Abstract
【Objective】The study was to find out the regulation metabolism of plant growth regulators on photosynthesis of nectarine under enhanced UV-B radiation.【Method】The effects of 6-BA and GA3 on photosynthesis and antioxidase activity of nectarine were investigated.【Result】The results showed that Pn value decreased and chlorophyll a content increased in TL treatment(supplemental UV-B 15 μW·cm-2).However,both Pn value and chlorophyll a content decreased significantly in TH treatment(supplemental UV-B 30 μW·cm-2).Under enhanced UV-B radiation,foliar spray of 50 mg·L-1 GA3 and 6-BA improved Pn,the content of chlorophyll a and b,compared with TH.6-BA increased SOD and POD activity in leaves under enhanced UV-B,but reduced MDA content.Flavoniod content increased in TH +6-BA treatment,but it was not significantly different from that of CK.Flavoniod content of TH +GA3 treatment increased significantly.However,MDA content and antioxidase activity had no significant change.【Conclusion 】It is suggested that the increase of net photosynthetic rate in TH +6-BA treatment under enhanced UV-B radiation may attribute to the enhance of SOD and POD activity.
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Claims 11
Claim · model-written summary
Low supplemental UV-B decreased Pn in nectarine.
- Taxon
- nectarine
Prunus persica var. nucipersicat0 - Treatment
- TL treatment(supplemental UV-B 15 μW·cm-2)e0
- Outcome
- Pn valuee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pn value decreased and chlorophyll a content increased in TL treatment(supplemental UV-B 15 μW·cm-2)”
t0“nectarine”
Claim · model-written summary
Low supplemental UV-B increased chlorophyll a in nectarine.
- Taxon
- nectarinePrunus persica var. nucipersicat0
- Treatment
- TL treatment(supplemental UV-B 15 μW·cm-2)e0
- Outcome
- chlorophyll a contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pn value decreased and chlorophyll a content increased in TL treatment(supplemental UV-B 15 μW·cm-2)”
t0“nectarine”
Claim · model-written summary
High supplemental UV-B significantly decreased Pn and chlorophyll a in nectarine.
- Taxon
- nectarinePrunus persica var. nucipersicat0
- Treatment
- TH treatment(supplemental UV-B 30 μW·cm-2)e0
- Outcome
- Pn value and chlorophyll a contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both Pn value and chlorophyll a content decreased significantly in TH treatment(supplemental UV-B 30 μW·cm-2)”
t0“nectarine”
Claim · model-written summary
Foliar GA3 improved Pn and chlorophyll a and b under enhanced UV-B relative to TH.
- Taxon
- nectarinePrunus persica var. nucipersicat0
- Treatment
- 50 mg·L-1 GA3e0
- Outcome
- Pn,the content of chlorophyll a and be0
- Direction
- improvede0
- Comparator
- THe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar spray of 50 mg·L-1 GA3 and 6-BA improved Pn,the content of chlorophyll a and b,compared with TH”
t0“nectarine”
Claim · model-written summary
Foliar 6-BA improved Pn and chlorophyll a and b under enhanced UV-B relative to TH.
- Taxon
- nectarinePrunus persica var. nucipersicat0
- Treatment
- 6-BAe0
- Outcome
- Pn,the content of chlorophyll a and be0
- Direction
- improvede0
- Comparator
- THe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar spray of 50 mg·L-1 GA3 and 6-BA improved Pn,the content of chlorophyll a and b,compared with TH”
t0“nectarine”
Claim · model-written summary
6-BA increased leaf SOD and POD activities under enhanced UV-B.
- Taxon
- nectarinePrunus persica var. nucipersicat0
- Organ / stage
- leavese0
- Treatment
- 6-BAe0
- Outcome
- SOD and POD activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“6-BA increased SOD and POD activity in leaves under enhanced UV-B,but reduced MDA content”
t0“nectarine”
Claim · model-written summary
6-BA reduced MDA content under enhanced UV-B.
- Taxon
- nectarinePrunus persica var. nucipersicat0
- Treatment
- 6-BAe0
- Outcome
- MDA contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“6-BA increased SOD and POD activity in leaves under enhanced UV-B,but reduced MDA content”
t0“nectarine”
Claim · model-written summary
TH plus 6-BA increased flavonoid content, without a significant difference from CK.
- Taxon
- nectarinePrunus persica var. nucipersicat0
- Treatment
- TH +6-BA treatmente0
- Outcome
- Flavoniod contente0
- Direction
- increasede0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flavoniod content increased in TH +6-BA treatment,but it was not significantly different from that of CK”
t0“nectarine”
Claim · model-written summary
TH plus GA3 significantly increased flavonoid content.
- Taxon
- nectarinePrunus persica var. nucipersicat0
- Treatment
- TH +GA3 treatmente0
- Outcome
- Flavoniod contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flavoniod content of TH +GA3 treatment increased significantly”
t0“nectarine”
Claim · model-written summary
MDA content and antioxidase activity showed no significant change with TH plus GA3.
- Taxon
- nectarinePrunus persica var. nucipersicat0
- Outcome
- MDA content and antioxidase activitye0
- Direction
- no significant changee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However,MDA content and antioxidase activity had no significant change”
t0“nectarine”
Claim · model-written summary
The authors suggest that higher photosynthesis with TH plus 6-BA may be attributable to enhanced SOD and POD activity.
- Taxon
- nectarinePrunus persica var. nucipersicat0
- Treatment
- TH +6-BA treatmente0
- Outcome
- net photosynthetic ratee0
- Qualifier
- enhance of SOD and POD activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase of net photosynthetic rate in TH +6-BA treatment under enhanced UV-B radiation may attribute to the enhance of SOD and POD activity”
t0“nectarine”
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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.