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Liao TJ, Huang T, Xiong HY, Duo JC, Ma JZ, Du MY, Duan RJ. Genome-wide identification, characterization, and evolutionary analysis of the barley TALE gene family and its expression profiles in response to exogenous hormones. FRONTIERS IN PLANT SCIENCE 2024; 15:1421702. [PMID: 38993938 PMCID: PMC11236544 DOI: 10.3389/fpls.2024.1421702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Accepted: 06/07/2024] [Indexed: 07/13/2024]
Abstract
Three-amino-loop-extension (TALE) family belongs to the homeobox gene superfamily and occurs widely in plants, playing a crucial role in regulating their growth and development. Currently, genome-wide analysis of the TALE family has been completed in many plants. However, the systematic identification and hormone response analysis of the TALE gene family in barley are still lacking. In this study, 21 TALE candidate genes were identified in barley, which can be divided into KNOX and BELL subfamilies. Barley TALE members in the same subfamily of the phylogenetic tree have analogically conserved motifs and gene structures, and segmental duplications are largely responsible for the expansion of the HvTALE family. Analysis of TALE orthologous and homologous gene pairs indicated that the HvTALE family has mainly undergone purifying selective pressure. Through spatial structure simulation, HvKNOX5-HvKNOX6 and HvKNOX5-HvBELL11 complexes are all formed through hydrogen bonding sites on both the KNOX2 and homeodomain (HD) domains of HvKNOX5, which may be essential for protein interactions among the HvTALE family members. Expression pattern analyses reveal the potential involvement of most HvTALE genes in responses to exogenous hormones. These results will lay the foundation for regulation and function analyses of the barley TALE gene family in plant growth and development by hormone regulation.
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Affiliation(s)
- Tian-jiang Liao
- College of Eco-environmental Engineering, Qinghai University, Xining, Qinghai, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai, China
| | - Tao Huang
- College of Eco-environmental Engineering, Qinghai University, Xining, Qinghai, China
| | - Hui-yan Xiong
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai, China
| | - Jie-cuo Duo
- College of Eco-environmental Engineering, Qinghai University, Xining, Qinghai, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai, China
| | - Jian-zhi Ma
- College of Eco-environmental Engineering, Qinghai University, Xining, Qinghai, China
| | - Ming-yang Du
- College of Eco-environmental Engineering, Qinghai University, Xining, Qinghai, China
| | - Rui-jun Duan
- College of Eco-environmental Engineering, Qinghai University, Xining, Qinghai, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai, China
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Neves C, Ribeiro B, Amaro R, Expósito J, Grimplet J, Fortes AM. Network of GRAS transcription factors in plant development, fruit ripening and stress responses. HORTICULTURE RESEARCH 2023; 10:uhad220. [PMID: 38077496 PMCID: PMC10699852 DOI: 10.1093/hr/uhad220] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 10/20/2023] [Indexed: 06/23/2024]
Abstract
The plant-specific family of GRAS transcription factors has been wide implicated in the regulation of transcriptional reprogramming associated with a diversity of biological functions ranging from plant development processes to stress responses. Functional analyses of GRAS transcription factors supported by in silico structural and comparative analyses are emerging and clarifying the regulatory networks associated with their biological roles. In this review, a detailed analysis of GRAS proteins' structure and biochemical features as revealed by recent discoveries indicated how these characteristics may impact subcellular location, molecular mechanisms, and function. Nomenclature issues associated with GRAS classification into different subfamilies in diverse plant species even in the presence of robust genomic resources are discussed, in particular how it affects assumptions of biological function. Insights into the mechanisms driving evolution of this gene family and how genetic and epigenetic regulation of GRAS contributes to subfunctionalization are provided. Finally, this review debates challenges and future perspectives on the application of this complex but promising gene family for crop improvement to cope with challenges of environmental transition.
