Abstract
Introduction: UltraViolet- Biological (UV-B) plays an important role in plant growth and the formation of nutrients, especially secondary metabolites. Methods: To investigate the phenotypic changes, physiological responses, and internal genes expression of potatoes under enhanced UV-B radiation, two Yunnan native pigmented potatoes varieties named "Huaxinyangyu" and "Jianchuanhong" were exposed to different UV-B doses during whole growth duration. Results: Pearson correlation analysis and principal component analysis showed that the agronomic characters (i.e. plant height, pitch, stem diameter, and root shoot ratio) of plants treated with low dose ultraviolet (T1) did not change significantly compared with the absence of ultraviolet radiation (CK), even unit yield increased slightly; Similarly, under low UV-B radiation, photosynthetic and physiological parameters (photosynthetic rate, stomatal conductance, respiration rate, and transpiration rate) of leaves were significantly increased. In addition, low-dose UV-B treatment promoted the synthesis of tuber nutrients (e.g. phenols, chlorogenic acids, flavonoids, vitamin C, anthocyanins) and increased the expression of structural genes for anthocyanin synthesis. The number of nutrients and gene expression in tubers raised by the "Huaxinyangyu" was the highest at 84 days, and "Jianchuanhong" was the highest at 72 days. However, the higher dose of UV-B radiation (T2) will cause greater damage to the pigmented potatoes plants, making the plants reduce the yield, and significantly reduce the tuber nutrients. Discussion: This study showed that proper ultraviolet radiation will not harm pigmented potatoes, but also improve their oxidative stress tolerance, increase the structure genes expression of anthocyanins and continuously synthesize beneficial substances to improve the yield and quality of potato tubers.
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Claims 10
Claim · model-written summary
Low UV-B did not significantly change agronomic characters versus no UV.
- Taxon
- potatoes
Solanum tuberosumt0 - Treatment
- low dose ultraviolet (T1)e0
- Outcome
- plant height, pitch, stem diameter, and root shoot ratioe0
- Direction
- did not changee0
- Comparator
- absence of ultraviolet radiation (CK)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the agronomic characters (i.e. plant height, pitch, stem diameter, and root shoot ratio) of plants treated with low dose ultraviolet (T1) did not change significantly compared with the absence of ultraviolet radiation (CK)”
t0“pigmented potatoes”
e1“plants treated with low dose ultraviolet (T1)”
Claim · model-written summary
Low UV-B slightly increased unit yield.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- low dose ultraviolet (T1)e1
- Outcome
- unit yielde0
- Direction
- increasede0
- Qualifier
- slightlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“even unit yield increased slightly”
t0“pigmented potatoes”
e1“plants treated with low dose ultraviolet (T1)”
Claim · model-written summary
Low UV-B significantly increased four leaf gas exchange parameters.
- Taxon
- potatoesSolanum tuberosumt0
- Organ / stage
- leavese0
- Treatment
- low UV-B radiatione0
- Outcome
- photosynthetic rate, stomatal conductance, respiration rate, and transpiration ratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under low UV-B radiation, photosynthetic and physiological parameters (photosynthetic rate, stomatal conductance, respiration rate, and transpiration rate) of leaves were significantly increased”
t0“pigmented potatoes”
e1“plants treated with low dose ultraviolet (T1)”
Claim · model-written summary
Low UV-B promoted tuber nutrient synthesis.
- Taxon
- potatoesSolanum tuberosumt0
- Organ / stage
- tubere0
- Treatment
- low-dose UV-B treatmente0
- Outcome
- tuber nutrientse0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low-dose UV-B treatment promoted the synthesis of tuber nutrients (e.g. phenols, chlorogenic acids, flavonoids, vitamin C, anthocyanins)”
t0“pigmented potatoes”
e1“plants treated with low dose ultraviolet (T1)”
Claim · model-written summary
Low UV-B increased expression of anthocyanin synthesis structural genes.
- Taxon
- potatoesSolanum tuberosumt0
- Organ / stage
- tubere0
- Treatment
- low-dose UV-B treatmente0
- Outcome
- expression of structural genes for anthocyanin synthesise0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low-dose UV-B treatment promoted the synthesis of tuber nutrients (e.g. phenols, chlorogenic acids, flavonoids, vitamin C, anthocyanins) and increased the expression of structural genes for anthocyanin synthesis”
t0“pigmented potatoes”
e1“plants treated with low dose ultraviolet (T1)”
Claim · model-written summary
Huaxinyangyu nutrient amount and gene expression peaked at 84 days.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- Huaxinyangyue0
- Outcome
- number of nutrients and gene expression in tuberse0
- Direction
- higheste0
- Value
- 84 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of nutrients and gene expression in tubers raised by the "Huaxinyangyu" was the highest at 84 days”
t0“pigmented potatoes”
e1“plants treated with low dose ultraviolet (T1)”
Claim · model-written summary
Jianchuanhong nutrient amount and gene expression peaked at 72 days.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- Jianchuanhonge0
- Outcome
- higheste0
- Direction
- higheste0
- Value
- 72 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“"Jianchuanhong" was the highest at 72 days”
t0“pigmented potatoes”
e1“plants treated with low dose ultraviolet (T1)”
Claim · model-written summary
Higher UV-B reduced yield.
- Taxon
- pigmented potatoese0
- Treatment
- higher dose of UV-B radiation (T2)e0
- Outcome
- yielde0
- Direction
- reducee0
Not reportedComparator
Verbatim
e0“higher dose of UV-B radiation (T2) will cause greater damage to the pigmented potatoes plants, making the plants reduce the yield”
Claim · model-written summary
Higher UV-B significantly reduced tuber nutrients.
- Taxon
- pigmented potatoese0
- Treatment
- higher dose of UV-B radiation (T2)e0
- Outcome
- tuber nutrientse0
- Direction
- reducee0
Not reportedComparator
Verbatim
e0“higher dose of UV-B radiation (T2) will cause greater damage to the pigmented potatoes plants, making the plants reduce the yield, and significantly reduce the tuber nutrients”
Claim · model-written summary
Proper UV-B improved oxidative stress tolerance.
- Taxon
- pigmented potatoese0
- Treatment
- proper ultraviolet radiatione0
- Outcome
- oxidative stress tolerancee0
- Direction
- improvee0
Not reportedComparator
Verbatim
e0“proper ultraviolet radiation will not harm pigmented potatoes, but also improve their oxidative stress tolerance”
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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.