Abstract
We used eight months of oil palm seedlings as materials to study the effect of different time of low temperature stress on physiological and biochemical changes of oil palm seedling, and according to the temperature variation in Hainan,set up four different minimum temperature treatments including CK( natural temperature treatment),18℃( T1 treatment),12℃( T2 treatment) and 6℃( T3 treatment) after 0,7,14,21 d sampling,respectively. With the decreasing of temperature and the increasing of time,the oil palm seedling leaf water content and SOD activity continued to decrease,the soluble protein,sugar content,H2O2 and MDA content continued to increase,and POD,CAT,APX activity first increased and then decreased. Under T2,T3 the seedling leaf became brown and oil palm seedling growth slowed down significantly after two-week treatment.Low temperature caused obviously oxidative damage,but oil palm seedlings used adaptation mechanisms by increasing the contents of soluble protein,sugar and antioxidant enzyme activity to resist oxidative damage caused by low temperature for normal growth.
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Claims 7
Claim · model-written summary
Leaf water content and SOD activity decreased as temperature fell and exposure time increased.
- Taxon
- oil palme0
- Organ / stage
- seedling leafe0
- Treatment
- decreasing of temperature and the increasing of timee0
- Outcome
- leaf water content and SOD activitye0
- Direction
- decreasee0
Not reportedComparator
Verbatim
e0“With the decreasing of temperature and the increasing of time,the oil palm seedling leaf water content and SOD activity continued to decrease”
Claim · model-written summary
Soluble protein, sugar, H2O2 and MDA contents increased as temperature fell and time increased.
- Taxon
- oil palmt0
- Treatment
- Low Temperature Stresst0
- Outcome
- soluble protein,sugar content,H2O2 and MDA contente0
- Direction
- increasee0
Not reportedComparator
Verbatim
e0“the soluble protein,sugar content,H2O2 and MDA content continued to increase”
t0“Effect of Low Temperature Stress on Physiological Changes in Oil Palm”
Claim · model-written summary
POD, CAT and APX activities first increased and then decreased under falling temperature and longer exposure.
- Taxon
- oil palmt0
- Treatment
- Low Temperature Stresst0
- Outcome
- POD,CAT,APX activitye0
- Direction
- first increased and then decreasede0
Not reportedComparator
Verbatim
e0“POD,CAT,APX activity first increased and then decreased”
t0“Effect of Low Temperature Stress on Physiological Changes in Oil Palm”
Claim · model-written summary
Seedling leaves browned under T2 and T3 after two weeks.
Not reportedComparatorDirection
Verbatim
e0“Under T2,T3 the seedling leaf became brown”
t0“oil palm”
Claim · model-written summary
Seedling growth slowed significantly under T2 and T3 after two weeks.
Not reportedComparator
Verbatim
e0“oil palm seedling growth slowed down significantly after two-week treatment”
Claim · model-written summary
The authors attributed oxidative damage to low temperature.
Not reportedDirection
Verbatim
e0“Low temperature caused obviously oxidative damage”
t0“oil palm”
Claim · model-written summary
The authors interpreted increased soluble protein, sugar and antioxidant enzyme activity as adaptation against oxidative damage.
Verbatim
e0“oil palm seedlings used adaptation mechanisms by increasing the contents of soluble protein,sugar and antioxidant enzyme activity to resist oxidative damage caused by low temperature for normal growth”