Genome-wide identification, classification, and expression analysis of TCP transcription factors in carrot

2019 ◽  
Vol 99 (4) ◽  
pp. 525-535
Author(s):  
Kai Feng ◽  
Jian-Nan Hao ◽  
Jie-Xia Liu ◽  
Wei Huang ◽  
Guang-Long Wang ◽  
...  

Carrot (Daucus carota L.) is a crop with rich nutritional value and is one of the most important economical horticulture crops worldwide. The TEOSINTE BRANCHED 1, CYCLOIDEA, PROLIFERATING CELL FACTORS (TCP) transcription factor (TF) family plays important roles in several physiological processes; However, TCP TFs in carrot are rarely reported. In this study, 36 D. carota TCP (DcTCP) TFs were identified from the carrot genome database. On the basis of phylogenetic relationship with TCP TFs in Arabidopsis, the DcTCP family was divided into two classes, namely class I and class II (including CIN and CYC/TB1 subclass). The number of DcTCP TFs in classes I and II were 22 and 14, respectively. Motif analysis and chromosome location of DcTCP TFs were also conducted. All of the DcTCP genes were distributed on nine chromosomes of carrot. The distribution of TCP TFs in different species indicates that the number of TCP TFs is consistent with plant evolution. Quantitative real-time PCR assay was performed to further understand the expression patterns of DcTCP genes during the development of carrot. The expression levels of DcTCP33 and DcTCP36 increased with the germination of carrot seed. The CIN subclass of DcTCPs (DcTCP1, DcTCP4, and DcTCP5) was primarily expressed in leaf blades, whereas the DcTCP26 gene was mainly expressed in roots. These results can provide potentially useful information about TCP TF identification and help explain the roles of TCP TFs in carrots.

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Ruifeng Cui ◽  
Xiaoge Wang ◽  
Waqar Afzal Malik ◽  
Xuke Lu ◽  
Xiugui Chen ◽  
...  

Abstract Background The Raffinose synthetase (RAFS) genes superfamily is critical for the synthesis of raffinose, which accumulates in plant leaves under abiotic stress. However, it remains unclear whether RAFS contributes to resistance to abiotic stress in plants, specifically in the Gossypium species. Results In this study, we identified 74 RAFS genes from G. hirsutum, G. barbadense, G. arboreum and G. raimondii by using a series of bioinformatic methods. Phylogenetic analysis showed that the RAFS gene family in the four Gossypium species could be divided into four major clades; the relatively uniform distribution of the gene number in each species ranged from 12 to 25 based on species ploidy, most likely resulting from an ancient whole-genome polyploidization. Gene motif analysis showed that the RAFS gene structure was relatively conservative. Promoter analysis for cis-regulatory elements showed that some RAFS genes might be regulated by gibberellins and abscisic acid, which might influence their expression levels. Moreover, we further examined the functions of RAFS under cold, heat, salt and drought stress conditions, based on the expression profile and co-expression network of RAFS genes in Gossypium species. Transcriptome analysis suggested that RAFS genes in clade III are highly expressed in organs such as seed, root, cotyledon, ovule and fiber, and under abiotic stress in particular, indicating the involvement of genes belonging to clade III in resistance to abiotic stress. Gene co-expressed network analysis showed that GhRFS2A-GhRFS6A, GhRFS6D, GhRFS7D and GhRFS8A-GhRFS11A were key genes, with high expression levels under salt, drought, cold and heat stress. Conclusion The findings may provide insights into the evolutionary relationships and expression patterns of RAFS genes in Gossypium species and a theoretical basis for the identification of stress resistance materials in cotton.


BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Kewei Cai ◽  
Huixin Liu ◽  
Song Chen ◽  
Yi Liu ◽  
Xiyang Zhao ◽  
...  

