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Yang R, Li K, Wang M, Sun M, Li Q, Chen L, Xiao F, Zhang Z, Zhang H, Jiao F, Chen J. ZmNAC17 Regulates Mesocotyl Elongation by Mediating Auxin and ROS Biosynthetic Pathways in Maize. Int J Mol Sci 2024; 25:4585. [PMID: 38731804 PMCID: PMC11083593 DOI: 10.3390/ijms25094585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/16/2024] [Accepted: 04/19/2024] [Indexed: 05/13/2024] Open
Abstract
The mesocotyl is of great significance in seedling emergence and in responding to biotic and abiotic stress in maize. The NAM, ATAF, and CUC2 (NAC) transcription factor family plays an important role in maize growth and development; however, its function in the elongation of the maize mesocotyl is still unclear. In this study, we found that the mesocotyl length in zmnac17 loss-of-function mutants was lower than that in the B73 wild type. By using transcriptomic sequencing technology, we identified 444 differentially expressed genes (DEGs) between zmnac17-1 and B73, which were mainly enriched in the "tryptophan metabolism" and "antioxidant activity" pathways. Compared with the control, the zmnac17-1 mutants exhibited a decrease in the content of indole acetic acid (IAA) and an increase in the content of reactive oxygen species (ROS). Our results provide preliminary evidence that ZmNAC17 regulates the elongation of the maize mesocotyl.
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Affiliation(s)
- Ran Yang
- College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China (K.L.); (Q.L.); (L.C.); (F.X.)
- The Characteristic Laboratory of Crop Germplasm Innovation and Application, Provincial Department of Education, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
| | - Kangshi Li
- College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China (K.L.); (Q.L.); (L.C.); (F.X.)
- The Characteristic Laboratory of Crop Germplasm Innovation and Application, Provincial Department of Education, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
| | - Ming Wang
- College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China (K.L.); (Q.L.); (L.C.); (F.X.)
- The Characteristic Laboratory of Crop Germplasm Innovation and Application, Provincial Department of Education, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
| | - Meng Sun
- College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China (K.L.); (Q.L.); (L.C.); (F.X.)
- The Characteristic Laboratory of Crop Germplasm Innovation and Application, Provincial Department of Education, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
| | - Qiuhua Li
- College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China (K.L.); (Q.L.); (L.C.); (F.X.)
- The Characteristic Laboratory of Crop Germplasm Innovation and Application, Provincial Department of Education, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
| | - Liping Chen
- College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China (K.L.); (Q.L.); (L.C.); (F.X.)
- The Characteristic Laboratory of Crop Germplasm Innovation and Application, Provincial Department of Education, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
| | - Feng Xiao
- College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China (K.L.); (Q.L.); (L.C.); (F.X.)
- The Characteristic Laboratory of Crop Germplasm Innovation and Application, Provincial Department of Education, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
| | - Zhenlong Zhang
- College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China (K.L.); (Q.L.); (L.C.); (F.X.)
- The Characteristic Laboratory of Crop Germplasm Innovation and Application, Provincial Department of Education, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
| | - Haiyan Zhang
- College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China (K.L.); (Q.L.); (L.C.); (F.X.)
- The Characteristic Laboratory of Crop Germplasm Innovation and Application, Provincial Department of Education, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
| | - Fuchao Jiao
- College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China (K.L.); (Q.L.); (L.C.); (F.X.)
- The Characteristic Laboratory of Crop Germplasm Innovation and Application, Provincial Department of Education, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
| | - Jingtang Chen
- College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China (K.L.); (Q.L.); (L.C.); (F.X.)
- The Characteristic Laboratory of Crop Germplasm Innovation and Application, Provincial Department of Education, College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
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Zhang S, Ai J, Guo Y, Bai Y, Yao H, Wang F. Cloning and expression analysis of VrNAC13 gene in mung bean. Open Life Sci 2023; 18:20220627. [PMID: 37426623 PMCID: PMC10329274 DOI: 10.1515/biol-2022-0627] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 04/20/2023] [Accepted: 05/15/2023] [Indexed: 07/11/2023] Open
Abstract
To explore the role of NAC transcription factors in mung bean (Vigna ratiata), we here comprehensively analyzed VrNAC13 structure and expression patterns in the mung bean cultivar "Yulin No.1". The nucleotide sequence of VrNAC13 (GenBank accession number xp014518431.1) was determined by cloning and sequencing the gene. A predicted transcriptional activation domain in VrNAC13 was validated with a yeast one-hybrid assay. The composition and functional characteristics of VrNAC13 were analyzed using basic bioinformatics techniques, and the expression characteristics of VrNAC13 were analyzed via quantitative reverse transcription-PCR. The results showed that VrNAC13 was 1,068 bp in length and encoded a product of 355 amino acids. VrNAC13 was predicted to contain a NAM domain and to belong to the NAC transcription factor family. The protein was hydrophilic and contained several threonine phosphorylation sites. Phylogenetic analysis showed that VrNAC13 was highly similar in sequence to two Arabidopsis thaliana NAC proteins; we hypothesize that VrNAC13 may perform functions in mung bean similar to those of the two closely related proteins in Arabidopsis. Promoter analysis of VrNAC13 revealed cis-acting elements predicted to respond to abscisic acid (ABA), gibberellin, auxin, light, drought, low temperature, and other stressors. VrNAC13 was most highly expressed in the leaves and expressed at very low levels in the stem and root. It was experimentally determined to be induced by drought and ABA. Based on these results, VrNAC13 appears to regulate stress resistance in mung bean.
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Affiliation(s)
- Siyu Zhang
- School of Life Sciences, Yulin University, Yulin, P. R. China
| | - Jing Ai
- School of Life Sciences, Yulin University, Yulin, P. R. China
| | - Yaning Guo
- School of Life Sciences, Yulin University, Yulin, P. R. China
| | - Yu Bai
- School of Life Sciences, Yulin University, Yulin, P. R. China
| | - Han Yao
- School of Life Sciences, Yulin University, Yulin, P. R. China
| | - Fugang Wang
- School of Life Sciences, Yulin University, Yulin, P. R. China
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Wang Y, Zang W, Li X, Wang C, Wang R, Jiang T, Zhou B, Yao W. Ectopic Expression of PsnNAC090 Enhances Salt and Osmotic Tolerance in Transgenic Tobacco. Int J Mol Sci 2023; 24:ijms24108985. [PMID: 37240330 DOI: 10.3390/ijms24108985] [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: 04/12/2023] [Revised: 05/14/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
The NAC transcription factor family is well known to play vital roles in plant development and stress responses. For this research, a salt-inducible NAC gene, PsnNAC090 (Po-tri.016G076100.1), was successfully isolated from Populus simonii × Populus nigra. PsnNAC090 contains the same motifs at the N-terminal end of the highly conserved NAM structural domain. The promoter region of this gene is rich in phytohormone-related and stress response elements. Transient transformation of the gene in the epidermal cells of both tobacco and onion showed that the protein was targeted to the whole cell including the cell membrane, cytoplasm and nucleus. A yeast two-hybrid assay demonstrated that PsnNAC090 has transcriptional activation activity with the activation structural domain located at 167-256aa. A yeast one-hybrid experiment showed that PsnNAC090 protein can bind to ABA-responsive elements (ABREs). The spatial and temporal expression patterns of PsnNAC090 under salt and osmotic stresses indicated that the gene was tissue-specific, with the highest expression level in the roots of Populus simonii × Populus nigra. We successfully obtained a total of six transgenic tobacco lines overexpressing PsnNAC090. The physiological indicators including peroxidase (POD) activity, superoxide dismutase (SOD) activity, chlorophyll content, proline content, malondialdehyde (MDA) content and hydrogen peroxide (H2O2) content were measured in three transgenic tobacco lines under NaCl and polyethylene glycol (PEG) 6000 stresses. The findings reveal that PsnNAC090 improves salt and osmotic tolerance by enhancing reactive oxygen species (ROS) scavenging and reducing membrane lipid peroxide content in transgenic tobacco. All the results suggest that the PsnNAC090 gene is a potential candidate gene playing an important role in stress response.
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Affiliation(s)
- Yuting Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Wenjing Zang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Xin Li
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Chaozheng Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Ruiqi Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Tingbo Jiang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Boru Zhou
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Wenjing Yao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, China
- Bamboo Research Institute, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, China
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Wairich A, Vitali A, Adamski JM, Lopes KL, Duarte GL, Ponte LR, Costa HK, Menguer PK, Santos RPD, Fett JP, Sperotto RA, Ricachenevsky FK. Enhanced expression of OsNAC5 leads to up-regulation of OsNAC6 and changes rice (Oryza sativa L.) ionome. Genet Mol Biol 2023; 46:e20220190. [PMID: 37144919 PMCID: PMC10161346 DOI: 10.1590/1678-4685-gmb-2022-0190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 02/17/2023] [Indexed: 05/06/2023] Open
Abstract
NAC transcription factors are plant-specific proteins involved in many processes during the plant life cycle and responses to biotic and abiotic stresses. Previous studies have shown that stress-induced OsNAC5 from rice (Oryza sativa L.) is up-regulated by senescence and might be involved in control of iron (Fe) and zinc (Zn) concentrations in rice seeds. Aiming a better understanding of the role of OsNAC5 in rice plants, we investigated a mutant line carrying a T-DNA insertion in the promoter of OsNAC5, which resulted in enhanced expression of the transcription factor. Plants with OsNAC5 enhanced expression were shorter at the seedling stage and had reduced yield at maturity. In addition, we evaluated the expression level of OsNAC6, which is co-expressed with OsNAC5, and found that enhanced expression of OsNAC5 leads to increased expression of OsNAC6, suggesting that OsNAC5 might regulate OsNAC6 expression. Ionomic analysis of leaves and seeds from the OsNAC5 enhanced expression line revealed lower Fe and Zn concentrations in leaves and higher Fe concentrations in seeds than in WT plants, further suggesting that OsNAC5 may be involved in regulating the ionome in rice plants. Our work shows that fine-tuning of transcription factors is key when aiming at crop improvement.
