Abstract
The current study aims to record the role of the pretreatment of Zea mays grains with a He-Ne laser damage repair of ultraviolet (UVA+B) radiation effect. Plants were divided into four groups; control group, group exposed to the He–Ne laser only for 1- 300 seconds, group exposed to UVA+B only and in the fourth group; grains were treated with different He-Ne laser irradiation duration and after 2 weeks were exposed to 3.6 and 7.2 KJ m−2 d−1 UVA+B radiation. Irradiation with He-Ne laser significantly (p≤0.05) increased shoot lengths, number of leaves, shoot biomass (week1), root dry weight, chlorophyll-a, chlorophyll b, and total chlorophyll. Superoxide free radical, hydrogen peroxide and lipid peroxidation was decreased at low doses and increased with higher doses of laser. Various deleterious effects of ultraviolet radiations were recorded in Zea mays including decreased photosynthetic pigments, shoot and root biomass, and root and shoot lengths. The pretreatment with a laser before exposure to UVA+B radiation causes a slight increase in plant length and leaves a number, an increase of root length, while a decrease of shoot/root length and an increase in leaf parameters at some laser treatments. The results revealed that the pretreatment of maize grains with He–Ne laser doses for 10s to 300s alleviated the damaging effects of UV-B radiation in the range of 7.2 KJ m−2 d−1 UVA+B radiation.
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Claims 10
Claim · model-written summary
He-Ne laser irradiation increased shoot length, leaf number, shoot biomass in week 1, and root dry weight.
- Treatment
- He-Ne lasere0
- Outcome
- shoot lengths, number of leaves, shoot biomass (week1), root dry weighte0
- Direction
- increasede0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irradiation with He-Ne laser significantly (p≤0.05) increased shoot lengths, number of leaves, shoot biomass (week1), root dry weight, chlorophyll-a, chlorophyll b, and total chlorophyll.”
t0“Zea mays”
Claim · model-written summary
He-Ne laser irradiation increased chlorophyll a, chlorophyll b, and total chlorophyll.
- Treatment
- He-Ne lasere0
- Outcome
- chlorophyll-a, chlorophyll b, and total chlorophylle0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irradiation with He-Ne laser significantly (p≤0.05) increased shoot lengths, number of leaves, shoot biomass (week1), root dry weight, chlorophyll-a, chlorophyll b, and total chlorophyll.”
t0“Zea mays”
Claim · model-written summary
Low laser doses decreased superoxide free radical, hydrogen peroxide, and lipid peroxidation.
- Treatment
- low dosese0
- Outcome
- Superoxide free radical, hydrogen peroxide and lipid peroxidatione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Superoxide free radical, hydrogen peroxide and lipid peroxidation was decreased at low doses and increased with higher doses of laser.”
t0“Zea mays”
Claim · model-written summary
Higher laser doses increased superoxide free radical, hydrogen peroxide, and lipid peroxidation.
- Treatment
- higher doses of lasere0
- Outcome
- Superoxide free radical, hydrogen peroxide and lipid peroxidatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Superoxide free radical, hydrogen peroxide and lipid peroxidation was decreased at low doses and increased with higher doses of laser.”
t0“Zea mays”
Claim · model-written summary
Ultraviolet radiation decreased photosynthetic pigments, shoot and root biomass, and root and shoot lengths.
- Treatment
- ultraviolet radiationse0
- Outcome
- photosynthetic pigments, shoot and root biomass, and root and shoot lengthse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Various deleterious effects of ultraviolet radiations were recorded in Zea mays including decreased photosynthetic pigments, shoot and root biomass, and root and shoot lengths.”
Claim · model-written summary
Laser pretreatment before UVA+B exposure slightly increased plant length and leaf number.
- Treatment
- pretreatment with a laser before exposure to UVA+B radiatione0
- Outcome
- plant length and leaves a numbere0
- Direction
- slight increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pretreatment with a laser before exposure to UVA+B radiation causes a slight increase in plant length and leaves a number, an increase of root length, while a decrease of shoot/root length and an increase in leaf parameters at some laser treatments.”
t0“Zea mays”
Claim · model-written summary
Laser pretreatment before UVA+B exposure increased root length.
- Treatment
- pretreatment with a laser before exposure to UVA+B radiatione0
- Outcome
- root lengthe0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pretreatment with a laser before exposure to UVA+B radiation causes a slight increase in plant length and leaves a number, an increase of root length, while a decrease of shoot/root length and an increase in leaf parameters at some laser treatments.”
t0“Zea mays”
Claim · model-written summary
Laser pretreatment before UVA+B exposure decreased shoot/root length.
- Treatment
- pretreatment with a laser before exposure to UVA+B radiatione0
- Outcome
- shoot/root lengthe0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pretreatment with a laser before exposure to UVA+B radiation causes a slight increase in plant length and leaves a number, an increase of root length, while a decrease of shoot/root length and an increase in leaf parameters at some laser treatments.”
t0“Zea mays”
Claim · model-written summary
Some laser pretreatments increased leaf parameters under UVA+B exposure.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pretreatment with a laser before exposure to UVA+B radiation causes a slight increase in plant length and leaves a number, an increase of root length, while a decrease of shoot/root length and an increase in leaf parameters at some laser treatments.”
t0“Zea mays”
Claim · model-written summary
He-Ne laser pretreatment at 10 to 300 seconds alleviated damage from 7.2 KJ m−2 d−1 UVA+B radiation.
- Treatment
- He–Ne laser doses for 10s to 300se0
- Outcome
- damaging effects of UV-B radiatione0
- Direction
- alleviatede0
- Qualifier
- 7.2 KJ m−2 d−1 UVA+B radiatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results revealed that the pretreatment of maize grains with He–Ne laser doses for 10s to 300s alleviated the damaging effects of UV-B radiation in the range of 7.2 KJ m−2 d−1 UVA+B radiation.”
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See all 30 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.