Comparative Transcriptome and DNA Methylation Analysis of Phenotypic Plasticity in the Pacific Abalone (Haliotis discus hannai)

被引:9
|
作者
Huang, Zekun [1 ,2 ,3 ]
Xiao, Qizhen [1 ,2 ,3 ]
Yu, Feng [1 ,2 ,3 ]
Gan, Yang [1 ,2 ,3 ]
Lu, Chengkuan [1 ,2 ,3 ]
Peng, Wenzhu [1 ,2 ,3 ]
Zhang, Yifang [1 ,2 ,3 ]
Luo, Xuan [2 ,3 ]
Chen, Nan [4 ]
You, Weiwei [1 ,2 ,3 ]
Ke, Caihuan [1 ,2 ,3 ]
机构
[1] Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Peoples R China
[2] Xiamen Univ, Coll Ocean & Earth Sci, Xiamen, Peoples R China
[3] Xiamen Univ, Fujian Key Lab Genet & Breeding Marine Organisms, Xiamen, Peoples R China
[4] Jimei Univ, Coll Fisheries, Xiamen, Peoples R China
来源
FRONTIERS IN PHYSIOLOGY | 2021年 / 12卷
基金
中国国家自然科学基金;
关键词
transcriptome; DNA methylation; phenotypic plasticity; Haliotis discus hannai; climate change; high temperatures; POPULATIONS; EXPRESSION; STRESS;
D O I
10.3389/fphys.2021.683499
中图分类号
Q4 [生理学];
学科分类号
071003 ;
摘要
Phenotypic plasticity is an adaptive mechanism used by organisms to cope with environmental fluctuations. Pacific abalone (Haliotis discus hannai) are large-scale farmed in the temperate area of northern China and in the warmer waters of southern China. RNA-seq and comparative transcriptomic analysis here were performed to determine if the northern and southern populations have evolved divergent plasticity and if functional differences are associated with protein synthesis and growth-related biological progress. The DNA methylation (5mC) landscape of H. discus hannai from the two populations using whole genomic bisulfite sequencing (WGBS), exhibited different epigenetic patterns. The southern population had significant genomic hypo-methylation that may have resulted from long-term acclimation to heat stress. Combining 790 differentially expressed genes (DEGs) and 7635 differentially methylated genes (DMGs), we found that methylation within the gene body might be important in predicting abalone gene expression. Genes related to growth, development, transduction, and apoptosis may be regulated by methylation and could explain the phenotypic divergence of H. discus hannai. Our findings not only emphasize the significant roles of adaptive plasticity in the acclimation of H. discus hannai to high temperatures but also provide a new understanding of the epigenetic mechanism underlying the phenotypic plasticity in adaptation to climate change for marine organisms.
引用
收藏
页数:11
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