Abstract
In order to study the effect of mercury on the activities of invertase(Inv) and phenylalanine ammonia-lyase(PAL)in leaves,roots and germinating embryos of wheat seedlings,different concentrations of Hg2+were used for seed soaking treatment and then the Inv and the PAL activities of wheat at different processing times and organs were determined.Results showed that with the concentration of Hg2+ increasing,the acidic and neutral/alkaline Inv activities all trended to rise first and then fall in the leaves,roots and germinating embryos.PAL activity also presented the same tendency.In different organs,the enzyme activities in the fast growth leaves and roots were higher than those in the germinating embryos.In conclusion,low concentration of Hg2+(≤0.100mmol/L) had short-term promoting action,while high concentration of Hg2+(≥0.200mmol/L) had significantly inhibition on the activities of Inv and PAL.The activities of Inv and PAL reached the maximum at Hg2+concentration of 0.100mmol/L,which was a threshold concentration affecting the growth of wheat seedlings.
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Claims 6
Claim · model-written summary
Acidic and neutral/alkaline invertase activities rose and then fell as Hg2+ concentration increased, in leaves, roots and germinating embryos.
- Taxon
- Wheat
Triticum aestivumt0 - Organ / stage
- leaves,roots and germinating embryose1
- Treatment
- concentration of Hg2+e1
- Outcome
- acidic and neutral/alkaline Inv activitiese1
- Direction
- rise first and then falle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“with the concentration of Hg2+ increasing,the acidic and neutral/alkaline Inv activities all trended to rise first and then fall in the leaves,roots and germinating embryos”
t0“The Effect of Mercury Stress on Invertase and Phenylalanine Ammonia-lyase Activities in Wheat Seedlings”
Claim · model-written summary
PAL activity followed the same rise-then-fall tendency as Hg2+ concentration increased.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- concentration of Hg2+e1
- Outcome
- PAL activitye2
- Direction
- the same tendencye2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“with the concentration of Hg2+ increasing,the acidic and neutral/alkaline Inv activities all trended to rise first and then fall in the leaves,roots and germinating embryos”
e2“PAL activity also presented the same tendency”
t0“The Effect of Mercury Stress on Invertase and Phenylalanine Ammonia-lyase Activities in Wheat Seedlings”
Claim · model-written summary
Enzyme activities in fast-growing leaves and roots were higher than in germinating embryos.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- fast growth leaves and rootse3
- Outcome
- enzyme activitiese3
- Direction
- highere3
- Comparator
- germinating embryose3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“In different organs,the enzyme activities in the fast growth leaves and roots were higher than those in the germinating embryos”
t0“The Effect of Mercury Stress on Invertase and Phenylalanine Ammonia-lyase Activities in Wheat Seedlings”
Claim · model-written summary
Low concentration of Hg2+ (≤0.100mmol/L) had a short-term promoting action on Inv and PAL activities.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- low concentration of Hg2+(≤0.100mmol/L)e4
- Outcome
- activities of Inv and PALe4
- Direction
- promoting actione4
- Qualifier
- short-terme4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“low concentration of Hg2+(≤0.100mmol/L) had short-term promoting action,while high concentration of Hg2+(≥0.200mmol/L) had significantly inhibition on the activities of Inv and PAL”
t0“The Effect of Mercury Stress on Invertase and Phenylalanine Ammonia-lyase Activities in Wheat Seedlings”
Claim · model-written summary
High concentration of Hg2+ (≥0.200mmol/L) significantly inhibited Inv and PAL activities.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- high concentration of Hg2+(≥0.200mmol/L)e4
- Outcome
- activities of Inv and PALe4
- Direction
- inhibitione4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“low concentration of Hg2+(≤0.100mmol/L) had short-term promoting action,while high concentration of Hg2+(≥0.200mmol/L) had significantly inhibition on the activities of Inv and PAL”
t0“The Effect of Mercury Stress on Invertase and Phenylalanine Ammonia-lyase Activities in Wheat Seedlings”
Claim · model-written summary
Inv and PAL activities reached their maximum at Hg2+ concentration of 0.100mmol/L.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Hg2+concentration of 0.100mmol/Le6
- Outcome
- activities of Inv and PALe6
- Direction
- reached the maximume6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The activities of Inv and PAL reached the maximum at Hg2+concentration of 0.100mmol/L”
t0“The Effect of Mercury Stress on Invertase and Phenylalanine Ammonia-lyase Activities in Wheat Seedlings”
The same questions in other papers
mercury(2+) · physiology: antioxidant enzymes · Triticum aestivum (wheat)Positive and negative results
1 in the opposite direction
- negative
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.