Genome-Wide Identification and Comparative Analysis of WOX Genes in Four Euphorbiaceae Species and Their Expression Patterns in Jatropha curcas

Wang, Zhanjun; Cai, Qianwen; Xia, Haimeng; Han, Bin; Li, Min-Hui; Wang, Yue; Zhu, Meiping; Chen, Jiao; Wang, Dandan; Zhu, Jun; Yuan, Wenya; Zhu, Daoben; Xu, Congcong; Wang, Hongyan; Zhou, Minghui; Xie, Zhaoxiong; Shi, Jisen; Chen, Jinhui

doi:10.3389/fgene.2022.878554

Cited by 4 publications

(1 citation statement)

References 72 publications

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“…WOX genes encode for TFs, which belong to the homeobox superclass; these genes play important roles in plant development and the response to various biotic and abiotic stresses [ 22 , 23 , 28 ], as well as in plant growth regulators [ 29 ]. Therefore, this class of TFs has been identified and explored in several species, including Oryza sativa , Sorghum bicolor , Arabidopsis thaliana , Populus trichocarpa , Zea mays [ 46 ], Brassica napus [ 28 , 49 ], Jatropha curcas [ 50 ], cotton ( Gossypium arboreum, G . raimondii , and G. hirsutum ) [ 51 ], Solanaceae [ 52 ], Camelia sinensis [ 53 ], Glycine max [ 54 ], Pinus pinaster [ 55 ], Vitis vinifera [ 56 ], Picea abies [ 57 ], Salix suchowensis [ 58 ] Pyrus bretschneideri , Prunus persica , Prunus mume , and Fragaria vesca [ 59 ].…”

Section: Discussionmentioning

confidence: 99%

Genome-Wide Analysis of WOX Multigene Family in Sunflower (Helianthus annuus L.)

Riccucci

Vanni

Vangelisti

et al. 2023

IJMS

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The WUSCHEL-related homeobox (WOX) is a family of specific transcription factors involved in plant development and response to stress, characterized by the presence of a homeodomain. This study represents the first comprehensive characterization of the WOX family in a member of the Asteraceae family, the sunflower (H. annuus L.). Overall, we identified 18 putative HaWOX genes divided by phylogenetic analysis in three major clades (i.e., ancient, intermediate, and WUS). These genes showed conserved structural and functional motifs. Moreover, HaWOX has homogeneously distributed on H. annuus chromosomes. In particular, 10 genes originated after whole segment duplication events, underpinning a possible evolution of this family along with the sunflower genome. In addition, gene expression analysis evidenced a specific pattern of regulation of the putative 18 HaWOX during embryo growth and in ovule and inflorescence meristem differentiation, suggesting a pivotal role for this multigenic family in sunflower development. The results obtained in this work improved the understanding of the WOX multigenic family, providing a resource for future study on functional analysis in an economically valuable species such as sunflower.

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Section: Discussionmentioning

confidence: 99%

Genome-Wide Analysis of WOX Multigene Family in Sunflower (Helianthus annuus L.)

Riccucci

Vanni

Vangelisti

et al. 2023

IJMS

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Comprehensive Analysis of WUSCEL-Related Homeobox Gene Family in Ramie (Boehmeria nivea) Indicates Its Potential Role in Adventitious Root Development

Abubakar,

Wu,

Chen

et al. 2023

Biology

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A WUSCHEL-related homeobox (WOX) gene family has been implicated in promoting vegetative organs to embryonic transition and maintaining plant embryonic stem cell identity. Using genome-wide analysis, we identified 17 candidates, WOX genes in ramie (Boehmeria nivea). The genes (BnWOX) showed highly conserved homeodomain regions typical of WOX. Based on phylogenetic analysis, they were classified into three distinct groups: modern, intermediate, and ancient clades. The genes displayed 65% and 35% collinearities with their Arabidopsis thaliana and Oryza sativa ortholog, respectively, and exhibited similar motifs, suggesting similar functions. Furthermore, four segmental duplications (BnWOX10/14, BnWOX13A/13B, BnWOX9A/9B, and BnWOX6A/Maker00021031) and a tandem-duplicated pair (BnWOX5/7) among the putative ramie WOX genes were obtained, suggesting that whole-genome duplication (WGD) played a role in WOX gene expansion. Expression profiling analysis of the genes in the bud, leaf, stem, and root of the stem cuttings revealed higher expression levels of BnWOX10 and BnWOX14 in the stem and root and lower in the leaf consistent with the qRT-PCR analysis, suggesting their direct roles in ramie root formation. Analysis of the rooting characteristics and expression in the stem cuttings of sixty-seven different ramie genetic resources showed a possible involvement of BnWOX14 in the adventitious rooting of ramie. Thus, this study provides valuable information on ramie WOX genes and lays the foundation for further research.

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Induction of Somatic Embryogenesis in Plants: Different Players and Focus on WUSCHEL and WUS-RELATED HOMEOBOX (WOX) Transcription Factors

Fambrini

Usai

Pugliesi

2022

IJMS

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In plants, other cells can express totipotency in addition to the zygote, thus resulting in embryo differentiation; this appears evident in apomictic and epiphyllous plants. According to Haberlandt’s theory, all plant cells can regenerate a complete plant if the nucleus and the membrane system are intact. In fact, under in vitro conditions, ectopic embryos and adventitious shoots can develop from many organs of the mature plant body. We are beginning to understand how determination processes are regulated and how cell specialization occurs. However, we still need to unravel the mechanisms whereby a cell interprets its position, decides its fate, and communicates it to others. The induction of somatic embryogenesis might be based on a plant growth regulator signal (auxin) to determine an appropriate cellular environment and other factors, including stress and ectopic expression of embryo or meristem identity transcription factors (TFs). Still, we are far from having a complete view of the regulatory genes, their target genes, and their action hierarchy. As in animals, epigenetic reprogramming also plays an essential role in re-establishing the competence of differentiated cells to undergo somatic embryogenesis. Herein, we describe the functions of WUSCHEL-RELATED HOMEOBOX (WOX) transcription factors in regulating the differentiation–dedifferentiation cell process and in the developmental phase of in vitro regenerated adventitious structures.

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Genome-Wide Identification and Comparative Analysis of WOX Genes in Four Euphorbiaceae Species and Their Expression Patterns in Jatropha curcas

Cited by 4 publications

References 72 publications

Genome-Wide Analysis of WOX Multigene Family in Sunflower (Helianthus annuus L.)

Genome-Wide Analysis of WOX Multigene Family in Sunflower (Helianthus annuus L.)

Comprehensive Analysis of WUSCEL-Related Homeobox Gene Family in Ramie (Boehmeria nivea) Indicates Its Potential Role in Adventitious Root Development

Induction of Somatic Embryogenesis in Plants: Different Players and Focus on WUSCHEL and WUS-RELATED HOMEOBOX (WOX) Transcription Factors

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