Differential Expression of the CBF Gene Family During Postharvest Cold Storage and Subsequent Shelf-Life of Peach Fruit
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Differential Expression of the CBF Gene Family During Postharvest Cold Storage and Subsequent Shelf-Life of Peach Fruit Li Liang & Bo Zhang & Xue-Ren Yin & Chang-Jie Xu & Chong-De Sun & Kun-Song Chen
# Springer Science+Business Media New York 2013
Abstract Peach fruits are sensitive to chilling injury (CI) during postharvest cold storage and their subsequent shelf-life, which results in loss of quality and market value. Many studies have examined the development of CI, including analyses of changes in biochemical composition, enzyme activity and gene expression; however, the molecular mechanism of CI remains unresolved. Six C-repeat (CRT) / dehydrationresponsive element (DRE) binding factor (CBF) genes (PpCBF1-6) were isolated and characterized in peach fruit based on their homology to CBF genes that are available in public Prunus persica genome databases. The expression patterns of these genes were analyzed in response to varying temperatures and durations of treatment. Transcription of PpCBF1/5/6 was induced at low temperatures, whereas expression of other CBF genes remained relatively constant. The results presented here indicate that treating peach fruit with a CI-delaying temperature (0 °C) resulted in a greater accumulation of PpCBF1/5/6 transcripts than that observed in fruit treated with a CI-inducing temperature (5 °C). CBF gene induction was accompanied by a decrease in CI symptoms, including a loss of firmness, flesh browning and increased Electronic supplementary material The online version of this article (doi:10.1007/s11105-013-0600-5) contains supplementary material, which is available to authorized users. L. Liang : B. Zhang (*) : X.
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