DU Guofeng
College of Agriculture, Qingdao Agricultural University, Qingdao 266109,Shandong;Institute of Crop Sciences,Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement/National Center of Space Mutagenesis for Crop Improvement, Beijing 100081XIE Yongdun
Institute of Crop Sciences,Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement/National Center of Space Mutagenesis for Crop Improvement, Beijing 100081GUO Huijun
Institute of Crop Sciences,Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement/National Center of Space Mutagenesis for Crop Improvement, Beijing 100081XIONG Hongchun
Institute of Crop Sciences,Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement/National Center of Space Mutagenesis for Crop Improvement, Beijing 100081GU Jiayu
Institute of Crop Sciences,Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement/National Center of Space Mutagenesis for Crop Improvement, Beijing 100081ZHAO Linshu
Institute of Crop Sciences,Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement/National Center of Space Mutagenesis for Crop Improvement, Beijing 100081ZHAO Shirong
Institute of Crop Sciences,Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement/National Center of Space Mutagenesis for Crop Improvement, Beijing 100081DING Yuping
Institute of Crop Sciences,Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement/National Center of Space Mutagenesis for Crop Improvement, Beijing 100081SUI Li
China Institute of Atomic Energy, Beijing 102413LIU Luxiang
Institute of Crop Sciences,Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement/National Center of Space Mutagenesis for Crop Improvement, Beijing 1000811.College of Agriculture, Qingdao Agricultural University, Qingdao 266109,Shandong;2.Institute of Crop Sciences,Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement/National Center of Space Mutagenesis for Crop Improvement, Beijing 100081;3.China Institute of Atomic Energy, Beijing 102413
National Key Research and Development Program of China(2022YFD1200705)
As a new mutagen, lithium (7Li) ion beam plays an increasingly important role in crop mutation breeding. In this study, the characteristics of wheat DNA damage induced by 7Li ion beam irradiation treatment were explored by comet assay, and the transcriptional re-programming was preliminarily analyzed by transcriptome analysis. The wheat seedlings showed lower growth inhibition of wheat seedlings caused by 7Li ion beam irradiation, but seedlings leaf vein chlorosis to cracking, if compared with those treated by the conventional mutagenic gamma ray (γ). Based on GO and KEGG functional analysis of differentially expressed genes (DEGs) induced by irradiation, DEGs induced by 7Li ion beam irradiation were mainly enriched in cell wall synthesis and metabolism and glycerolipid metabolic pathways, while DEGs induced by γ ray irradiation were mainly enriched in photosynthetic metabolic pathways. That suggested that cell wall synthesis and metabolism and glycerolipid metabolic pathways are likely modulated by 7Li ion beam irradiation, while photosynthetic metabolic pathways are likely modified by γ ray irradiation. Gained from the results of transcription factor analysis of two radiation-induced DEGs, several transcription factor families, such as MYB, WRKY, bHLH and NAC, might specifically respond to 7Li ion beam irradiation. The results of this study implied that 7Li ion beam irradiation specifically modify the transcriptional re-programming of Whirly family transcription factors to regulate DNA damage repair, while the conventional γ ray irradiation likely induced the E2F / DP family transcription factors to regulate DNA damage repair.