1
|
Zhang S, Guo Y, Zhang P, Ai J, Wang Y, Wang F. Functional characterization of VrNAC15 for drought resistance in mung beans. Gene 2024; 926:148621. [PMID: 38821326 DOI: 10.1016/j.gene.2024.148621] [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: 01/06/2024] [Revised: 05/16/2024] [Accepted: 05/28/2024] [Indexed: 06/02/2024]
Abstract
Drought stress has become an important limiting factor in mung bean production, and NAC(NAM/ATAF/CUC) transcription factors are crucial for plant growth under stress conditions, so it is important to study the regulatory role of NAC transcription factors in mung bean under drought stress. In this investigation, VrNAC15, along with its promoter, was cloned, and its structure was meticulously analyzed. Using qPCR, we examined the tissue-specific expression patterns of VrNAC15, particularly under drought stress and ABA exposure. Additionally, We performed ectopic expression of VrNAC15 in Arabidopsis to assess its function.. Gene sequence analysis revealed that VrNAC15 has a total length of 1014 bp, encoding 337 amino acids. It contains a NAM domain, localizes within the nucleus, and exhibits transcriptional activation. Promoter analysis of VrNAC15 identified essential core promoter elements and cis-acting elements related to abscisic acid, methyl jasmonate, gibberellin, adversity stress, light, and metabolism. Expression analysis demonstrated the concentration of VrNAC15 in leaves, with significant alterations following ABA and drought treatments in mung beans. Cluster analysis revealed that VrNAC15 may enhanced drought tolerance in transgenic plants through its expression. Transgenic experiments supported these findings, showing that heterologous expression of VrNAC15 led to enhanced antioxidant and osmotic adjustment capabilities in Arabidopsis plants. This resulted in the maintenance of cell membrane structural integrity during drought stress and normal physiological and biochemical metabolic reactions within cells. This research provides valuable insights into the structural and functional characteristics of the VrNAC15, setting the stage for future endeavors in molecular breeding for improved drought resistance in mung beans.
Collapse
Affiliation(s)
- Siyu Zhang
- School of Life Sciences, Yulin University,Yulin 719000,China
| | - Yaning Guo
- School of Life Sciences, Yulin University,Yulin 719000,China
| | - Panpan Zhang
- School of Life Sciences, Yulin University,Yulin 719000,China
| | - Jing Ai
- School of Life Sciences, Yulin University,Yulin 719000,China
| | - Yue Wang
- School of Life Sciences, Yulin University,Yulin 719000,China
| | - Fugang Wang
- School of Life Sciences, Yulin University,Yulin 719000,China.
| |
Collapse
|
2
|
Luo X, Jiang X, Schmitt V, Kulkarni SR, Tran HC, Kacprzak SM, Van Breusegem F, Van Aken O, Vandepoele K, De Clercq I. Arabidopsis transcription factor ANAC102 predominantly expresses a nuclear protein and acts as a negative regulator of methyl viologen-induced oxidative stress responses. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:4655-4670. [PMID: 38812358 PMCID: PMC7616362 DOI: 10.1093/jxb/erae235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 05/29/2024] [Indexed: 05/31/2024]
Abstract
Plants, being sessile organisms, constantly need to respond to environmental stresses, often leading to the accumulation of reactive oxygen species (ROS). While ROS can be harmful, they also act as second messengers guiding plant growth and stress responses. Because chloroplasts are sensitive to environmental changes and are both a source and a target of ROS during stress conditions, they are important in conveying environmental changes to the nucleus, where acclimation responses are coordinated to maintain organellar and overall cellular homeostasis. ANAC102 has previously been established as a regulator of β-cyclocitral-mediated chloroplast-to-nucleus signaling, protecting plants against photooxidative stress. However, debates persist about where ANAC102 is located-in chloroplasts or in the nucleus. Our study, utilizing the genomic ANAC102 sequence driven by its native promoter, establishes ANAC102 primarily as a nuclear protein, lacking a complete N-terminal chloroplast-targeting peptide. Moreover, our research reveals the sensitivity of plants overexpressing ANAC102 to severe superoxide-induced chloroplast oxidative stress. Transcriptome analysis unraveled a dual role of ANAC102 in negatively and positively regulating genome-wide transcriptional responses to chloroplast oxidative stress. Through the integration of published data and our own study, we constructed a comprehensive transcriptional network, which suggests that ANAC102 exerts direct and indirect control over transcriptional responses through downstream transcription factor networks, providing deeper insights into the ANAC102-mediated regulatory landscape during oxidative stress.
