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Genomic survey and expression analysis of cellulose synthase superfamily and COBRA-like gene family in Zanthoxylum bungeanum stipule thorns

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Abstract

The Cellulose Synthase gene (CS) superfamily and COBRA-like (COBL) gene family are essential for synthesizing cellulose and hemicellulose, which play a crucial role in cell wall biosynthesis and the hardening of plant tissues. Our study identified 126 ZbCS and 31 ZbCOBL genes from the Zanthoxylum bungeanum (Zb) genome. Phylogenetic analysis and conservative domain analysis unfolded that ZbCS and ZbCOBL genes were divided into seven and two subfamilies, respectively. Gene duplication data suggested that more than 75% of these genes had tandem and fragment duplications. Codon usage patterns analysis indicated that the ZbCS and ZbCOBL genes prefer ending with A/T base, with weak codon preference. Furthermore, seven key ZbCS and five key ZbCOBL genes were identified based on the content of cellulose and hemicellulose and the expression characteristics of ZbCS and ZbCOBL genes in various stages of stipule thorns. Altogether, these results improve the understanding of CS and COBL genes and provide valuable reference data for cultivating Zb with soft thorns.

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Funding

This research was supported by the Natural Science Basic Research Project of Shaanxi Province (2023-JC-YB-197) and Young Breeding Expert Support Program of Yangling Agricultural Hi-tech Industries Demonstration Zone.

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Contributions

WG, JN, JY, and JW performed the experiments. WG, SW, and XZ analyzed the data and prepared Figs and tables. WG, YL, and YL wrote the paper and reviewed the draft. All authors have read and agreed to the published version of the manuscript.

Corresponding authors

Correspondence to Yonghong Liu or Yulin Liu.

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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Fig. S1

Conserved domains of ZbCS and ZbCOBL gene families. (a) ZbCS superfamily. (b) ZbCOBL gene family (TIF 3162 kb)

Fig. S2

Gene structure of the ZbCS and ZbCOBL gene families. (a) ZbCS superfamily. (b) ZbCOBL gene family (TIF 4499 kb)

Fig. S3

Conserved motif of the ZbCS and ZbCOBL gene families. (a) ZbCS superfamily. (b) ZbCOBL gene family (TIF 4751 kb)

Fig. S4

The structure of 10 motif logos in ZbCS genes. The downscale represents the position of the corresponding amino acid in the motif. The size of amino acids represents the degree of conservation. The red line box indicates the specific motif of the gene family (TIF 9762 kb)

Fig. S5

The structure of 10 motif logos in ZbCOBL genes. The downscale represents the position of the corresponding amino acid in the motif. The size of amino acids represents the degree of conservation. The red line box indicates the specific motif of the gene family (TIF 7933 kb)

Fig. S6

Cis-element of the ZbCS and ZbCOBL gene family. (a) ZbCS superfamily. (b) ZbCOBL gene family (TIF 7094 kb)

Fig. S7

Statistics of cis-elements of the ZbCS and ZbCOBL gene families. (a) Statistics of cis-elements of the ZbCS genes. (b) Statistics of cis-elements of the ZbCOBL genes. The top ten cis-elements were displayed (TIF 95 kb)

Fig. S8

Genomic distribution of ZbCS and ZbCOBL genes on the chromosome. The red gene in the same chromosome indicates tandem duplication. The gene id and the black line on the bars show the approximate location of the ZbCS and ZbCOBL. The scale illustrates the length of chromosomes (TIF 10902 kb)

Fig. S9

Analysis of codon preference in ZbCS and ZbCOBL genes. (a) Neutral plot analysis. (b) PR2 plot analysis. (c) ENC map analysis (TIF 24642 kb)

Fig. S10

Optimal codon analysis of CS and COBL gene family in Zanthoxylum bungeanum (Zb). The bar chart above represents the number of italicized codons below. The black dots in the graph below indicate that the corresponding codon is the optimal codon of the corresponding subfamily. The measured color bands and numbers on the left represent the number of optimal codons in the corresponding subfamily (TIF 3557 kb)

Table S1

Primers for real-time quantitative PCR (XLSX 22 kb)

Table S2

Classification and characterization of the putative CS and COBL gene families in Zanthoxylum bungeanum (Zb) (XLSX 23 kb)

Table S3

Duplications of ZbCS and ZbCOBL genes in Zanthoxylum bungeanum (Zb) (XLSX 17 kb)

Table S4

Correlation analysis between cellulose/hemicellulose and related gene expression in Zanthoxylum bungeanum (Zb) (XLSX 13 kb)

Table S5

The key genes of ZbCS and ZbCOBL genes (XLSX 8 kb)

Table S6

Homologous genes and functions of key genes in Arabidopsis thaliana (At) (XLSX 10 kb)

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Gao, W., Nie, J., Yao, J. et al. Genomic survey and expression analysis of cellulose synthase superfamily and COBRA-like gene family in Zanthoxylum bungeanum stipule thorns. Physiol Mol Biol Plants 30, 369–382 (2024). https://doi.org/10.1007/s12298-024-01432-x

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  • DOI: https://doi.org/10.1007/s12298-024-01432-x

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