Characterization of the basic helix–loop–helix gene family and its tissue-differential expression in response to salt stress in poplar

The basic helix–loop–helix (bHLH) transcription factor gene family is one of the largest gene families and extensively involved in plant growth, development, and stress responses. However, limited studies are available on the gene family in poplar. In this study, we focused on 202 bHLH genes, explor...

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Main Authors: Kai Zhao, Shuxuan Li, Wenjing Yao, Boru Zhou, Renhua Li, Tingbo Jiang
Format: Article
Language:English
Published: PeerJ Inc. 2018-03-01
Series:PeerJ
Subjects:
Online Access:https://peerj.com/articles/4502.pdf
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author Kai Zhao
Shuxuan Li
Wenjing Yao
Boru Zhou
Renhua Li
Tingbo Jiang
author_facet Kai Zhao
Shuxuan Li
Wenjing Yao
Boru Zhou
Renhua Li
Tingbo Jiang
author_sort Kai Zhao
collection DOAJ
description The basic helix–loop–helix (bHLH) transcription factor gene family is one of the largest gene families and extensively involved in plant growth, development, and stress responses. However, limited studies are available on the gene family in poplar. In this study, we focused on 202 bHLH genes, exploring their DNA and protein sequences and physicochemical properties. According to their protein sequence similarities, we classified the genes into 25 groups with specific motif structures. In order to explore their expressions, we performed gene expression profiling using RNA-Seq and identified 19 genes that display tissue-differential expression patterns without treatment. Furthermore, we also performed gene expression profiling under salt stress. We found 74 differentially expressed genes (DEGs), which are responsive to the treatment. A total of 18 of the 19 genes correspond well to the DEGs. We validated the results using reverse transcription quantitative real-time PCR. This study lays the foundation for future studies on gene cloning, transgenes, and biological mechanisms.
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spelling doaj.art-2ba621e3da4c4a87aac9c240d2c5c0b12023-12-03T11:33:55ZengPeerJ Inc.PeerJ2167-83592018-03-016e450210.7717/peerj.4502Characterization of the basic helix–loop–helix gene family and its tissue-differential expression in response to salt stress in poplarKai Zhao0Shuxuan Li1Wenjing Yao2Boru Zhou3Renhua Li4Tingbo Jiang5State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, ChinaState Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, ChinaState Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, ChinaState Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, ChinaState Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, ChinaState Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, ChinaThe basic helix–loop–helix (bHLH) transcription factor gene family is one of the largest gene families and extensively involved in plant growth, development, and stress responses. However, limited studies are available on the gene family in poplar. In this study, we focused on 202 bHLH genes, exploring their DNA and protein sequences and physicochemical properties. According to their protein sequence similarities, we classified the genes into 25 groups with specific motif structures. In order to explore their expressions, we performed gene expression profiling using RNA-Seq and identified 19 genes that display tissue-differential expression patterns without treatment. Furthermore, we also performed gene expression profiling under salt stress. We found 74 differentially expressed genes (DEGs), which are responsive to the treatment. A total of 18 of the 19 genes correspond well to the DEGs. We validated the results using reverse transcription quantitative real-time PCR. This study lays the foundation for future studies on gene cloning, transgenes, and biological mechanisms.https://peerj.com/articles/4502.pdfGene and protein structureSalt stressPoplar bHLH gene familyTissue-differential expression
spellingShingle Kai Zhao
Shuxuan Li
Wenjing Yao
Boru Zhou
Renhua Li
Tingbo Jiang
Characterization of the basic helix–loop–helix gene family and its tissue-differential expression in response to salt stress in poplar
PeerJ
Gene and protein structure
Salt stress
Poplar bHLH gene family
Tissue-differential expression
title Characterization of the basic helix–loop–helix gene family and its tissue-differential expression in response to salt stress in poplar
title_full Characterization of the basic helix–loop–helix gene family and its tissue-differential expression in response to salt stress in poplar
title_fullStr Characterization of the basic helix–loop–helix gene family and its tissue-differential expression in response to salt stress in poplar
title_full_unstemmed Characterization of the basic helix–loop–helix gene family and its tissue-differential expression in response to salt stress in poplar
title_short Characterization of the basic helix–loop–helix gene family and its tissue-differential expression in response to salt stress in poplar
title_sort characterization of the basic helix loop helix gene family and its tissue differential expression in response to salt stress in poplar
topic Gene and protein structure
Salt stress
Poplar bHLH gene family
Tissue-differential expression
url https://peerj.com/articles/4502.pdf
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