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Affiliation(s)
- Andriele Wairich
- Universidade Federal do Rio Grande do Sul, Centro de Biotecnologia, Programa de Pós-Graduação em Biologia Celular e Molecular (PPGBCM), Porto Alegre, RS, Brazil
| | - Ariane Vitali
- Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Departamento de Botânica, Porto Alegre, RS, Brazil
| | - Janete Mariza Adamski
- Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Departamento de Botânica, Porto Alegre, RS, Brazil
| | - Karina Letícia Lopes
- Universidade Federal do Rio Grande do Sul, Centro de Biotecnologia, Programa de Pós-Graduação em Biologia Celular e Molecular (PPGBCM), Porto Alegre, RS, Brazil
| | - Guilherme Leitão Duarte
- Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Departamento de Botânica, Porto Alegre, RS, Brazil
| | - Lucas Roani Ponte
- Universidade Federal do Rio Grande do Sul, Centro de Biotecnologia, Programa de Pós-Graduação em Biologia Celular e Molecular (PPGBCM), Porto Alegre, RS, Brazil
| | - Henrique Keller Costa
- Universidade Federal de Santa Maria, Instituto de Ciências Naturais e Exatas, Departamento de Biologia, Porto Alegre, RS, Brazil
| | - Paloma Koprovski Menguer
- Universidade Federal do Rio Grande do Sul, Centro de Biotecnologia, Programa de Pós-Graduação em Biologia Celular e Molecular (PPGBCM), Porto Alegre, RS, Brazil
| | - Rinaldo Pires Dos Santos
- Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Departamento de Botânica, Porto Alegre, RS, Brazil
| | - Janette Palma Fett
- Universidade Federal do Rio Grande do Sul, Centro de Biotecnologia, Programa de Pós-Graduação em Biologia Celular e Molecular (PPGBCM), Porto Alegre, RS, Brazil
- Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Departamento de Botânica, Porto Alegre, RS, Brazil
| | - Raul Antonio Sperotto
- Universidade do Vale do Taquari (Univates), Programa de Pós-Graduação em Biotecnologia (PPGBiotec), Lajeado, RS, Brazil
- Universidade Federal de Pelotas, Programa de Pós-Graduação em Fisiologia Vegetal (PPGFV), Pelotas, RS, Brazil
| | - Felipe Klein Ricachenevsky
- Universidade Federal do Rio Grande do Sul, Centro de Biotecnologia, Programa de Pós-Graduação em Biologia Celular e Molecular (PPGBCM), Porto Alegre, RS, Brazil
- Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Departamento de Botânica, Porto Alegre, RS, Brazil
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Li M, Liu Z, Liu C, Zhu F, Wang K, Wang Z, Li X, Lan X, Guan Q. Drought resistance of tobacco overexpressing the AfNAC1 gene of Amorpha fruticosa Linn. FRONTIERS IN PLANT SCIENCE 2022; 13:980171. [PMID: 36051295 PMCID: PMC9425102 DOI: 10.3389/fpls.2022.980171] [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: 06/28/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
Plants are often adversely affected by abiotic stresses such as drought, low temperature, and salinity during growth, and plant NAC-like transcription factors are involved in regulating growth and developmental processes in response to stresses such as drought and salinity. In this study, to investigate the function of AfNAC1, a co-expression network of AfNAC1 genes was constructed using gene expression data from the Chinese legume deciduous shrub, Amorpha fruticosa Linn. A 576 bp NAC transcription factor (AfNAC1 gene, MN180266) encoding 191 amino acids was isolated from Amorpha fruticosa seedlings by RT-PCR. qRT-PCR showed that the AfNAC1 gene was expressed in the roots, stems, leaves, and flowers of Amorpha fruticosa. However, drought stress significantly increased root expression, and the AfNAC1 protein was localized in the nucleus by green fluorescence detection. This study analyzed the drought resistance of overexpressing tobacco in depth. Under natural drought stress, the chlorophyll and antioxidant enzyme activities of overexpressing plants were significantly higher than those of wild-type (WT) plants, but the MDA content was lower than that of WT; after rehydration the Fv/Fm values of AfNAC1-overexpressing tobacco recovered faster than those of wild-type tobacco and rapidly reached the control levels; AfNAC1 may be involved in the regulation of the photosystem and indirectly in the regulation of the plant in response to drought stress.
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Affiliation(s)
- Minghui Li
- Key Laboratory of the Ministry of Education for Ecological Restoration of Saline Vegetation, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Ziang Liu
- College of Forestry, Northeastern Forestry University, Harbin, China
| | - Chenxi Liu
- Agriculture and Rural Bureau, Suihua, China
| | - Fengjin Zhu
- Key Laboratory of the Ministry of Education for Ecological Restoration of Saline Vegetation, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Kai Wang
- College of Forestry, Northeastern Forestry University, Harbin, China
| | - Zhenyu Wang
- Key Laboratory of Molecular Design Breeding of Soybean, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, China
| | - XiuFeng Li
- Key Laboratory of Molecular Design Breeding of Soybean, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, China
| | - Xingguo Lan
- Key Laboratory of the Ministry of Education for Ecological Restoration of Saline Vegetation, College of Life Sciences, Northeast Forestry University, Harbin, China
| | - Qingjie Guan
- Key Laboratory of the Ministry of Education for Ecological Restoration of Saline Vegetation, College of Life Sciences, Northeast Forestry University, Harbin, China
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Liu GS, Li HL, Grierson D, Fu DQ. NAC Transcription Factor Family Regulation of Fruit Ripening and Quality: A Review. Cells 2022; 11:cells11030525. [PMID: 35159333 PMCID: PMC8834055 DOI: 10.3390/cells11030525] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/27/2022] [Accepted: 01/31/2022] [Indexed: 01/18/2023] Open
Abstract
The NAC transcription factor (TF) family is one of the largest plant-specific TF families and its members are involved in the regulation of many vital biological processes during plant growth and development. Recent studies have found that NAC TFs play important roles during the ripening of fleshy fruits and the development of quality attributes. This review focuses on the advances in our understanding of the function of NAC TFs in different fruits and their involvement in the biosynthesis and signal transduction of plant hormones, fruit textural changes, color transformation, accumulation of flavor compounds, seed development and fruit senescence. We discuss the theoretical basis and potential regulatory models for NAC TFs action and provide a comprehensive view of their multiple roles in modulating different aspects of fruit ripening and quality.
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Affiliation(s)
- Gang-Shuai Liu
- Laboratory of Fruit Biology, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; (G.-S.L.); (H.-L.L.)
| | - Hong-Li Li
- Laboratory of Fruit Biology, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; (G.-S.L.); (H.-L.L.)
| | - Donald Grierson
- Laboratory of Fruit Quality Biology, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zijingang Campus, Zhejiang University, Hangzhou 310058, China;
- Plant Sciences Division, School of Biosciences, Sutton Bonington Campus, University of Nottingham, Loughborough LE12 5RD, UK
| | - Da-Qi Fu
- Laboratory of Fruit Biology, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; (G.-S.L.); (H.-L.L.)
- Correspondence:
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Mapping of QTL for agronomic traits using high-density SNPs with an RIL population in maize. Genes Genomics 2021; 43:1403-1411. [PMID: 34591233 DOI: 10.1007/s13258-021-01169-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 09/16/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Genome wide association studies (GWAS) have been widely used to identify QTLs underlying quantitative traits in humans and animals, and they have also become a popular method of mapping QTLs in many crops, including maize. Advances in high-throughput genotyping technologies enable construction of high-density linkage maps using SNP markers. OBJECTIVES High-density genetic mapping must precede to find molecular markers associated with a particular trait. The objectives of this study were to (1) construct a high-density linkage map using SNP markers and (2) detect the QTLs for grain yield and quality related traits of the Mo17/KW7 RIL population. METHODS In this study, two parental lines, Mo17 (normal maize inbred line) and KW7 (waxy inbred line) and 80 F7:8 lines in the Mo17/KW7 RIL population were genotyped using the MaizeSNP50 BeadChip, an Illumina BeadChip array of 56,110 maize SNPs. Marker integration and detection of QTLs was performed using the inclusive composite interval mapping (ICIM) method within the QTL IciMapping software. RESULTS This study was genotyped using the Illumina MaizeSNP50 BeadChip for maize Mo17/KW7 recombinant inbred line (RIL) population. The 2904 SNP markers were distributed along all 10 maize chromosomes. The total length of the linkage map was 3553.7 cm, with an average interval of 1.22 cm between SNPs. A total of 18 QTLs controlling eight traits were detected in the Mo17/KW7 RIL population. Three QTLs for plant height (PH) were detected on chromosomes 4 and 8 and showed from 16.01% (qPH8) to 19.85% (qPH4a) of phenotypic variance. Five QTLs related to ear height (EH) were identified on chromosomes 3, 4, and 6 and accounted for 3.79% (qEH6) to 27.57% (qEH4b) of phenotypic variance. Five QTLs related to water content (WC) on chromosomes 1, 4, 8, and 9 accounted for 9.55% (qWC8b) to 23.30% (qWC4) of phenotypic variance. One QTL (qAC9) relating to amylose content (AC) on chromosome 9 showed 82.10% of phenotypic variance. CONCLUSIONS The high-density linkage map and putative QTLs of the maize RIL population detected in this study can be effectively utilized in waxy and normal maize breeding programs to facilitate the selection process through marker-assisted selection (MAS) breeding programs.
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Fraga OT, de Melo BP, Quadros IPS, Reis PAB, Fontes EPB. Senescence-Associated Glycine max ( Gm) NAC Genes: Integration of Natural and Stress-Induced Leaf Senescence. Int J Mol Sci 2021; 22:8287. [PMID: 34361053 PMCID: PMC8348617 DOI: 10.3390/ijms22158287] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/20/2021] [Accepted: 07/24/2021] [Indexed: 11/30/2022] Open
Abstract
Leaf senescence is a genetically regulated developmental process that can be triggered by a variety of internal and external signals, including hormones and environmental stimuli. Among the senescence-associated genes controlling leaf senescence, the transcriptional factors (TFs) comprise a functional class that is highly active at the onset and during the progression of leaf senescence. The plant-specific NAC (NAM, ATAF, and CUC) TFs are essential for controlling leaf senescence. Several members of Arabidopsis AtNAC-SAGs are well characterized as players in elucidated regulatory networks. However, only a few soybean members of this class display well-known functions; knowledge about their regulatory circuits is still rudimentary. Here, we describe the expression profile of soybean GmNAC-SAGs upregulated by natural senescence and their functional correlation with putative AtNAC-SAGs orthologs. The mechanisms and the regulatory gene networks underlying GmNAC081- and GmNAC030-positive regulation in leaf senescence are discussed. Furthermore, new insights into the role of GmNAC065 as a negative senescence regulator are presented, demonstrating extraordinary functional conservation with the Arabidopsis counterpart. Finally, we describe a regulatory circuit which integrates a stress-induced cell death program with developmental leaf senescence via the NRP-NAC-VPE signaling module.
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Affiliation(s)
- Otto Teixeira Fraga
- Biochemistry and Molecular Biology Department, Universidade Federal de Viçosa, Viçosa 36570.000, MG, Brazil; (O.T.F.); (B.P.d.M.); (I.P.S.Q.); (P.A.B.R.)
- National Institute of Science and Technology in Plant-Pest Interactions, INCTIPP–BIOAGRO, Universidade Federal de Viçosa, Viçosa 36570.000, MG, Brazil
| | - Bruno Paes de Melo
- Biochemistry and Molecular Biology Department, Universidade Federal de Viçosa, Viçosa 36570.000, MG, Brazil; (O.T.F.); (B.P.d.M.); (I.P.S.Q.); (P.A.B.R.)
- Embrapa Genetic Resources and Biotechnology, Brasília 70770.917, DF, Brazil
| | - Iana Pedro Silva Quadros
- Biochemistry and Molecular Biology Department, Universidade Federal de Viçosa, Viçosa 36570.000, MG, Brazil; (O.T.F.); (B.P.d.M.); (I.P.S.Q.); (P.A.B.R.)
- National Institute of Science and Technology in Plant-Pest Interactions, INCTIPP–BIOAGRO, Universidade Federal de Viçosa, Viçosa 36570.000, MG, Brazil
| | - Pedro Augusto Braga Reis
- Biochemistry and Molecular Biology Department, Universidade Federal de Viçosa, Viçosa 36570.000, MG, Brazil; (O.T.F.); (B.P.d.M.); (I.P.S.Q.); (P.A.B.R.)
- National Institute of Science and Technology in Plant-Pest Interactions, INCTIPP–BIOAGRO, Universidade Federal de Viçosa, Viçosa 36570.000, MG, Brazil
| | - Elizabeth Pacheco Batista Fontes
- Biochemistry and Molecular Biology Department, Universidade Federal de Viçosa, Viçosa 36570.000, MG, Brazil; (O.T.F.); (B.P.d.M.); (I.P.S.Q.); (P.A.B.R.)