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Affiliation(s)
- Catarina Neves
- BioISI–Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Campo Grande, 1749-016 Lisboa, Portugal
| | - Beatriz Ribeiro
- BioISI–Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Campo Grande, 1749-016 Lisboa, Portugal
| | - Rute Amaro
- BioISI–Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Campo Grande, 1749-016 Lisboa, Portugal
| | - Jesús Expósito
- BioISI–Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Campo Grande, 1749-016 Lisboa, Portugal
| | - Jérôme Grimplet
- Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), Departamento de Ciencia Vegetal, Gobierno de Aragón, Avda. Montañana 930, 50059 Zaragoza, Spain
- Instituto Agroalimentario de Aragón—IA2 (CITA-Universidad de Zaragoza), Calle Miguel Servet 177, 50013 Zaragoza, Spain
| | - Ana Margarida Fortes
- BioISI–Biosystems and Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Campo Grande, 1749-016 Lisboa, Portugal
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Balbhim SS, Sarkar S, Vasudevan M, Ghosh SK. Three-amino acid loop extension homeodomain proteins regulate stress responses and encystation in Entamoeba. Mol Microbiol 2023. [PMID: 37424153 DOI: 10.1111/mmi.15121] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 06/22/2023] [Accepted: 06/26/2023] [Indexed: 07/11/2023]
Abstract
It is interesting to identify factors involved in the regulation of the encystation of Entamoeba histolytica that differentiate trophozoites into cysts. Evolutionarily conserved three amino acid loop extension (TALE) homeodomain proteins act as transcription factors and execute a variety of functions that are essential for life. A TALE homeodomain (EhHbox) protein-encoding gene has been identified in E. histolytica (Eh) that is highly upregulated during heat shock, glucose, and serum starvation. Its ortholog, EiHbox1, a putative homeobox protein in E. invadens (Ei), is also highly upregulated during the early hours of encystation, glucose starvation, and heat shock. They belong to the PBX family of TALE homeobox proteins and have conserved residues in the homeodomain that are essential for DNA binding. Both are localized in the nucleus during encystation and under different stress conditions. The electrophoretic mobility shift assay confirmed that the recombinant GST-EhHbox binds to the reported TGACAG and TGATTGAT motifs. Down-regulation of EiHbox1 by gene silencing reduced Chitin synthase, Jacob, and increased Jessie gene expression, resulting in defective cysts and decreased encystation efficiency and viability. Overall, our results suggest that the TALE homeobox family has been conserved during evolution and acts as a transcription factor to control the differentiation of Entamoeba by regulating the key encystation-induced genes.
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Affiliation(s)
- Sonar Shubham Balbhim
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Shilpa Sarkar
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | | | - Sudip K Ghosh
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, India
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Jia Y, Li Y. Genome-Wide Identification and Comparative Analysis of RALF Gene Family in Legume and Non-Legume Species. Int J Mol Sci 2023; 24:ijms24108842. [PMID: 37240187 DOI: 10.3390/ijms24108842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/05/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Rapid alkalinization factor (RALF) are small secreted peptide hormones that can induce rapid alkalinization in a medium. They act as signaling molecules in plants, playing a critical role in plant development and growth, especially in plant immunity. Although the function of RALF peptides has been comprehensively analyzed, the evolutionary mechanism of RALFs in symbiosis has not been studied. In this study, 41, 24, 17 and 12 RALFs were identified in Arabidopsis, soybean, Lotus and Medicago, respectively. A comparative analysis including the molecular characteristics and conserved motifs suggested that the RALF pre-peptides in soybean represented a higher value of isoelectric point and more conservative motifs/residues composition than other species. All 94 RALFs were divided into two clades according to the phylogenetic analysis. Chromosome distribution and synteny analysis suggested that the expansion of the RALF gene family in Arabidopsis mainly depended on tandem duplication, while segment duplication played a dominant role in legume species. The expression levels of most RALFs in soybean were significantly affected by the treatment of rhizobia. Seven GmRALFs are potentially involved in the release of rhizobia in the cortex cells. Overall, our research provides novel insights into the understanding of the role of the RALF gene family in nodule symbiosis.
