Abstract
We studied the growth state of tomato seedlings and the adaptive changes in activity of tonoplast H+-ATPase on different days (5 d,7 d,9 d,11 d,13 d) sampling from the roots of tomato seedlings under phosphorus starvation. The results indicated that the average height of the seedlings decreased under phosphorus starvation,while the main roots of the seedlings were significantly longer than those of the control (Figs.1,2). The phosphorus uptake rates of tomato seedlings un-der phosphorus starvation significantly increased and were much higher than those of controls (Fig. 3) and reached maximum values under the starva-tion for 7 days. The tonoplast H+-ATPase activity in the roots of tomato seedlings increased under phosphorus starvation and reached maximum val-ues under the starvation for 7 days,while the ac-tivity of the control changed little (Fig.4). Kinetic analysis of tonoplast H+-ATPase showed that phos-phorus starvation significantly lowered the Km value,but had no significant effect on the Vmax value of the enzyme (Fig.5). The results showed that phosphorus starvation increased the affinity of the enzyme to its substrate. In addition,phosphorus starvation did not alter the optimum pH (7.5) of the ATPase activity (Fig.6).
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Claims 10
Claim · model-written summary
Phosphorus starvation decreased the average height of tomato seedlings.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- phosphorus starvatione1
- Outcome
- average height of the seedlingse1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the growth state of tomato seedlings and the adaptive changes in activity of tonoplast H+-ATPase on different days (5 d,7 d,9 d,11 d,13 d) sampling from the roots of tomato seedlings under phosphorus starvation”
e1“the average height of the seedlings decreased under phosphorus starvation”
Claim · model-written summary
Phosphorus starvation significantly lengthened the main roots of tomato seedlings compared with control.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- phosphorus starvatione0
- Outcome
- main rootse2
- Direction
- significantly longere2
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the growth state of tomato seedlings and the adaptive changes in activity of tonoplast H+-ATPase on different days (5 d,7 d,9 d,11 d,13 d) sampling from the roots of tomato seedlings under phosphorus starvation”
e2“the main roots of the seedlings were significantly longer than those of the control”
Claim · model-written summary
Phosphorus uptake rates of tomato seedlings significantly increased under phosphorus starvation and were higher than in controls.
- Taxon
- tomato seedlingsSolanum lycopersicume3
- Treatment
- phosphorus starvatione3
- Outcome
- phosphorus uptake ratese3
- Direction
- significantly increasede3
- Comparator
- controlse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the growth state of tomato seedlings and the adaptive changes in activity of tonoplast H+-ATPase on different days (5 d,7 d,9 d,11 d,13 d) sampling from the roots of tomato seedlings under phosphorus starvation”
e3“The phosphorus uptake rates of tomato seedlings un-der phosphorus starvation significantly increased and were much higher than those of controls”
Claim · model-written summary
Phosphorus uptake rates reached their maximum under phosphorus starvation at 7 days.
- Taxon
- tomato seedlingsSolanum lycopersicume3
- Outcome
- phosphorus uptake ratese3
- Value
- 7 dayse4
- Qualifier
- reached maximum valuese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the growth state of tomato seedlings and the adaptive changes in activity of tonoplast H+-ATPase on different days (5 d,7 d,9 d,11 d,13 d) sampling from the roots of tomato seedlings under phosphorus starvation”
e3“The phosphorus uptake rates of tomato seedlings un-der phosphorus starvation significantly increased and were much higher than those of controls”
e4“reached maximum values under the starva-tion for 7 days”
Claim · model-written summary
Tonoplast H+-ATPase activity in tomato roots increased under phosphorus starvation compared with control.
- Taxon
- tomato seedlingsSolanum lycopersicume5
- Treatment
- phosphorus starvatione5
- Outcome
- tonoplast H+-ATPase activitye5
- Direction
- increasede5
- Comparator
- controle7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the growth state of tomato seedlings and the adaptive changes in activity of tonoplast H+-ATPase on different days (5 d,7 d,9 d,11 d,13 d) sampling from the roots of tomato seedlings under phosphorus starvation”
e5“The tonoplast H+-ATPase activity in the roots of tomato seedlings increased under phosphorus starvation”
e7“the ac-tivity of the control changed little”
Claim · model-written summary
Tonoplast H+-ATPase activity reached its maximum under phosphorus starvation at 7 days.
- Taxon
- tomato seedlingsSolanum lycopersicume5
- Outcome
- tonoplast H+-ATPase activitye5
- Value
- 7 dayse6
- Qualifier
- reached maximum val-uese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the growth state of tomato seedlings and the adaptive changes in activity of tonoplast H+-ATPase on different days (5 d,7 d,9 d,11 d,13 d) sampling from the roots of tomato seedlings under phosphorus starvation”
e5“The tonoplast H+-ATPase activity in the roots of tomato seedlings increased under phosphorus starvation”
e6“reached maximum val-ues under the starvation for 7 days”
Claim · model-written summary
Phosphorus starvation significantly lowered the Km of tonoplast H+-ATPase.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- phos-phorus starvatione1
- Gene
- tonoplast H+-ATPasee0
- Outcome
- Km valuee1
- Direction
- significantly lowerede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the growth state of tomato seedlings and the adaptive changes in activity of tonoplast H+-ATPase on different days (5 d,7 d,9 d,11 d,13 d) sampling from the roots of tomato seedlings under phosphorus starvation”
e1“phos-phorus starvation significantly lowered the Km value”
Claim · model-written summary
Phosphorus starvation had no significant effect on the Vmax of tonoplast H+-ATPase.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- phos-phorus starvatione1
- Gene
- tonoplast H+-ATPasee0
- Outcome
- Vmax valuee2
- Direction
- no significant effecte2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the growth state of tomato seedlings and the adaptive changes in activity of tonoplast H+-ATPase on different days (5 d,7 d,9 d,11 d,13 d) sampling from the roots of tomato seedlings under phosphorus starvation”
e1“phos-phorus starvation significantly lowered the Km value”
e2“but had no significant effect on the Vmax value of the enzyme”
Claim · model-written summary
Phosphorus starvation increased the affinity of the enzyme for its substrate.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- phosphorus starvatione1
- Outcome
- affinity of the enzyme to its substratee1
- Direction
- increasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the growth state of tomato seedlings and the adaptive changes in activity of tonoplast H+-ATPase on different days (5 d,7 d,9 d,11 d,13 d) sampling from the roots of tomato seedlings under phosphorus starvation”
e1“The results showed that phosphorus starvation increased the affinity of the enzyme to its substrate”
Claim · model-written summary
Phosphorus starvation did not alter the optimum pH of tomato root tonoplast H+-ATPase activity, which was 7.5.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- phosphorus starvatione1
- Outcome
- optimum pHe1
- Direction
- did not altere1
- Value
- 7.5e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the growth state of tomato seedlings and the adaptive changes in activity of tonoplast H+-ATPase on different days (5 d,7 d,9 d,11 d,13 d) sampling from the roots of tomato seedlings under phosphorus starvation”
e1“phosphorus starvation did not alter the optimum pH (7.5) of the ATPase activity”
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