Shuaijie Li¹ , Wenna Zhang² , Zhigang Zhang³ , Yaqin Zheng¹ , Zhenning Liu¹ , Meng Xu¹

1 College of Agriculture and Forestry Sciences, Linyi University, Linyi, 276000, China
2 Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi, 276000, China
3 Zoucheng Natural Resources and Planning Bureau, Ji’ning, 273500, China
Author    Correspondence author
Genomics and Applied Biology, 2023, Vol. 14, No. 2   doi: 10.5376/gab.2023.14.0002
Received: 07 Mar., 2023    Accepted: 14 Mar., 2023    Published: 03 Apr., 2023

This article was first published in Molecular Plant Breeding in Chinese, and here was authorized to translate and publish the paper in English under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Li S.J., Zhang W.N., Zhang Z.G., Zheng Y.Q., Liu Z.N., and Xu M., 2023, Identification of COR413 gene family in peach and its expression in low temperature and LTC treatment at postharvest, Genomics and Applied Biology, 14(2): 1-9 (doi: 10.5376/gab.2023.14.0002)

Peach were susceptible to chilling injury during low temperature (0^oC) storage at postharvest, and LTC (Low temperature conditioning) treatment could reduce chilling injury such as of H₂O₂ production and fruit browning. In order to study the function of peach COR413 in the regulation of postharvest chilling injury in peach ‘Beijing No. 9’, four COR413 gene family members were identified based on the peach genome database, namely PpCOR1~PpCOR4. Phylogenetic analysis showed that the four PpCORs could be clustered into two subfamilies. PpCOR1~PpCOR3 belonged to the first subfamily, and most of the members in this subfamily were located in plasma membrane. PpCOR4 belongs to the second subfamily, and its members are mainly located in thylakoid membrane. The cis-acting elements analysis of PpCORs promoter showed that PpCOR3 contained abundant abiotic stress responsive and hormone responsive elements such as jasmonate and abscisic acid. The results of gene expression showed that PpCOR3 was induced by low temperature while LTC treatment could repress the induction of PpCOR3 by low temperature. Interestingly, the expression of PpCOR3 was positively correlated with the change of H₂O₂ content in peach, which indicated that PpCOR3 was involved in the regulation of postharvest chilling injury in peach fruit. This result provides a theoretical basis for the study of postharvest storage and quality maintenance of peach fruit as well as the breeding of cold resistant peach varieties.

Peach; Low-temperature; COR413; Expression analysis