Abstract Background Class III peroxidases (POD) proteins are widely present in the plant kingdom that are involved in a broad range of physiological processes including stress responses and lignin polymerization throughout the plant life cycle. At present, POD genes have been studied in Arabidopsis, rice, poplar, maize and Chinese pear, but there are no reports on the identification and function of POD gene family in Betula pendula. Results We identified 90 nonredundant POD genes in Betula pendula. (designated BpPODs). According to phylogenetic relationships, these POD genes were classified into 12 groups. The BpPODs are distributed in different numbers on the 14 chromosomes, and some BpPODs were located sequentially in tandem on chromosomes. In addition, we analyzed the conserved domains of BpPOD proteins and found that they contain highly conserved motifs. We also investigated their expression patterns in different tissues, the results showed that some BpPODs might play an important role in xylem, leaf, root and flower. Furthermore, under low temperature conditions, some BpPODs showed different expression patterns at different times. Conclusions The research on the structure and function of the POD genes in Betula pendula plays a very important role in understanding the growth and development process and the molecular mechanism of stress resistance. These results lay the theoretical foundation for the genetic improvement of Betula pendula.


2019 ◽  
Vol 20 (6) ◽  
pp. 1425 ◽  
Author(s):  
Dongli Wang ◽  
Sen Meng ◽  
Wanlong Su ◽  
Yu Bao ◽  
Yingying Lu ◽  
...  

Poplar (Populus) is one of the most important woody plants worldwide. Drought, a primary abiotic stress, seriously affects poplar growth and development. Multiple organellar RNA editing factor (MORF) genes—pivotal factors in the RNA editosome in Arabidopsis thaliana—are indispensable for the regulation of various physiological processes, including organelle C-to-U RNA editing and plasmid development, as well as in the response to stresses. Although the poplar genome sequence has been released, little is known about MORF genes in poplar, especially those involved in the response to drought stress at the genome-wide level. In this study, we identified nine MORF genes in the Populus genome. Based on the structural features of MORF proteins and the topology of the phylogenetic tree, the P. trichocarpa (Ptr) MORF family members were classified into six groups (Groups I–VI). A microsynteny analysis indicated that two (22.2%) PtrMORF genes were tandemly duplicated and seven genes (77.8%) were segmentally duplicated. Based on the dN/dS ratios, purifying selection likely played a major role in the evolution of this family and contributed to functional divergence among PtrMORF genes. Moreover, analysis of qRT-PCR data revealed that PtrMORFs exhibited tissue- and treatment-specific expression patterns. PtrMORF genes in all group were involved in the stress response. These results provide a solid foundation for further analyses of the functions and molecular evolution of MORF genes in poplar, and, in particular, for improving the drought resistance of poplar by genetics manipulation.


2020 ◽  
Author(s):  
Kewei Cai ◽  
Song Chen ◽  
Xiyang Zhao ◽  
Su Chen

Abstract Background: Class III peroxidases (POD) proteins are widely present in the plant kingdom that are involved in a broad range of physiological processes including stress responses and lignin polymerization throughout the plant life cycle. However, little is known about the POD genes in Betula pendula, although it has been characterized in Arabidopsis, rice and maize. The POD genes remain to be determined in Betula pendula.Results: A total of 90 nonredundant POD genes were identified in Betula pendula. (designated BpPODs). These POD genes were divided into twelve groups based on their phylogenetic relationships. The BpPODs are unevenly distributed on the 14 chromosomes. In addition, some BpPOD genes were located sequentially in tandem on chromosomes, inferred that tandem duplication contributes to the expansion of the POD genes family in Betula pendula. Analysis of the distribution of conserved domains of BpPOD proteins showed that all these proteins contain highly conserved motifs. We also investigated their expression patterns in different tissues, the results show that some BpPOD genes might play significant roles in root, xylem, leaf and flower. Furthermore, under low temperature conditions, some BpPOD genes showed different expression patterns at different times.Conclusions: Comprehensive study of the POD genes suggests that their functional diversity during Betula pendula growth and development. Our findings provide a basis for further functional analysis on POD genes family in Betula pendula.