Collapse
Affiliation(s)
- Xiaopeng Luo
- Ghent University, Department of Plant Biotechnology and Bioinformatics, 9052Ghent, Belgium
- VIB Center for Plant Systems Biology, 9052Ghent, Belgium
| | - Xinqiang Jiang
- Ghent University, Department of Plant Biotechnology and Bioinformatics, 9052Ghent, Belgium
- VIB Center for Plant Systems Biology, 9052Ghent, Belgium
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Vivian Schmitt
- Department of Biology, Lund University, Lund223 62, Sweden
| | - Shubhada R Kulkarni
- Ghent University, Department of Plant Biotechnology and Bioinformatics, 9052Ghent, Belgium
- VIB Center for Plant Systems Biology, 9052Ghent, Belgium
- European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany; Division of Vascular Oncology and Metastasis, German Cancer Research Center Heidelberg (DKFZ-ZMBH Alliance), Heidelberg, Germany
| | - Huy Cuong Tran
- Department of Biology, Lund University, Lund223 62, Sweden
| | | | - Frank Van Breusegem
- Ghent University, Department of Plant Biotechnology and Bioinformatics, 9052Ghent, Belgium
- VIB Center for Plant Systems Biology, 9052Ghent, Belgium
| | | | - Klaas Vandepoele
- Ghent University, Department of Plant Biotechnology and Bioinformatics, 9052Ghent, Belgium
- VIB Center for Plant Systems Biology, 9052Ghent, Belgium
- VIB Center for AI & Computational Biology, VIB, Ghent, Belgium
| | - Inge De Clercq
- Ghent University, Department of Plant Biotechnology and Bioinformatics, 9052Ghent, Belgium
- VIB Center for Plant Systems Biology, 9052Ghent, Belgium
| |
Collapse
|
3
|
Wang H, Qin L, Feng C, Wu M, Zhong H, Liu J, Wu Q, Que Y. Pathogen resistance was negatively regulated by the NAC transcription factor ScATAF1 in sugarcane. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 213:108828. [PMID: 38896914 DOI: 10.1016/j.plaphy.2024.108828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 05/15/2024] [Accepted: 06/10/2024] [Indexed: 06/21/2024]
Abstract
The NAC (NAM, ATAF, and CUC) is one of the largest transcription factor gene families in plants. In this study, 180, 141, and 131 NAC family members were identified from Saccharum complex, including S. officinarum, S. spontaneum, and Erianthus rufipilus. The Ka/Ks ratio of ATAF subfamily was all less than 1. Besides, 52 ATAF members from 12 representative plants were divided into three clades and there was only a significant expansion in maize. Surprisingly, ABA and JA cis-elements were abundant in hormonal response factor, followed by transcriptional regulator and abiotic stressor. The ATAF subfamily was differentially expressed in various tissues, under low temperature and smut pathogen treatments. Further, the ScATAF1 gene, with high expression in leaves, stem epidermis, and buds, was isolated. The encoded protein, lack of self-activation activity, was situated in the cell nucleus. Moreover, SA and JA stresses down-regulated the expression of this gene, while ABA, NaCl, and 4°C treatments led to its up-regulation. Interestingly, its expression in the smut susceptible sugarcane cultivars was much higher than the smut resistant ones. Notably, the colors presented slight brown in tobacco transiently overexpressing ScATAF1 at 1 d after DAB staining, while the symptoms were more obvious at 3 d after inoculation with Ralstonia solanacearum, with ROS, JA, and SA signaling pathway genes significantly up-regulated. We thus speculated ScATAF1 gene could negatively mediate hypersensitive reactions and produce ROS by JA and SA signaling pathways. These findings lay the groundwork for in-depth investigation on the biological roles of ATAF subfamily in sugarcane.
Collapse
Affiliation(s)
- Hengbo Wang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Agriculture, Instrumental Analysis Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China; National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Sanya, Haikou, 572024/571101, Hainan, China
| | - Liqian Qin
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Agriculture, Instrumental Analysis Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Chunyan Feng
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Agriculture, Instrumental Analysis Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Mingxing Wu
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Agriculture, Instrumental Analysis Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Hui Zhong
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Agriculture, Instrumental Analysis Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Junhong Liu
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Agriculture, Instrumental Analysis Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Qibin Wu
- National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Sanya, Haikou, 572024/571101, Hainan, China
| | - Youxiong Que
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Agriculture, Instrumental Analysis Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China; National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Sanya, Haikou, 572024/571101, Hainan, China.
| |
Collapse
|
4
|
Han K, Zhao Y, Liu J, Tian Y, El-Kassaby YA, Qi Y, Ke M, Sun Y, Li Y. Genome-wide investigation and analysis of NAC transcription factor family in Populus tomentosa and expression analysis under salt stress. PLANT BIOLOGY (STUTTGART, GERMANY) 2024; 26:764-776. [PMID: 38859551 DOI: 10.1111/plb.13657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 04/20/2024] [Indexed: 06/12/2024]
Abstract
The NAC transcription factor family is one of the largest families of TFs in plants, and members of NAC gene family play important roles in plant growth and stress response. Recent release of the haplotype-resolved genome assembly of P. tomentosa provide a platform for NAC protein genome-wide analysis. A total of 270 NAC genes were identified and a comprehensive overview of the PtoNAC gene family is presented, including gene promoter, structure and conserved motif analyses, chromosome localization and collinearity analysis, protein phylogeny, expression pattern, and interaction analysis. The results indicate that protein length, molecular weight, and theoretical isoelectric points of the NAC TF family vary, while gene structure and motif are relatively conserved. Chromosome mapping analysis showed that the P. tomentosa NAC genes are unevenly distributed on 19 chromosomes. The interchromosomal evolutionary results indicate 12 pairs of tandem and 280 segmental duplications. Segmental duplication is possibly related to amplification of P. tomentosa NAC gene family. Expression patterns of 35 PtoNAC genes from P. tomentosa subgroup were analysed under high salinity, and seven NAC genes were induced by this treatment. Promoter and protein interaction network analyses showed that PtoNAC genes are closely associated with growth, development, and abiotic and biotic stress, especially salt stress. These results provide a meaningful reference for follow-up studies of the functional characteristics of NAC genes in the mechanism of stress response and their potential roles in development of P. tomentosa.