- National Institute of Science and Technology in Plant-Pest Interactions, INCTIPP–BIOAGRO, Universidade Federal de Viçosa, Viçosa 36570.000, MG, Brazil
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Bian Z, Gao H, Wang C. NAC Transcription Factors as Positive or Negative Regulators during Ongoing Battle between Pathogens and Our Food Crops. Int J Mol Sci 2020; 22:E81. [PMID: 33374758 PMCID: PMC7795297 DOI: 10.3390/ijms22010081] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/20/2020] [Accepted: 12/21/2020] [Indexed: 01/13/2023] Open
Abstract
The NAC (NAM, ATAF1/2, and CUC2) family of proteins is one of the largest plant-specific transcription factor (TF) families and its members play varied roles in plant growth, development, and stress responses. In recent years, NAC TFs have been demonstrated to participate in crop-pathogen interactions, as positive or negative regulators of the downstream defense-related genes. NAC TFs link signaling pathways between plant hormones, including salicylic acid (SA), jasmonic acid (JA), ethylene (ET), and abscisic acid (ABA), or other signals, such as reactive oxygen species (ROS), to regulate the resistance against pathogens. Remarkably, NAC TFs can also contribute to hypersensitive response and stomatal immunity or can be hijacked as virulence targets of pathogen effectors. Here, we review recent progress in understanding the structure, biological functions and signaling networks of NAC TFs in response to pathogens in several main food crops, such as rice, wheat, barley, and tomato, and explore the directions needed to further elucidate the function and mechanisms of these key signaling molecules.
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Affiliation(s)
| | | | - Chongying Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China; (Z.B.); (H.G.)
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10
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Duan AQ, Yang XL, Feng K, Liu JX, Xu ZS, Xiong AS. Genome-wide analysis of NAC transcription factors and their response to abiotic stress in celery (Apium graveolens L.). Comput Biol Chem 2020; 84:107186. [DOI: 10.1016/j.compbiolchem.2019.107186] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 11/23/2019] [Accepted: 11/26/2019] [Indexed: 11/29/2022]
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11
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Identification and Expression Analysis of the NAC Gene Family in Coffea canephora. AGRONOMY-BASEL 2019. [DOI: 10.3390/agronomy9110670] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The NAC gene family is one of the largest families of transcriptional regulators in plants, and it plays important roles in the regulation of growth and development as well as in stress responses. Genome-wide analyses have been performed in diverse plant species, but there is still no systematic analysis of the NAC genes of Coffea canephora Pierre ex A. Froehner. In this study, we identified 63 NAC genes from the genome of C. canephora. The basic features and comparison analysis indicated that the NAC gene members increased via duplication events during the evolution of the plant. Phylogenetic analysis divided the NAC proteins from C. canephora, Arabidopsis and rice into 16 subgroups. Analysis of the expression patterns of CocNACs under cold stress and coffee bean development indicated that 38 CocNACs were differentially expressed under cold stress; six genes may play important roles in the process of cold acclimation, and four genes among 54 CocNACs showing a variety of expression patterns during different developmental stages of coffee beans may be positively related to the bean development. This study can expand our understanding of the functions of the CocNAC gene family in cold responses and bean development, thereby potentially intensifying the molecular breeding programs of Coffea spp. plants.
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Bengoa Luoni S, Astigueta FH, Nicosia S, Moschen S, Fernandez P, Heinz R. Transcription Factors Associated with Leaf Senescence in Crops. PLANTS (BASEL, SWITZERLAND) 2019; 8:E411. [PMID: 31614987 PMCID: PMC6843677 DOI: 10.3390/plants8100411] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/21/2019] [Accepted: 08/23/2019] [Indexed: 12/13/2022]
Abstract
Leaf senescence is a complex mechanism controlled by multiple genetic and environmental variables. Different crops present a delay in leaf senescence with an important impact on grain yield trough the maintenance of the photosynthetic leaf area during the reproductive stage. Additionally, because of the temporal gap between the onset and phenotypic detection of the senescence process, candidate genes are key tools to enable the early detection of this process. In this sense and given the importance of some transcription factors as hub genes in senescence pathways, we present a comprehensive review on senescence-associated transcription factors, in model plant species and in agronomic relevant crops. This review will contribute to the knowledge of leaf senescence process in crops, thus providing a valuable tool to assist molecular crop breeding.
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Affiliation(s)
- Sofia Bengoa Luoni
- Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Autónoma de Buenos Aires 1425, Argentina.
| | - Francisco H Astigueta
- Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Autónoma de Buenos Aires 1425, Argentina.
- Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín, San Martín, Buenos Aires 1650, Argentina.
| | - Salvador Nicosia
- Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Autónoma de Buenos Aires 1425, Argentina.
- Universidad Nacional de Lujan, Cruce Rutas Nac. 5 y 7, Lujan, Buenos Aires 6700, Argentina.
| | - Sebastian Moschen
- Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Autónoma de Buenos Aires 1425, Argentina.
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Famaillá, Tucumán 4142, Argentina.
| | - Paula Fernandez
- Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Autónoma de Buenos Aires 1425, Argentina.
- Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín, San Martín, Buenos Aires 1650, Argentina.
- Instituto de Agrobiotecnología y Biología Molecular (INTA-CONICET), Instituto de Biotecnología, Centro de Investigaciones en Ciencias Agronómicas y Veterinarias, Instituto Nacional de Tecnología Agropecuaria, Hurlingham, Buenos Aires 1686, Argentina.
| | - Ruth Heinz
- Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Autónoma de Buenos Aires 1425, Argentina.
- Instituto de Agrobiotecnología y Biología Molecular (INTA-CONICET), Instituto de Biotecnología, Centro de Investigaciones en Ciencias Agronómicas y Veterinarias, Instituto Nacional de Tecnología Agropecuaria, Hurlingham, Buenos Aires 1686, Argentina.
- Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires 1428, Argentina.
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Liu D, Li J, Lu J, Tian B, Liu X, Yang G, Pei Y. Cloning and functional analysis of four O-Acetylserine (thiol) lyase family genes from foxtail millet. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 139:325-332. [PMID: 30947063 DOI: 10.1016/j.plaphy.2019.03.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 03/20/2019] [Indexed: 06/09/2023]
Abstract
Cysteine is the first organic molecule generated during the assimilation of sulfate. As such, cysteine and its derivatives are always essential signal molecules and thus have important roles in the regulation of many plant processes. O-acetylserine (thiol) lyase (OASTL) catalyzes the last step of the biosynthesis of cysteine. At present, detailed and comprehensive work about these enzymes has only been reported from the plant Arabidopsis thaliana, though sporadic studies on OASTL have been conducted on other dicots, such as spinach and soybean. However, few reports on the functions of OASTLs in monocots have been found in the literature. Here in this study, we obtained four SiOASTL genes (SiOASTL7, SiOASTL8, SiOASTL9 and SiOASTL10) from foxtail millet and analyzed their potential functions. Phylogenetically, the four SiOASTL genes did not belong to any published subfamily of the OASTL genes; instead they constituted a new subfamily specific to the OASTL genes from monocots. In sequencing, we found that with the exception of the pseudogene SiOASTL8, proteins encoded by the other three genes exhibited high similarity with OASTL proteins from Arabidopsis, though the critical PLP-binding sites of both SiOASTL7 and SiOASTL10 were missing. The enzymatic activity assays demonstrated that SiOASTL9 has the ability to catalyze the biosynthesis of both cysteine and S-sulfocysteine, while SiOASTL7 and SiOASTL10 did not possess any previously reported catalyzing abilities. In addition, the gene expression pattern analysis showed that all four genes were widely expressed in various tissues of foxtail millet, and all had a preference in the leaves. Under abiotic stresses, the expression of these genes could be induced by salt and drought stress. Our finding that cadmium could only up-regulate the transcription of SlOASTL8 and SlOASTL9, further indicates the diversified responses of SiOASTLs to abiotic stresses.
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Affiliation(s)
- Danmei Liu
- College of Life Science, Shanxi University, Taiyuan, 030006, China; Shanxi Key Laboratory for Research and Development of Regional Plants, Taiyuan, 030006, China
| | - Juan Li
- College of Life Science, Shanxi University, Taiyuan, 030006, China; Shanxi Key Laboratory for Research and Development of Regional Plants, Taiyuan, 030006, China
| | - Juanjuan Lu
- College of Life Science, Shanxi University, Taiyuan, 030006, China; Shanxi Key Laboratory for Research and Development of Regional Plants, Taiyuan, 030006, China
| | - Baohua Tian
- Taiyuan University of Technology, Taiyuan, 030024, China
| | - Xin Liu
- Key Lab of Plant Biotechnology in Universities of Shandong Province, College of Life Science, Qingdao Agricultural University, Qingdao, 266109, China
| | - Guangdong Yang
- Department of Chemistry and Biochemistry, Laurentian University, Canada
| | - Yanxi Pei
- College of Life Science, Shanxi University, Taiyuan, 030006, China; Shanxi Key Laboratory for Research and Development of Regional Plants, Taiyuan, 030006, China.
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Yang X, Kim MY, Ha J, Lee SH. Overexpression of the Soybean NAC Gene GmNAC109 Increases Lateral Root Formation and Abiotic Stress Tolerance in Transgenic Arabidopsis Plants. FRONTIERS IN PLANT SCIENCE 2019; 10:1036. [PMID: 32153598 PMCID: PMC6707213 DOI: 10.3389/fpls.2019.01036] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 07/24/2019] [Indexed: 05/02/2023]
Abstract
NACs are plant-specific transcription factors that have crucial roles in plant development and biotic and/or abiotic stress responses. This study characterized the functions of the soybean NAC gene GmNAC109 using an overexpression construct in Arabidopsis lines. Sequence analysis revealed that GmNAC109 is highly homologous to ATAF1 (Arabidopsis Transcription Activation Factor 1), which regulates biotic and abiotic stress responses. GmNAC109 protein localized to the nucleus and its C-terminal domain exhibited transcriptional activation activity. Salt, dehydration, and cold stresses significantly increased expression of GmNAC109 in soybean. Similarly, Arabidopsis plants overexpressing GmNAC109 were more tolerant to drought and salt stress than wild-type Col-0 plants. Stress response-related genes, such as DREB1A (drought-responsive element-binding 1A), DREB2A, AREB1 (ABSCISIC ACID-RESPONSIVE ELEMENT BINDING PROTEIN 1), AREB2, RD29A (RESPONSIVE TO Desiccation 29A), and COR15A (COLD REGULATED 15A) were upregulated in GmNAC109-overexpressing transgenic Arabidopsis lines. The transgenic lines showed upregulation of the ABA-responsive genes ABI1 (ABA INSENSITIVE 1) and ABI5 and hypersensitivity to ABA. However, GmNAC109 did not increase expression of the ABA-biosynthetic gene NCED3 (NINE-CIS-EPOXYCAROTENOID DIOXYGENASE 3) and endogenous ABA content in the transgenic lines. Overexpression of GmNAC109 significantly increased lateral root formation in transgenic Arabidopsis lines. Expression of AIR3 (AUXIN-INDUCED IN ROOT CULTURES 3) and ARF2 (AUXIN RESPONSE FACTOR 2) was increased and decreased in these transgenic lines, respectively, indicating that GmNAC109 is involved in the auxin signaling pathway and thereby helps to regulate hairy root formation. Our results provide a basis for development of soybean lines with improved tolerance to abiotic stresses via genetic manipulation.
