Abstract
Phosphofructokinase (EC 2.7.1.11) activity in the apical meristem, leaf primordia, and leaf tissues (epidermis, mesophyll, xylem, phloem) of Dianthus chinensis L. was determined. These data show that activity on a dry weight per hour basis was about 1000 millimoles in the apical meristem and two youngest primordia, and declined to 150 millimoles in the mesophyll of the sixth leaf pair and to 80 millimoles in older leaves just expanded out of the bud. On a cell per hour basis, the activity increased from 75 femtomoles in cells of the apical meristem and leaf primordia to 1.5 picomoles in the mesophyll of the sixth leaf pair. However, on a cell volume (cubic micrometers) per hour basis, the opposite was true. The results indicate that (a) on a dry weight or unit cell volume basis the capacity for glycolysis declines during leaf development and that (b) within the apical meristem, incipient primordia are not associated with phosphofructokinase activity greater than adjacent areas of the meristem. In comparison to glucose-6-phosphate dehydrogenase activity previously measured in equivalent samples (Croxdale, Outlaw 1983 Planta 157: 289-297), the capacity of the glycolytic pathway is greater than the pentose phosphate pathway in the apical meristem
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Claims 8
Claim · model-written summary
Phosphofructokinase activity was about 1000 millimoles per dry weight per hour in the apical meristem and two youngest primordia.
- Taxon
- Dianthus chinensis
_in_Jorhat%2C_Assam.jpg?width=60)
Dianthus chinensise0 - Organ / stage
- apical meristem and two youngest primordiae1
- Outcome
- activitye1
- Value
- about 1000 millimolese1
- Qualifier
- on a dry weight per hour basise1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_in_Jorhat%2C_Assam.jpg?width=500)
Verbatim
e0“Phosphofructokinase (EC 2.7.1.11) activity in the apical meristem, leaf primordia, and leaf tissues (epidermis, mesophyll, xylem, phloem) of Dianthus chinensis L. was determined”
e1“These data show that activity on a dry weight per hour basis was about 1000 millimoles in the apical meristem and two youngest primordia, and declined to 150 millimoles in the mesophyll of the sixth leaf pair and to 80 millimoles in older leaves just expanded out of the bud”
Claim · model-written summary
Phosphofructokinase activity declined to 150 millimoles per dry weight per hour in the mesophyll of the sixth leaf pair.
- Taxon
- Dianthus chinensisDianthus chinensise0
- Organ / stage
- mesophyll of the sixth leaf paire1
- Outcome
- activitye1
- Direction
- declinede1
- Value
- 150 millimolese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphofructokinase (EC 2.7.1.11) activity in the apical meristem, leaf primordia, and leaf tissues (epidermis, mesophyll, xylem, phloem) of Dianthus chinensis L. was determined”
e1“These data show that activity on a dry weight per hour basis was about 1000 millimoles in the apical meristem and two youngest primordia, and declined to 150 millimoles in the mesophyll of the sixth leaf pair and to 80 millimoles in older leaves just expanded out of the bud”
Claim · model-written summary
Phosphofructokinase activity declined to 80 millimoles per dry weight per hour in older leaves just expanded out of the bud.
- Taxon
- Dianthus chinensisDianthus chinensise0
- Organ / stage
- older leaves just expanded out of the bude1
- Outcome
- activitye1
- Direction
- declinede1
- Value
- 80 millimolese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphofructokinase (EC 2.7.1.11) activity in the apical meristem, leaf primordia, and leaf tissues (epidermis, mesophyll, xylem, phloem) of Dianthus chinensis L. was determined”
e1“These data show that activity on a dry weight per hour basis was about 1000 millimoles in the apical meristem and two youngest primordia, and declined to 150 millimoles in the mesophyll of the sixth leaf pair and to 80 millimoles in older leaves just expanded out of the bud”
Claim · model-written summary
On a cell-per-hour basis, phosphofructokinase activity increased from 75 femtomoles in apical meristem and primordia cells to 1.5 picomoles in mesophyll cells of the sixth leaf pair.
- Taxon
- Dianthus chinensisDianthus chinensise0
- Organ / stage
- apical meristem and leaf primordiae2
- Outcome
- activitye2
- Direction
- increasede2
- Value
- 75 femtomolese2
- Qualifier
- to 1.5 picomoles in the mesophyll of the sixth leaf paire2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphofructokinase (EC 2.7.1.11) activity in the apical meristem, leaf primordia, and leaf tissues (epidermis, mesophyll, xylem, phloem) of Dianthus chinensis L. was determined”
e2“On a cell per hour basis, the activity increased from 75 femtomoles in cells of the apical meristem and leaf primordia to 1.5 picomoles in the mesophyll of the sixth leaf pair”
Claim · model-written summary
On a cell-volume-per-hour basis, phosphofructokinase activity decreased along leaf development.
- Taxon
- Dianthus chinensisDianthus chinensise0
- Organ / stage
- leaf developmente4
- Outcome
- activitye0
- Direction
- decreaseinferrede3
- Qualifier
- on a cell volume (cubic micrometers) per hour basise3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphofructokinase (EC 2.7.1.11) activity in the apical meristem, leaf primordia, and leaf tissues (epidermis, mesophyll, xylem, phloem) of Dianthus chinensis L. was determined”
e3“However, on a cell volume (cubic micrometers) per hour basis, the opposite was true”
e4“The results indicate that (a) on a dry weight or unit cell volume basis the capacity for glycolysis declines during leaf development”
Claim · model-written summary
The capacity for glycolysis declines during leaf development on a dry weight or unit cell volume basis.
- Taxon
- Dianthus chinensisDianthus chinensise0
- Organ / stage
- leaf developmente4
- Outcome
- capacity for glycolysise4
- Direction
- declinese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphofructokinase (EC 2.7.1.11) activity in the apical meristem, leaf primordia, and leaf tissues (epidermis, mesophyll, xylem, phloem) of Dianthus chinensis L. was determined”
e4“The results indicate that (a) on a dry weight or unit cell volume basis the capacity for glycolysis declines during leaf development”
Claim · model-written summary
Incipient primordia in the apical meristem do not show phosphofructokinase activity greater than adjacent meristem areas.
- Taxon
- Dianthus chinensisDianthus chinensise0
- Organ / stage
- incipient primordiae4
- Outcome
- phosphofructokinase activitye4
- Direction
- greatere4
- Comparator
- adjacent areas of the meristeme4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphofructokinase (EC 2.7.1.11) activity in the apical meristem, leaf primordia, and leaf tissues (epidermis, mesophyll, xylem, phloem) of Dianthus chinensis L. was determined”
e4“within the apical meristem, incipient primordia are not associated with phosphofructokinase activity greater than adjacent areas of the meristem”
Claim · model-written summary
The capacity of the glycolytic pathway is greater than that of the pentose phosphate pathway in the apical meristem.
- Taxon
- Dianthus chinensisDianthus chinensise0
- Organ / stage
- apical meristeme5
- Outcome
- capacity of the glycolytic pathwaye5
- Direction
- greatere5
- Comparator
- the pentose phosphate pathwaye5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphofructokinase (EC 2.7.1.11) activity in the apical meristem, leaf primordia, and leaf tissues (epidermis, mesophyll, xylem, phloem) of Dianthus chinensis L. was determined”
e5“the capacity of the glycolytic pathway is greater than the pentose phosphate pathway in the apical meristem”