Document Detail

Auxin synthesis-encoding transgene enhances grape fecundity.
MedLine Citation:
PMID:  17337528     Owner:  NLM     Status:  MEDLINE    
Grape (Vitis vinifera) yield is largely dependent on the fecundity of the cultivar. The average number of inflorescences per shoot (i.e. shoot fruitfulness) is a trait related to fecundity of each grapevine. Berry number and weight per bunch are other features affecting grape yield. An ovule-specific auxin-synthesizing (DefH9-iaaM) transgene that increases the indole-3-acetic acid content of grape transgenic berries was transformed into cultivars Silcora and Thompson Seedless, which differ in the average number of inflorescences per shoots. Thompson Seedless naturally has very low shoot fruitfulness, whereas Silcora has medium shoot fruitfulness. The average number of inflorescences per shoot in DefH9-iaaM Thompson Seedless was doubled compared to its wild-type control. Berry number per bunch was increased in both transgenic cultivars. The quality and nutritional value of transgenic berries were substantially equivalent to their control fruits. The data presented indicate that auxin enhances fecundity in grapes, thus enabling to increase yield with lower production costs.
Elisa Costantini; Lucia Landi; Oriana Silvestroni; Tiziana Pandolfini; Angelo Spena; Bruno Mezzetti
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-03-02
Journal Detail:
Title:  Plant physiology     Volume:  143     ISSN:  0032-0889     ISO Abbreviation:  Plant Physiol.     Publication Date:  2007 Apr 
Date Detail:
Created Date:  2007-04-09     Completed Date:  2007-06-28     Revised Date:  2013-06-06    
Medline Journal Info:
Nlm Unique ID:  0401224     Medline TA:  Plant Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1689-94     Citation Subset:  IM    
Dipartimento Scienze Ambientali e delle Produzioni Vegetali, Marche Polytechnic University, 60131 Ancona, Italy.
Data Bank Information
Bank Name/Acc. No.:
GENBANK/AJ421474;  BE846422
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MeSH Terms
Genes, Plant*
Indoleacetic Acids / metabolism*
Molecular Sequence Data
Nutritive Value
Polymerase Chain Reaction
Vitis / metabolism,  physiology*
Reg. No./Substance:
0/Indoleacetic Acids

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