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Affiliation(s)
- Xuefei Yang
- Department of Plant Science and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
| | - Moon Young Kim
- Department of Plant Science and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
- Plant Genomics and Breeding Institute, Seoul National University, Seoul, South Korea
| | - Jungmin Ha
- Department of Plant Science and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
- Plant Genomics and Breeding Institute, Seoul National University, Seoul, South Korea
| | - Suk-Ha Lee
- Department of Plant Science and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
- Plant Genomics and Breeding Institute, Seoul National University, Seoul, South Korea
- *Correspondence: Suk-Ha Lee,
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An JP, Li R, Qu FJ, You CX, Wang XF, Hao YJ. An apple NAC transcription factor negatively regulates cold tolerance via CBF-dependent pathway. JOURNAL OF PLANT PHYSIOLOGY 2018; 221:74-80. [PMID: 29253732 DOI: 10.1016/j.jplph.2017.12.009] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 12/01/2017] [Accepted: 12/01/2017] [Indexed: 05/19/2023]
Abstract
Cold stress is an adverse stimulus that affects plant growth and development, and the C-repeat binding factor (CBF) cold-regulatory cascade has been regarded as a master regulator in the plant response to cold stress. Here, we showed that a NAC transcription factor modulated low-temperature tolerance. MdNAC029/MdNAP, an apple NAC gene was isolated and its role in regulating cold tolerance was investigated. MdNAC029 was responsive to low-temperature treatment, and over-expression of MdNAC029 reduced cold tolerance in apple calli and Arabidopsis. Furthermore, EMSA assays and transient expression assays demonstrated that MdNAC029 directly repressed the expression of MdCBF1 and MdCBF4 by binding to their promoters. Taken together, our data suggest that MdNAC029 functions as a negative regulator in regulating plant cold tolerance in a CBF-dependent manner, providing a deeper understanding of NAC transcription-factor-mediated cold tolerance.
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Affiliation(s)
- Jian-Ping An
- State Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, Shandong, China
| | - Rui Li
- State Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, Shandong, China
| | - Feng-Jia Qu
- State Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, Shandong, China
| | - Chun-Xiang You
- State Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, Shandong, China
| | - Xiao-Fei Wang
- State Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, Shandong, China.
| | - Yu-Jin Hao
- State Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, 271018, Shandong, China.
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16
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Melo BP, Fraga OT, Silva JCF, Ferreira DO, Brustolini OJB, Carpinetti PA, Machado JPB, Reis PAB, Fontes EPB. Revisiting the Soybean GmNAC Superfamily. FRONTIERS IN PLANT SCIENCE 2018; 9:1864. [PMID: 30619426 PMCID: PMC6305603 DOI: 10.3389/fpls.2018.01864] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 12/04/2018] [Indexed: 05/07/2023]
Abstract
The NAC (NAM, ATAF, and CUC) genes encode transcription factors involved with the control of plant morph-physiology and stress responses. The release of the last soybean (Glycine max) genome assembly (Wm82.a2.v1) raised the possibility that new NAC genes would be present in the soybean genome. Here, we interrogated the last version of the soybean genome against a conserved NAC domain structure. Our analysis identified 32 putative novel NAC genes, updating the superfamily to 180 gene members. We also organized the genes in 15 phylogenetic subfamilies, which showed a perfect correlation among sequence conservation, expression profile, and function of orthologous Arabidopsis thaliana genes and NAC soybean genes. To validate our in silico analyses, we monitored the stress-mediated gene expression profiles of eight new NAC-genes by qRT-PCR and monitored the GmNAC senescence-associated genes by RNA-seq. Among ER stress, osmotic stress and salicylic acid treatment, all the novel tested GmNAC genes responded to at least one type of stress, displaying a complex expression profile under different kinetics and extension of the response. Furthermore, we showed that 40% of the GmNACs were differentially regulated by natural leaf senescence, including eight (8) newly identified GmNACs. The developmental and stress-responsive expression profiles of the novel NAC genes fitted perfectly with their phylogenetic subfamily. Finally, we examined two uncharacterized senescence-associated proteins, GmNAC065 and GmNAC085, and a novel, previously unidentified, NAC protein, GmNAC177, and showed that they are nuclear localized, and except for GmNAC065, they display transactivation activity in yeast. Consistent with a role in leaf senescence, transient expression of GmNAC065 and GmNAC085 induces the appearance of hallmarks of leaf senescence, including chlorophyll loss, leaf yellowing, lipid peroxidation and accumulation of H2O2. GmNAC177 was clustered to an uncharacterized subfamily but in close proximity to the TIP subfamily. Accordingly, it was rapidly induced by ER stress and by salicylic acid under late kinetic response and promoted cell death in planta. Collectively, our data further substantiated the notion that the GmNAC genes display functional and expression profiles consistent with their phylogenetic relatedness and established a complete framework of the soybean NAC superfamily as a foundation for future analyses.
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Affiliation(s)
- Bruno P. Melo
- National Institute of Science and Technology in Plant-Pest Interactions, Bioagro, Universidade Federal de Viçosa, Viçosa, Brazil
- Departamento de Bioquímica e Biologia Molecular/BIOAGRO, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Otto T. Fraga
- National Institute of Science and Technology in Plant-Pest Interactions, Bioagro, Universidade Federal de Viçosa, Viçosa, Brazil
- Departamento de Bioquímica e Biologia Molecular/BIOAGRO, Universidade Federal de Viçosa, Viçosa, Brazil
| | - José Cleydson F. Silva
- National Institute of Science and Technology in Plant-Pest Interactions, Bioagro, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Dalton O. Ferreira
- National Institute of Science and Technology in Plant-Pest Interactions, Bioagro, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Otávio J. B. Brustolini
- National Institute of Science and Technology in Plant-Pest Interactions, Bioagro, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Paola A. Carpinetti
- Departamento de Bioquímica e Biologia Molecular/BIOAGRO, Universidade Federal de Viçosa, Viçosa, Brazil
| | | | - Pedro A. B. Reis
- National Institute of Science and Technology in Plant-Pest Interactions, Bioagro, Universidade Federal de Viçosa, Viçosa, Brazil
- Departamento de Bioquímica e Biologia Molecular/BIOAGRO, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Elizabeth P. B. Fontes
- National Institute of Science and Technology in Plant-Pest Interactions, Bioagro, Universidade Federal de Viçosa, Viçosa, Brazil
- Departamento de Bioquímica e Biologia Molecular/BIOAGRO, Universidade Federal de Viçosa, Viçosa, Brazil
- *Correspondence: Elizabeth P. B. Fontes
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Farooq M, Gogoi N, Hussain M, Barthakur S, Paul S, Bharadwaj N, Migdadi HM, Alghamdi SS, Siddique KHM. Effects, tolerance mechanisms and management of salt stress in grain legumes. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 118:199-217. [PMID: 28648997 DOI: 10.1016/j.plaphy.2017.06.020] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Revised: 06/14/2017] [Accepted: 06/15/2017] [Indexed: 05/23/2023]
Abstract
Salt stress is an ever-present threat to crop yields, especially in countries with irrigated agriculture. Efforts to improve salt tolerance in crop plants are vital for sustainable crop production on marginal lands to ensure future food supplies. Grain legumes are a fascinating group of plants due to their high grain protein contents and ability to fix biological nitrogen. However, the accumulation of excessive salts in soil and the use of saline groundwater are threatening legume production worldwide. Salt stress disturbs photosynthesis and hormonal regulation and causes nutritional imbalance, specific ion toxicity and osmotic effects in legumes to reduce grain yield and quality. Understanding the responses of grain legumes to salt stress and the associated tolerance mechanisms, as well as assessing management options, may help in the development of strategies to improve the performance of grain legumes under salt stress. In this manuscript, we discuss the effects, tolerance mechanisms and management of salt stress in grain legumes. The principal inferences of the review are: (i) salt stress reduces seed germination (by up to more than 50%) either by inhibiting water uptake and/or the toxic effect of ions in the embryo, (ii) salt stress reduces growth (by more than 70%), mineral uptake, and yield (by 12-100%) due to ion toxicity and reduced photosynthesis, (iii) apoplastic acidification is a good indicator of salt stress tolerance, (iv) tolerance to salt stress in grain legumes may develop through excretion and/or compartmentalization of toxic ions, increased antioxidant capacity, accumulation of compatible osmolytes, and/or hormonal regulation, (v) seed priming and nutrient management may improve salt tolerance in grain legumes, (vi) plant growth promoting rhizobacteria and arbuscular mycorrhizal fungi may help to improve salt tolerance due to better plant nutrient availability, and (vii) the integration of screening, innovative breeding, and the development of transgenics and crop management strategies may enhance salt tolerance and yield in grain legumes on salt-affected soils.
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Affiliation(s)
- Muhammad Farooq
- Department of Agronomy, University of Agriculture, Faisalabad 38040, Pakistan; The UWA Institute of Agriculture and School of Agriculture & Environment, The University of Western Australia, Perth, WA 6001, Australia; College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Nirmali Gogoi
- Department of Environmental Science, Tezpur University, Tezpur 784028, Assam, India
| | - Mubshar Hussain
- Department of Agronomy, Bahauddin Zakariya University Multan, Pakistan
| | - Sharmistha Barthakur
- National Research Centre on Plant Biotechnology, Pusa Campus, New Delhi 110012, India
| | - Sreyashi Paul
- Department of Environmental Science, Tezpur University, Tezpur 784028, Assam, India
| | - Nandita Bharadwaj
- Department of Environmental Science, Tezpur University, Tezpur 784028, Assam, India
| | - Hussein M Migdadi
- College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Salem S Alghamdi
- College of Food and Agricultural Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Kadambot H M Siddique
- The UWA Institute of Agriculture and School of Agriculture & Environment, The University of Western Australia, Perth, WA 6001, Australia
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Bhattacharjee P, Das R, Mandal A, Kundu P. Functional characterization of tomato membrane-bound NAC transcription factors. PLANT MOLECULAR BIOLOGY 2017; 93:511-532. [PMID: 28039561 DOI: 10.1007/s11103-016-0579-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 12/10/2016] [Indexed: 05/18/2023]
Abstract
Genome-wide analysis was carried out to identify and analyze differential expression pattern of tomato membrane bound NAC transcription factors (SlNACMTFs) during stresses. Two biotic-stress-related SlNACMTFs have been characterized to elucidate their regulatory function. NAC transcription factors are known regulators of stress-related gene expression. As Stresses are perceived and transmitted by membrane-bound proteins, functional characterization of membrane-associated NAC transcription factors in tomato can reveal valuable insight about membrane-mediated stress-signalling. Tomato genome encodes 13 NAC genes which have predicted transmembrane domain(s) (SlNACMTFs). mRNA of 12 SlNACMTFs were readily detected in multiple tissues, and also in polysome isolated from leaf, confirming active transcription and translation from these genes occur under normal physiological condition. Additionally, most of the SlNACMTFs were differentially regulated during stresses and stress-related transcription factor binding sites are prevalent in their promoters. SlNACMTF3 and 8 were majorly regulated in biotic and abiotic stresses. Like other MTFs, SlNACMTF3 was translocated to the plasma membrane, whereas the C-terminus truncated (ΔC) form localized in the cytoplasm and the nucleus. Accordingly, the ΔC forms significantly influenced the activity of promoters harbouring NAC binding sites (NACbs). Furthermore, the NAC domain of these transcription factors could directly interact with an NACbs, and the proteins failed to regulate a promoter lacking a crucial NACbs. Interestingly, the type of influence to an NACbs containing promoter was dependent on the context of the NACbs, as the same SlNACMTF showed an alternative mode of regulation on different promoters, as well as the same promoter activity was oppositely regulated by two different SlNACMTF. Finally, both SlNACMTFs demonstrated the differential regulatory effect on the expression of several stress-related genes by interacting with the putative NACbs in their promoter region, suggesting their direct role in plant stress response.