Collapse
Affiliation(s)
- K Han
- National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Engineering Technology Research Center of Black Locust of National Forestry and Grassland Administration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Y Zhao
- National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Engineering Technology Research Center of Black Locust of National Forestry and Grassland Administration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - J Liu
- National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Engineering Technology Research Center of Black Locust of National Forestry and Grassland Administration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Y Tian
- National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Engineering Technology Research Center of Black Locust of National Forestry and Grassland Administration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Y A El-Kassaby
- Department of Forest and Conservation Sciences Faculty of Forestry, The University of British Columbia, Vancouver, BC, Canada
| | - Y Qi
- National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Engineering Technology Research Center of Black Locust of National Forestry and Grassland Administration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - M Ke
- National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Engineering Technology Research Center of Black Locust of National Forestry and Grassland Administration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Y Sun
- National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Engineering Technology Research Center of Black Locust of National Forestry and Grassland Administration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Y Li
- National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Engineering Technology Research Center of Black Locust of National Forestry and Grassland Administration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| |
Collapse
|
5
|
Zhang H, Huang Y. Genome-wide identification and characterization of greenbug-inducible NAC transcription factors in sorghum. Mol Biol Rep 2024; 51:207. [PMID: 38270755 DOI: 10.1007/s11033-023-09158-x] [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: 09/28/2023] [Accepted: 12/13/2023] [Indexed: 01/26/2024]
Abstract
BACKGROUND Sorghum (Sorghum bicolor) is an important cereal crop grown worldwide because of its multipurpose uses such as food, forage, and bioenergy feedstock and its wide range of adaption even in marginal environments. Greenbug can cause severe damage to sorghum plants and yield loss. Plant NAC transcription factors (TFs) have been reported to have diverse functions in plant development and plant defense but has not been studied in sorghum yet. METHODS AND RESULTS In this study, a comprehensive analysis of the sorghum NAC (SbNAC) gene family was conducted through genome-wide analysis. A total of 112 NAC genes has been identified in the sorghum genome. These SbNAC genes are phylogenetically clustered into 15 distinct subfamilies and unevenly distribute in clusters at the telomeric ends of each chromosome. Twelve pairs of SbNAC genes are possibly involved in the segmental duplication among nine chromosomes except chromosome 10. Structure analysis showed the diverse structures with a highly variable number of exons in the SbNAC genes. Furthermore, most of the SbNAC genes showed specific temporal and spatial expression patterns according to the results of RNA-seq analysis, suggesting their diverse functions during sorghum growth and development. We have also identified nine greenbug-inducible SbNAC genes by comparing the expression profiles between two sorghum genotypes (susceptible BTx623 and resistant PI607900) in response to greenbug infestation. CONCLUSIONS Our systematic analysis of the NAC gene expression profiles provides both a preliminary survey into their roles in plant defense against insect pests and a useful reference for in-depth characterization of the SbNAC genes and the regulatory network that contributes genetic resistance to aphids.
Collapse
Affiliation(s)
- Hengyou Zhang
- Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Yinghua Huang
- USDA-ARS Plant Science Research Laboratory, 1301 N. Western Road, Stillwater, OK, 74075, USA.
| |
Collapse
|
6
|
Han K, Zhao Y, Sun Y, Li Y. NACs, generalist in plant life. PLANT BIOTECHNOLOGY JOURNAL 2023; 21:2433-2457. [PMID: 37623750 PMCID: PMC10651149 DOI: 10.1111/pbi.14161] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 07/24/2023] [Accepted: 08/01/2023] [Indexed: 08/26/2023]
Abstract
Plant-specific NAC proteins constitute a major transcription factor family that is well-known for its roles in plant growth, development, and responses to abiotic and biotic stresses. In recent years, there has been significant progress in understanding the functions of NAC proteins. NAC proteins have a highly conserved DNA-binding domain; however, their functions are diverse. Previous understanding of the structure of NAC transcription factors can be used as the basis for their functional diversity. NAC transcription factors consist of a target-binding domain at the N-terminus and a highly versatile C-terminal domain that interacts with other proteins. A growing body of research on NAC transcription factors helps us comprehend the intricate signalling network and transcriptional reprogramming facilitated by NAC-mediated complexes. However, most studies of NAC proteins have been limited to a single function. Here, we discuss the upstream regulators, regulatory components and targets of NAC in the context of their prospective roles in plant improvement strategies via biotechnology intervention, highlighting the importance of the NAC transcription factor family in plants and the need for further research.
