scholarly journals Comprehensive Identification and Expression Analysis of the Members of the B-Box Gene Family of Cotton Involved in Flower bud Differentiation and Responses to Multiple Stresses

2021 ◽  
Author(s):  
Zhen Feng ◽  
Mengyu Li ◽  
Yi Li ◽  
Xu Yang ◽  
Hengling Wei ◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Gene Family ◽  
Selection Process ◽  
Biological Functions ◽  
Flower Bud ◽  
Protein Motifs ◽  
Genome Wide ◽  
Flower Bud Differentiation

Abstract Background: B-BOX (BBX) proteins are zinc-finger transcription factors with one or two BBX domains and sometimes a CCT domain. These proteins play an essential role in regulating plant growth and development, as well as in resisting abiotic stress. So far, the BBX gene family has been widely studied in other crops. However, no one has systematically studied the BBX gene in cotton. Results: In the present study, 17, 18, 37 and 33 BBX genes were detected in Gossypium arboreum, G. raimondii, G. hirsutum and G. barbadense, respectively, via genome-wide identification. Phylogenetic analysis showed that all BBX genes were divided into 5 main categories. The protein motifs and exon/intron structures indicated that each group of BBX genes was highly conserved. Collinearity analysis revealed that the amplification of BBX gene family in Gossypium spp. was mainly through segmental replication. Nonsynonymous (Ka)/ synonymous (Ks) substitution ratios indicated that the BBX gene family had undergone purification selection throughout the long-term natural selection process. Moreover, transcriptomic data showed that some GhBBX genes were highly expressed in floral organs. Transcriptome data analysis and qRT-PCR verification showed that different GhBBX genes had different biological functions in flower bud differentiation, abiotic stress and stress response. Conclusions: Our comprehensive analysis of BBX in G. hirsutum provides a basis for further study on the molecular role of GhBBXs in regulating flowering and cotton resistance to abiotic stress.

scholarly journals Genome-wide identification and comparative analysis of Dof gene family in Brassica napus

2020 ◽  
Author(s):  
Neeta Lohani ◽  
Saeid Babaei ◽  
Mohan B. Singh ◽  
Prem L. Bhalla
Keyword(s):  
Abiotic Stress ◽  
Brassica Napus ◽  
Gene Family ◽  
Stress Responses ◽  
Structure Evolution ◽  
Oilseed Crop ◽  
Evolutionary Analysis ◽  
Abiotic Stress Response ◽  
Protein Motifs ◽  
Genome Wide

AbstractDOF, DNA binding with one finger proteins are plant-specific transcription factors shown to play roles in diverse plant functions. However, a—little is known about DOF protein repertoire of the allopolyploid crop, Brassica napus. Here, we report genome-wide identification and systematic analysis of the Dof transcription factor family in this important oilseed crop. We identified 117 Brassica napus Dof genes (BnaDofs). So far, this is the largest number of Dof genes reported in a single eudicot species. Based on phylogenetic analysis, BnaDofs were classified into nine groups (A, B1, B2. C1, C2.1, C2.2, C3, D1, D2). Most members belonging to a particular group displayed conserved gene structural organisation and similar protein motifs distribution. Chromosomal localisation analysis highlighted the uneven distribution of BnaDofs across all chromosomes. Evolutionary analysis exemplified that the divergence of Brassica genus from Arabidopsis, the whole genome triplication event, and the hybridisation of B. oleracea and B. rapa to form B. napus, followed by gene loss and rearrangements, led to the expansion and divergence of Dof TF gene family in B. napus. Functional annotation of BnaDof proteins, cis-element analysis of their promoters suggested potential roles in organ development, the transition from vegetative to the reproductive stage, light responsiveness, phytohormone responsiveness as well as abiotic stress responses. Furthermore, the transcriptomic analysis highlighted the preferential tissue-specific expression patters of BnaDofs and their role in response to various abiotic stress. Overall, this study provides a comprehensive understanding of the molecular structure, evolution, and potential functional roles of Dof genes in plant development and abiotic stress response.

scholarly journals Genome-wide identification and expression patterns analysis of the RPD3/HDA1 gene family in cotton

