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Liang Y, Xian L, Pan J, Zhu K, Guo H, Liu B, Zhang N, Ou-Yang Y, Zhang Q, Zhang D. De Novo Genome Assembly of the Whitespot Parrotfish ( Scarus forsteni): A Valuable Scaridae Genomic Resource. Genes (Basel) 2024; 15:249. [PMID: 38397238 PMCID: PMC10888354 DOI: 10.3390/genes15020249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/01/2024] [Accepted: 02/09/2024] [Indexed: 02/25/2024] Open
Abstract
Scarus forsteni, a whitespot parrotfish from the Scaridae family, is a herbivorous fish inhabiting coral reef ecosystems. The deterioration of coral reefs has highly affected the habitats of the parrotfish. The decline in genetic diversity of parrotfish emphasizes the critical importance of conserving their genetic variability to ensure the resilience and sustainability of marine ecosystems for future generations. In this study, a genome of S. forsteni was assembled de novo through using Illumina and Nanopore sequencing. The 1.71-Gb genome of S. forsteni, was assembled into 544 contigs (assembly level: contig). It exhibited an N50 length of 17.97 Mb and a GC content percentage of 39.32%. Our BUSCO analysis revealed that the complete protein of the S. forsteni genome had 98.10% integrity. Combined with structure annotation data, 34,140 (74.81%) genes were functionally annotated out of 45,638 predicted protein-coding genes. Upon comparing the genome size and TE content of teleost fishes, a roughly linear relationship was observed between these two parameters. However, TE content is not a decisive factor in determining the genome size of S. forsteni. Population history analysis results indicate that S. forsteni experienced two major population expansions, both of which occurred before the last interglacial period. In addition, through a comparative genomic analysis of the evolutionary relationship of other species, it was found that S. forsteni had the closest relationship with Cheilinus undulatus, another member of the Labridae family. Our expansion and contraction analysis of the gene family showed that the expansion genes were mainly associated with immune diseases, organismal systems, and cellular processes. At the same time, cell transcription and translation, sex hormone regulation, and other related pathways were also more prominent in the positive selection genes. The genomic sequence of S. forsteni offers valuable resources for future investigations on the conservation, evolution, and behavior of fish species.
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Affiliation(s)
- Yu Liang
- Guangxi Marine Microbial Resources Industrialization Engineering Technology Research Center, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi Minzu University, 158 University Road, Nanning 530008, China
- Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China
| | - Lin Xian
- Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China
- Sanya Tropical Fisheries Research Institute, Sanya 572018, China
- Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou 510300, China
| | - Jinmin Pan
- Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China
| | - Kecheng Zhu
- Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China
- Sanya Tropical Fisheries Research Institute, Sanya 572018, China
- Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou 510300, China
| | - Huayang Guo
- Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China
- Sanya Tropical Fisheries Research Institute, Sanya 572018, China
- Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou 510300, China
| | - Baosuo Liu
- Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China
- Sanya Tropical Fisheries Research Institute, Sanya 572018, China
- Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou 510300, China
| | - Nan Zhang
- Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China
- Sanya Tropical Fisheries Research Institute, Sanya 572018, China
- Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou 510300, China
| | - Yan Ou-Yang
- Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China
| | - Qin Zhang
- Guangxi Marine Microbial Resources Industrialization Engineering Technology Research Center, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi Minzu University, 158 University Road, Nanning 530008, China
| | - Dianchang Zhang
- Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China
- Sanya Tropical Fisheries Research Institute, Sanya 572018, China
- Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou 510300, China
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Qu M, Zhang Y, Gao Z, Zhang Z, Liu Y, Wan S, Wang X, Yu H, Zhang H, Liu Y, Schneider R, Meyer A, Lin Q. The genetic basis of the leafy seadragon's unique camouflage morphology and avenues for its efficient conservation derived from habitat modeling. SCIENCE CHINA. LIFE SCIENCES 2023:10.1007/s11427-022-2317-6. [PMID: 37204606 DOI: 10.1007/s11427-022-2317-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 03/03/2023] [Indexed: 05/20/2023]
Abstract
The leafy seadragon certainly is among evolution's most "beautiful and wonderful" species aptly named for its extraordinary camouflage mimicking its coastal seaweed habitat. However, limited information is known about the genetic basis of its phenotypes and conspicuous camouflage. Here, we revealed genomic signatures of rapid evolution and positive selection in core genes related to its camouflage, which allowed us to predict population dynamics for this species. Comparative genomic analysis revealed that seadragons have the smallest olfactory repertoires among all ray-finned fishes, suggesting adaptations to the highly specialized habitat. Other positively selected and rapidly evolving genes that serve in bone development and coloration are highly expressed in the leaf-like appendages, supporting a recent adaptive shift in camouflage appendage formation. Knock-out of bmp6 results in dysplastic intermuscular bones with a significantly reduced number in zebrafish, implying its important function in bone formation. Global climate change-induced loss of seagrass beds now severely threatens the continued existence of this enigmatic species. The leafy seadragon has a historically small population size likely due to its specific habitat requirements that further exacerbate its vulnerability to climate change. Therefore, taking climate change-induced range shifts into account while developing future protection strategies.