Collapse
Affiliation(s)
- Kunjin Han
- State Key Laboratory of Tree Genetics and Breeding, Engineering Technology Research Center of Black Locust of National Forestry and Grassland Administration, National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| | - Ye Zhao
- State Key Laboratory of Tree Genetics and Breeding, Engineering Technology Research Center of Black Locust of National Forestry and Grassland Administration, National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| | - Yuhan Sun
- State Key Laboratory of Tree Genetics and Breeding, Engineering Technology Research Center of Black Locust of National Forestry and Grassland Administration, National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| | - Yun Li
- State Key Laboratory of Tree Genetics and Breeding, Engineering Technology Research Center of Black Locust of National Forestry and Grassland Administration, National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and TechnologyBeijing Forestry UniversityBeijingChina
| |
Collapse
|
7
|
Li J, Li X, Jia C, Liu D. Gene Cloning and Characterization of Transcription Factor FtNAC10 in Tartary Buckwheat ( Fagopyrum tataricum (L.) Gaertn.). Int J Mol Sci 2023; 24:16317. [PMID: 38003506 PMCID: PMC10671190 DOI: 10.3390/ijms242216317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 11/02/2023] [Accepted: 11/04/2023] [Indexed: 11/26/2023] Open
Abstract
NAC transcription factors play a significant role in plant stress responses. In this study, an NAC transcription factor, with a CDS of 792 bp encoding 263 amino acids, was cloned from Fagopyrum tataricum (L.) Gaertn. (F. tataricum), a minor cereal crop, which is rich in flavonoids and highly stress resistant. The transcription factor was named FtNAC10 (NCBI accession number: MK614506.1) and characterized as a member of the NAP subgroup of NAC transcriptions factors. The gene exhibited a highly conserved N-terminal, encoding about 150 amino acids, and a highly specific C-terminal. The resulting protein was revealed to be hydrophilic, with strong transcriptional activation activity. FtNAC10 expression occurred in various F. tataricum tissues, most noticeably in the root, and was regulated differently under various stress treatments. The over-expression of FtNAC10 in transgenic Arabidopsis thaliana (A. thaliana) seeds inhibited germination, and the presence of FtNAC10 enhanced root elongation under saline and drought stress. According to phylogenetic analysis and previous reports, our experiments indicate that FtNAC10 may regulate the stress response or development of F. tataricum through ABA-signaling pathway, although the mechanism is not yet known. This study provides a reference for further analysis of the regulatory function of FtNAC10 and the mechanism that underlies stress responses in Tartary buckwheat.
Collapse
Affiliation(s)
- Jinghuan Li
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan 430070, China; (J.L.); (D.L.)
- Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Maize Research Institute, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
- Department of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiaohua Li
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan 430070, China; (J.L.); (D.L.)
| | - Caihua Jia
- Key Laboratory of Environment Correlative Dietology (Ministry of Education), College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China;
| | - Dahui Liu
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan 430070, China; (J.L.); (D.L.)
| |
Collapse
|
8
|
Yang W, Liu C, Fu Q, Jia X, Deng L, Feng C, Wang Y, Yang Z, Yang H, Xu X. Knockout of SlbZIP68 reduces late blight resistance in tomato. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 336:111861. [PMID: 37689280 DOI: 10.1016/j.plantsci.2023.111861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/30/2023] [Accepted: 09/03/2023] [Indexed: 09/11/2023]
Abstract
Tomato (Solanum lycopersicum) is one of the most widely cultivated vegetable crop species in the world. Tomato late blight caused by Phytophthora infestans is a severe disease, which can cause serious losses in tomato production. In this study, tomato SlbZIP68 was identified as a transcription factor that can be induced by P. infestans, salicylic acid (SA) and jasmonic acid (JA). Knockout of SlbZIP68 via clustered, regularly interspaced, short palindromic repeats (CRISPR)/CRISPR-associated 9 (Cas9) technology revealed a significant decrease in tomato resistance to P. infestans. Furthermore, knockout of SlbZIP68 reduced the activity of defense enzymes and increased the accumulation of reactive oxygen species (ROS). Our findings also indicated that SlbZIP68 can activate the expression of the PR genes and enhance resistance to P. infestans. In addition, SlbZIP68 can bind to the PR3 and PR5 promoters and induce gene expression, as revealed by yeast one-hybrid (Y1H) and dual-luciferase (LUC) assays. These findings not only elucidate the mechanisms of response to P. infestans but also enable targeted breeding strategies for tomato resistance to P. infestans.
Collapse
Affiliation(s)
- Wenhui Yang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Chunxin Liu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Qingjun Fu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Xinyi Jia
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Liping Deng
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Chunying Feng
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Yuhan Wang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Zhenru Yang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China
| | - Huanhuan Yang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China.
| | - Xiangyang Xu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China.
| |
Collapse
|
9
|
Nagahage ISP, Matsuda K, Miyashita K, Fujiwara S, Mannapperuma C, Yamada T, Sakamoto S, Ishikawa T, Nagano M, Ohtani M, Kato K, Uchimiya H, Mitsuda N, Kawai‐Yamada M, Demura T, Yamaguchi M. NAC domain transcription factors VNI2 and ATAF2 form protein complexes and regulate leaf senescence. PLANT DIRECT 2023; 7:e529. [PMID: 37731912 PMCID: PMC10507225 DOI: 10.1002/pld3.529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 08/17/2023] [Accepted: 08/17/2023] [Indexed: 09/22/2023]
Abstract
The NAM, ATAF1/2, and CUC2 (NAC) domain transcription factor VND-INTERACTING2 (VNI2) negatively regulates xylem vessel formation by interacting with another NAC domain transcription factor, VASCULAR-RELATED NAC-DOMAIN7 (VND7), a master regulator of xylem vessel formation. Here, we screened interacting proteins with VNI2 using yeast two-hybrid assay and isolated two NAC domain transcription factors, Arabidopsis thaliana ACTIVATION FACTOR 2 (ATAF2) and NAC DOMAIN CONTAINING PROTEIN 102 (ANAC102). A transient gene expression assay showed that ATAF2 upregulates the expression of genes involved in leaf senescence, and VNI2 effectively inhibits the transcriptional activation activity of ATAF2. vni2 mutants accelerate leaf senescence, whereas ataf2 mutants delay leaf senescence. In addition, the accelerated leaf senescence phenotype of the vni2 mutant is recovered by simultaneous mutation of ATAF2. Our findings strongly suggest that VNI2 interacts with and inhibits ATAF2, resulting in negatively regulating leaf senescence.