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Affiliation(s)
- Yancui Jia
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, No. 1 Shizishan Road, Hongshan District, Wuhan 430070, China
| | - Youguo Li
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, No. 1 Shizishan Road, Hongshan District, Wuhan 430070, China
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Bai Y, Shi T, Huang X, Zhou P, Ouma KO, Ni Z, Gao F, Tan W, Ma C, Ma Y, Gao Z. Genome-Wide Identification of the KNOX Gene Family in Japanese Apricot ( Prunus mume Sieb. et Zucc.) and Functional Characterization of PmKNAT2 Genes. Genes (Basel) 2023; 14:genes14040939. [PMID: 37107697 PMCID: PMC10138190 DOI: 10.3390/genes14040939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/10/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
The Knotted1-like Homeobox gene is crucial for plant morphological development and growth. Physicochemical characteristics, phylogenetic relationships, chromosomal localization, cis-acting elements, and tissue-specific expression patterns of the 11 PmKNOX genes found in the Japanese apricot genome in this study were examined. Proteins of 11 PmKNOX were soluble proteins with isoelectric points between 4.29 and 6.53, molecular masses between 15.732 and 44.011 kDa, and amino acid counts between 140 and 430. The identified PmKNOX gene family was split into three subfamilies by jointly constructing the phylogenetic tree of KNOX proteins in Japanese apricot and Arabidopsis thaliana. Combined outcomes of the analyzed conserved motifs and gene structures of the 11 PmKNOX genes from the same subfamily displayed comparable gene structure and motif patterns. The 11 PmKNOX members were distributed across six chromosomes, while two sets of PmKNOX genes were found to be collinear. Analysis of the 2000 bp promoter upstream of the coding region of the PmKNOX gene revealed that most PmKNOX genes might be involved in the physiological metabolism, growth and development processes of plants. The PmKNOX gene expression profile revealed that these genes were expressed at varying levels in different tissues, and most of them were linked to the meristems of leaf and flower buds, suggesting that PmKNOX may be involved in plants' apical meristems. In Arabidopsis thaliana, functional validation of PmKNAT2a and PmKNAT2b revealed that these two genes might be involved in regulating leaf and stem development. In addition to laying the groundwork for future research on the function of these genes, understanding the evolutionary relationships between members of the PmKNOX gene family provides opportunities for future breeding in Japanese apricots.
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Affiliation(s)
- Yang Bai
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Ting Shi
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiao Huang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Pengyu Zhou
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Kenneth Omondi Ouma
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhaojun Ni
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Feng Gao
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Wei Tan
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Chengdong Ma
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Yufan Ma
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhihong Gao
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
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Yang Q, Yuan C, Cong T, Wang J, Zhang Q. Genome-wide identification of three-amino-acid-loop-extension gene family and their expression profile under hormone and abiotic stress treatments during stem development of Prunus mume. FRONTIERS IN PLANT SCIENCE 2022; 13:1006360. [PMID: 36212383 PMCID: PMC9538144 DOI: 10.3389/fpls.2022.1006360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 08/24/2022] [Indexed: 06/16/2023]
Abstract
Transcription factors encoded by the three-amino-acid-loop-extension (TALE) gene family play a key role in regulating plant growth and development, and are involved in plant hormone regulatory pathways and responses to various environmental stresses. Researchers are currently studying TALE genes in different species, but Prunus mume TALE genes have not yet been studied. Therefore, based on the P. mume genome, we found a total of 23 TALE gene family members, which were distributed on eight chromosomes. TALE genes contained the characteristic domains of this family, and could be divided into KNOTTED-like homeobox (KNOX) subfamily and BEL1-like homeobox (BELL) subfamily. They can form heterodimers with each other. Fragment duplication and tandem duplication events were the main reasons for the expansion of P. mume TALE gene family members and the TALE genes were selected by different degrees of purification. The inter-species collinearity analysis showed that the relationship between P. mume and other four Prunus species was consistent with the distance of origin. Eleven members of P. mume TALE genes were specifically highly expressed in stem, mainly at the early stage of stem development. The cis-element analysis showed that the promoter of P. mume TALE genes contained a variety of hormone and abiotic stress response elements, and four TALE genes responded to two kinds of abiotic stresses and four kinds of hormones at the early stage of stem development. In conclusion, this study lays a foundation to explore the role of TALE gene family in P. mume growth and development.
