Abstract
In order to determine the damage repair role of helium-neon (He-Ne) laser on wheat (Triticum aestivum L.) exposed to osmotic stress, 12-d-old seedlings (with two fully expanded leaves) were treated with osmotic stress using 5% (wt/vol), 10% (wt/vol) and 15% (wt/vol) polyethylene glycol (PEG 6000) treatment for 9 d. After 9 d of osmotic stress, a He-Ne laser was employed to irradiate seedlings of spring wheat for 0 min, 1 min and 3 min. Changes in the concentration of malondialdehyde (MDA), hydrogen peroxide (H 2 O 2 ), glutathione (GSH), ascorbate (AsA), the production rate of superoxide radical (O 2 ), the activities of ascorbate peroxidase (APX), peroxidase (POD), catalase (CAT), superoxide dismutase (SOD) and glutathione reductase (GR) were measured to test the effects of laser radiation. The results showed that laser radiation for 3 min conferred tolerance to osmotic stress in wheat seedlings by decreasing the concentration of MDA and the production rate of O 2 , and increasing the activities of SOD and APX and GSH concentration. It was suggested that those changes in MDA, O 2 , antioxidative enzymes and antioxidative compounds were responsible for the increase in osmotic stress tolerance observed in the experiments. Therefore, antioxidative enzymes and antioxidative compounds may participate in the repair effect of laser on seedlings under osmotic stress. This is the first investigation reporting the damage repair role of He-Ne laser on plants exposed to osmotic stress.Key words: Helium-neon laser, wheat (Triticum aestivum L.), osmotic stress, antioxidative system
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 4
Claim · model-written summary
Helium-neon laser radiation for 3 min conferred tolerance to osmotic stress in wheat seedlings.
- Taxon
- wheat
Triticum aestivume0 - Organ / stage
- seedlingse0
- Treatment
- laser radiation for 3 mine0
- Outcome
- tolerance to osmotic stresse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“laser radiation for 3 min conferred tolerance to osmotic stress in wheat seedlings”
Claim · model-written summary
Laser radiation for 3 min decreased the malondialdehyde concentration and the superoxide radical production rate in osmotically stressed wheat seedlings.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- seedlingse0
- Treatment
- laser radiation for 3 mine0
- Outcome
- concentration of MDA and the production rate of O 2e0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“laser radiation for 3 min conferred tolerance to osmotic stress in wheat seedlings by decreasing the concentration of MDA and the production rate of O 2”
Claim · model-written summary
Laser radiation for 3 min increased SOD and APX activities and GSH concentration in osmotically stressed wheat seedlings.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- seedlingse0
- Treatment
- laser radiation for 3 mine0
- Outcome
- activities of SOD and APX and GSH concentratione0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“laser radiation for 3 min conferred tolerance to osmotic stress in wheat seedlings by decreasing the concentration of MDA and the production rate of O 2 , and increasing the activities of SOD and APX and GSH concentration”
Claim · model-written summary
Antioxidative enzymes and antioxidative compounds may participate in the repair effect of laser on wheat seedlings under osmotic stress.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- lasere0
- Outcome
- repair effecte0
- Qualifier
- antioxidative enzymes and antioxidative compoundse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat exposed to osmotic stress”
e0“antioxidative enzymes and antioxidative compounds may participate in the repair effect of laser on seedlings under osmotic stress”
The same questions in other papers
radiation · disease · Triticum aestivum (wheat)Positive and negative results
6 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- no effect
6 papers more in this group
See all 10 papers →radiation · physiology: antioxidant enzymes · Triticum aestivum (wheat)Positive and negative results
9 papers in the same direction as this paper · 5 in the opposite direction
- negative
- negative
- no effect
11 papers more in this group
See all 15 papers →radiation · physiology: oxidative · Triticum aestivum (wheat)Positive and negative results
8 papers in the same direction as this paper · 7 in the opposite direction
- negative
- negative
- no effect
12 papers more in this group
See all 16 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.