Articles
Morphological and transcriptomic analysis in the different stages of persimmon (Diospyros kaki L.) fruit ripening
Article number
1412_51
Pages
345 – 350
Language
English
Abstract
Fruit ripening is a highly coordinated, genetically programmed, and irreversible process involving a series of physiological, biochemical, and organoleptic changes that lead to the development of a soft and edible ripe fruit with desirable quality attributes.
All biochemical and physiological changes during fruit ripening are driven by a cascade of molecular events, starting with the activation of signaling pathways.
These signals stimulate specific transcriptional regulators, which are responsible for coordinated expression of the fruit ripening-related genes that directly control the biochemical processes.
As in other climacteric fruits, ethylene is the major signaling molecule controlling most aspects of fruit ripening in persimmon.
In this study, the expression of genes involved in ethylene biosynthesis and response pathways, color change and fruit softening along natural persimmon ripening process was analyzed.
Fruit samples from different accessions were used to profile their expression from an early stage of fruit development to over-ripening.
A principal component analysis (PCA) was performed to correlate gene expression with agronomical traits.
Our results suggested a relationship between phenotypic characters and the expression of the studied genes and their differential expression according to the stage of development of the fruit.
This study provides valuable information to a better understanding of the ethylene signaling pathway and its regulation during on-tree fruit ripening in persimmon.
All biochemical and physiological changes during fruit ripening are driven by a cascade of molecular events, starting with the activation of signaling pathways.
These signals stimulate specific transcriptional regulators, which are responsible for coordinated expression of the fruit ripening-related genes that directly control the biochemical processes.
As in other climacteric fruits, ethylene is the major signaling molecule controlling most aspects of fruit ripening in persimmon.
In this study, the expression of genes involved in ethylene biosynthesis and response pathways, color change and fruit softening along natural persimmon ripening process was analyzed.
Fruit samples from different accessions were used to profile their expression from an early stage of fruit development to over-ripening.
A principal component analysis (PCA) was performed to correlate gene expression with agronomical traits.
Our results suggested a relationship between phenotypic characters and the expression of the studied genes and their differential expression according to the stage of development of the fruit.
This study provides valuable information to a better understanding of the ethylene signaling pathway and its regulation during on-tree fruit ripening in persimmon.
Authors
T. Dorta, F. Carrasco, F. Gil-Muñoz, E. Zuriaga, G. Rios, M. Blasco
Keywords
ethylene, transcriptional regulation, fruit ripening, softening
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