XI Keyong
College of Horticulture and Gardening, Yangtze University/Xiangxin Crop Research Institute, Yangtze University, Jingzhou 434025, HubeiTIAN Ye
College of Horticulture and Gardening, Yangtze University/Xiangxin Crop Research Institute, Yangtze University, Jingzhou 434025, HubeiWANG Yanhong
College of Horticulture and Gardening, Yangtze University/Xiangxin Crop Research Institute, Yangtze University, Jingzhou 434025, HubeiLIU Yiqing
College of Horticulture and Gardening, Yangtze University/Xiangxin Crop Research Institute, Yangtze University, Jingzhou 434025, HubeiYIN Junliang
College of Agriculture, Yangtze University, Jingzhou 434025, HubeiLIANG Hongyan
Jingzhou Academy of Agricultural Sciences, Jingzhou 434025, HubeiZHU Xuedong
College of Horticulture and Gardening, Yangtze University/Xiangxin Crop Research Institute, Yangtze University, Jingzhou 434025, HubeiZHU Yongxing
College of Horticulture and Gardening, Yangtze University/Xiangxin Crop Research Institute, Yangtze University, Jingzhou 434025, Hubei1.College of Horticulture and Gardening, Yangtze University/Xiangxin Crop Research Institute, Yangtze University, Jingzhou 434025, Hubei;2.College of Agriculture, Yangtze University, Jingzhou 434025, Hubei;3.Jingzhou Academy of Agricultural Sciences, Jingzhou 434025, Hubei
Foundation projects: Key Research and Development Program of Hubei Province, China (2022BBA0061, 2021BBA096); The Scientific and Technological Projects of Jingzhou, Hubei Province, China (2022BB36); Chongqing Outstanding Scientist Program(CQYC20220101514)
Ginger is an important vegetable crop that can be used as medicine and food, but it is sensitive to various biotic and abiotic stresses during its cultivation, which is detrimental to the safe production. Isopentenyl-transferases (IPTs) are key enzymes that catalyze the biosynthesis of cytokinin and are also important rate-limiting enzymes of cytokinin, and it is closely related to the stress resistance of plants. Here, ten ZoIPTs had been identified from ginger genome through the bioinformatics analysis, designated ZoIPT1~ZoIPT10. The encoded protein ranged from 283 to 491 amino acids, with the molecular weight of 31.14 to 54.02 kDa, and the isoelectric point pI of 4.97 to 9.37. All these ZoIPTs were predicted to be hydrophilic. Transcriptome data analysis showed that ZoIPTs showed tissue-specific transcriptional patterns and could respond to stress treatments such as disease and low temperature. ZoIPT3 and ZoIPT5 were highly expressed at different growth stages, different tissues, and in response to low temperature and disease stress. qRT-PCR analysis showed that ZoIPTs was responsive to drought, flooding and salt stress. Under flooding and salt treatment conditions, the significant induction of ZoIPT3 in rhizomes was observed. Under drought stress, the expression of ZoIPT5 in leaves and rhizomes were significantly increased. In summary, with the results of the systematic identification, evolutionary analysis, characteristic analysis, promoter analysis, as well as transcriptional pattern analysis, and analyzed the expression patterns of ZoIPT genes under drought, flooding and salt stress, this study provided a theoretical basis for further in-depth research on the biological functions of ZoIPTs in regulating growth and development and stress responses in ginger.