Genome-wide identification and expression profiling of the bZIP gene family in Chrysanthemum indicum and the functional analysis of CibZIP29 under cadmium stress

Recent industrial activities have increased cadmium (Cd) contamination in soils, negatively affecting crop growth and agricultural development. Chrysanthemum indicum represents a significant wild species within the Chrysanthemum genus. Its distinctive resistance and adaptability serve as valuable re...

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Main Authors: Shengyan Chen, Yin Zhang, Kaiyuan Zhang, Shuguang Liu, Yujia Yang, Xingnong Xu
Format: Article
Language:English
Published: Maximum Academic Press 2025-01-01
Series:Ornamental Plant Research
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Online Access:https://www.maxapress.com/article/doi/10.48130/opr-0025-0010
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author Shengyan Chen
Yin Zhang
Kaiyuan Zhang
Shuguang Liu
Yujia Yang
Xingnong Xu
author_facet Shengyan Chen
Yin Zhang
Kaiyuan Zhang
Shuguang Liu
Yujia Yang
Xingnong Xu
author_sort Shengyan Chen
collection DOAJ
description Recent industrial activities have increased cadmium (Cd) contamination in soils, negatively affecting crop growth and agricultural development. Chrysanthemum indicum represents a significant wild species within the Chrysanthemum genus. Its distinctive resistance and adaptability serve as valuable references for the enhancement of ornamental chrysanthemum breeding programs. However, the role of bZIP family of Cd stress in C. indicum remains unclear. This study conducted a genome-wide identification and expression analysis of bZIP genes in C. indicum, identifying 65 CibZIP genes distributed across nine chromosomes. Phylogenetic analysis grouped them into 12 subgroups, supported by conserved motifs, gene, and protein structure analyses. Tandem and segmental duplications were found to be key drivers of CibZIP gene family expansion, with Ka/Ks analysis indicating purifying selection of duplicated genes. Promoter analysis revealed cis-acting elements involved in plant development and stress response. Transcriptomic data showed that CibZIP genes are highly expressed in different tissues and play significant roles in Cd stress tolerance. RT-qPCR analysis further confirmed that specific CibZIP genes, especially CibZIP29, are upregulated in response to Cd stress. Overexpression of CibZIP29 in transgenic Arabidopsis enhanced Cd tolerance, providing new insights into the molecular mechanisms underlying Cd stress response in C. indicum. These findings contribute to understanding the role of CibZIP genes in Cd tolerance and will support future research on Cd stress mechanisms in Chrysanthemum.
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spelling doaj-art-ea183799fa0c4bd786910b9d1c3c5afc2025-08-20T02:12:33ZengMaximum Academic PressOrnamental Plant Research2769-20942025-01-015111710.48130/opr-0025-0010opr-0025-0010Genome-wide identification and expression profiling of the bZIP gene family in Chrysanthemum indicum and the functional analysis of CibZIP29 under cadmium stressShengyan Chen0Yin Zhang1Kaiyuan Zhang2Shuguang Liu3Yujia Yang4Xingnong Xu5College of Landscape Architecture, Northeast Forestry University, Haerbin 150040, Heilongjiang, ChinaCollege of Landscape Architecture, Northeast Forestry University, Haerbin 150040, Heilongjiang, ChinaCollege of Landscape Architecture, Northeast Forestry University, Haerbin 150040, Heilongjiang, ChinaCollege of Landscape Architecture, Northeast Forestry University, Haerbin 150040, Heilongjiang, ChinaCollege of Landscape Architecture, Northeast Forestry University, Haerbin 150040, Heilongjiang, ChinaYancheng Third People's Hospital, Yancheng 224008, Jiangsu, ChinaRecent industrial activities have increased cadmium (Cd) contamination in soils, negatively affecting crop growth and agricultural development. Chrysanthemum indicum represents a significant wild species within the Chrysanthemum genus. Its distinctive resistance and adaptability serve as valuable references for the enhancement of ornamental chrysanthemum breeding programs. However, the role of bZIP family of Cd stress in C. indicum remains unclear. This study conducted a genome-wide identification and expression analysis of bZIP genes in C. indicum, identifying 65 CibZIP genes distributed across nine chromosomes. Phylogenetic analysis grouped them into 12 subgroups, supported by conserved motifs, gene, and protein structure analyses. Tandem and segmental duplications were found to be key drivers of CibZIP gene family expansion, with Ka/Ks analysis indicating purifying selection of duplicated genes. Promoter analysis revealed cis-acting elements involved in plant development and stress response. Transcriptomic data showed that CibZIP genes are highly expressed in different tissues and play significant roles in Cd stress tolerance. RT-qPCR analysis further confirmed that specific CibZIP genes, especially CibZIP29, are upregulated in response to Cd stress. Overexpression of CibZIP29 in transgenic Arabidopsis enhanced Cd tolerance, providing new insights into the molecular mechanisms underlying Cd stress response in C. indicum. These findings contribute to understanding the role of CibZIP genes in Cd tolerance and will support future research on Cd stress mechanisms in Chrysanthemum.https://www.maxapress.com/article/doi/10.48130/opr-0025-0010chrysanthemum indicumbzipscd stresscibzip29
spellingShingle Shengyan Chen
Yin Zhang
Kaiyuan Zhang
Shuguang Liu
Yujia Yang
Xingnong Xu
Genome-wide identification and expression profiling of the bZIP gene family in Chrysanthemum indicum and the functional analysis of CibZIP29 under cadmium stress
Ornamental Plant Research
chrysanthemum indicum
bzips
cd stress
cibzip29
title Genome-wide identification and expression profiling of the bZIP gene family in Chrysanthemum indicum and the functional analysis of CibZIP29 under cadmium stress
title_full Genome-wide identification and expression profiling of the bZIP gene family in Chrysanthemum indicum and the functional analysis of CibZIP29 under cadmium stress
title_fullStr Genome-wide identification and expression profiling of the bZIP gene family in Chrysanthemum indicum and the functional analysis of CibZIP29 under cadmium stress
title_full_unstemmed Genome-wide identification and expression profiling of the bZIP gene family in Chrysanthemum indicum and the functional analysis of CibZIP29 under cadmium stress
title_short Genome-wide identification and expression profiling of the bZIP gene family in Chrysanthemum indicum and the functional analysis of CibZIP29 under cadmium stress
title_sort genome wide identification and expression profiling of the bzip gene family in chrysanthemum indicum and the functional analysis of cibzip29 under cadmium stress
topic chrysanthemum indicum
bzips
cd stress
cibzip29
url https://www.maxapress.com/article/doi/10.48130/opr-0025-0010
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