Collapse
Affiliation(s)
| | - Kohei Matsuda
- Graduate School of Science and TechnologyNara Institute of Science and TechnologyIkomaJapan
| | - Kyoko Miyashita
- Bioproduction Research InstituteNational Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan
| | - Sumire Fujiwara
- Bioproduction Research InstituteNational Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan
| | - Chanaka Mannapperuma
- Umeå Plant Science Centre, Department of Plant PhysiologyUmeå UniversityUmeåSweden
| | - Takuya Yamada
- Graduate School of Science and EngineeringSaitama UniversitySaitamaJapan
| | - Shingo Sakamoto
- Bioproduction Research InstituteNational Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan
- Global Zero‐Emission Research CenterNational Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan
| | - Toshiki Ishikawa
- Graduate School of Science and EngineeringSaitama UniversitySaitamaJapan
| | - Minoru Nagano
- Graduate School of Science and EngineeringSaitama UniversitySaitamaJapan
- Present address:
College of Life SciencesRitsumeikan UniversityKusatsuJapan
| | - Misato Ohtani
- Graduate School of Science and TechnologyNara Institute of Science and TechnologyIkomaJapan
- Present address:
Department of Integrated Biosciences, Graduate School of Frontier SciencesThe University of TokyoKashiwaJapan
| | - Ko Kato
- Graduate School of Science and TechnologyNara Institute of Science and TechnologyIkomaJapan
| | - Hirofumi Uchimiya
- Institute for Environmental Science and TechnologySaitama UniversitySaitamaJapan
| | - Nobutaka Mitsuda
- Bioproduction Research InstituteNational Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan
- Global Zero‐Emission Research CenterNational Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan
| | - Maki Kawai‐Yamada
- Graduate School of Science and EngineeringSaitama UniversitySaitamaJapan
| | - Taku Demura
- Graduate School of Science and TechnologyNara Institute of Science and TechnologyIkomaJapan
| | | |
Collapse
|
10
|
Yu H, Xiao A, Wu J, Li H, Duan Y, Chen Q, Zhu H, Cao Y. GmNAC039 and GmNAC018 activate the expression of cysteine protease genes to promote soybean nodule senescence. THE PLANT CELL 2023; 35:2929-2951. [PMID: 37177994 PMCID: PMC10396383 DOI: 10.1093/plcell/koad129] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 04/03/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023]
Abstract
Root nodules are major sources of nitrogen for soybean (Glycine max (L.) Merr.) growth, development, production, and seed quality. Symbiotic nitrogen fixation is time-limited, as the root nodule senesces during the reproductive stage of plant development, specifically during seed development. Nodule senescence is characterized by the induction of senescence-related genes, such as papain-like cysteine proteases (CYPs), which ultimately leads to the degradation of both bacteroids and plant cells. However, how nodule senescence-related genes are activated in soybean is unknown. Here, we identified 2 paralogous NAC transcription factors, GmNAC039 and GmNAC018, as master regulators of nodule senescence. Overexpression of either gene induced soybean nodule senescence with increased cell death as detected using a TUNEL assay, whereas their knockout delayed senescence and increased nitrogenase activity. Transcriptome analysis and nCUT&Tag-qPCR assays revealed that GmNAC039 directly binds to the core motif CAC(A)A and activates the expression of 4 GmCYP genes (GmCYP35, GmCYP37, GmCYP39, and GmCYP45). Similar to GmNAC039 and GmNAC018, overexpression or knockout of GmCYP genes in nodules resulted in precocious or delayed senescence, respectively. These data provide essential insights into the regulatory mechanisms of nodule senescence, in which GmNAC039 and GmNAC018 directly activate the expression of GmCYP genes to promote nodule senescence.
