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Genome-wide analysis of VPE family in four Gossypium species and transcriptional expression of VPEs in the upland cotton seedlings under abiotic stresses

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Abstract

Vacuolar processing enzymes (VPEs) play important roles in plant development, programmed cell death, and the responsiveness to biotic and abiotic stresses. To characterize the VPEs in upland cotton (Gossypium hirsutum), the VPE gene family within four Gossypium species, consisting of G. hirsutum, G. barbadense, G. arboreum, and G. raimondii, together with Arabidopsis thaliana, was comparatively analyzed at the genome-wide level. As a result, a total of 43 VPEs were identified, including 13 GhVPEs, 12 GbVPEs, 7 GaVPEs, and 7 GrVPEs, which are evenly distributed with one gene on a chromosome from four Gossypium species, respectively. The phylogenetic tree showed that the identified VPEs within the four Gossypium species could be categorized into β-type, δ-type, and γ-type VPE clades. Collinearity analysis presented 36 of intraspecies VPE-pairs and 152 of interspecies VPE-pairs, respectively, which are included in synteny blocks on chromosome. These results indicate that VPE duplication events have accorded well with the whole genome duplication. And expression profiles of GhVPEs in G. hirsutum seedlings demonstrated that the GhVPEs from the same clade are not necessarily identical in the pattern of transcriptional expression. Upon abiotic stresses (i.e., waterlogging and salt treatments), three GhVPEs (i.e., Ghir_A05G004610, Ghir_A09G011870, and Ghir_D09G011410) were significantly upregulated in their expression amounts, respectively. The GhVPE genes that presented inducible expression under some abiotic stresses may be applied to the improvement of resilience to abiotic stresses for the cultivated cottons.

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Data availability

Genome data of A. thaliana, G. raimondii, and G. arboreum, on the database Phytozome (https://phytozome.jgi.doe.gov). Genome data of G. hirsutum and G. barbadense, on the Gossypium new sequence database (http://ibi.zju.edu.cn/cotton). Information of the identified VPEs in Table 1, included in the manuscript.

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Funding

This research was funded by the Natural Science Foundation of Anhui Province, China (1808085MC58); the State Key Laboratory of Cotton Biology Open Fund, China (CB2018A13); and the Innovation Practice Project of Undergraduate Students of Anhui Province, China (201910364178).

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Contributions

DL designed the investigation. LZ and XW performed the data analysis and experiment. JT and XZ performed the data analysis. TY and YL performed the experiment. DL wrote the manuscript.

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Correspondence to Dahui Li.

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The authors declare no competing interests.

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Supplementary Information

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Supplementary file1 (DOCX 11421 KB)

10142_2021_818_MOESM2_ESM.xlsx

Supplementary file2 Primer pairs for detecting the transcriptional expression of GhVPEs using qRT-PCR method (XLSX 24 KB)

Supplementary file3 VPE gene pairs with collinearity relationship among the species examined (XLSX 19 KB)

Supplementary Fig. 1

(PNG 46993 KB)

10142_2021_818_MOESM4_ESM.tiff

High Resolution Image Sequence logos of the conserved domains of Peptidase_C13. The alignment was performed based on the amino-acid sequences of Peptidase_C13 from 43 VPEs identified. Histidine (H) and cystine (C), the essential residues for catalytic activity, are marked by boxes (TIFF 8015 KB)

Supplementary Fig. 2

(PNG 6129 KB)

10142_2021_818_MOESM5_ESM.tiff

High Resolution Image Phylogenetic tree constructed based on the amino-acid sequences of 41 VPEs, without two VPEs (Ghir_A06G009480 and Gorai.011G060200) containing incomplete sequences of Peptidase_C13. Three subgroups are indicated with I–III, among which subgroups I, II and III are categorized as β-type, δ-type, and γ-type VPEs, respectively. The Arabidopsis AtGPI8 (AT1G08750) and its potential homolog (Ghir_A11G027160) in G. hirsutum, were used as outgroup (OG). Asterisks mark the VPE IDs. Bootstrap-support was represented by circle at the individual node (TIFF 881 KB)

Supplementary Fig. 3

(PNG 17550 KB)

10142_2021_818_MOESM6_ESM.tiff

High Resolution Image Collinearity relationships between GbVPEs and GaVPEs (a), GrVPEs (b), GaVPEs and GrVPEs (c), or between AtVPEs and GbVPEs (d), GaVPEs (e), and GrVPEs (f), respectively. Chromosomes of Arabidopsis, G. barbadense, G. arboreum, and G. raimondii, are indicated with T1–T5, a1–d13, CA1–CA13, and CR1–CR13, respectively. Orange linkages indicate the intraspecies synteny blocks, while green ones refer to the interspecies synteny blocks, which contain the VPE gene-pairs with collinearity. The gene IDs labeled on chromosomes are VPEs identified (TIFF 2510 KB)

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Zhu, L., Wang, X., Tian, J. et al. Genome-wide analysis of VPE family in four Gossypium species and transcriptional expression of VPEs in the upland cotton seedlings under abiotic stresses. Funct Integr Genomics 22, 179–192 (2022). https://doi.org/10.1007/s10142-021-00818-4

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  • DOI: https://doi.org/10.1007/s10142-021-00818-4

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