BMC Genomics ◽  
2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Jingjing Zhang ◽  
Aimin Wu ◽  
Hengling Wei ◽  
Pengbo Hao ◽  
Qi Zhang ◽  
...  
Keyword(s):  
Gene Family ◽  
Abiotic Stresses ◽  
Expression Patterns ◽  
Histone Deacetylation ◽  
Systematic Research ◽  
Motif Analysis ◽  
Flower Bud ◽  
Early Maturity ◽  
Genome Wide ◽  
Flower Bud Differentiation

Abstract Background Histone deacetylases (HDACs) catalyze histone deacetylation and suppress gene transcription during various cellular processes. Within the superfamily of HDACs, RPD3/HDA1-type HDACs are the most studied, and it is reported that RPD3 genes play crucial roles in plant growth and physiological processes. However, there is a lack of systematic research on the RPD3/HDA1 gene family in cotton. Results In this study, genome-wide analysis identified 9, 9, 18, and 18 RPD3 genes in Gossypium raimondii, G. arboreum, G. hirsutum, and G. barbadense, respectively. This gene family was divided into 4 subfamilies through phylogenetic analysis. The exon-intron structure and conserved motif analysis revealed high conservation in each branch of the cotton RPD3 genes. Collinearity analysis indicated that segmental duplication was the primary driving force during the expansion of the RPD3 gene family in cotton. There was at least one presumed cis-element related to plant hormones in the promoter regions of all GhRPD3 genes, especially MeJA- and ABA-responsive elements, which have more members than other hormone-relevant elements. The expression patterns showed that most GhRPD3 genes had relatively high expression levels in floral organs and performed higher expression in early-maturity cotton compared with late-maturity cotton during flower bud differentiation. In addition, the expression of GhRPD3 genes could be significantly induced by one or more abiotic stresses as well as exogenous application of MeJA or ABA. Conclusions Our findings reveal that GhRPD3 genes may be involved in flower bud differentiation and resistance to abiotic stresses, which provides a basis for further functional verification of GhRPD3 genes in cotton development and a foundation for breeding better early-maturity cotton cultivars in the future.

scholarly journals Genome-wide identification, phylogeny and expression analysis of AP2/ERF transcription factors family in sweet potato

BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Shutao He ◽  
Xiaomeng Hao ◽  
Shuli He ◽  
Xiaoge Hao ◽  
Xiaonan Chen
Keyword(s):  
Transcription Factors ◽  
Abiotic Stress ◽  
Gene Family ◽  
Sweet Potato ◽  
Stress Responses ◽  
Expression Patterns ◽  
Gene Promoters ◽  
Biotic And Abiotic Stress ◽  
Protein Motifs ◽  
Genome Wide

Abstract Background In recent years, much attention has been given to AP2/ERF transcription factors because they play indispensable roles in many biological processes, such as plant development and biotic and abiotic stress responses. Although AP2/ERFs have been thoroughly characterised in many plant species, the knowledge about this family in the sweet potato, which is a vital edible and medicinal crop, is still limited. In this study, a comprehensive genome-wide investigation was conducted to characterise the AP2/ERF gene family in the sweet potato. Results Here, 198 IbAP2/ERF transcription factors were obtained. Phylogenetic analysis classified the members of the IbAP2/ERF family into three groups, namely, ERF (172 members), AP2 (21 members) and RAV (5 members), which was consistent with the analysis of gene structure and conserved protein domains. The evolutionary characteristics of these IbAP2/ERF genes were systematically investigated by analysing chromosome location, conserved protein motifs and gene duplication events, indicating that the expansion of the IbAP2/ERF gene family may have been caused by tandem duplication. Furthermore, the analysis of cis-acting elements in IbAP2/ERF gene promoters implied that these genes may play crucial roles in plant growth, development and stress responses. Additionally, the available RNA-seq data and quantitative real-time PCR (qRT-PCR) were used to investigate the expression patterns of IbAP2/ERF genes during sweet potato root development as well as under multiple forms of abiotic stress, and we identified several developmental stage-specific and stress-responsive IbAP2/ERF genes. Furthermore, g59127 was differentially expressed under various stress conditions and was identified as a nuclear protein, which was in line with predicted subcellular localization results. Conclusions This study originally revealed the characteristics of the IbAP2/ERF superfamily and provides valuable resources for further evolutionary and functional investigations of IbAP2/ERF genes in the sweet potato.

