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פותח על ידי קלירמאש פתרונות בע"מ -
Carbohydrate balance and accumulation during development of near-isogenic tomato lines differing in the AGPase-L1 allele
Year:
2009
Authors :
יסלזון, ילנה
;
.
לוין, אילן
;
.
פטרייקוב, מרינה
;
.
שן, שמואל
;
.
שפר, ארתור
;
.
Volume :
134
Co-Authors:
Petreikov, M., Department of Vegetable Crops and Genetics, Agricultural Research Organization, Volcani Center, Bet Dagan, 50250, Israel
Yeselson, L., Department of Vegetable Crops and Genetics, Agricultural Research Organization, Volcani Center, Bet Dagan, 50250, Israel
Shen, S., Department of Vegetable Crops and Genetics, Agricultural Research Organization, Volcani Center, Bet Dagan, 50250, Israel
Levin, I., Department of Vegetable Crops and Genetics, Agricultural Research Organization, Volcani Center, Bet Dagan, 50250, Israel
Schaffer, A.A., Department of Vegetable Crops and Genetics, Agricultural Research Organization, Volcani Center, Bet Dagan, 50250, Israel
Efrati, A., Gedera Seed Co., Gedera, Israel
Bar, M., Gedera Seed Co., Gedera, Israel
Facilitators :
From page:
134
To page:
140
(
Total pages:
7
)
Abstract:
Soluble sugar accumulation is a major determinant of tomato (Solanum lycopersicum) fruit quality. One strategy of increasing sugar levels in the mature fruit is via the increase of the transient starch pool in the immature fruit, which is subsequently degraded to contribute to its soluble sugar levels. ADP-glucose pyrophosphorylase [AGPase (E.C. 2.7.7.27)] is a limiting enzyme in starch synthesis and we therefore developed introgression lines of cultivated tomato harboring the wild species (Solanum habrochaites) allele for the regulatory large subunit (L1H) of this heterotetrameric enzyme. Comparison of numerous near-isogenic lines of tomato segregating for the L1 allele, during multiple seasons, showed that the wild species allele led to an increase in fruit total soluble solids concentration (TSS) without a concomitant decrease in fruit size. Rather, in practically all lines studied, fruit size increased together with TSS, leading to an even larger increase in TSS x yield. A comparative developmental study of fruit carbohydrates, starch, and sugars between genotypes showed that the wild species allele led to increases in fruit size, carbohydrate concentration, and carbohydrate content of the whole fruit unit. This was related to a large increase in the transient starch reservoir that, upon degradation, accounted for the subsequent increase in soluble sugars. These results are evidence that modifying fruit sink carbohydrate metabolism via a single rate-limiting enzymatic step can increase the net import of photoassimilate into the fruit.
Note:
Related Files :
Lycopersicon hirsutum
S. lycopersicum
Solanum
Starch
sugar
TSS
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
30432
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:54
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Scientific Publication
Carbohydrate balance and accumulation during development of near-isogenic tomato lines differing in the AGPase-L1 allele
134
Petreikov, M., Department of Vegetable Crops and Genetics, Agricultural Research Organization, Volcani Center, Bet Dagan, 50250, Israel
Yeselson, L., Department of Vegetable Crops and Genetics, Agricultural Research Organization, Volcani Center, Bet Dagan, 50250, Israel
Shen, S., Department of Vegetable Crops and Genetics, Agricultural Research Organization, Volcani Center, Bet Dagan, 50250, Israel
Levin, I., Department of Vegetable Crops and Genetics, Agricultural Research Organization, Volcani Center, Bet Dagan, 50250, Israel
Schaffer, A.A., Department of Vegetable Crops and Genetics, Agricultural Research Organization, Volcani Center, Bet Dagan, 50250, Israel
Efrati, A., Gedera Seed Co., Gedera, Israel
Bar, M., Gedera Seed Co., Gedera, Israel
Carbohydrate balance and accumulation during development of near-isogenic tomato lines differing in the AGPase-L1 allele
Soluble sugar accumulation is a major determinant of tomato (Solanum lycopersicum) fruit quality. One strategy of increasing sugar levels in the mature fruit is via the increase of the transient starch pool in the immature fruit, which is subsequently degraded to contribute to its soluble sugar levels. ADP-glucose pyrophosphorylase [AGPase (E.C. 2.7.7.27)] is a limiting enzyme in starch synthesis and we therefore developed introgression lines of cultivated tomato harboring the wild species (Solanum habrochaites) allele for the regulatory large subunit (L1H) of this heterotetrameric enzyme. Comparison of numerous near-isogenic lines of tomato segregating for the L1 allele, during multiple seasons, showed that the wild species allele led to an increase in fruit total soluble solids concentration (TSS) without a concomitant decrease in fruit size. Rather, in practically all lines studied, fruit size increased together with TSS, leading to an even larger increase in TSS x yield. A comparative developmental study of fruit carbohydrates, starch, and sugars between genotypes showed that the wild species allele led to increases in fruit size, carbohydrate concentration, and carbohydrate content of the whole fruit unit. This was related to a large increase in the transient starch reservoir that, upon degradation, accounted for the subsequent increase in soluble sugars. These results are evidence that modifying fruit sink carbohydrate metabolism via a single rate-limiting enzymatic step can increase the net import of photoassimilate into the fruit.
Scientific Publication
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