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Affiliation(s)
- Payel Bhattacharjee
- Division of Plant Biology, Bose Institute, P1/12 CIT Scheme VII (M), Kolkata, 700054, India
| | - Rohit Das
- Division of Plant Biology, Bose Institute, P1/12 CIT Scheme VII (M), Kolkata, 700054, India
| | - Arunava Mandal
- Division of Plant Biology, Bose Institute, P1/12 CIT Scheme VII (M), Kolkata, 700054, India
| | - Pallob Kundu
- Division of Plant Biology, Bose Institute, P1/12 CIT Scheme VII (M), Kolkata, 700054, India.
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Hussain RM, Ali M, Feng X, Li X. The essence of NAC gene family to the cultivation of drought-resistant soybean (Glycine max L. Merr.) cultivars. BMC PLANT BIOLOGY 2017; 17:55. [PMID: 28241800 PMCID: PMC5330122 DOI: 10.1186/s12870-017-1001-y] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 02/13/2017] [Indexed: 05/03/2023]
Abstract
BACKGROUND The NAC gene family is notable due to its large size, as well as its relevance in crop cultivation - particularly in terms of enhancing stress tolerance of plants. These plant-specific proteins contain NAC domain(s) that are named after Petunia NAM and Arabidopsis ATAF1/2 and CUC2 transcription factors based on the consensus sequence they have. Despite the knowledge available regarding NAC protein function, an extensive study on the possible use of GmNACs in developing soybean cultivars with superior drought tolerance is yet to be done. RESULTS In response to this, our study was carried out, mainly through means of phylogenetic analysis (rice and Arabidopsis NAC genes served as seeding sequences). Through this, 139 GmNAC genes were identified and later grouped into 17 clusters. Furthermore, real-time quantitative PCR was carried out on drought-stressed and unstressed leaf tissues of both sensitive (B217 and H228) and tolerant (Jindou 74 and 78) cultivars. This was done to analyze the gene expression of 28 dehydration-responsive GmNAC genes. Upon completing the analysis, it was found that GmNAC gene expression is actually dependent on genotype. Eight of the 28 selected genes (GmNAC004, GmNAC021, GmNAC065, GmNAC066, GmNAC073, GmNAC082, GmNAC083 and GmNAC087) were discovered to have high expression levels in the drought-resistant soybean varieties tested. This holds true for both extreme and standard drought conditions. Alternatively, the drought-sensitive cultivars exhibited lower GmNAC expression levels in comparison to their tolerant counterparts. CONCLUSION The study allowed for the identification of eight GmNAC genes that could be focused upon in future attempts to develop superior soybean varieties, particularly in terms of drought resistance. This study revealed that there were more dehydration-responsive GmNAC genes as (GmNAC004, GmNAC005, GmNAC020 and GmNAC021) in addition to what were reported in earlier inquiries. It is important to note though, that discovering such notable genes is not the only goal of the study. It managed to put emphasis on the significance of further understanding the potential of soybean GmNAC genes, for the purpose of enhancing tolerance towards abiotic stress in general. This scientific inquiry has also revealed that cultivar genotypes tend to differ in their drought-induced gene expression.
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Affiliation(s)
- Reem M Hussain
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.
- Tishreen University, Faculty of Agriculture, Crop Field Department, Tishreen University, Lattakia, Syria.
| | - Mohammed Ali
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Xing Feng
- National Key Lab of Crop Genetic Improvement, College of Life science and Technology, Bioinformatics Lab, Huazhong Agriculture University, Wuhan, 430070, Hubei, People's Republic of China
| | - Xia Li
- State Key Laboratory of Agricultural Microbiology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.
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Seok HY, Woo DH, Nguyen LV, Tran HT, Tarte VN, Mehdi SMM, Lee SY, Moon YH. Arabidopsis AtNAP functions as a negative regulator via repression of AREB1 in salt stress response. PLANTA 2017; 245:329-341. [PMID: 27770200 DOI: 10.1007/s00425-016-2609-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 10/17/2016] [Indexed: 05/11/2023]
Abstract
AtNAP , an Arabidopsis NAC transcription factor family gene, functions as a negative regulator via transcriptional repression of AREB1 in salt stress response. AtNAP is an NAC family transcription factor in Arabidopsis and is known to be a positive regulator of senescence. However, its exact function and underlying molecular mechanism in stress responses are not well known. Here, we investigated functional roles of AtNAP in salt stress response. AtNAP expression significantly increased at the seedling stage, with higher expression in both shoots and roots under NaCl, mannitol, and ABA treatments. T-DNA insertional loss-of-function mutants of AtNAP were more tolerant to salt stress than wild type (WT), whereas AtNAP-overexpressing transgenic plants (OXs) were more sensitive to salt stress than WT during germination, seedling development, and mature plant stage. Transcript levels of stress-responsive genes in the ABA-dependent pathway, such as AREB1, RD20, and RD29B, were significantly higher and lower in atnap mutants and AtNAP OXs, respectively, than in WT under salt stress conditions, suggesting that AtNAP might negatively regulate the expression of those genes under salt stress conditions. Indeed, AtNAP repressed the promoter activity of AREB1 under normal and salt stress conditions. These results indicate that AtNAP functions as a negative regulator in the salt stress response. Our results, together with previous studies, suggest that AtNAP functions as a negative regulator in osmotic stress responses, whereas it functions as a positive regulator in senescence.
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Affiliation(s)
- Hye-Yeon Seok
- Department of Molecular Biology, Pusan National University, Busan, 609-735, South Korea
| | - Dong-Hyuk Woo
- Department of Molecular Biology, Pusan National University, Busan, 609-735, South Korea
| | - Linh Vu Nguyen
- Department of Molecular Biology, Pusan National University, Busan, 609-735, South Korea
| | - Huong T Tran
- Department of Molecular Biology, Pusan National University, Busan, 609-735, South Korea
| | - Vaishali N Tarte
- Department of Molecular Biology, Pusan National University, Busan, 609-735, South Korea
| | | | - Sun-Young Lee
- Department of Molecular Biology, Pusan National University, Busan, 609-735, South Korea
| | - Yong-Hwan Moon
- Department of Molecular Biology, Pusan National University, Busan, 609-735, South Korea.
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Ondati E, Lingling D, Yaning G, Chaoyou P, Hengling W, Meizhen S, Shuli F, Shuxun Y. GhNAC18, a novel cotton (Gossypium hirsutum L.) NAC gene, is involved in leaf senescence and diverse stress responses. ACTA ACUST UNITED AC 2016. [DOI: 10.5897/ajb2016.15224] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Li F, Li J, Qian M, Han M, Cao L, Liu H, Zhang D, Zhao C. Identification of Peach NAP Transcription Factor Genes and Characterization of their Expression in Vegetative and Reproductive Organs during Development and Senescence. FRONTIERS IN PLANT SCIENCE 2016; 7:147. [PMID: 26909092 PMCID: PMC4754701 DOI: 10.3389/fpls.2016.00147] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 01/28/2016] [Indexed: 05/18/2023]
Abstract
The NAP (NAC-like, activated by AP3/P1) transcription factor belongs to a subfamily of the NAC transcription factor family, and is believed to have an important role in regulating plant growth and development. However, there is very little information about this subfamily in Rosaceous plants. We identified seven NAP genes in the peach genome. PpNAP2 was categorized in the NAP I group, and contained a conserved transcription activation region. The other PpNAP genes belonged to the NAP II group. The expression patterns of the PpNAP genes differed in various organs and developmental stages. PpNAP1 and PpNAP2 were highly expressed in mature and senescing flowers, but not in leaves, fruits, and flower buds. PpNAP3 and PpNAP5 were only expressed in leaves. The PpNAP4 expression level was high in mature and senescing fruits, while PpNAP6 and PpNAP7 expression was up-regulated in mature and senescent leaves and flowers. During the fruit development period, the PpNAP4 and PpNAP6 expression levels rapidly increased during the S1 and S4 stages, which suggests these genes are involved in the first exponential growth phase and fruit ripening. During the fruit ripening and softening period, the PpNAP1, PpNAP4, and PpNAP6 expression levels were high during the early storage period, which was accompanied by a rapid increase in ethylene production. PpNAP1, PpNAP4, and PpNAP6 expression slowly increased during the middle or late storage periods, and peaked at the end of the storage period. Additionally, abscisic acid (ABA)-treated fruits were softer and produced more ethylene than the controls. Furthermore, the PpNAP1, PpNAP4, and PpNAP6 expression levels were higher in ABA-treated fruits. These results suggest that PpNAP1, PpNAP4, and PpNAP6 are responsive to ABA and may regulate peach fruit ripening.
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Affiliation(s)
| | | | | | | | | | | | | | - Caiping Zhao
- College of Horticulture, Northwest A&F UniversityYangling, China
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Ren S, Lyle C, Jiang GL, Penumala A. Soybean Salt Tolerance 1 (GmST1) Reduces ROS Production, Enhances ABA Sensitivity, and Abiotic Stress Tolerance in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2016; 7:445. [PMID: 27148284 PMCID: PMC4826999 DOI: 10.3389/fpls.2016.00445] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Accepted: 03/21/2016] [Indexed: 05/18/2023]
Abstract
Abiotic stresses, including high soil salinity, significantly reduce crop production worldwide. Salt tolerance in plants is a complex trait and is regulated by multiple mechanisms. Understanding the mechanisms and dissecting the components on their regulatory pathways will provide new insights, leading to novel strategies for the improvement of salt tolerance in agricultural and economic crops of importance. Here we report that soybean salt tolerance 1, named GmST1, exhibited strong tolerance to salt stress in the Arabidopsis transgenic lines. The GmST1-overexpressed Arabidopsis also increased sensitivity to ABA and decreased production of reactive oxygen species under salt stress. In addition, GmST1 significantly improved drought tolerance in Arabidopsis transgenic lines. GmST1 belongs to a 3-prime part of Glyma.03g171600 gene in the current version of soybean genome sequence annotation. However, comparative reverse transcription-polymerase chain reaction analysis around Glyma.03g171600 genomic region confirmed that GmST1 might serve as an intact gene in soybean leaf tissues. Unlike Glyma.03g171600 which was not expressed in leaves, GmST1 was strongly induced by salt treatment in the leaf tissues. By promoter analysis, a TATA box was detected to be positioned close to GmST1 start codon and a putative ABRE and a DRE cis-acting elements were identified at about 1 kb upstream of GmST1 gene. The data also indicated that GmST1-transgenic lines survived under drought stress and showed a significantly lower water loss than non-transgenic lines. In summary, our results suggest that overexpression of GmST1 significantly improves Arabidopsis tolerance to both salt and drought stresses and the gene may be a potential candidate for genetic engineering of salt- and drought-tolerant crops.
