Abstract
This paper is inclined to report our study findings on the effect of UV-B radiation (UV-B,280-320 nm) on the water content in the soybean seedling leaves under laboratory conditions.For this purpose,we have adopted the method of hydroponics and UV-B radiation.The levels of UV-B irradiation at about 0.54 kJ·h~(-1)·m~(-2) (T_1) and 1.62 kJ·h~(-1)·m~(-2)(T_2) are determined by the ultraviolet radiac.Irradiating the soybean seedling leaves under the experiment for six hours each day from 9:00 to15:00 and let the process last for about five days,and they would enter the recovering stage.Three sample sets (CK,T_1 and T_2) were used in the experiment.The static experimental results indicate that UV-B radiation helps to reduce the free water content in soybean leaves.To be exact,the rate of free water content to the irreducible water content of UV-B treatments can be made lower than that of CK.Later,the water content in the soybean leaves under test should be let to recover step by step in the recovery stage.Our experiments also demonstrate that UV-B radiation tends to affect free praline and soluble sugar in soybean leaves differently,that is,by promoting the accumulation of free proline and causing the soluble sugar content drop sharply.This study is expected to help to make it clear that the water content in the soybean seedlings leaves had a negative relation with the accumulation of free proline under UV-B radiation.That is to say,the smaller the UV-B radiation dose used to the seedlings,the stronger the relation would be.What's more,the accumulation of free proline proves to help to protect the soybean seedlings to some extent,though it is rather weak.However,the free proline seems,on the whole,a measure of the harm to the seedlings due to the UV-B radiation.Correlation analysis indicates that free proline and suluble sugar were more effective in regulating the water content in the soybean leaves under smaller dose UV-B radiation,though not so effective under the large one.Therefore,this study proves to be helpful for finding an effective solution to protect plants from UV-B radiation.
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Claims 9
Claim · model-written summary
UV-B reduced free water content in soybean leaves.
- Taxon
- soybean
Glycine maxe0 - Treatment
- UV-B radiatione0
- Outcome
- free water contente0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UV-B radiation helps to reduce the free water content in soybean leaves.”
Claim · model-written summary
UV-B treatments lowered the free to irreducible water ratio versus CK.
- Taxon
- soybeanGlycine maxt0
- Treatment
- UV-B treatmentse0
- Outcome
- rate of free water content to the irreducible water contente0
- Direction
- lowere0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the rate of free water content to the irreducible water content of UV-B treatments can be made lower than that of CK.”
t0“soybean seedling leaves”
Claim · model-written summary
Soybean leaf water content recovered gradually during the recovery stage.
- Taxon
- soybeanGlycine maxe0
- Outcome
- water contente0
- Direction
- recover step by stepe0
- Qualifier
- recovery stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the water content in the soybean leaves under test should be let to recover step by step in the recovery stage.”
Claim · model-written summary
UV-B promoted accumulation of free proline in soybean leaves.
- Taxon
- soybeanGlycine maxe0
- Treatment
- UV-B radiatione0
- Outcome
- accumulation of free prolinee0
- Direction
- promotinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UV-B radiation tends to affect free praline and soluble sugar in soybean leaves differently,that is,by promoting the accumulation of free proline and causing the soluble sugar content drop sharply.”
Claim · model-written summary
UV-B sharply reduced soluble sugar content in soybean leaves.
- Taxon
- soybeanGlycine maxe0
- Treatment
- UV-B radiatione0
- Outcome
- soluble sugar contente0
- Direction
- drop sharplye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UV-B radiation tends to affect free praline and soluble sugar in soybean leaves differently,that is,by promoting the accumulation of free proline and causing the soluble sugar content drop sharply.”
Claim · model-written summary
Water content and free proline accumulation were negatively related under UV-B, more strongly at smaller UV-B doses.
- Taxon
- soybeanGlycine maxe0
- Compound
- free prolinee0
- Outcome
- water contente0
- Direction
- negative relatione0
- Qualifier
- smaller the UV-B radiation dosee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the water content in the soybean seedlings leaves had a negative relation with the accumulation of free proline under UV-B radiation.That is to say,the smaller the UV-B radiation dose used to the seedlings,the stronger the relation would be.”
Claim · model-written summary
Free proline accumulation weakly protected soybean seedlings under UV-B.
- Taxon
- soybeanGlycine maxe0
- Compound
- free prolinee0
- Outcome
- protect the soybean seedlingse0
- Qualifier
- rather weake0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the accumulation of free proline proves to help to protect the soybean seedlings to some extent,though it is rather weak.”
Claim · model-written summary
Free proline generally indicated UV-B harm to soybean seedlings.
- Taxon
- soybeanGlycine maxt0
- Compound
- free prolinee0
- Outcome
- harm to the seedlingse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the free proline seems,on the whole,a measure of the harm to the seedlings due to the UV-B radiation.”
t0“soybean seedling leaves”
Claim · model-written summary
Free proline and soluble sugar regulated soybean leaf water content more effectively under smaller than larger UV-B doses.
- Taxon
- soybeanGlycine maxe0
- Compound
- free prolinee0
- Outcome
- water contente0
- Direction
- more effectivee0
- Qualifier
- smaller dose UV-B radiatione0
- Comparator
- large onee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“free proline and suluble sugar were more effective in regulating the water content in the soybean leaves under smaller dose UV-B radiation,though not so effective under the large one.”
The same questions in other papers
uv · soil: physics · Glycine max (soybean)Positive and negative results
1 in the opposite direction
- positive
uv · physiology: osmolytes · Glycine max (soybean)Results agree
3 papers in the same direction as this paper
- negative
- 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.