Plants ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 1301
Author(s):  
Meiling Zhao ◽  
Xianjun Peng ◽  
Naizhi Chen ◽  
Shihua Shen

The plant-specific TCP family proteins play an important role in the processes of plant growth and development. Broussonetia papyrifera is a versatile perennial deciduous tree, and its genome data have been published. However, no comprehensive analysis of the TCP gene family in B. papyrifera has been undertaken. In this study, 20 BpTCP genes (BpTCPs) were identified in the B. papyrifera genome. Phylogenetic analysis divided BpTCPs into three subclades, the PCF subclade, the CIN subclade and the CYC/TB1 subclade. Gene structure analysis displayed that all BpTCPs except BpTCP19 contained one coding region. Conserved motif analysis showed that BpTCP proteins in the same subclade possessed similar motif structures. Segmental duplication was the primary driving force for the expansion of BpTCPs. Expression patterns showed that BpTCPs may play diverse biological functions in organ or tissue development. Transcriptional activation activity analysis of BpTCP8, BpTCP14 and BpTCP19 showed that they possessed transcriptional activation ability. The ectopic expression analysis in Arabidopsis wild-type and AtBRC1 ortholog mutant showed that BpTCP8, BpTCP14 and BpTCP19 could prevent rosette branch outgrowth. Collectively, our study not only established the first genome-wide analysis of the B. papyrifera TCP gene family, but also provided valuable information for understanding the function of BpTCPs in shoot branching.


Agronomy ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1634
Author(s):  
Xin Hao ◽  
Shuyao Wang ◽  
Yingying Chen ◽  
Yue Qu ◽  
Hongjun Yao ◽  
...  

The WRKY family of transcription factors plays important roles in plant growth and responses to biotic and abiotic stresses. Ammopiptanthus nanus, the only evergreen broadleaf shrub endemic to the desert and semi-desert regions of northwestern China, is highly tolerant to various stresses. However, a systematic study of WRKY proteins in A. nanus has not been reported. In the present study, we identified 63 WRKY genes in the A. nanus genome. Based on the conserved WRKY domains, zinc finger structures, and phylogenetic relationships in their encoded proteins, we classified these genes into four groups (group I–IV) and several subgroups (subgroup IIa–IIe). Conserved motif analysis showed that all motifs except those within the WRKY domains had a subfamily-specific distribution. Expression analysis revealed that the AnWRKY genes had distinct expression patterns, with some being more responsive to herbivory and drought stresses than others. Based on the results of our current study, we speculate that AnWRKY40 and AnWRKY48 are positive regulators of the plant’s response to drought and herbivory stresses, respectively. Our results indicate that AnWRKY genes contribute to the ability of A. nanus plants to withstand harsh, dry conditions.


Genes ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 427
Author(s):  
Yunting Zhang ◽  
Yuyun Ye ◽  
Leiyu Jiang ◽  
Yuanxiu Lin ◽  
Xianjie Gu ◽  
...  

The plant sucrose nonfermenting 1 (SNF1)-related protein kinases (SnRKs) are key regulators in the interconnection of various signaling pathways. However, little is known about the SnRK family in strawberries. In this study, a total of 26 FvSnRKs including one FvSnRK1, nine FvSnRK2s and 16 FvSnRK3s were identified from the strawberry genome database. They were respectively designated as FvSnRK1.1, FvSnRK2.1 to FvSnRK2.9 and FvSnRK3.1 to FvSnRK3.16, according to the conserved domain of each subfamily and multiple sequence alignment with Arabidopsis. FvSnRK family members were unevenly distributed in seven chromosomes. The number of exons or introns varied among FvSnRK1s, FvSnRK2s and FvSnRK3s, but highly conserved in the same subfamily. The FvSnRK1.1 had 10 exons. Most of FvSnRK2s had nine exons or eight introns, except FvSnRK2.4, FvSnRK2.8 and FvSnRK2.9. FvSnRK3 genes were divided into intron-free and intron-harboring members, and the number of introns in intron-harboring group ranged from 11 to 15. Moreover, the phylogenetic analysis showed SnRK1, SnRK2 and SnRK3 subfamilies respectively clustered together in spite of the different species of strawberry and Arabidopsis, indicating the genes were established prior to the divergence of the corresponding taxonomic lineages. Meanwhile, conserved motif analysis showed that FvSnRK sequences that belonged to the same subgroup contained their own specific motifs. Cis-element in promoter and expression pattern analyses of FvSnRK1.1 suggested that FvSnRK1.1 was involved in cold responsiveness, light responsiveness and fruit ripening. Taken together, this comprehensive analysis will facilitate further studies of the FvSnRK family and provide a basis for the understanding of their function in strawberry.