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Ezura K, Nakamura A, Mitsuda N. Genome-wide characterization of the TALE homeodomain family and the KNOX-BLH interaction network in tomato. PLANT MOLECULAR BIOLOGY 2022; 109:799-821. [PMID: 35543849 DOI: 10.1007/s11103-022-01277-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 04/23/2022] [Indexed: 05/05/2023]
Abstract
Comprehensive yeast and protoplast two-hybrid analyses illustrated the protein-protein interaction network of the TALE homeodomain protein family, KNOX and BLH proteins, in tomato leaf and fruit development. KNOTTED-like (KNOX, KN) proteins and BELL1-like (BLH) proteins, which belong to the same TALE homeodomain family, act together by forming KNOX-BLH heterodimer modules. These modules play crucial roles in regulating multiple developmental processes in plants, like organ differentiation. However, despite the increasing knowledge about individual KNOX and BLH functions, a comprehensive view of their functional protein-protein interaction (PPI) network remains elusive in most plants, including tomato (Solanum lycopersicum), an important model plant to study fruit and leaf development. Here, we characterized eight tomato KNOX genes (SlKN1 to SlKN8) and fourteen tomato BLH genes (SlBLH1 to SlBLH14) by expression profiling, co-expression analysis, and PPI network analysis using two-hybrid techniques in yeasts (Y2H) and protoplasts (P2H). We identified 75 pairwise KNOX-BLH interactions, including ten novel interactors of SlKN2/TKN2, a primary class I KNOX protein, and nine novel interactors of SlKN5, a primary class II KNOX protein. Based on these data, we classified KNOX-BLH modules into several categories, which made us infer the order and combination of the KNOX-BLH modules involved in differentiation processes in leaf and fruit. Notably, the co-expression and interaction of SlKN5 and fruit preferentially expressing BLH1-clade paralogs (SlBLH5/SlBEL11 and SlBLH7) suggest their important roles in regulating fruit differentiation. Furthermore, in silico modeling of the KNOX-BLH modules, sequence analysis, and P2H assay identified several residues and a linker region potentially influencing the affinity of BLHs to KNOXs within their conserved dimerization domains. Together, these findings provide insights into the regulatory mechanism of KNOX-BLH modules underlying tomato organ differentiation.
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Affiliation(s)
- Kentaro Ezura
- Japan Society for the Promotion of Science, Tokyo, Japan.
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, 305-8566, Japan.