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Affiliation(s)
- Shuxin Ren
- Agricultural Research Station, Virginia State UniversityPetersburg, VA, USA
- *Correspondence: Shuxin Ren,
| | - Chimera Lyle
- Agricultural Research Station, Virginia State UniversityPetersburg, VA, USA
| | - Guo-liang Jiang
- Agricultural Research Station, Virginia State UniversityPetersburg, VA, USA
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Meng Q, Chen Y, Zhang M, Chen Y, Yuan J, Murray SC. Molecular characterization and phylogenetic analysis of ZmMCUs in maize. Biologia (Bratisl) 2015. [DOI: 10.1515/biolog-2015-0077] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Fan K, Shen H, Bibi N, Li F, Yuan S, Wang M, Wang X. Molecular evolution and species-specific expansion of the NAP members in plants. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2015; 57:673-687. [PMID: 25737328 DOI: 10.1111/jipb.12344] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 02/28/2015] [Indexed: 06/04/2023]
Abstract
The NAP (NAC-Like, Activated by AP3 /PI) subfamily is one of the important plant-specific transcription factors, and controls many vital biological processes in plants. In the current study, 197 NAP proteins were identified from 31 vascular plants, but no NAP members were found in eight non-vascular plants. All NAP proteins were phylogenetically classified into two groups (NAP I and NAP II), and the origin time of the NAP I group might be relatively later than that of the NAP II group. Furthermore, species-specific gene duplications, caused by segmental duplication events, resulted in the expansion of the NAP subfamily after species-divergence. Different groups have different expansion rates, and the NAP group preference was found during the expansion in plants. Moreover, the expansion of NAP proteins may be related to the gain and loss of introns. Besides, functional divergence was limited after the gene duplication. Abscisic acid (ABA) might play an important role in leaf senescence, which is regulated by NAP subfamily. These results could lay an important foundation for expansion and evolutionary analysis of NAP subfamily in plants.
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Affiliation(s)
- Kai Fan
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Hao Shen
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Noreen Bibi
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Feng Li
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Shuna Yuan
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Ming Wang
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Xuede Wang
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
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Fan K, Bibi N, Gan S, Li F, Yuan S, Ni M, Wang M, Shen H, Wang X. A novel NAP member GhNAP is involved in leaf senescence in Gossypium hirsutum. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:4669-82. [PMID: 25991739 PMCID: PMC4507772 DOI: 10.1093/jxb/erv240] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Premature leaf senescence has a negative influence on the yield and quality of cotton, and several genes have been found to regulate leaf senescence. Howeer, many underlying transcription factors are yet to be identified. In this study, a NAP-like transcription factor (GhNAP) was isolated from Gossypium hirsutum. GhNAP has the typical NAC structure and a conserved novel subdomain in its divergent transcription activation region (TAR). GhNAP was demonstrated to be a nuclear protein, and it showed transcriptional activation activity in yeast. Furthermore, the expression of GhNAP was closely associated with leaf senescence. GhNAP could rescue the delayed-senescence phenotype of the atnap null mutant. Overexpression of GhNAP could cause precocious senescence in Arabidopsis. However, down-regulation of GhNAP delayed leaf senescence in cotton, and affected cotton yield and its fibre quality. Moreover, the expression of GhNAP can be induced by abscisic acid (ABA), and the delayed leaf senescence phenotype in GhNAPi plants might be caused by the decreased ABA level and reduced expression level of ABA-responsive genes. All of the results suggested that GhNAP could regulate the leaf senescence via the ABA-mediated pathways and was further related to the yield and quality in cotton.
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Affiliation(s)
- Kai Fan
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China
| | - Noreen Bibi
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China
| | - Susheng Gan
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853-5904, USA
| | - Feng Li
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China
| | - Shuna Yuan
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China
| | - Mi Ni
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China
| | - Ming Wang
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China
| | - Hao Shen
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China
| | - Xuede Wang
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China
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Fan K, Wang M, Miao Y, Ni M, Bibi N, Yuan S, Li F, Wang X. Molecular evolution and expansion analysis of the NAC transcription factor in Zea mays. PLoS One 2014; 9:e111837. [PMID: 25369196 PMCID: PMC4219692 DOI: 10.1371/journal.pone.0111837] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Accepted: 09/30/2014] [Indexed: 11/18/2022] Open
Abstract
NAC (NAM, ATAF1, 2 and CUC2) family is a plant-specific transcription factor and it controls various plant developmental processes. In the current study, 124 NAC members were identified in Zea mays and were phylogenetically clustered into 13 distinct subfamilies. The whole genome duplication (WGD), especially an additional WGD event, may lead to expanding ZmNAC members. Different subfamily has different expansion rate, and NAC subfamily preference was found during the expansion in maize. Moreover, the duplication events might occur after the divergence of the lineages of Z. mays and S. italica, and segmental duplication seemed to be the dominant pattern for the gene duplication in maize. Furthermore, the expansion of ZmNAC members may be also related to gain and loss of introns. Besides, the restriction of functional divergence was discovered after most of the gene duplication events. These results could provide novel insights into molecular evolution and expansion analysis of NAC family in maize, and advance the NAC researches in other plants, especially polyploid plants.
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Affiliation(s)
- Kai Fan
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, P.R. China
| | - Ming Wang
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, P.R. China
| | - Ying Miao
- Center for Molecular Cell and Systems Biology, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, P.R. China
| | - Mi Ni
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, P.R. China
| | - Noreen Bibi
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, P.R. China
| | - Shuna Yuan
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, P.R. China
| | - Feng Li
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, P.R. China
| | - Xuede Wang
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, P.R. China
- * E-mail:
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28
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Thu NBA, Hoang XLT, Doan H, Nguyen TH, Bui D, Thao NP, Tran LSP. Differential expression analysis of a subset of GmNAC genes in shoots of two contrasting drought-responsive soybean cultivars DT51 and MTD720 under normal and drought conditions. Mol Biol Rep 2014; 41:5563-9. [PMID: 24985975 DOI: 10.1007/s11033-014-3507-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 06/19/2014] [Indexed: 10/25/2022]
Abstract
NAC transcription factors are known to be involved in regulation of plant responses to drought stress. In this study, the expression of 23 drought-responsive GmNAC genes was assessed in the shoot tissues of DT51 and MTD720, the two soybean varieties with contrasting drought-responsive phenotypes, by real-time quantitative PCR (RT-qPCR) under normal and drought conditions. Results indicated that expression profile of GmNAC genes was genotype-dependent, and six GmNACs (GmNAC019, 043, 062, 085, 095 and 101) had higher transcript levels in the shoots of the drought-tolerant DT51 in comparison with the drought-sensitive MTD720 under drought. Our study suggests a positive correlation between the higher drought tolerance degree of DT51 versus MTD720 and the up-regulation of at least these six drought-responsive GmNACs in the shoot tissues. Furthermore, on the basis of our analysis, three genes, GmNAC043, 085 and 101, were identified as promising candidates for development of drought-tolerant soybean cultivars by genetic engineering.
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Affiliation(s)
- Nguyen Binh Anh Thu
- School of Biotechnology, International University, Vietnam National University HCMC, Block 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Vietnam
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Thao NP, Thu NBA, Hoang XLT, Van Ha C, Tran LSP. Differential expression analysis of a subset of drought-responsive GmNAC genes in two soybean cultivars differing in drought tolerance. Int J Mol Sci 2013; 14:23828-41. [PMID: 24322442 PMCID: PMC3876080 DOI: 10.3390/ijms141223828] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 11/20/2013] [Accepted: 11/20/2013] [Indexed: 12/26/2022] Open
Abstract
The plant-specific NAC transcription factors play important roles in plant response to drought stress. Here, we have compared the expression levels of a subset of GmNAC genes in drought-tolerant DT51 and drought-sensitive MTD720 under both normal and drought stress conditions aimed at identifying correlation between GmNAC expression levels and drought tolerance degree, as well as potential GmNAC candidates for genetic engineering. The expression of 23 selected dehydration-responsive GmNACs was assessed in both stressed and unstressed root tissues of DT51 and MTD720 using real-time quantitative PCR. The results indicated that expression of GmNACs was genotype-dependent. Seven and 13 of 23 tested GmNACs showed higher expression levels in roots of DT51 in comparison with MTD720 under normal and drought stress conditions, respectively, whereas none of them displayed lower transcript levels under any conditions. This finding suggests that the higher drought tolerance of DT51 might be positively correlated with the higher induction of the GmNAC genes during water deficit. The drought-inducible GmNAC011 needs to be mentioned as its transcript accumulation was more than 76-fold higher in drought-stressed DT51 roots relative to MTD720 roots. Additionally, among the GmNAC genes examined, GmNAC085, 092, 095, 101 and 109 were not only drought-inducible but also more highly up-regulated in DT51 roots than in that of MTD720 under both treatment conditions. These data together suggest that GmNAC011, 085, 092, 095, 101 and 109 might be promising candidates for improvement of drought tolerance in soybean by biotechnological approaches.
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Affiliation(s)
- Nguyen Phuong Thao
- School of Biotechnology, International University, Vietnam National University HCMC, Quarter 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh 70000, Vietnam; E-Mails: (N.B.A.T.); (X.L.T.H.)
| | - Nguyen Binh Anh Thu
- School of Biotechnology, International University, Vietnam National University HCMC, Quarter 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh 70000, Vietnam; E-Mails: (N.B.A.T.); (X.L.T.H.)
| | - Xuan Lan Thi Hoang
- School of Biotechnology, International University, Vietnam National University HCMC, Quarter 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh 70000, Vietnam; E-Mails: (N.B.A.T.); (X.L.T.H.)
| | - Chien Van Ha
- Signaling Pathway Research Unit, RIKEN Center for Sustainable Resource Science, 1-7-22, Suehiro-cho, Tsurumi, Yokohama 230-0045, Japan; E-Mail:
- National Key Laboratory of Plant Cell Biotechnology, Agricultural Genetics Institute, Vietnamese Academy of Agricultural Science, Pham Van Dong Street, Hanoi 10000, Vietnam
- Post-Graduate Program, Vietnamese Academy of Agricultural Science, Thanhtri, Hanoi 10000, Vietnam
| | - Lam-Son Phan Tran
- Signaling Pathway Research Unit, RIKEN Center for Sustainable Resource Science, 1-7-22, Suehiro-cho, Tsurumi, Yokohama 230-0045, Japan; E-Mail:
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Kudapa H, Ramalingam A, Nayakoti S, Chen X, Zhuang WJ, Liang X, Kahl G, Edwards D, Varshney RK. Functional genomics to study stress responses in crop legumes: progress and prospects. FUNCTIONAL PLANT BIOLOGY : FPB 2013; 40:1221-1233. [PMID: 32481190 DOI: 10.1071/fp13191] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Accepted: 08/22/2013] [Indexed: 06/11/2023]
Abstract
Legumes are important food crops worldwide, contributing to more than 33% of human dietary protein. The production of crop legumes is frequently impacted by abiotic and biotic stresses. It is therefore important to identify genes conferring resistance to biotic stresses and tolerance to abiotic stresses that can be used to both understand molecular mechanisms of plant response to the environment and to accelerate crop improvement. Recent advances in genomics offer a range of approaches such as the sequencing of genomes and transcriptomes, gene expression microarray as well as RNA-seq based gene expression profiling, and map-based cloning for the identification and isolation of biotic and abiotic stress-responsive genes in several crop legumes. These candidate stress associated genes should provide insights into the molecular mechanisms of stress tolerance and ultimately help to develop legume varieties with improved stress tolerance and productivity under adverse conditions. This review provides an overview on recent advances in the functional genomics of crop legumes that includes the discovery as well as validation of candidate genes.
