Abstract
A pot experiment with two maize varieties DH662 and XD20 was conducted to study the regulatory effects of exogenous spermidine on photosynthesis and physiological characteristics and yield of maize after waterlogging stress.The results showed that the average yield of DH662 and XD20 was increased by 12.9% and 10.8% after topdressing exogenous spermidine.The effect of waterlogging in different growth stages on maize was different.The treatment at seedling to jointing stage showed more influence on the two varieties.And the effects of exogenous spermidine was best at seedling to jointing stage.The topdressing of exogenous spermidine could improve the utilization efficiency of light energy in different growth stages,and Pn,Gs,Ls,Fv/Fm,ΦPSII,qP of leaves,but reduce Ci and qN.The activities of SOD and CAT in DH662 were increased significantly by 14.5% and 19.9%,while those in XD20 were increased significantly by 4.6% and 18.2% as compared with the waterlogging treatment.And the average activity of IDH and SDH in both the two cultivars was increased by 26.1% and 19.6%,while the activity of APX was not increased significantly.The exogenous spermidine could repress the cell membrane oxidation.The average root activity in DH662 and XD20 was increased by 12.9% and MDA content was decreased by 23.9%.Therefore,the topdressing of exogenous spermidine improves the physiological functions of leaves and roots,resulting in lower yield losses caused by waterlogging,but the sensitivity of different varities and different growth stages to Spd was different.
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Claims 20
Claim · model-written summary
Topdressing exogenous spermidine increased the average yield of maize DH662 by 12.9% after waterlogging stress.
- Material
- DH662e0
- Treatment
- Exogenous Spermidinet0
- Outcome
- average yielde0
- Direction
- increasede0
- Value
- 12.9%e0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the average yield of DH662 and XD20 was increased by 12.9% and 10.8% after topdressing exogenous spermidine”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
Topdressing exogenous spermidine increased the average yield of maize XD20 by 10.8% after waterlogging stress.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the average yield of DH662 and XD20 was increased by 12.9% and 10.8% after topdressing exogenous spermidine”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
Waterlogging at the seedling to jointing stage had more influence on the two maize varieties than at other stages.
- Organ / stage
- seedling to jointing stagee0
- Treatment
- Exogenous Spermidinet0
- Outcome
- influencee0
- Direction
- more influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatment at seedling to jointing stage showed more influence on the two varieties”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
The effects of exogenous spermidine were best when applied at the seedling to jointing stage.
- Organ / stage
- seedling to jointing stagee0
- Treatment
- Exogenous Spermidinet0
- Outcome
- effects of exogenous spermidinee0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effects of exogenous spermidine was best at seedling to jointing stage”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
Topdressing exogenous spermidine improved the utilization efficiency of light energy in different growth stages.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The topdressing of exogenous spermidine could improve the utilization efficiency of light energy in different growth stages”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
Exogenous spermidine increased leaf Pn, Gs and Ls.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pn,Gs,Ls,Fv/Fm,ΦPSII,qP of leaves”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
Exogenous spermidine increased leaf Fv/Fm, ΦPSII and qP.
- Organ / stage
- leavese0
- Treatment
- Exogenous Spermidinet0
- Outcome
- Fv/Fm,ΦPSII,qPe0
- Direction
- increaseinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pn,Gs,Ls,Fv/Fm,ΦPSII,qP of leaves”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
Exogenous spermidine reduced Ci and qN.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduce Ci and qN”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
Exogenous spermidine significantly increased SOD activity in DH662 by 14.5% compared with the waterlogging treatment.
- Material
- DH662e0
- Treatment
- Exogenous Spermidinet0
- Gene
- SODe0
- Outcome
- activities of SODe0
- Direction
- increasede0
- Value
- 14.5%e0
- Comparator
- waterlogging treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activities of SOD and CAT in DH662 were increased significantly by 14.5% and 19.9%,while those in XD20 were increased significantly by 4.6% and 18.2% as compared with the waterlogging treatment”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
Exogenous spermidine significantly increased CAT activity in DH662 by 19.9% compared with the waterlogging treatment.
- Material
- DH662e0
- Treatment
- Exogenous Spermidinet0
- Gene
- CATe0
- Outcome
- CATe0
- Direction
- increasede0
- Value
- 19.9%e0
- Comparator
- waterlogging treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activities of SOD and CAT in DH662 were increased significantly by 14.5% and 19.9%,while those in XD20 were increased significantly by 4.6% and 18.2% as compared with the waterlogging treatment”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
Exogenous spermidine significantly increased SOD activity in XD20 by 4.6% compared with the waterlogging treatment.
- Material
- XD20e0
- Treatment
- Exogenous Spermidinet0
- Gene
- SODe0
- Outcome
- activities of SODe0
- Direction
- increasede0
- Value
- 4.6%e0
- Comparator
- waterlogging treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activities of SOD and CAT in DH662 were increased significantly by 14.5% and 19.9%,while those in XD20 were increased significantly by 4.6% and 18.2% as compared with the waterlogging treatment”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
Exogenous spermidine significantly increased CAT activity in XD20 by 18.2% compared with the waterlogging treatment.
- Material
- XD20e0
- Treatment
- Exogenous Spermidinet0
- Gene
- CATe0
- Outcome
- CATe0
- Direction
- increasede0
- Value
- 18.2%e0
- Comparator
- waterlogging treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activities of SOD and CAT in DH662 were increased significantly by 14.5% and 19.9%,while those in XD20 were increased significantly by 4.6% and 18.2% as compared with the waterlogging treatment”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
Exogenous spermidine increased the average activity of IDH in both maize cultivars by 26.1%.
- Treatment
- Exogenous Spermidinet0
- Gene
- IDHe0
- Outcome
- average activity of IDHe0
- Direction
- increasede0
- Value
- 26.1%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the average activity of IDH and SDH in both the two cultivars was increased by 26.1% and 19.6%”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
Exogenous spermidine increased the average activity of SDH in both maize cultivars by 19.6%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the average activity of IDH and SDH in both the two cultivars was increased by 26.1% and 19.6%”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
APX activity was not significantly increased by exogenous spermidine.
- Treatment
- Exogenous Spermidinet0
- Gene
- APXe0
- Outcome
- activity of APXe0
- Direction
- not increased significantlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activity of APX was not increased significantly”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
Exogenous spermidine repressed cell membrane oxidation in maize.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The exogenous spermidine could repress the cell membrane oxidation”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
Exogenous spermidine increased the average root activity in DH662 and XD20 by 12.9%.
- Material
- DH662 and XD20e0
- Treatment
- Exogenous Spermidinet0
- Outcome
- average root activitye0
- Direction
- increasede0
- Value
- 12.9%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average root activity in DH662 and XD20 was increased by 12.9% and MDA content was decreased by 23.9%”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
Exogenous spermidine decreased MDA content by 23.9%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average root activity in DH662 and XD20 was increased by 12.9% and MDA content was decreased by 23.9%”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
Topdressing exogenous spermidine improves leaf and root physiological functions, resulting in lower yield losses caused by waterlogging.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the topdressing of exogenous spermidine improves the physiological functions of leaves and roots,resulting in lower yield losses caused by waterlogging”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
Claim · model-written summary
The sensitivity of different maize varieties and growth stages to spermidine was different.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the sensitivity of different varities and different growth stages to Spd was different”
t0“Exogenous Spermidine on Physiological Regulatory of Maize”
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