scholarly journals Genome-wide identification and expression patterns analysis of the RPD3/HDA1 gene family in cotton

2019 ◽  
Author(s):  
Jingjing Zhang ◽  
Aimin Wu ◽  
Hengling Wei ◽  
Pengbo Hao ◽  
Qi Zhang ◽  
...  
Keyword(s):  
Gene Family ◽  
Abiotic Stresses ◽  
Expression Patterns ◽  
Histone Deacetylation ◽  
Functional Verification ◽  
Systematic Research ◽  
Flower Bud ◽  
Early Maturity ◽  
Genome Wide ◽  
Flower Bud Differentiation

Abstract Background: Histone deacetylases (HDACs) catalyze histone deacetylation and suppress gene transcription during various cellular processes. As the superfamily of HDACs, RPD3/HDA1-type HDACs were most studied and reported that RPD3 genes played crucial roles in plant growth and physiological processes. However, there is a lack of systematic research on RPD3/HDA1 gene family in cotton. Results: In this research, 9, 9, 18 and 18 RPD3 genes were determined by genome-wide analysis in Gossypium raimondii, G. arboreum, G. hirsutum and G. barbadense, respectively. This gene family was divided into 4 subfamilies through phylogenetic analysis. The exon-intron structure and conserved motifs analysis exhibited high conservation in each branch of cotton RPD3 genes. Collinearity analysis indicated that segmental duplication was the primary driving force during the expansion of the GhRPD3 gene family. There was at least one presumed cis-element related to plant hormone existing in the promoter regions of all the GhRPD3 genes, especially MeJA and ABA responsive elements, owning more members than other hormone-relevant elements. Characterizations of expression patterns showed that most GhRPD3 genes performed relative high expression in floral organs and possessed the higher expression in early-maturity cotton compared with the late-maturity cotton during flower bud differentiation period. In addition, the expression of GhRPD3 genes could be significantly induced by one or more abiotic stresses as well as exogenous application of MeJA and ABA. Conclusions: Our findings revealed that GhRPD3 genes might be involved in flower bud differentiation and resistance to abiotic stresses, which provided a basis for further functional verification of GhRPD3 genes in cotton development and a foundation for breeding better early-maturity cotton cultivars in the future.

scholarly journals Genome-wide identification of the PEBP genes in pears and the putative role of PbFT in flower bud differentiation

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e8928
Author(s):  
Shuliang Zhao ◽  
Yarui Wei ◽  
Hongguang Pang ◽  
Jianfeng Xu ◽  
Yingli Li ◽  
...  
Keyword(s):  
Expression Patterns ◽  
Day Length ◽  
Promoter Regions ◽  
Flower Bud ◽  
Genome Wide ◽  
Flower Bud Differentiation ◽  
Vegetative And Reproductive Growth ◽  
And Function ◽  
Phosphatidylethanolamine Binding Protein

Although Phosphatidylethanolamine-binding protein (PEBP) genes have been identified in several plants, little is known about PEBP genes in pears. In this study, a total of 24 PEBP genes were identified, in which 10, 5 and 9 were from Pyrus bretschneideri genome, Pyrus communis genome and Pyrus betuleafolia genome, respectively. Subsequently, gene structure, phylogenetic relationship, chromosomal localization, promoter regions, collinearity and expression were determined with these PEBP genes. It was found that only PbFT from PEBP genes of P. bretschneideri was relatively highly expressed in leaves during flower bud differentiation. Whereas, expression patterns of TFL1 homologues, gene23124 and gene16540, were different from PbFT in buds. The expression pattern and the treatment of reduction day-length indicated that the expression of PbFT in leaves were regulated by day-length and circadian clock. Additionally, the phenotype of transgenic Arabidopsis suggested that PbFT played a role in not only promoting flower bud differentiation, but also regulating the balance between vegetative and reproductive growth. These results may provide important information for further understanding of the evolution and function of PEBP genes in pears.

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