Peach is a climacteric fruit, and ethylene plays a critical role during ripening. The dramatic increase in ethylene production that leads to drupe ripening and softening hardly affects the possibility of long storage periods. Several post-harvest diseases affect peach fruit that has undergone post-harvest treatments such as cold, thus limiting its fresh consumption during the production season and its distant shipping (mainly from the southern to the northern hemisphere). Moreover, the use of chemical compounds, mostly the ethylene receptor inhibitor 1-methylcyclopropene (1-MCP), widely used to control ripening in several climacteric fruit, is ineffective with peach. Extensive transcriptome profiling has evidenced the uniqueness of the activation of climacteric ethylene production in peach and other drupes, such as apricot. The tight synchronization between the activation of the auxin and ethylene pathways, the cross-talk between the two and the existence of genes uniquely modulated by one of the two hormones highlight new possible targets for genetic improvement and new possibilities to chemically regulate peach ripening. © 2013 Woodhead Publishing Limited. All rights reserved.
Peach ripening transcriptomics unveils new and unexpected targets for the improvement of drupe quality
BUSATTO, NICOLA;RAHIM, MD-ABDUR;TRAINOTTI, LIVIO
2013
Abstract
Peach is a climacteric fruit, and ethylene plays a critical role during ripening. The dramatic increase in ethylene production that leads to drupe ripening and softening hardly affects the possibility of long storage periods. Several post-harvest diseases affect peach fruit that has undergone post-harvest treatments such as cold, thus limiting its fresh consumption during the production season and its distant shipping (mainly from the southern to the northern hemisphere). Moreover, the use of chemical compounds, mostly the ethylene receptor inhibitor 1-methylcyclopropene (1-MCP), widely used to control ripening in several climacteric fruit, is ineffective with peach. Extensive transcriptome profiling has evidenced the uniqueness of the activation of climacteric ethylene production in peach and other drupes, such as apricot. The tight synchronization between the activation of the auxin and ethylene pathways, the cross-talk between the two and the existence of genes uniquely modulated by one of the two hormones highlight new possible targets for genetic improvement and new possibilities to chemically regulate peach ripening. © 2013 Woodhead Publishing Limited. All rights reserved.
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