respiratory enzymes activities of RGS003 subjected to drought stress showed a pattern different with Sarigol. Drought stress induced aconitase activity in RGS003, but it reduced fumarase and succinate dehydrogenase activity in Sarigol. This study showed that RGS003 exhibits a better protection mechanism against oxidative damage and RGS003 is more drought-tolerant than Sarigol possibly by maintaining and/or increasing growth parameters, antioxidant enzyme activities, and respiratory enzymes activities.
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Claims 10
Claim · model-written summary
Drought increased mean germination rate and mean day of germination in both canola cultivars, more strongly in RGS003.
- Taxon
- Brassica napus L.
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse1 - Treatment
- Drought stresse0
- Outcome
- mean germination rate and mean of day germinatione0
- Direction
- increasede0
- Qualifier
- more pronounced in RGS003e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“Drought stress increased mean germination rate and mean of day germination in both cultivars, and its effect was more pronounced in RGS003.”
e1“Brassica napus L.”
Claim · model-written summary
Drought significantly increased root length and dry weight in both canola cultivars.
- Taxon
- Brassica napus L.Brassica napuse1
- Treatment
- droughte0
- Outcome
- length and dry weight of roote0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The length and dry weight of root increased significantly in both cultivars under drought.”
e1“Brassica napus L.”
Claim · model-written summary
RGS003 had more biomass and greater drought tolerance than Sarigol under drought.
- Taxon
- Brassica napus L.Brassica napuse1
- Material
- RGS003e0
- Outcome
- biomasse0
- Direction
- moree0
- Qualifier
- under droughte0
- Comparator
- Sarigole0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RGS003 was more tolerant and obtained more biomass under drought than that of Sarigol.”
e1“Brassica napus L.”
Claim · model-written summary
Drought increased proline content and pyrroline-5-carboxylate synthetase expression in Sarigol.
- Taxon
- Brassica napus L.Brassica napuse1
- Material
- Sarigole0
- Treatment
- droughte0
- Gene
- pyrroline-5-carboxylate synthetasee0
- Outcome
- Proline content and pyrroline-5-carboxylate synthetase expressione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Proline content and pyrroline-5-carboxylate synthetase expression increased in Sarigol under drought.”
e1“Brassica napus L.”
Claim · model-written summary
Seedling lipid peroxidation was lower in RGS003 than Sarigol.
- Taxon
- Brassica napus L.Brassica napuse1
- Material
- RGS003e0
- Outcome
- lipid peroxidatione0
- Direction
- lowere0
- Comparator
- Sarigole0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lipid peroxidation was lower in RGS003 than in Sarigol”
e1“Brassica napus L.”
Claim · model-written summary
Antioxidant enzyme activity under drought was higher in RGS003 than Sarigol.
- Taxon
- Brassica napus L.Brassica napuse1
- Material
- RGS003e0
- Outcome
- Antioxidant enzyme activitiese0
- Direction
- highere0
- Comparator
- Sarigole0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Antioxidant enzyme activities showed different trends in the two cultivars under drought stress but were higher in RGS003 than in Sarigol.”
e1“Brassica napus L.”
Claim · model-written summary
Water deficit induced lipoxygenase activity only in RGS003.
- Taxon
- Brassica napus L.Brassica napuse1
- Material
- RGS003e0
- Treatment
- water deficit conditione0
- Gene
- Lipoxygenasee0
- Outcome
- Lipoxygenase activitye0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lipoxygenase activity only induced under water deficit condition in RGS003.”
e1“Brassica napus L.”
Claim · model-written summary
Drought induced aconitase activity in RGS003.
- Taxon
- Brassica napus L.Brassica napuse1
- Material
- RGS003e0
- Treatment
- Drought stresse0
- Gene
- aconitasee0
- Outcome
- aconitase activitye0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress induced aconitase activity in RGS003”
e1“Brassica napus L.”
Claim · model-written summary
Drought reduced fumarase and succinate dehydrogenase activity in Sarigol.
- Taxon
- Brassica napus L.Brassica napuse1
- Material
- Sarigole0
- Treatment
- Drought stresse0
- Outcome
- fumarase and succinate dehydrogenase activitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress induced aconitase activity in RGS003, but it reduced fumarase and succinate dehydrogenase activity in Sarigol.”
e1“Brassica napus L.”
Claim · model-written summary
The authors conclude that RGS003 is better protected from drought-induced oxidative damage than Sarigol.
- Taxon
- Brassica napus L.Brassica napuse1
- Material
- RGS003e0
- Outcome
- drought-induced oxidative damagee0
- Direction
- better protectede0
- Comparator
- Sarigole2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RGS003 is better protected against drought-induced oxidative damage”
e1“Brassica napus L.”
e2“RGS003 is more drought-tolerant than Sarigol”
The same questions in other papers
drought · soil: biology · Brassica napus (oilseed rape)Positive and negative results
4 in the opposite direction
- positive
- positive
- positive
1 paper more in this group
See all 5 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.