| | - Akiyoshi Nakamura
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, 305-8566, Japan
| | - Nobutaka Mitsuda
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, 305-8566, Japan
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8
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He Y, Yang T, Yan S, Niu S, Zhang Y. Identification and characterization of the BEL1-like genes reveal their potential roles in plant growth and abiotic stress response in tomato. Int J Biol Macromol 2022; 200:193-205. [PMID: 34995657 DOI: 10.1016/j.ijbiomac.2021.12.175] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 12/27/2021] [Accepted: 12/27/2021] [Indexed: 11/05/2022]
Abstract
BEL1-like (BELL) transcription factors, belonging to three-amino acid-loop-extension (TALE) superfamily, are ubiquitous in plants. BELLs regulate a wide range of plant biological processes, but the understanding of the BELL family in tomato (Solanum lycopersicum) remains fragmentary. In this study, a total of 14 members of the SlBELL family were identified in tomato. SlBELL proteins contained the conserved BELL and SKY domains that served as typical structures of the BELL family. Syntenic analysis indicated that the BELL orthologs between tomato and other dicots had close evolutionary relationships. Furthermore, the promoters of SlBELLs contained numerous cis-elements related to plant growth, development, and stress response. The SlBELL genes exhibited different tissue-specific expression profiles and responded to cold, heat, and drought stresses, implying their potential functions in regulating multiple aspects of plant growth, as well as in response to abiotic stresses. Through the interaction network prediction, we found that most SlBELL proteins displayed probable interactions with the KNOTTED1-like (KNOX) proteins, another kind of transcription factor in the TALE superfamily. These findings laid foundations for further dissection of the functions of SlBELL genes in tomato, as well as for exploration of the evolutionary relationships of BELL homologs among different plant species.
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Affiliation(s)
- Yu He
- College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Shaanxi Engineering Research Center for Vegetables, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Tongwen Yang
- College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Shaanxi Engineering Research Center for Vegetables, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Siwei Yan
- College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Shaanxi Engineering Research Center for Vegetables, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Shaobo Niu
- College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Shaanxi Engineering Research Center for Vegetables, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Yan Zhang
- College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Shaanxi Engineering Research Center for Vegetables, Northwest A&F University, Yangling 712100, Shaanxi, PR China.
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Rathour M, Shumayla, Alok A, Upadhyay SK. Investigation of Roles of TaTALE Genes during Development and Stress Response in Bread Wheat. PLANTS (BASEL, SWITZERLAND) 2022; 11:587. [PMID: 35270056 PMCID: PMC8912380 DOI: 10.3390/plants11050587] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 08/27/2023]
Abstract
The three amino acid loop extension (TALE) genes of the homeobox superfamily are responsible for numerous biological functions in plants. Herein, we identified a total of 72 TaTALE genes in the allohexaploid genome of bread wheat (Triticum aestivum L.) and performed a comprehensive investigation for gene and protein structural properties, phylogeny, expression patterns, and multilevel gene regulations. The identified TaTALE proteins were further classified into two groups, TaBLHs and TaKNOXs, which were tightly clustered into the phylogeny. The negative Ka/Ks ratio of duplicated genes suggested purifying selection pressure with confined functional divergence. Various signature domains and motifs were found conserved in both groups of proteins. The occurrence of diverse cis-regulatory elements and modulated expression during various developmental stages and in the presence of abiotic (heat, drought, salt) and two different fungal stresses suggested their roles in development and stress response, as well. The interaction of TaTALEs with the miRNAs and other development-related homeobox proteins also suggested their roles in growth and development and stress response. The present study revealed several important aspects of TaTALEs that will be useful in further functional validation of these genes in future studies.
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Affiliation(s)
- Meenakshi Rathour
- Department of Botany, Panjab University, Chandigarh 160014, India; (M.R.); (S.)
| | - Shumayla
- Department of Botany, Panjab University, Chandigarh 160014, India; (M.R.); (S.)