Collapse
Affiliation(s)
- Haixiang Yu
- National Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Aifang Xiao
- National Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Jiashan Wu
- National Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Haoxing Li
- National Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Yan Duan
- National Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Qingshan Chen
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, Northeast Agricultural University, Harbin, Heilongjiang 150038, China
| | - Hui Zhu
- National Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Yangrong Cao
- National Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| |
Collapse
|
11
|
Laskar P, Hazra A, Pal A, Kundu A. Deciphering the role of alternative splicing as modulators of defense response in the MYMIV- Vigna mungo pathosystem. PHYSIOLOGIA PLANTARUM 2023; 175:e13922. [PMID: 37114622 DOI: 10.1111/ppl.13922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 04/20/2023] [Accepted: 04/24/2023] [Indexed: 06/19/2023]
Abstract
Alternative splicing (AS) is a crucial regulatory mechanism that impacts transcriptome and proteome complexity under stressful situations. Although its role in abiotic stresses is somewhat understood, our understanding of the mechanistic regulation of pre-mRNA splicing in plant-pathogen interaction is meagre. To comprehend this unexplored immune reprogramming mechanism, transcriptome profiles of Mungbean Yellow Mosaic India Virus (MYMIV)-resistant and susceptible Vigna mungo genotypes were analysed for AS genes that may underlie the resistance mechanism. Results revealed a repertoire of AS-isoforms accumulated during pathogenic infestation, with intron retention being the most common AS mechanism. Identification of 688 differential alternatively spliced (DAS) genes in the resistant host elucidates its robust antiviral response, whereas 322 DAS genes were identified in the susceptible host. Enrichment analyses confirmed DAS transcripts pertaining to stress, signalling, and immune system pathways have undergone maximal perturbations. Additionally, a strong regulation of the splicing factors has been observed both at transcriptional and post-transcriptional levels. qPCR validation of candidate DAS transcripts with induced expression upon MYMIV-infection demonstrated a competent immune response in the resistant background. The AS-impacted genes resulted either in partial/complete loss of functional domains or altered sensitivity to miRNA-mediated gene silencing. A complex regulatory module, miR7517-ATAF2, has been identified in an aberrantly spliced ATAF2 isoform that exposes an intronic miR7517 binding site, thereby suppressing the negative regulator to enhance defense reaction. The present study establishes AS as a non-canonical immune reprogramming mechanism that operates in parallel, thereby offering an alternative strategy for developing yellow mosaic-resistant V. mungo cultivars. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Parbej Laskar
- Plant Genomics and Bioinformatics Laboratory, Ramakrishna Mission Vivekananda Centenary College, Rahara, Kolkata
| | - Anjan Hazra
- Agricultural and Ecological Research Unit, Indian Statistical Institute, 203 B. T. Road, Kolkata
- Present Address: Department of Genetics, University of Calcutta, 35 Ballygunge Circular Road, Kolkata
| | - Amita Pal
- Division of Plant Biology, Bose Institute, Kolkata
| | - Anirban Kundu
- Plant Genomics and Bioinformatics Laboratory, Ramakrishna Mission Vivekananda Centenary College, Rahara, Kolkata
| |
Collapse
|
12
|
Wang W, Liu J, Mishra B, Mukhtar MS, McDowell JM. Sparking a sulfur war between plants and pathogens. TRENDS IN PLANT SCIENCE 2022; 27:1253-1265. [PMID: 36028431 DOI: 10.1016/j.tplants.2022.07.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 07/03/2022] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Abstract
The biochemical versatility of sulfur (S) lends itself to myriad roles in plant-pathogen interactions. This review evaluates the current understanding of mechanisms by which pathogens acquire S from their plant hosts and highlights new evidence that plants can limit S availability during the immune responses. We discuss the discovery of host disease-susceptibility genes related to S that can be genetically manipulated to create new crop resistance. Finally, we summarize future research challenges and propose a research agenda that leverages systems biology approaches for a holistic understanding of this important element's diverse roles in plant disease resistance and susceptibility.
Collapse
Affiliation(s)
- Wei Wang
- School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA 24061, USA
| | - Jinbao Liu
- Department of Biology, University of Alabama-Birmingham, Birmingham, AL 35294, USA
| | - Bharat Mishra
- Department of Biology, University of Alabama-Birmingham, Birmingham, AL 35294, USA
| | - M Shahid Mukhtar
- Department of Biology, University of Alabama-Birmingham, Birmingham, AL 35294, USA
| | - John M McDowell
- School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA 24061, USA.
| |
Collapse
|
13
|
Sun MM, Liu X, Huang XJ, Yang JJ, Qin PT, Zhou H, Jiang MG, Liao HZ. Genome-Wide Identification and Expression Analysis of the NAC Gene Family in Kandelia obovata, a Typical Mangrove Plant. Curr Issues Mol Biol 2022; 44:5622-5637. [PMID: 36421665 PMCID: PMC9689236 DOI: 10.3390/cimb44110381] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/10/2022] [Accepted: 11/11/2022] [Indexed: 11/15/2023] Open
Abstract
The NAC (NAM, ATAF1/2, and CUC2) gene family, one of the largest transcription factor families in plants, acts as positive or negative regulators in plant response and adaption to various environmental stresses, including cold stress. Multiple reports on the functional characterization of NAC genes in Arabidopsis thaliana and other plants are available. However, the function of the NAC genes in the typical woody mangrove (Kandelia obovata) remains poorly understood. Here, a comprehensive analysis of NAC genes in K. obovata was performed with a pluri-disciplinary approach including bioinformatic and molecular analyses. We retrieved a contracted NAC family with 68 genes from the K. obovata genome, which were unevenly distributed in the chromosomes and classified into ten classes. These KoNAC genes were differentially and preferentially expressed in different organs, among which, twelve up-regulated and one down-regulated KoNAC genes were identified. Several stress-related cis-regulatory elements, such as LTR (low-temperature response), STRE (stress response element), ABRE (abscisic acid response element), and WUN (wound-responsive element), were identified in the promoter regions of these 13 KoNAC genes. The expression patterns of five selected KoNAC genes (KoNAC6, KoNAC15, KoNAC20, KoNAC38, and KoNAC51) were confirmed by qRT-PCR under cold treatment. These results strongly implied the putative important roles of KoNAC genes in response to chilling and other stresses. Collectively, our findings provide valuable information for further investigations on the function of KoNAC genes.