2020 ◽  
Author(s):  
Hongyan Shen ◽  
Qiuping Tan ◽  
Wei Xiao ◽  
Wenpeng Deng ◽  
Xiaoyan Yu ◽  
...  

Abstract Background: Xyloglucan endotransglucosylase/hydrolases (XTHs) are a class of cell wall-associated enzymes involved in the construction and remodeling of cellulose/xyloglucan crosslinks. However, knowledge of this gene family in the model monocot Brachypodium distachyon is limited. Results: A total of 29 BdXTH genes were identified from the reference genome, and these were further divided into three main groups (Group I/II, Group III, and the Ancestral Group) through comparative phylogenetic analysis. Gene structure and protein motif analysis indicate that closely clustered BdXTH genes are relatively conserved within each group. A highly conserved amino acid domain (DEIDFEFLG) responsible for catalytic activity was identified in all BdXTH proteins. We detected three pairs of segmentally duplicated BdXTH genes and five groups of tandemly duplicated BdXTH genes, which have played important roles in the expansion of the BdXTH gene family. Cis -elements related to hormones, growth, and abiotic stress responses were identified in the promoters of each BdXTH gene. Most BdXTH genes have distinct expression patterns in different tissues and growth stages. Furthermore, when roots were treated with two abiotic stresses (salinity and drought) and four plant hormones (IAA, auxin; GA3, gibberellin; ABA, abscisic acid and BR, brassinolide), the expression levels of many BdXTH genes changed significantly, suggesting possible roles in response to various environmental stimuli and plant hormones. Conclusion: In this study, we performed genome-wide identification, characterization, and expression pattern analysis of the XTH gene family in Brachypodium, which provide valuable information for further elucidation of the biological functions of BdXTH genes in the model grass B. distachyon.


BMC Genomics ◽  
2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Jingjing Zhang ◽  
Aimin Wu ◽  
Hengling Wei ◽  
Pengbo Hao ◽  
Qi Zhang ◽  
...  

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.


2019 ◽  
Vol 20 (20) ◽  
pp. 4973
Author(s):  
Jixing Xia ◽  
Haifeng Xu ◽  
Zezhong Yang ◽  
Huipeng Pan ◽  
Xin Yang ◽  
...  

The whitefly (Bemisia tabaci), an important invasive pest that causes severe damage to crops worldwide, has developed resistance to a variety of insecticides. Carboxylesterases (COEs) are important multifunctional enzymes involved in the growth, development, and xenobiotic metabolism of insects. However, systematic studies on the COEs of B. tabaci are scarce. Here, 42 putative COEs in different functional categories were identified in the Mediterranean species of B. tabaci (B. tabaci MED) based on a genome database and neighbor-joining phylogeny. The expression patterns of the COEs were affected by the development of B. tabaci. The expression levels of six COEs were positively correlated with the concentration of imidacloprid to which B. tabaci adults were exposed. The mortality of B. tabaci MED adults fed dsBTbe5 (67.5%) and dsBTjhe2 (58.4%) was significantly higher than the adults fed dsEGFP (41.1%) when treated with imidacloprid. Our results provide a basis for functional research on COEs in B. tabaci and provide new insight into the imidacloprid resistance of B. tabaci.


Sign in / Sign up

Export Citation Format

Share Document