| | - Anshu Alok
- Department of Plant Pathology, University of Minnesota, Twin Cities, Saint Paul, MN 55108, USA;
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Han Y, Zhang L, Yan L, Xiong X, Wang W, Zhang XH, Min DH. Genome-wide analysis of TALE superfamily in Triticum aestivum reveals TaKNOX11-A is involved in abiotic stress response. BMC Genomics 2022; 23:89. [PMID: 35100988 PMCID: PMC8805372 DOI: 10.1186/s12864-022-08324-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 01/17/2022] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Three-amino-loop-extension (TALE) superfamily genes are widely present in plants and function directly in plant growth and development and abiotic stress response. Although TALE genes have been studied in many plant species, members of the TALE family have not been identified in wheat. RESULTS In this study, we identified 70 wheat TALE protein candidate genes divided into two subfamilies, KNOX (KNOTTED-like homeodomain) and BEL1-like (BLH/BELL homeodomain). Genes in the same subfamily or branch in the phylogenetic tree are similar in structure, and their encoded proteins have similar motifs and conserved structures. Wheat TALE genes are unevenly distributed on 21 chromosomes and expanded on the fourth chromosome. Through gene duplication analysis, 53 pairs of wheat TALE genes were determined to result from segmental duplication events, and five pairs were caused by tandem duplication events. The Ka/Ks between TALE gene pairs indicates a strong purification and selection effect. There are multiple cis-elements in the 2000 bp promoter sequence that respond to hormones and abiotic stress, indicating that most wheat TALE genes are involved in the growth, development, and stress response of wheat. We also studied the expression profiles of wheat TALE genes in different developmental stages and tissues and under different stress treatments. We detected the expression levels of four TALE genes by qRT-PCR, and selected TaKNOX11-A for further downstream analysis. TaKNOX11-A enhanced the drought and salt tolerances of Arabidopsis thaliana. TaKNOX11-A overexpressing plants had decreased malondialdehyde content and increased proline content, allowing for more effective adaptation of plants to unfavorable environments. CONCLUSIONS We identified TALE superfamily members in wheat and conducted a comprehensive bioinformatics analysis. The discovery of the potential role of TaKNOX11-A in drought resistance and salt tolerance provides a basis for follow-up studies of wheat TALE family members, and also provides new genetic resources for improving the stress resistance of wheat.
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Affiliation(s)
- Yuxuan Han
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Yangling, Shaanxi, China
| | - Lili Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Yangling, Shaanxi, China
| | - Luyu Yan
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Xinxin Xiong
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Yangling, Shaanxi, China
| | - Wenjing Wang
- Shaanxi Agricultural Machinery Appraisal and Extension Station, Xian, Shaanxi, China
| | - Xiao-Hong Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China.
| | - Dong-Hong Min
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Agronomy, Northwest A&F University, Yangling, Shaanxi, China.
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Peng W, Yang Y, Xu J, Peng E, Dai S, Dai L, Wang Y, Yi T, Wang B, Li D, Song N. TALE Transcription Factors in Sweet Orange ( Citrus sinensis): Genome-Wide Identification, Characterization, and Expression in Response to Biotic and Abiotic Stresses. FRONTIERS IN PLANT SCIENCE 2022; 12:814252. [PMID: 35126435 PMCID: PMC8811264 DOI: 10.3389/fpls.2021.814252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
Three-amino-acid-loop-extension (TALE) transcription factors comprise one of the largest gene families in plants, in which they contribute to regulation of a wide variety of biological processes, including plant growth and development, as well as governing stress responses. Although sweet orange (Citrus sinensis) is among the most commercially important fruit crops cultivated worldwide, there have been relatively few functional studies on TALE genes in this species. In this study, we investigated 18 CsTALE gene family members with respect to their phylogeny, physicochemical properties, conserved motif/domain sequences, gene structures, chromosomal location, cis-acting regulatory elements, and protein-protein interactions (PPIs). These CsTALE genes were classified into two subfamilies based on sequence homology and phylogenetic analyses, and the classification was equally strongly supported by the highly conserved gene structures and motif/domain compositions. CsTALEs were found to be unevenly distributed on the chromosomes, and duplication analysis revealed that segmental duplication and purifying selection have been major driving force in the evolution of these genes. Expression profile analysis indicated that CsTALE genes exhibit a discernible spatial expression pattern in different tissues and differing expression patterns in response to different biotic/abiotic stresses. Of the 18 CsTALE genes examined, 10 were found to be responsive to high temperature, four to low temperature, eight to salt, and four to wounding. Moreover, the expression of CsTALE3/8/12/16 was induced in response to infection with the fungal pathogen Diaporthe citri and bacterial pathogen Candidatus Liberibacter asiaticus, whereas the expression of CsTALE15/17 was strongly suppressed. The transcriptional activity of CsTALE proteins was also verified in yeast, with yeast two-hybrid assays indicating that CsTALE3/CsTALE8, CsTALE3/CsTALE11, CsTALE10/CsTALE12, CsTALE14/CsTALE8, CsTALE14/CsTALE11 can form respective heterodimers. The findings of this study could lay the foundations for elucidating the biological functions of the TALE family genes in sweet orange and contribute to the breeding of stress-tolerant plants.
