Abstract
The effects of putrescine,cadaverine,spermidine and spermidine on the growth,photosynthetic rates,PSⅡ photochemical efficiency(F_v/F_m),chloroplast-bound polyamine contents and MDA content and anti-oxidative enzyme activities of corn seedlings under 100 mmol/L NaCl stress were studied.The results showed that topdressings of putrescine,cadaverine,spermidine and spermidine could significantly increase the dry matters,chloroplast-bound polyamine contents,net photosynthetic rate and PSⅡ photochemical efficiency of corn seedlings but reduce the MDA content of the seedlings.Exogenous polyamines could significantly increase the APX,POD,CAT activities in corn seedlings suffering salt stress;exogenous putrescine can enhance the APX and POD activities,but exerted insignificant influence on the CAT activity.These make it clear that the alleviation of salt damage by polyamines is probably because increased chloroplast-bounded polyamine contents and anti-oxidative enzyme activities help enhance the photosynthetic capacities of corn suffering salt stress.
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Claims 6
Claim · model-written summary
Polyamine topdressings increased seedling dry matter, chloroplast polyamines, photosynthesis and PSII efficiency.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- topdressings of putrescine,cadaverine,spermidine and spermidinee0
- Outcome
- dry matters,chloroplast-bound polyamine contents,net photosynthetic rate and PSⅡ photochemical efficiencye0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“topdressings of putrescine,cadaverine,spermidine and spermidine could significantly increase the dry matters,chloroplast-bound polyamine contents,net photosynthetic rate and PSⅡ photochemical efficiency of corn seedlings”
Claim · model-written summary
Polyamine topdressings reduced seedling MDA content.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- topdressings of putrescine,cadaverine,spermidine and spermidinee0
- Outcome
- MDA contente0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“topdressings of putrescine,cadaverine,spermidine and spermidine could significantly increase the dry matters,chloroplast-bound polyamine contents,net photosynthetic rate and PSⅡ photochemical efficiency of corn seedlings but reduce the MDA content of the seedlings”
Claim · model-written summary
Exogenous polyamines increased APX, POD and CAT activities under salt stress.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Exogenous polyaminese0
- Outcome
- APX,POD,CAT activitiese0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous polyamines could significantly increase the APX,POD,CAT activities in corn seedlings suffering salt stress”
Claim · model-written summary
Putrescine enhanced APX and POD activities.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- exogenous putrescinee0
- Outcome
- APX and POD activitiese0
- Direction
- enhancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous putrescine can enhance the APX and POD activities”
t0“corn”
Claim · model-written summary
Putrescine had an insignificant effect on CAT activity.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- exogenous putrescinee0
- Outcome
- CAT activitye0
- Direction
- insignificant influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous putrescine can enhance the APX and POD activities,but exerted insignificant influence on the CAT activity”
t0“corn”
Claim · model-written summary
Authors proposed increased chloroplast polyamines and antioxidant activity as an explanation for alleviated salt damage.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- polyaminese0
- Outcome
- alleviation of salt damagee0
- Qualifier
- increased chloroplast-bounded polyamine contents and anti-oxidative enzyme activitiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the alleviation of salt damage by polyamines is probably because increased chloroplast-bounded polyamine contents and anti-oxidative enzyme activities help enhance the photosynthetic capacities of corn suffering salt stress”
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See all 17 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.