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Affiliation(s)
- Himabindu Kudapa
- International Crops Research Institute for the Semiarid Tropics (ICRISAT), Patancheru 502324, India
| | - Abirami Ramalingam
- International Crops Research Institute for the Semiarid Tropics (ICRISAT), Patancheru 502324, India
| | - Swapna Nayakoti
- International Crops Research Institute for the Semiarid Tropics (ICRISAT), Patancheru 502324, India
| | - Xiaoping Chen
- Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Wei-Jian Zhuang
- Fujian Provincial Key Laboratory of Plant Molecular and Cell Biology, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China
| | - Xuanqiang Liang
- Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Guenter Kahl
- Goethe University Frankfurt am Main, Institute for Molecular BioSciences, Max-von-Laue-Str. 9, Frankfurt am Main 60438, Germany
| | - David Edwards
- School of Agriculture and Food Sciences, University of Queensland, Brisbane, St Lucia, Qld 4072, Australia
| | - Rajeev K Varshney
- International Crops Research Institute for the Semiarid Tropics (ICRISAT), Patancheru 502324, India
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Jin H, Xu G, Meng Q, Huang F, Yu D. GmNAC5, a NAC transcription factor, is a transient response regulator induced by abiotic stress in soybean. ScientificWorldJournal 2013; 2013:768972. [PMID: 23983646 PMCID: PMC3745988 DOI: 10.1155/2013/768972] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Accepted: 06/24/2013] [Indexed: 11/17/2022] Open
Abstract
GmNAC5 is a member of NAM subfamily belonging to NAC transcription factors in soybean (Glycine max (L.) Merr.). Studies on NAC transcription factors have shown that this family functioned in the regulation of shoot apical meristem (SAM), hormone signalling, and stress responses. In this study, we examined the expression levels of GmNAC5. GmNAC5 was highly expressed in the roots and immature seeds, especially strongly in immature seeds of 40 days after flowering. In addition, we found that GmNAC5 was induced by mechanical wounding, high salinity, and cold treatments but was not induced by abscisic acid (ABA). The subcellular localization assay suggested that GmNAC5 was targeted at nucleus. Together, it was suggested that GmNAC5 might be involved in seed development and abiotic stress responses in soybean.
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Affiliation(s)
- Hangxia Jin
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing 210095, China
| | - Guangli Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing 210095, China
| | - Qingchang Meng
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing 210095, China
| | - Fang Huang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing 210095, China
| | - Deyue Yu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing 210095, China
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Abstract
Soybean (Glycine max) is one of the most important crops in legume family. Soybean and soybean-based products are also considered as popular food for human and animal husbandry. With its high oil content, soybean has become a potential resource for the production of renewable fuel. However, soybean is considered one of the most drought-sensitive crops, with approximately 40% reduction of the yield in the worst years. Recent research progresses in elucidation of biochemical, morphological and physiological responses as well as molecular mechanisms of plant adaptation to drought stress in model plants have provided a solid foundation for translational genomics of soybean toward drought tolerance. In this review, we will summarize the recent advances in development of drought-tolerant soybean cultivars by gene transfer.
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Affiliation(s)
- Nguyen Phuong Thao
- International University, Vietnam National University-HCMC, St block 6, Linh Trung ward, Thu Duc district, HCM city, Vietnam
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Li D, Wang J, Peng S, Zhu G, Lǚ F. Molecular cloning and characterization of two novel NAC genes from Mikania micrantha (Asteraceae). GENETICS AND MOLECULAR RESEARCH 2012; 11:4383-401. [DOI: 10.4238/2012.september.19.3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Le DT, Nishiyama R, Watanabe Y, Mochida K, Yamaguchi-Shinozaki K, Shinozaki K, Tran LSP. Genome-wide survey and expression analysis of the plant-specific NAC transcription factor family in soybean during development and dehydration stress. DNA Res 2011; 18:263-76. [PMID: 21685489 PMCID: PMC3158466 DOI: 10.1093/dnares/dsr015] [Citation(s) in RCA: 246] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2011] [Accepted: 05/24/2011] [Indexed: 01/17/2023] Open
Abstract
Plant-specific NAC transcription factors (TFs) play important roles in regulating diverse biological processes, including development, senescence, growth, cell division and responses to environmental stress stimuli. Within the soybean genome, we identified 152 full-length GmNAC TFs, including 11 membrane-bound members. In silico analysis of the GmNACs, together with their Arabidopsis and rice counterparts, revealed similar NAC architecture. Next, we explored the soybean Affymetrix array and Illumina transcriptome sequence data to analyse tissue-specific expression profiles of GmNAC genes. Phylogenetic analysis using stress-related NAC TFs from Arabidopsis and rice as seeding sequences identified 58 of the 152 GmNACs as putative stress-responsive genes, including eight previously reported dehydration-responsive GmNACs. We could design gene-specific primers for quantitative real-time PCR verification of 38 out of 50 newly predicted stress-related genes. Twenty-five and six GmNACs were found to be induced and repressed 2-fold or more, respectively, in soybean roots and/or shoots in response to dehydration. GmNAC085, whose amino acid sequence was 39%; identical to that of well-known SNAC1/ONAC2, was the most induced gene upon dehydration, showing 390-fold and 20-fold induction in shoots and roots, respectively. Our systematic analysis has identified excellent tissue-specific and/or dehydration-responsive candidate GmNAC genes for in-depth characterization and future development of improved drought-tolerant transgenic soybeans.
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Affiliation(s)
- Dung Tien Le
- Signaling Pathway Research Unit, Plant Science Center, RIKEN Yokohama Institute, 1-7-22, Suehiro-cho, Tsurumi, Yokohama 230-0045, Japan
- Agricultural Genetics Institute, Vietnamese Academy of Agricultural Science, Pham-Van-Dong Str., Hanoi, Vietnam
| | - Rie Nishiyama
- Signaling Pathway Research Unit, Plant Science Center, RIKEN Yokohama Institute, 1-7-22, Suehiro-cho, Tsurumi, Yokohama 230-0045, Japan
| | - Yasuko Watanabe
- Signaling Pathway Research Unit, Plant Science Center, RIKEN Yokohama Institute, 1-7-22, Suehiro-cho, Tsurumi, Yokohama 230-0045, Japan
| | - Keiichi Mochida
- Gene Discovery Research Group, Plant Science Center, RIKEN Yokohama Institute, 1-7-22, Suehiro-cho, Tsurumi, Yokohama 230-0045, Japan
| | | | - Kazuo Shinozaki
- Gene Discovery Research Group, Plant Science Center, RIKEN Yokohama Institute, 1-7-22, Suehiro-cho, Tsurumi, Yokohama 230-0045, Japan
| | - Lam-Son Phan Tran
- Signaling Pathway Research Unit, Plant Science Center, RIKEN Yokohama Institute, 1-7-22, Suehiro-cho, Tsurumi, Yokohama 230-0045, Japan
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Kato H, Motomura T, Komeda Y, Saito T, Kato A. Overexpression of the NAC transcription factor family gene ANAC036 results in a dwarf phenotype in Arabidopsis thaliana. JOURNAL OF PLANT PHYSIOLOGY 2010; 167:571-7. [PMID: 19962211 DOI: 10.1016/j.jplph.2009.11.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2009] [Revised: 11/07/2009] [Accepted: 11/07/2009] [Indexed: 05/02/2023]
Abstract
NAC proteins comprise one of the largest families of transcription factors in the plant genome. They are known to be involved in various aspects of plant development, but the functions of most of them have not yet been determined. ANAC036, a member of the Arabidopsis NAC transcription factor family, contains unique sequences that are conserved among various NAC proteins found in other plant species. Expression analysis of the ANAC036 gene indicated that this gene was strongly expressed in leaves. Transgenic plants overexpressing the ANAC036 gene showed a semidwarf phenotype. The lengths of leaf blades, petioles and stems of these plants were smaller than those in wild-type plants. Microscopy revealed that cell sizes in leaves and stems of these plants were smaller than those in wild-type plants. These findings suggested that ANAC036 and its orthologues are involved in the growth of leaf cells.
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Affiliation(s)
- Hiroaki Kato
- Department of Biological Sciences, Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan
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36
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He QL, Cui SJ, Gu JL, Zhang H, Wang MX, Zhou Y, Zhang L, Huang MR. Analysis of floral transcription factors from Lycoris longituba. Genomics 2010; 96:119-27. [PMID: 20406677 DOI: 10.1016/j.ygeno.2010.04.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2009] [Revised: 04/09/2010] [Accepted: 04/12/2010] [Indexed: 10/19/2022]
Abstract
Transcription factors (TFs) are proteins that bind to specific promoter regions of their target genes and regulate gene transcription. Many of these factors have been found to influence flowering. Lycoris longituba exhibits a great deal of diversity in flower color and flower form, making it a suitable model for the study of floral development. We have identified 338 putative TFs from more than thirty thousand ESTs sequenced from the floral tissue of L. longituba, and validated them using real-time RT-PCR. Fifty-one of the TFs were recognized as being potentially flower-specific, and the expression patterns of some of them during six flowering phases have been elucidated. Homolog annotation and phylogenetic analysis revealed that some TFs that belong to several TF families, such as MADS, MYB-related, NAC, and ABI3-VP1, were suggested to play important roles in the flowering process. Our dataset may be used to identify priority target TF genes for further study.
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Characterization of a novel wheat NAC transcription factor gene involved in defense response against stripe rust pathogen infection and abiotic stresses. Mol Biol Rep 2010; 37:3703-12. [PMID: 20213512 DOI: 10.1007/s11033-010-0023-4] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2009] [Accepted: 02/17/2010] [Indexed: 10/19/2022]
Abstract
Proteins encoded by the NAC gene family constitute one of the largest plant-specific transcription factors, which have been identified to play many important roles in both abiotic and biotic stress adaptation, as well as in plant development regulation. In the current paper, a full-length cDNA sequence of a novel wheat NAC gene, designated as TaNAC4, was isolated using in silico cloning and the reverse transcription PCR (RT-PCR) methods. TaNAC4 sharing high homology with rice OsNAC4 gene was predicted to encode a protein of 308 amino acid residues, which contained a plant-specific NAC domain in the N-terminus. Transient expression analysis indicated that the deduced TaNAC4 protein was localized in the nucleus of onion epidemical cells. Yeast one-hybrid assay revealed that the C-terminal region of the TaNAC4 protein had transcriptional activity. The expression of TaNAC4 was largely higher in the wheat seedling roots, than that in leaves and stems. TaNAC4 transcript in wheat leaves was induced by the infection of strip rust pathogen, and also by exogenous applied methyl jasmonate (MeJA), ABA and ethylene. However, salicylic acid (SA) had no obvious effect on TaNAC4 expression. Environmental stimuli, including high salinity, wounding, and low-temperature also induced TaNAC4 expression. These results indicate that this novel TaNAC4 gene functions as a transcriptional activator involved in wheat response to biotic and abiotic stresses.
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38
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Pinheiro GL, Marques CS, Costa MDBL, Reis PAB, Alves MS, Carvalho CM, Fietto LG, Fontes EPB. Complete inventory of soybean NAC transcription factors: sequence conservation and expression analysis uncover their distinct roles in stress response. Gene 2009; 444:10-23. [PMID: 19497355 DOI: 10.1016/j.gene.2009.05.012] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2009] [Revised: 05/26/2009] [Accepted: 05/27/2009] [Indexed: 10/20/2022]
Abstract
We performed an inventory of soybean NAC transcription factors, in which 101 NAC domain-containing proteins were annotated into 15 different subgroups, showing a clear relationship between structure and function. The six previously described GmNAC proteins (GmNAC1 to GmNAC6) were located in the nucleus and a transactivation assay in yeast confirmed that GmNAC2, GmNAC3, GmNAC4 and GmNAC5 function as transactivators. We also analyzed the expression of the six NAC genes in response to a variety of stress conditions. GmNAC2, GmNAC3 and GmNAC4 were strongly induced by osmotic stress. GmNAC3 and GmNAC4 were also induced by ABA, JA and salinity but differed in their response to cold. Consistent with an involvement in cell death programs, the transient expression of GmNAC1, GmNAC5 and GmNAC6 in tobacco leaves resulted in cell death and enhanced expression of senescence markers. Our results indicate that the described soybean NACs are functionally non-redundant transcription factors involved in response to abiotic stresses and in cell death events in soybean.
