Comparative DNA-methylome and transcriptome analysis reveals heterosis- and polyploidy-associated epigenetic changes in rice
文献类型: 外文期刊
作者: Rao, Xiaolan 1 ; Ren, Jun 1 ; Wang, Wei 1 ; Chen, Rongrong 1 ; Xie, Qian 1 ; Xu, Yanqing 1 ; Li, Dongmei 1 ; Song, Zhaojian 1 ; He, Yuchi 1 ; Cai, Detian 1 ; Yang, Pingfang 1 ; Lyu, Shiyou 1 ; Li, Li 3 ; Liu, Wei 4 ; Zhang, Xianhua 1 ;
作者机构: 1.Hubei Univ, Sch Life Sci, Wuhan 430062, Hubei, Peoples R China
2.Wuhan Polyploid Biotechnol Ltd Co, Wuhan 430345, Hubei, Peoples R China
3.Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha 410125, Hunan, Peoples R China
4.Tongji Univ, Shanghai East Hosp, Inst Regenerat Med, Sch Life Sci & Technol, Shanghai 200123, Peoples R China
关键词: Oryza sativa; Neotetraploid rice; Heterosis; Whole genome duplication; Epigenetic changes
期刊名称:CROP JOURNAL ( 影响因子:6.6; 五年影响因子:6.5 )
ISSN: 2095-5421
年卷期: 2023 年 11 卷 2 期
页码:
收录情况: SCI
摘要: Heterosis and polyploidy have an overwhelming influence on plant evolution. Recently, polyploid rice hybrids have been used to breed new rice varieties because they combine the advantages of both hetero-sis and polyploidy. In this study, we generated six rice lines: autotetraploid rice hybrids and their autote-traploid parents, diploid donors, and hybrids of the diploid donors. To investigate the molecular mechanism controlling the effects of both hybridization and polyploidization, we performed bisulfite and RNA sequencing on young panicles at the pollen meiosis stage to compare the DNA metabolomes and transcriptomes among the six rice lines. The hybrids lines were hypermethylated compared to their corresponding parents and the autotetraploid lines showed globally increased DNA methylation of their transposable elements compared to the diploid donors. The alteration in DNA methylation level corre-sponded to the differential gene expressions among the rice genotypes, suggesting that methylation changes induced by polyploidization and hybridization may affect gene expression. Groups of gene can-didates were identified that may be associated with heterosis and polyploidy. Our results provide DNA information that can be used to investigate epigenetic modification during heterosis and polyploidy in rice.(c) 2022 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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