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          Institute: MPI für molekulare Pflanzenphysiologie     Collection: Publikationen Pflanzenphysiologie     Display Documents

ID: 230015.0, MPI für molekulare Pflanzenphysiologie / Publikationen Pflanzenphysiologie
Zooming in on a quantitative trait for tomato yield using interspecific introgressions
Authors:Fridman, E.; Carrari, F.; Liu, Y. S.; Fernie, A. R.; Zamir, D.
Date of Publication (YYYY-MM-DD):2004-09-17
Title of Journal:Science
Journal Abbrev.:Science Science
Issue / Number:5691
Start Page:1786
End Page:1789
Review Status:not specified
Audience:Not Specified
Abstract / Description:To explore natural biodiversity we developed and examined introgression lines (ILs) containing chromosome segments of wild species (Solanum pennellii) in the background of the cultivated tomato (S. lycopersicum). We identified Brix9-2-5, which is a S. pennellii quantitative trait locus (QTL) that increases sugar yield of tomatoes and was mapped within a flower- and fruit-specific invertase (LIN5). QTL analysis representing five different tomato species delimited the functional polymorphism of Brix-9-2-5 to an amino acid near the catalytic site of the invertase crystal, affecting enzyme kinetics and fruit sink strength. These results underline the power of diverse ILs for high-resolution perspectives on complex phenotypes.
Free Keywords:backcross qtl analysis
; genetic architecture
; l-pimpinellifolium
; plant development
; invertase gene
; sugar content
; arabidopsis
; cross
; identification
; solanaceae
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für molekulare Pflanzenphysiologie/Molekulare Physiologie/AG Willmitzer/Fernie
External Affiliations:Hebrew Univ Jerusalem, Fac Agr, Robert H Smith Inst Plant Sci & Genet Agr, POB 12, IL-76100 Rehovot, Israel
Hebrew Univ Jerusalem, Fac Agr, Robert H Smith Inst Plant Sci & Genet Agr, IL-76100 Rehovot, Israel
Max Planck Inst Mol Pflanzenphysiol, D-14476 Golm, Germany
Identifiers:ISI:000224039500045 [ID No:1]
ISI:000224039500045 [ID No:2]
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