Translational regulation,especially tissue-or cell type-specific gene regulation,plays essential roles in plant growth and development.Thermo-sensitive genic male sterile(TGMS)lines have been widely used for hybrid breeding in rice(Oryza sativa).However,little is known about translational regulation during repro-ductive stage in TGMS rice.Here,we use translating ribosome affinity purification(TRAP)combined with RNA sequencing to investigate the reproductive tissue-specific translatome of TGMS rice expressing FLAG-tagged ribosomal protein L18(RPL18)from the germline-specific promoter MEIOSIS ARRESTED AT LEPTOTENE1(MEL1).Differentially expressed genes at the transcriptional and translational levels are enriched in pollen and anther-related formation and development processes.These contain a number of genes reported to be involved in tapetum programmed cell death(PCD)and lipid metabolism during pollen development and anther dehiscence in rice,including several encoding transcription factors and key en-zymes,as well as several long non-coding RNAs(lncRNAs)that potentially affect tapetum and pollen-related genes in male sterility.This study represents the comprehensive reproductive tissue-specific characterization of the translatome in TGMS rice.These results contribute to our understanding of the molecular basis of sterility in TGMS rice and will facilitate further genetic manipulation of TGMS rice in two-line breeding systems.

Wei Liu;Jing Sun;Ji Li;Chunyan Liu;Fuyan Si;Bin Yan;Zhen Wang;Xianwei Song;Yuanzhu Yang;Yuxian Zhu;Xiaofeng Cao

College of Life Sciences,Wuhan University,Wuhan,Hubei 430072,China;State Key Laboratory of Plant Genomics and National Center for Plant Gene Research,Institute of Genetics and Developmental Biology,Chinese Academy of Sciences,Beijing 100101,China;Department of Rice Breeding,Hunan Yahua Seed Scientific Research Institute,Changsha,Hunan 410119,China;Institute for Advanced Studies,Wuhan University,Wuhan,Hubei 430072,China

遗传学报

[1]Wei Liu;Jing Sun;Ji Li;Chunyan Liu;Fuyan Si;Bin Yan;Zhen Wang;Xianwei Song;Yuanzhu Yang;Yuxian Zhu;Xiaofeng Cao-.Reproductive tissue-specific translatome of a rice thermo-sensitive genic male sterile line)[J].遗传学报,2022(07):624-635

translatome,RPL18,MEIOSIS,ARRESTED,LEPTOTENE1,tapetum

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