Collapse
Affiliation(s)
- Man-Man Sun
- Guangxi Key Laboratory of Polysaccharide Materials and Modification, School of Marine Sciences and Biotechnology, Guangxi Minzu University, 158 West Daxue Road, Nanning 530008, China
| | - Xiu Liu
- Guangxi Key Laboratory of Special Non-Wood Forest Cultivation and Utilization, Guangxi Forestry Research Institute, 23 Yongwu Road, Nanning 530002, China
| | - Xiao-Juan Huang
- Guangxi Key Laboratory of Polysaccharide Materials and Modification, School of Marine Sciences and Biotechnology, Guangxi Minzu University, 158 West Daxue Road, Nanning 530008, China
| | - Jing-Jun Yang
- Guangxi Key Laboratory of Special Non-Wood Forest Cultivation and Utilization, Guangxi Forestry Research Institute, 23 Yongwu Road, Nanning 530002, China
| | - Pei-Ting Qin
- Guangxi Key Laboratory of Polysaccharide Materials and Modification, School of Marine Sciences and Biotechnology, Guangxi Minzu University, 158 West Daxue Road, Nanning 530008, China
| | - Hao Zhou
- Guangxi Key Laboratory of Polysaccharide Materials and Modification, School of Marine Sciences and Biotechnology, Guangxi Minzu University, 158 West Daxue Road, Nanning 530008, China
| | - Ming-Guo Jiang
- Guangxi Key Laboratory of Polysaccharide Materials and Modification, School of Marine Sciences and Biotechnology, Guangxi Minzu University, 158 West Daxue Road, Nanning 530008, China
| | - Hong-Ze Liao
- Guangxi Key Laboratory of Polysaccharide Materials and Modification, School of Marine Sciences and Biotechnology, Guangxi Minzu University, 158 West Daxue Road, Nanning 530008, China
| |
Collapse
|
14
|
Meng L, Yang H, Xiang L, Wang Y, Chan Z. NAC transcription factor TgNAP promotes tulip petal senescence. PLANT PHYSIOLOGY 2022; 190:1960-1977. [PMID: 35900170 PMCID: PMC9614467 DOI: 10.1093/plphys/kiac351] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 06/29/2022] [Indexed: 06/15/2023]
Abstract
Petal senescence is a crucial determinant for ornamental quality and economic value of floral crops. Salicylic acid (SA) and reactive oxygen species (ROS) are two prominent factors involved in plant senescence regulation. In this study, tulip TgNAP (NAC-like, activated by APETALA3/PISTILLATA) was characterized as positively regulating tulip petal senescence through dually regulating SA biosynthesis and ROS detoxification pathways. TgNAP was upregulated in senescing petals of tulip while exogenous SA and H2O2 treatments substantially promoted petal senescence in tulip. Silencing of TgNAP by VIGS assay delayed SA and H2O2-induced petal senescence in tulip, whereas overexpression of TgNAP promoted the senescence process in Arabidopsis (Arabidopsis thaliana) plants. Additionally, inhibition of SA biosynthesis prolonged the lifespan of TgNAP-silenced petal discs. Further evidence indicated that TgNAP activates the transcriptions of two key SA biosynthetic genes ISOCHORISMATE SYNTHASE 1 (TgICS1) and PHENYLALANINE AMMONIA-LYASE 1 (TgPAL1) through directly binding to their promoter regions. Meanwhile, TgNAP repressed ROS scavenging by directly inhibiting PEROXIDASE 12 (POD12) and POD17 expression. Taken together, these results indicate that TgNAP enhances SA biosynthesis and ROS accumulation to positively regulate petal senescence in tulip.
Collapse
Affiliation(s)
- Lin Meng
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, PR China
- National R&D Centre for Citrus Preservation, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Haipo Yang
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, PR China
- National R&D Centre for Citrus Preservation, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Lin Xiang
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, PR China
| | | | | |
Collapse
|
15
|
Mapuranga J, Zhang N, Zhang L, Liu W, Chang J, Yang W. Harnessing genetic resistance to rusts in wheat and integrated rust management methods to develop more durable resistant cultivars. FRONTIERS IN PLANT SCIENCE 2022; 13:951095. [PMID: 36311120 PMCID: PMC9614308 DOI: 10.3389/fpls.2022.951095] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
Wheat is one of the most important staple foods on earth. Leaf rust, stem rust and stripe rust, caused by Puccini triticina, Puccinia f. sp. graminis and Puccinia f. sp. striiformis, respectively, continue to threaten wheat production worldwide. Utilization of resistant cultivars is the most effective and chemical-free strategy to control rust diseases. Convectional and molecular biology techniques identified more than 200 resistance genes and their associated markers from common wheat and wheat wild relatives, which can be used by breeders in resistance breeding programmes. However, there is continuous emergence of new races of rust pathogens with novel degrees of virulence, thus rendering wheat resistance genes ineffective. An integration of genomic selection, genome editing, molecular breeding and marker-assisted selection, and phenotypic evaluations is required in developing high quality wheat varieties with resistance to multiple pathogens. Although host genotype resistance and application of fungicides are the most generally utilized approaches for controlling wheat rusts, effective agronomic methods are required to reduce disease management costs and increase wheat production sustainability. This review gives a critical overview of the current knowledge of rust resistance, particularly race-specific and non-race specific resistance, the role of pathogenesis-related proteins, non-coding RNAs, and transcription factors in rust resistance, and the molecular basis of interactions between wheat and rust pathogens. It will also discuss the new advances on how integrated rust management methods can assist in developing more durable resistant cultivars in these pathosystems.
