期刊论文详细信息
Genes 卷:12
A Complex Gene Network Mediated by Ethylene Signal Transduction TFs Defines the Flower Induction and Differentiation in Olea europaea L.
Guglielmo Puccio1  Antonio Mauceri2  Francesco Sunseri2  Francesco Mercati3  Amelia Salimonti4  Fabrizio Carbone4  Ivano Forgione4  TizianaMaria Sirangelo4 
[1] Department of Agricultural, Food and Forest Sciences, University of Palermo, 90133 Palermo, Italy;
[2] Department of Agriculture, University Mediterranea of Reggio Calabria, 89124 Reggio Calabria, Italy;
[3] Institute of Biosciences and BioResources (IBBR), National Research Council of Italy (CNR), 90129 Palermo, Italy;
[4] Research Centre for Olive, Citrus and Tree Fruit, Council for Agricultural Research and Economics (CREA), 87036 Rende, Italy;
关键词: Olea europaea;    flowering;    alternate bearing;    NGS;    lateral bud;    transcriptome profiling;   
DOI  :  10.3390/genes12040545
来源: DOAJ
【 摘 要 】

The olive tree (Olea europaea L.) is a typical Mediterranean crop, important for olive and oil production. The high tendency to bear fruits in an uneven manner, defined as irregular or alternate bearing, results in a significant economic impact for the high losses in olives and oil production. Buds from heavy loaded (‘ON’) and unloaded (‘OFF’) branches of a unique olive tree were collected in July and the next March to compare the transcriptomic profiles and get deep insight into the molecular mechanisms regulating floral induction and differentiation. A wide set of DEGs related to ethylene TFs and to hormonal, sugar, and phenylpropanoid pathways was identified in buds collected from ‘OFF’ branches. These genes could directly and indirectly modulate different pathways, suggesting their key role during the lateral bud transition to flowering stage. Interestingly, several genes related to the flowering process appeared as over-expressed in buds from March ‘OFF’ branches and they could address the buds towards flower differentiation. By this approach, interesting candidate genes related to the switch from vegetative to reproductive stages were detected and analyzed. The functional analysis of these genes will provide tools for developing breeding programs to obtain olive trees characterized by more constant productivity over the years.

【 授权许可】

Unknown   

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