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Affiliation(s)
- Meng Qu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Southern Marine Science and Engineering Guangdong Laboratory (GML, Guangzhou), Guangzhou, 511458, China
- Sanya Institute of Oceanology, SCSIO, Sanya, 572000, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yingyi Zhang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Southern Marine Science and Engineering Guangdong Laboratory (GML, Guangzhou), Guangzhou, 511458, China
- Sanya Institute of Oceanology, SCSIO, Sanya, 572000, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zexia Gao
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, China
| | - Zhixin Zhang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Southern Marine Science and Engineering Guangdong Laboratory (GML, Guangzhou), Guangzhou, 511458, China
- Sanya Institute of Oceanology, SCSIO, Sanya, 572000, China
- Global Ocean and Climate Research Center, South China Sea Institute of Oceanology, Guangzhou, 510301, China
| | - Yali Liu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Southern Marine Science and Engineering Guangdong Laboratory (GML, Guangzhou), Guangzhou, 511458, China
- Sanya Institute of Oceanology, SCSIO, Sanya, 572000, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shiming Wan
- College of Fisheries, Key Lab of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xin Wang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Southern Marine Science and Engineering Guangdong Laboratory (GML, Guangzhou), Guangzhou, 511458, China
- Sanya Institute of Oceanology, SCSIO, Sanya, 572000, China
| | - Haiyan Yu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Southern Marine Science and Engineering Guangdong Laboratory (GML, Guangzhou), Guangzhou, 511458, China
- Sanya Institute of Oceanology, SCSIO, Sanya, 572000, China
| | - Huixian Zhang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Southern Marine Science and Engineering Guangdong Laboratory (GML, Guangzhou), Guangzhou, 511458, China
- Sanya Institute of Oceanology, SCSIO, Sanya, 572000, China
| | - Yuhong Liu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Southern Marine Science and Engineering Guangdong Laboratory (GML, Guangzhou), Guangzhou, 511458, China
- Sanya Institute of Oceanology, SCSIO, Sanya, 572000, China
| | - Ralf Schneider
- Marine Evolutionary Ecology, Zoological Institute, Kiel University, 24118, Kiel, Germany
| | - Axel Meyer
- Department of Biology, University of Konstanz, 78464, Konstanz, Germany.
| | - Qiang Lin
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Southern Marine Science and Engineering Guangdong Laboratory (GML, Guangzhou), Guangzhou, 511458, China.
- Sanya Institute of Oceanology, SCSIO, Sanya, 572000, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
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He L, Long X, Qi J, Wang Z, Huang Z, Wu S, Zhang X, Luo H, Chen X, Lin J, Yang Q, Huang S, Zhou Q, Zheng L. Genome and gene evolution of seahorse species revealed by the chromosome-level genome of Hippocampus abdominalis. Mol Ecol Resour 2021; 22:1465-1477. [PMID: 34698429 PMCID: PMC9298228 DOI: 10.1111/1755-0998.13541] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 10/13/2021] [Accepted: 10/19/2021] [Indexed: 11/29/2022]
Abstract
Seahorses belong to the teleost family Syngnathidae that evolved a distinct body plan and unique male pregnancy compared to other teleosts. As a classic model for studying evolution of viviparity and sexual selection of teleosts, seahorse species still lack a publicly available high‐quality reference genome. Here, we generated the genome assembly of the big‐belly seahorse, Hippocampus abdominalis with long‐read and Hi‐C technologies. We managed to place over 99% of the total length of 444.7 Mb of assembled genome into 21 linkage groups with almost no gaps. We reconstructed a phylogenomic tree with the big‐belly seahorse genome and other representative Syngnathidae and teleost species. We also reconstructed the historical population dynamics of four representative Syngnathidae species. We found the gene families that underwent expansion or contraction in the Syngnathidae ancestor were enriched for immune‐related or ion transporter gene ontology terms. Many of these genes were also reported to show a dynamic expression pattern during the pregnancy stages of H. abdominalis. We also identified putative positively selected genes in the Syngnathidae ancestor or in H. abdominalis, whose mouse mutants are enriched for abnormal craniofacial and limb morphological phenotypes. Overall, our study provides an important genome resource for evolutionary and developmental studies of seahorse species, and candidate genes for future experimental works.
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Affiliation(s)
- Libin He
- Fisheries Research Institute of Fujian, Xiamen, China
| | - Xin Long
- MOE Laboratory of Biosystems Homeostasis and Protection and Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Jianfei Qi
- Fisheries Research Institute of Fujian, Xiamen, China
| | - Zongji Wang
- MOE Laboratory of Biosystems Homeostasis and Protection and Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China.,Institute of Animal Sex and Development, Zhejiang Wanli University, Ningbo, China
| | - Zhen Huang
- Fujian Key Laboratory of Sustainable Utilization of Featured Marine Bioresources, College of Life Science, Fujian Normal University, Fuzhou, China
| | - Shuiqing Wu
- Fisheries Research Institute of Fujian, Xiamen, China
| | - Xingtan Zhang
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Huiyu Luo
- Fisheries Research Institute of Fujian, Xiamen, China
| | - Xinxin Chen
- Xiamen Xiaodeng Aquatic Science and Technology Company Limited, Xiamen, China
| | - Jinbo Lin
- Xiamen Xiaodeng Aquatic Science and Technology Company Limited, Xiamen, China
| | - Qiuhua Yang
- Fisheries Research Institute of Fujian, Xiamen, China
| | - Shiyu Huang
- Fisheries College of Jimei University, Xiamen, China
| | - Qi Zhou
- MOE Laboratory of Biosystems Homeostasis and Protection and Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China.,Department of Neuroscience and Developmental Biology, University of Vienna, Vienna, Austria.,Center for Reproductive Medicine, the Second Affiliated Hospital School of Medicine School of Medicine, Zhejiang University, Zhejiang University, Hangzhou, China
| | - Leyun Zheng
- Fisheries Research Institute of Fujian, Xiamen, China
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