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Genome-wide survey and analysis of the TIFY gene family and its potential role in anthocyanin synthesis in Chinese sand pear (Pyrus pyrifolia)

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Abstract

The TIFY family is an important gene family which can be found only in plant and involved in different biologic processes. Jasmonic acid (JA) promotes anthocyanin accumulation in fruit. To explore the role of PpTIFY genes in anthocyanin biosynthesis of Chinese sand pear (Pyrus pyrifolia Nakai), we first cloned 21 PpTIFY genes from the pear genome and further identified 11 PpJAZ genes. The sequence similarity among the PpTIFY genes was relatively low, which indicated that PpTIFY genes in higher plants differentiated early during land plant evolution and have experienced considerable mutation. Transcripts of PpTIFY genes were detected in all organs and tissues of pear analyzed. The spatial and temporal expression patterns indicated that PpTIFY genes were associated with anthocyanin accumulation and JA signaling. The expression levels of PpTIFY genes were highest in leaves, whereas during fruit maturation, the expression level dramatically decreased. Furthermore, PpTIFY was induced after JA and light treatment in conjunction with anthocyanin accumulation in the peel of red fruit of Chinese sand pear. Genome-wide identification and characterization of pear PpTIFY genes will be helpful for further functional analysis of this gene family and cultivar improvement in pears.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 31471852) and the Earmarked Fund for China Agriculture Research System (CARS-28).

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Correspondence to Yuanwen Teng.

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The authors declare that they no conflict of interest.

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This article does not contain any studies with animals performed by any of the authors.

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Communicated by D. Chagné

Data archiving statement

The pear TIFY gene family sequences have been isolated from genome sequence of Pyrus bretschneideri (http://peargenome.njau.edu.cn/) and the accession numbers have been shown in Table 1.

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Ma, Y., Shu, S., Bai, S. et al. Genome-wide survey and analysis of the TIFY gene family and its potential role in anthocyanin synthesis in Chinese sand pear (Pyrus pyrifolia). Tree Genetics & Genomes 14, 25 (2018). https://doi.org/10.1007/s11295-018-1240-6

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  • DOI: https://doi.org/10.1007/s11295-018-1240-6

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