Abstract
In order to determine the mechanism of laser-enhanced chilling tolerance in wheat (Triticum aestivum L.) seedlings, the seeds were exposed to different treatments, and some physiological and biochemical parameters were measured in 5-day-old seedlings. The results showed that in wheat seedlings subjected to 1-aminocyclopropane-1-carboxylic acid (ACC) followed by chilling stress (CS), the concentrations of H2O2, O2 .− and MDA were lower, while the activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), as well as the soluble protein content (SPC) and the seedling length (SL) were higher than those in chilling stress treatment. When wheat seedlings were subjected to aminooxyacetic acid (AOA) followed by chilling stress, the results were different from those in which the seedlings were subjected to ACC. Although ACC and AOA treatments followed by laser irradiation led to an increase in the aforementioned enzyme activities, SPC, and SL, with a simultaneous decrease in concentrations of H2O2, O2 .−, and MDA, the effect of ACC treatment followed by laser irradiation was more favorable than that of AOA treatment followed by laser light. Similarly, the oxidative damage induced by chilling stress was alleviated in treatment with ACC+LR and AOA+LR, but alleviation effects of ACC+LR+CS were more prominent than in the treatment AOA+LR+CS. These results suggest that the laser light and ethylene have a positive synergistic effect, thus enhancing chilling tolerance in wheat seedlings.
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Claims 8
Claim · model-written summary
ACC pretreatment followed by chilling stress lowered H2O2, O2.− and MDA concentrations compared with chilling stress alone.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- 1-aminocyclopropane-1-carboxylic acid (ACC)e0
- Outcome
- concentrations of H2O2, O2 .− and MDAe0
- Direction
- lowere0
- Comparator
- chilling stress treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in wheat seedlings subjected to 1-aminocyclopropane-1-carboxylic acid (ACC) followed by chilling stress (CS), the concentrations of H2O2, O2 .− and MDA were lower”
e1“the activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), as well as the soluble protein content (SPC) and the seedling length (SL) were higher than those in chilling stress treatment”
Claim · model-written summary
ACC pretreatment followed by chilling stress raised SOD, POD and CAT activities compared with chilling stress alone.
- Taxon
- wheatTriticum aestivume0
- Treatment
- 1-aminocyclopropane-1-carboxylic acid (ACC)e0
- Outcome
- activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT)e1
- Direction
- highere1
- Comparator
- chilling stress treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in wheat seedlings subjected to 1-aminocyclopropane-1-carboxylic acid (ACC) followed by chilling stress (CS), the concentrations of H2O2, O2 .− and MDA were lower”
e1“the activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), as well as the soluble protein content (SPC) and the seedling length (SL) were higher than those in chilling stress treatment”
Claim · model-written summary
ACC pretreatment followed by chilling stress raised soluble protein content and seedling length compared with chilling stress alone.
- Taxon
- wheatTriticum aestivume0
- Treatment
- 1-aminocyclopropane-1-carboxylic acid (ACC)e0
- Outcome
- soluble protein content (SPC) and the seedling length (SL)e1
- Direction
- highere1
- Comparator
- chilling stress treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in wheat seedlings subjected to 1-aminocyclopropane-1-carboxylic acid (ACC) followed by chilling stress (CS), the concentrations of H2O2, O2 .− and MDA were lower”
e1“the activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), as well as the soluble protein content (SPC) and the seedling length (SL) were higher than those in chilling stress treatment”
Claim · model-written summary
ACC and AOA pretreatments followed by laser irradiation increased enzyme activities.
- Taxon
- wheatTriticum aestivume0
- Treatment
- ACC and AOA treatments followed by laser irradiatione4
- Outcome
- enzyme activitiese4
- Direction
- increasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in wheat seedlings subjected to 1-aminocyclopropane-1-carboxylic acid (ACC) followed by chilling stress (CS), the concentrations of H2O2, O2 .− and MDA were lower”
e4“Although ACC and AOA treatments followed by laser irradiation led to an increase in the aforementioned enzyme activities, SPC, and SL, with a simultaneous decrease in concentrations of H2O2, O2 .−, and MDA, the effect of ACC treatment followed by laser irradiation was more favorable than that of AOA treatment followed by laser light”
Claim · model-written summary
ACC and AOA pretreatments followed by laser irradiation decreased H2O2, O2.− and MDA concentrations.
- Taxon
- wheatTriticum aestivume0
- Treatment
- ACC and AOA treatments followed by laser irradiatione4
- Outcome
- concentrations of H2O2, O2 .−, and MDAe4
- Direction
- decreasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in wheat seedlings subjected to 1-aminocyclopropane-1-carboxylic acid (ACC) followed by chilling stress (CS), the concentrations of H2O2, O2 .− and MDA were lower”
e4“Although ACC and AOA treatments followed by laser irradiation led to an increase in the aforementioned enzyme activities, SPC, and SL, with a simultaneous decrease in concentrations of H2O2, O2 .−, and MDA, the effect of ACC treatment followed by laser irradiation was more favorable than that of AOA treatment followed by laser light”
Claim · model-written summary
ACC treatment followed by laser irradiation was more favorable than AOA treatment followed by laser light.
- Taxon
- wheatTriticum aestivume0
- Treatment
- ACC treatment followed by laser irradiatione3
- Outcome
- effecte3
- Direction
- more favorablee3
- Comparator
- AOA treatment followed by laser lighte3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in wheat seedlings subjected to 1-aminocyclopropane-1-carboxylic acid (ACC) followed by chilling stress (CS), the concentrations of H2O2, O2 .− and MDA were lower”
e3“the effect of ACC treatment followed by laser irradiation was more favorable than that of AOA treatment followed by laser light”
Claim · model-written summary
ACC combined with laser and chilling stress alleviated oxidative damage more than AOA combined with laser and chilling stress.
- Taxon
- wheatTriticum aestivume0
- Treatment
- ACC+LR+CSe5
- Outcome
- alleviation effectse5
- Direction
- more prominente5
- Comparator
- AOA+LR+CSe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in wheat seedlings subjected to 1-aminocyclopropane-1-carboxylic acid (ACC) followed by chilling stress (CS), the concentrations of H2O2, O2 .− and MDA were lower”
e5“alleviation effects of ACC+LR+CS were more prominent than in the treatment AOA+LR+CS”
Claim · model-written summary
Laser light and ethylene have a positive synergistic effect that enhances chilling tolerance in wheat seedlings.
- Taxon
- wheatTriticum aestivume6
- Treatment
- laser light and ethylenee6
- Outcome
- chilling tolerancee6
- Direction
- enhancinge6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“These results suggest that the laser light and ethylene have a positive synergistic effect, thus enhancing chilling tolerance in wheat seedlings”
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