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Affiliation(s)
- Guilherme L Pinheiro
- Departamento de Bioquímica e Biologia Molecular, Laboratório de Biologia Molecular de Plantas, BIOAGRO, Universidade Federal de Viçosa, 36570.000, Viçosa, Minas Gerais, Brazil
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Manavalan LP, Guttikonda SK, Tran LS, Nguyen HT. Physiological and molecular approaches to improve drought resistance in soybean. PLANT & CELL PHYSIOLOGY 2009; 50:1260-76. [PMID: 19546148 DOI: 10.1093/pcp/pcp082] [Citation(s) in RCA: 198] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
Drought stress is a major constraint to the production and yield stability of soybean [Glycine max (L.) Merr.]. For developing high yielding varieties under drought conditions, the most widely employed criterion has traditionally been direct selection for yield stability over multiple locations. However, this approach is time consuming and labor intensive, because yield is a highly quantitative trait with low heritability, and influenced by differences arising from soil heterogeneity and environmental factors. The alternative strategy of indirect selection using secondary traits has succeeded only in a few crops, due to problems with repeatability and lack of phenotyping strategies, especially for root-related traits. Considerable efforts have been directed towards identifying traits associated with drought resistance in soybean. With the availability of the whole genome sequence, physical maps, genetics and functional genomics tools, integrated approaches using molecular breeding and genetic engineering offer new opportunities for improving drought resistance in soybean. Genetic engineering for drought resistance with candidate genes has been reported in the major food crops, and efforts for developing drought-resistant soybean lines are in progress. The objective of this review is to consolidate the current knowledge of physiology, molecular breeding and functional genomics which may be influential in integrating breeding and genetic engineering approaches for drought resistance in soybean.
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Affiliation(s)
- Lakshmi P Manavalan
- National Center for Soybean Biotechnology and Division of Plant Sciences, University of Missouri, Columbia, MO 65211, USA
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40
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Si Y, Zhang C, Meng S, Dane F. Gene expression changes in response to drought stress in Citrullus colocynthis. PLANT CELL REPORTS 2009; 28:997-1009. [PMID: 19415285 DOI: 10.1007/s00299-009-0703-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2009] [Revised: 04/14/2009] [Accepted: 04/15/2009] [Indexed: 05/24/2023]
Abstract
Citrullus colocynthis (L.) Schrad, closely related to watermelon, is a member of the Cucurbitaceae family. This plant is a drought-tolerant species with a deep root system, widely distributed in the Sahara-Arabian deserts in Africa and the Mediterranean region. cDNA amplified fragment length polymorphism (cDNA-AFLP) was used to study differential gene expression in roots of seedlings in response to a 20% polyethylene glycol-(PEG8000) induced drought stress treatment. Eighteen genes which show similarity to known function genes were confirmed by quantitative relative (RQ) real-time RT-PCR to be differentially regulated. These genes are involved in various abiotic and biotic stress and developmental responses. Dynamic changes with tissue-specific pattern were detected between 0 and 48 h of PEG treatment. In general, the highest induction levels in roots occurred earlier than in shoots, because the highest expression was detected in roots following 4 and 12 h, in shoots following 12 and 48 h of drought. These drought-responsive genes were also affected by the plant hormones abscisic acid (ABA), salicylic acid (SA), or jasmonic acid (JA), indicating an extensive cross-talk between drought and plant hormones. Collectively, these results will be useful to explore the functions of these multiple signal-inducible genes for unveiling the relationship and crosstalk between different signaling pathways.
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Affiliation(s)
- Ying Si
- Department of Horticulture, Auburn University, Auburn, AL, 36849, USA
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41
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Tran LSP, Quach TN, Guttikonda SK, Aldrich DL, Kumar R, Neelakandan A, Valliyodan B, Nguyen HT. Molecular characterization of stress-inducible GmNAC genes in soybean. Mol Genet Genomics 2009; 281:647-64. [PMID: 19277718 DOI: 10.1007/s00438-009-0436-8] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2008] [Accepted: 02/18/2009] [Indexed: 10/21/2022]
Abstract
Drought is detrimental to plant growth and development, and often results in significant losses to the yields of economically important crops such as soybeans (Glycine max L.). NAC transcription factors (TFs), which consist of a large family of plant-specific TFs, have been reported to enhance drought tolerance in a number of plants. In this study, 31 unigenes that contain the complete open reading frames encoding GmNAC proteins were identified and cloned from soybean. Analysis of C-terminal regulatory domain using yeast one-hybrid system indicated that among 31 GmNAC proteins, 28 have transcriptional activation activity. Expression analysis of these GmNAC genes showed that they are differentially expressed in different organs, suggesting that they have diverse functions during plant growth and development. To search for the drought-inducible GmNAC genes, we prescreened and re-confirmed by quantitative real-time PCR analysis that nine GmNAC genes are induced by dehydration stress with differential induction levels in both shoot and root. The expression profiles of these nine GmNAC genes were also examined under other stresses such as high salinity, cold and with abscisic acid hormone treatments. Phylogenetic analysis of the GmNAC proteins with previously reported drought-inducible NAC proteins of Arabidopsis and rice revealed that the nine drought-inducible GmNAC proteins belong to the "stress-inducible" NAC group. The results of this systematic analysis of the GmNAC family will provide novel tools and resources for the development of improved drought tolerant transgenic soybean cultivars.
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Affiliation(s)
- Lam-Son Phan Tran
- Division of Plant Sciences, National Center for Soybean Biotechnology, University of Missouri, Columbia, MO 65211, USA.
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Zhang M, Li K, Zhang C, Gai J, Yu D. Identification and characterization of class 1 DXS gene encoding 1-deoxy-D-xylulose-5-phosphate synthase, the first committed enzyme of the MEP pathway from soybean. Mol Biol Rep 2009; 36:879-87. [PMID: 18437529 DOI: 10.1007/s11033-008-9258-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2008] [Accepted: 04/15/2008] [Indexed: 11/27/2022]
Abstract
1-Deoxy-D-xylulose-5-phosphate synthase (DXS) catalyses the first committed step of the 2C-methyl-D-erythritol-4-phosphate (MEP) pathway, which is an alternative isoprenoids biosynthetic route that has been recently discovered. In this work, a DXS1-like cDNA (GmDXS1) was isolated from soybean. The full-length cDNA of GmDXS1 encoded 708 amino acid residues with a predicted molecular mass of 76.4 KD. Sequence alignment showed that GmDXS1 had high homology to known DXS proteins from other plant species and contained the conserved N-terminal plastid transit peptide, the N-terminal thiamine binding domain and pyridine binding DRAG domain. Phylogenetic analysis indicated that GmDXS1 belonged to the plant DXS1 cluster. Southern blot analysis indicated that a single copy of GmDXS1 gene existed in soybean genome. Tissue expression analysis revealed that GmDXS1 expressed in all photosynthetic tissues except pod walls and roots. Green fluorescence analysis with the fusion protein 35S:GmDXS1:GFP suggested that GmDXS1 was localized in plastid. The relatively higher photosynthetic pigment content in transgenic tobacco leaves compared to the control implied that GmDXS1 catalyzed the first potential regulatory step in photosynthetic pigment biosynthesis via the MEP pathway.
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Affiliation(s)
- Man Zhang
- National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Weigang 1, Nanjing, People's Republic of China
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Liu ZJ, Shao FX, Tang GY, Shan L, Bi YP. [Cloning and characterization of a transcription factor ZmNAC1 in maize (Zea mays)]. YI CHUAN = HEREDITAS 2009; 31:199-205. [PMID: 19273429 DOI: 10.3724/sp.j.1005.2009.00199] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
NAC transcription factors are a family of functionally diverse proteins. They are unique to plants and play an important role in regulation of plant growth and development, hormone regulation and responses to various stresses. A cDNA encoding the NAC-like gene homologue was isolated from maize (Zea mays L.) by RT-PCR and designated ZmNAC1 (GenBank Accession No. EU224278). Sequence analysis showed that cDNA of ZmNAC1 was 1,029 bp long and contained a single open reading frame (ORF, 26 to approximately 907 bp). The predicted ZmNAC1 protein has 293 amino acids with an estimated molecular mass of 32.3 kDa and an isoelectric point of 8.65. RT-PCR analysis showed that the expression of ZmNAC1 was induced by low temperature, PEG, salt, and ABA, respectively. These results suggest that ZmNAC1 may play important roles in biotic and abiotic resistance pathways. This is the first NAC-like gene reported in maize.
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Affiliation(s)
- Zhan-Ji Liu
- Hi-Tech Research Centre, Shandong Academy of Agricultural Sciences; Key Laboratory for Genetic Improvement of Crop, Animal and Poultry of Shandong Province, Jinan 250100, China.
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Abstract
Soybean is an important cash crop and its productivity is significantly hampered by salt stress. High salt imposes negative impacts on growth, nodulation, agronomy traits, seed quality and quantity, and thus reduces the yield of soybean. To cope with salt stress, soybean has developed several tolerance mechanisms, including: (i) maintenance of ion homeostasis; (ii) adjustment in response to osmotic stress; (iii) restoration of osmotic balance; and (iv) other metabolic and structural adaptations. The regulatory network for abiotic stress responses in higher plants has been studied extensively in model plants such as Arabidopsis thaliana. Some homologous components involved in salt stress responses have been identified in soybean. In this review, we tried to integrate the relevant works on soybean and proposes a working model to describe its salt stress responses at the molecular level.
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Affiliation(s)
- Tsui-Hung Phang
- Department of Biology, Chinese University of Hong Kong, Shatin, Hong Kong, China
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Zhang C, Meng Q, Gai J, Yu D. Cloning and functional characterization of an O-acetylserine(thiol)lyase-encoding gene in wild soybean (Glycine soja). Mol Biol Rep 2007; 35:527-34. [PMID: 17611817 DOI: 10.1007/s11033-007-9118-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2007] [Accepted: 06/18/2007] [Indexed: 11/26/2022]
Abstract
The terminal step of soybean cysteine synthesis is catalyzed by O-acetylserine(thiol)lyase (OAS-TL, EC 2.5.1.47). In this study, we isolated and characterized an OAS-TL gene from a wild soybean material (designated as GsOAS-TL1). GsOAS-TL1 cDNA sequence showed strict conservation at both nucleotide and amino acid levels compared with that from cultivated soybean. Genomic structure analysis of GsOAS-TL1 indicated that it contained 10 exons and 9 introns in the coding region with conserved exon sizes and intron locations compared with Arabidopsis thaliana OAS-TL-like genes. Among the complete GsOAS-TL1 cDNA and three part-deletion fragments, only expression of the full-length cDNA could rescue the NK3 cys(-) Escherichia coli auxotroph, which was coherent with the assayed enzyme activity of purified fusion proteins. For RT-PCR analysis in different wild soybean tissues, GsOAS-TL1 showed lower expression in roots and developing seeds, whereas total OAS-TL activity of corresponding tissues showed significantly higher level in seeds than other tissues. To our knowledge, this is the first report on cloning and characterization of an OAS-TL gene from wild soybean. Our results are informative to further elucidate the function and evolution of OAS-TL in soybean.
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Affiliation(s)
- Chunhong Zhang
- National Center for Soybean Improvement, National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, PR China
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