Abstract
[Objective] The purpose was to discuss the relationship of conjugated polyamines and osmotic stress on mitochondria membrane.[Method] With the seedlings of different maize cultivars Nongda 108 with strong drought-tolerance and Yedan 13 with weak drought-tolerance as materials,the relationship of the hydrolytic activity of mitochondria ATPase in seedling roots and noncovalent conjugated spermidine(Spd) content on mitochondria membrane under the osmotic stress of polyethylene glycol(PEG)-6000 was studied.[Result] Under the osmotic stress,the ATPase activity decreased more in Yedan 13 than that in Nongda 108 obviously,while the content of non-covalent conjugated Spd increased more in Nongda 108 than that in Yedan 13 obviously.Under the osmotic stress,the exogenous Spd treatment improved the increment of noncovalent conjugated Spd content and inhibited the decrease in ATPase activity in Yedan 13,which enhanced the tolerance of Yedan 13 seedlings.The treatment with methylglyoxal-bis(guanine hydrazone)(MGBG),which was a specific inhibitor of Spd biosynthesis,remarkably inhibited the increment of noncovalent conjugated Spd and improved the decrease of ATPase activity in Nongda 108 under the osmotic stress,which decreased the tolerance of Nongda 108 seedlings.[Conclusion] The non-covalent conjugated Spd on mitochondria membrane might enhance the resistance of maize seedling to osmotic stress via maintaining stable ATPase activity.
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Claims 9
Claim · model-written summary
Under osmotic stress, ATPase activity declined more in Yedan 13 than Nongda 108.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the osmotic stress,the ATPase activity decreased more in Yedan 13 than that in Nongda 108 obviously”
t0“Maize”
Claim · model-written summary
Under osmotic stress, conjugated spermidine increased more in Nongda 108 than Yedan 13.
- Material
- Nongda 108e0
- Outcome
- content of non-covalent conjugated Spde0
- Direction
- increased moree0
- Comparator
- Yedan 13e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the content of non-covalent conjugated Spd increased more in Nongda 108 than that in Yedan 13 obviously.”
t0“Maize”
Claim · model-written summary
Exogenous spermidine increased conjugated spermidine in stressed Yedan 13.
- Material
- Yedan 13e0
- Treatment
- exogenous Spd treatmente0
- Outcome
- noncovalent conjugated Spd contente0
- Direction
- improved the incremente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the osmotic stress,the exogenous Spd treatment improved the increment of noncovalent conjugated Spd content and inhibited the decrease in ATPase activity in Yedan 13,which enhanced the tolerance of Yedan 13 seedlings.”
t0“Maize”
Claim · model-written summary
Exogenous spermidine restrained ATPase decline in stressed Yedan 13.
- Material
- Yedan 13e0
- Treatment
- exogenous Spd treatmente0
- Outcome
- ATPase activitye0
- Direction
- inhibited the decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the osmotic stress,the exogenous Spd treatment improved the increment of noncovalent conjugated Spd content and inhibited the decrease in ATPase activity in Yedan 13,which enhanced the tolerance of Yedan 13 seedlings.”
t0“Maize”
Claim · model-written summary
Exogenous spermidine enhanced tolerance of stressed Yedan 13.
- Material
- Yedan 13e0
- Treatment
- exogenous Spd treatmente0
- Outcome
- tolerance of Yedan 13 seedlingse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the osmotic stress,the exogenous Spd treatment improved the increment of noncovalent conjugated Spd content and inhibited the decrease in ATPase activity in Yedan 13,which enhanced the tolerance of Yedan 13 seedlings.”
t0“Maize”
Claim · model-written summary
MGBG inhibited the conjugated spermidine rise in stressed Nongda 108.
- Material
- Nongda 108e0
- Treatment
- methylglyoxal-bis(guanine hydrazone)(MGBG)e0
- Outcome
- noncovalent conjugated Spde0
- Direction
- inhibited the incremente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatment with methylglyoxal-bis(guanine hydrazone)(MGBG),which was a specific inhibitor of Spd biosynthesis,remarkably inhibited the increment of noncovalent conjugated Spd and improved the decrease of ATPase activity in Nongda 108 under the osmotic stress,which decreased the tolerance of Nongda 108 seedlings.”
t0“Maize”
Claim · model-written summary
MGBG increased ATPase decline in stressed Nongda 108.
- Material
- Nongda 108e0
- Treatment
- methylglyoxal-bis(guanine hydrazone)(MGBG)e0
- Outcome
- ATPase activitye0
- Direction
- improved the decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatment with methylglyoxal-bis(guanine hydrazone)(MGBG),which was a specific inhibitor of Spd biosynthesis,remarkably inhibited the increment of noncovalent conjugated Spd and improved the decrease of ATPase activity in Nongda 108 under the osmotic stress,which decreased the tolerance of Nongda 108 seedlings.”
t0“Maize”
Claim · model-written summary
MGBG reduced stressed Nongda 108 seedling tolerance.
- Material
- Nongda 108e0
- Treatment
- methylglyoxal-bis(guanine hydrazone)(MGBG)e0
- Outcome
- tolerance of Nongda 108 seedlingse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatment with methylglyoxal-bis(guanine hydrazone)(MGBG),which was a specific inhibitor of Spd biosynthesis,remarkably inhibited the increment of noncovalent conjugated Spd and improved the decrease of ATPase activity in Nongda 108 under the osmotic stress,which decreased the tolerance of Nongda 108 seedlings.”
t0“Maize”
Claim · model-written summary
The authors proposed that membrane-bound conjugated spermidine protects osmotic tolerance by maintaining ATPase activity.
- Compound
- Spde0
- Outcome
- resistance of maize seedling to osmotic stresse0
- Qualifier
- via maintaining stable ATPase activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The non-covalent conjugated Spd on mitochondria membrane might enhance the resistance of maize seedling to osmotic stress via maintaining stable ATPase activity.”
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See all 15 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.