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Affiliation(s)
- Weiye Peng
- College of Plant Protection, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, China
| | - Yang Yang
- College of Plant Protection, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, China
| | - Jing Xu
- College of Plant Protection, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, China
| | - Erping Peng
- College of Plant Protection, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, China
| | - Suming Dai
- Horticulture College, Hunan Agricultural University, Changsha, China
- National Center for Citrus Improvement Changsha, Changsha, China
| | - Liangying Dai
- College of Plant Protection, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, China
| | - Yunsheng Wang
- College of Plant Protection, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, China
| | - Tuyong Yi
- College of Plant Protection, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, China
| | - Bing Wang
- College of Plant Protection, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, China
| | - Dazhi Li
- Horticulture College, Hunan Agricultural University, Changsha, China
- National Center for Citrus Improvement Changsha, Changsha, China
| | - Na Song
- College of Plant Protection, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, China
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Zhang X, Zhao J, Wu X, Hu G, Fan S, Ma Q. Evolutionary Relationships and Divergence of KNOTTED1-Like Family Genes Involved in Salt Tolerance and Development in Cotton ( Gossypium hirsutum L.). FRONTIERS IN PLANT SCIENCE 2021; 12:774161. [PMID: 34970288 PMCID: PMC8712452 DOI: 10.3389/fpls.2021.774161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 11/25/2021] [Indexed: 05/16/2023]
Abstract
The KNOX (KNOTTED1-like homeobox) transcription factors play an important role in leaf, shoot apical meristem and seed development and respond to biotic and abiotic stresses. In this study, we analyzed the diversity and evolutionary history of the KNOX gene family in the genome of tetraploid cotton (Gossypium hirsutum). Forty-four putative KNOX genes were identified. All KNOX genes from seven higher plant species were classified into KNOXI, KNOXII, and KNATM clades based on a phylogenetic analysis. Chromosomal localization and collinearity analysis suggested that whole-genome duplication and a polyploidization event contributed to the expansion of the cotton KNOX gene family. Analyses of expression profiles revealed that the GhKNOX genes likely responded to diverse stresses and were involved in cotton growth developmental processes. Silencing of GhKNOX2 enhanced the salt tolerance of cotton seedlings, whereas silencing of GhKNOX10 and GhKNOX14 reduced seedling tolerance to salt stress. Silencing of GhSTM3 influenced the cotton flowering time and plant development. These findings clarify the evolution of the cotton KNOX gene family and provide a foundation for future functional studies of KNOX proteins in cotton growth and development and response to abiotic stresses.
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Affiliation(s)
- Xiaohong Zhang
- Collaborative Innovation Center of Modern Biological Breeding, Henan Institute of Science and Technology, Xinxiang, China
| | - Junjie Zhao
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, China
| | - Xiangyuan Wu
- Collaborative Innovation Center of Modern Biological Breeding, Henan Institute of Science and Technology, Xinxiang, China
| | - Genhai Hu
- Collaborative Innovation Center of Modern Biological Breeding, Henan Institute of Science and Technology, Xinxiang, China
| | - Shuli Fan
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, China
- *Correspondence: Shuli Fan,
| | - Qifeng Ma
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang, China
- Qifeng Ma,
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