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פותח על ידי קלירמאש פתרונות בע"מ -
Sucrose phosphate synthase, sucrose synthase, and invertase activities in developing fruit of Lycopersicon esculentum mill. and the sucrose accumulating Lycopersicon hirsutum Humb. and Bonpl.
Year:
1991
Authors :
מירון, דפנה
;
.
שפר, ארתור
;
.
Volume :
95
Co-Authors:
Miron, D., Department of Vegetable Crops, Agric. Res. Org.-The Volcani Center, Bet Dagan, 50250, Israel
Schaffer, A.A., Department of Vegetable Crops, Agric. Res. Org.-The Volcani Center, Bet Dagan, 50250, Israel
Facilitators :
From page:
623
To page:
627
(
Total pages:
5
)
Abstract:
The green-fruited Lycopersicon hirsutum Humb. and Bonpl. accumulated sucrose to concentrations of about 118 micromoles per gram fresh weight during the final stages of development. In comparison, Lycopersicon esculentum Mill. cultivars contained less than 15 micromoles per gram fresh weight of sucrose at the ripe stage. Glucose and fructose levels remained relatively constant throughout development in L. hirsutum at 22 to 50 micromoles per gram fresh weight each. Starch content was low even at early stages of development, and declined further with development. Soluble acid invertase (EC 3.2.1.26) activity declined concomitant with the rise in sucrose content. Acid invertase activity, which was solubilized in 1 molar NaCI (presumably cell-wall bound), remained constant throughout development (about 3 micromoles of reducing sugars (per gram fresh weight) per hour. Sucrose phosphate synthase (EC 2.4.1.14) activity was present at about 5 micromoles of sucrose (per gram fresh weight) per hour even at early stages of development, and increased sharply to about 40 micromoles of sucrose (per gram fresh weight) per hour at the final stages of development studied, parallel to the rise in sucrose content. In comparison, sucrose phosphate synthase activity in L. esculentum remained low throughout development. The possible roles of the sucrose metabolizing enzymes in determining sucrose accumulation are discussed.
Note:
Related Files :
enzymes
Invertase
Lycopersicon esculentum
Lycopersicon hirsutum
metabolism
phosphate
Solanum lycopersicum
sucrose
tomato
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
25670
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:16
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Scientific Publication
Sucrose phosphate synthase, sucrose synthase, and invertase activities in developing fruit of Lycopersicon esculentum mill. and the sucrose accumulating Lycopersicon hirsutum Humb. and Bonpl.
95
Miron, D., Department of Vegetable Crops, Agric. Res. Org.-The Volcani Center, Bet Dagan, 50250, Israel
Schaffer, A.A., Department of Vegetable Crops, Agric. Res. Org.-The Volcani Center, Bet Dagan, 50250, Israel
Sucrose phosphate synthase, sucrose synthase, and invertase activities in developing fruit of Lycopersicon esculentum mill. and the sucrose accumulating Lycopersicon hirsutum Humb. and Bonpl.
The green-fruited Lycopersicon hirsutum Humb. and Bonpl. accumulated sucrose to concentrations of about 118 micromoles per gram fresh weight during the final stages of development. In comparison, Lycopersicon esculentum Mill. cultivars contained less than 15 micromoles per gram fresh weight of sucrose at the ripe stage. Glucose and fructose levels remained relatively constant throughout development in L. hirsutum at 22 to 50 micromoles per gram fresh weight each. Starch content was low even at early stages of development, and declined further with development. Soluble acid invertase (EC 3.2.1.26) activity declined concomitant with the rise in sucrose content. Acid invertase activity, which was solubilized in 1 molar NaCI (presumably cell-wall bound), remained constant throughout development (about 3 micromoles of reducing sugars (per gram fresh weight) per hour. Sucrose phosphate synthase (EC 2.4.1.14) activity was present at about 5 micromoles of sucrose (per gram fresh weight) per hour even at early stages of development, and increased sharply to about 40 micromoles of sucrose (per gram fresh weight) per hour at the final stages of development studied, parallel to the rise in sucrose content. In comparison, sucrose phosphate synthase activity in L. esculentum remained low throughout development. The possible roles of the sucrose metabolizing enzymes in determining sucrose accumulation are discussed.
Scientific Publication
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