Transcriptome Atlas of 16 Donkey Tissues

Donkeys (Equus asinus) are important livestock with great economic value in meat, skin, and milk production. However, a lack of knowledge of the transcriptome landscape across a wide range of donkey tissues limits genetic selective breeding and conservation. Here we used transcriptomics to describe...

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Main Authors: Yinan Wang, Xinyao Miao, Zicheng Zhao, Yonghui Wang, Shuaicheng Li, Changfa Wang
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-08-01
Series:Frontiers in Genetics
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fgene.2021.682734/full
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author Yinan Wang
Yinan Wang
Xinyao Miao
Xinyao Miao
Zicheng Zhao
Yonghui Wang
Shuaicheng Li
Changfa Wang
author_facet Yinan Wang
Yinan Wang
Xinyao Miao
Xinyao Miao
Zicheng Zhao
Yonghui Wang
Shuaicheng Li
Changfa Wang
author_sort Yinan Wang
collection DOAJ
description Donkeys (Equus asinus) are important livestock with great economic value in meat, skin, and milk production. However, a lack of knowledge of the transcriptome landscape across a wide range of donkey tissues limits genetic selective breeding and conservation. Here we used transcriptomics to describe the transcriptome landscape, classify the tissue-specific gene expression across all primary donkey tissues, and present supplementary analyses on the protein level of additional donkey milk samples. Overall, 16,013 protein-coding genes and 21,983 transcripts were mapped to the reference genome, including 6,778 ubiquitously expressed genes and 2,601 tissue-enriched genes. Functional analysis revealed that the function of the tissue-enriched genes was highly tissue specific. Tissue-elevated genes that could be associated with unique phenotypes in donkey were analyzed. The results showed that, compared with those in human and other livestock, the lysozyme gene in donkey breast was specifically and highly expressed. The calcium-binding lysozyme, encoded by the lysozyme gene, was also detected in high amounts in donkey milk. Given those intact lysozyme genes that predict potentially functional calcium-binding lysozyme found in only a few species (e.g., donkey and horse), the high expression of the lysozyme gene in donkey breast may contribute to the high lysozyme content in donkey milk. Furthermore, 71% of the proteins in donkey milk overlapped with human milk protein, higher than the overlapping rates of bovine, sheep, and swine with humans. The donkey transcriptomic resource contributes to the available genomic resources to interpret the molecular mechanisms underlying phenotype traits.
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spelling doaj.art-24ae396e8ce94186a2be770ab8b255df2022-12-21T20:00:28ZengFrontiers Media S.A.Frontiers in Genetics1664-80212021-08-011210.3389/fgene.2021.682734682734Transcriptome Atlas of 16 Donkey TissuesYinan Wang0Yinan Wang1Xinyao Miao2Xinyao Miao3Zicheng Zhao4Yonghui Wang5Shuaicheng Li6Changfa Wang7Liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng, ChinaCollege of Forensic Medicine, Xi’an Jiaotong University, Xi’an, ChinaCollege of Forensic Medicine, Xi’an Jiaotong University, Xi’an, ChinaDepartment of Computer Science, City University of Hong Kong, Hong Kong, ChinaShenzhen Byoryn Technology Co., Ltd, Shenzhen, ChinaLiaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng, ChinaDepartment of Computer Science, City University of Hong Kong, Hong Kong, ChinaLiaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding, Liaocheng University, Liaocheng, ChinaDonkeys (Equus asinus) are important livestock with great economic value in meat, skin, and milk production. However, a lack of knowledge of the transcriptome landscape across a wide range of donkey tissues limits genetic selective breeding and conservation. Here we used transcriptomics to describe the transcriptome landscape, classify the tissue-specific gene expression across all primary donkey tissues, and present supplementary analyses on the protein level of additional donkey milk samples. Overall, 16,013 protein-coding genes and 21,983 transcripts were mapped to the reference genome, including 6,778 ubiquitously expressed genes and 2,601 tissue-enriched genes. Functional analysis revealed that the function of the tissue-enriched genes was highly tissue specific. Tissue-elevated genes that could be associated with unique phenotypes in donkey were analyzed. The results showed that, compared with those in human and other livestock, the lysozyme gene in donkey breast was specifically and highly expressed. The calcium-binding lysozyme, encoded by the lysozyme gene, was also detected in high amounts in donkey milk. Given those intact lysozyme genes that predict potentially functional calcium-binding lysozyme found in only a few species (e.g., donkey and horse), the high expression of the lysozyme gene in donkey breast may contribute to the high lysozyme content in donkey milk. Furthermore, 71% of the proteins in donkey milk overlapped with human milk protein, higher than the overlapping rates of bovine, sheep, and swine with humans. The donkey transcriptomic resource contributes to the available genomic resources to interpret the molecular mechanisms underlying phenotype traits.https://www.frontiersin.org/articles/10.3389/fgene.2021.682734/fulldonkeyRNA sequencingproteomicsiBAQlysozyme
spellingShingle Yinan Wang
Yinan Wang
Xinyao Miao
Xinyao Miao
Zicheng Zhao
Yonghui Wang
Shuaicheng Li
Changfa Wang
Transcriptome Atlas of 16 Donkey Tissues
Frontiers in Genetics
donkey
RNA sequencing
proteomics
iBAQ
lysozyme
title Transcriptome Atlas of 16 Donkey Tissues
title_full Transcriptome Atlas of 16 Donkey Tissues
title_fullStr Transcriptome Atlas of 16 Donkey Tissues
title_full_unstemmed Transcriptome Atlas of 16 Donkey Tissues
title_short Transcriptome Atlas of 16 Donkey Tissues
title_sort transcriptome atlas of 16 donkey tissues
topic donkey
RNA sequencing
proteomics
iBAQ
lysozyme
url https://www.frontiersin.org/articles/10.3389/fgene.2021.682734/full
work_keys_str_mv AT yinanwang transcriptomeatlasof16donkeytissues
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AT xinyaomiao transcriptomeatlasof16donkeytissues
AT zichengzhao transcriptomeatlasof16donkeytissues
AT yonghuiwang transcriptomeatlasof16donkeytissues
AT shuaichengli transcriptomeatlasof16donkeytissues
AT changfawang transcriptomeatlasof16donkeytissues