Collapse
|
16
|
Wang X, Rehmani MS, Chen Q, Yan J, Zhao P, Li C, Zhai Z, Zhou N, Yang B, Jiang YQ. Rapeseed NAM transcription factor positively regulates leaf senescence via controlling senescence-associated gene expression. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 323:111373. [PMID: 35817290 DOI: 10.1016/j.plantsci.2022.111373] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 06/16/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
Leaf senescence is one of the most visible forms of programmed cell death in plants. It can be a seasonal adaptation in trees or the final stage in crops ensuring efficient translocation of nutrients to seeds. Along with developmental cues, various environmental factors could also trigger the onset of senescence through transcriptional cascades. Rapeseed (Brassica napus L.) is an important oil crop with its yielding affected by significant falling leaves as a result of leaf senescence, compared to many other crops. Therefore, a better understanding of leaf senescence and developing strategies controlling the progress of leaf senescence in rapeseed is necessary for warranting vegetable oil security. Here we functionally characterized the gene BnaNAM encoding No Apical Meristem (NAM) homologue to identify transcriptional regulation of leaf senescence in rapeseed. A combination of transient and stable expression techniques revealed overexpression of BnaNAM induced ROS production and leaf chlorosis. Quantitative evaluation of up-regulated genes in BnaNAM overexpression lines identified genes related to ROS production (RbohD, RbohF), proteases (βVPE, γVPE, SAG12, SAG15), chlorophyll catabolism (PaO, PPH) and nucleic acid degradation (BFN1) as the putative downstream targets. A dual luciferase-based transcriptional activation assay of selected promoters further confirmed BnaNAM mediated transactivation of promoters of the downstream genes. Finally, an electrophoretic mobility shift assay further confirmed direct binding of BnaNAM to promoters of βVPE, γVPE, SAG12, SAG15 and BFN1. Our results therefore demonstrate a novel role of BnaNAM in leaf senescence.
Collapse
Affiliation(s)
- Xu Wang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Muhammad Saad Rehmani
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Qinqin Chen
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Jingli Yan
- College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, Henan province, China
| | - Peiyu Zhao
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Chun Li
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Zengkang Zhai
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Na Zhou
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Bo Yang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Yuan-Qing Jiang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China.
| |
Collapse
|
17
|
Gong F, Zhang T, Wang Z, Qi T, Lu Y, Liu Y, Zhao S, Liu R, Yi R, He J, Tu B, Zhang T, Zhang L, Hao M, Zheng Y, Liu D, Huang L, Wu B. Genome-Wide Survey and Functional Verification of the NAC Transcription Factor Family in Wild Emmer Wheat. Int J Mol Sci 2022; 23:ijms231911598. [PMID: 36232900 PMCID: PMC9569692 DOI: 10.3390/ijms231911598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/23/2022] [Accepted: 09/25/2022] [Indexed: 12/04/2022] Open
Abstract
The NAC transcription factor (TF) family is one of the largest TF families in plants, which has been widely reported in rice, maize and common wheat. However, the significance of the NAC TF family in wild emmer wheat (Triticum turgidum ssp. dicoccoides) is not yet well understood. In this study, a genome-wide investigation of NAC genes was conducted in the wild emmer genome and 249 NAC family members (TdNACs) were identified. The results showed that all of these genes contained NAM/NAC-conserved domains and most of them were predicted to be located on the nucleus. Phylogenetic analysis showed that these 249 TdNACs can be classified into seven clades, which are likely to be involved in the regulation of grain protein content, starch synthesis and response to biotic and abiotic stresses. Expression pattern analysis revealed that TdNACs were highly expressed in different wheat tissues such as grain, root, leaves and shoots. We found that TdNAC8470 was phylogenetically close to NAC genes that regulate either grain protein or starch accumulation. Overexpression of TdNAC8470 in rice showed increased grain starch concentration but decreased grain Fe, Zn and Mn contents compared with wild-type plants. Protein interaction analysis indicated that TdNAC8470 might interact with granule-bound starch synthase 1 (TdGBSS1) to regulate grain starch accumulation. Our work provides a comprehensive understanding of the NAC TFs family in wild emmer wheat and establishes the way for future functional analysis and genetic improvement of increasing grain starch content in wheat.
Collapse
Affiliation(s)
- Fangyi Gong
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Tian Zhang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhe Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Tiangang Qi
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Yusen Lu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuhang Liu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Shuhong Zhao
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Ruiqing Liu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Rui Yi
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Jingshu He
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Bin Tu
- Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Tao Zhang
- Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Lianquan Zhang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China
| | - Ming Hao
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Youliang Zheng
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Dengcai Liu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Lin Huang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Correspondence: (L.H.); (B.W.)
| | - Bihua Wu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu 611130, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Correspondence: (L.H.); (B.W.)
| |
Collapse
|
18
|
Song H, Li Y, Wang Z, Duan Z, Wang Y, Yang E, Que Q, Chen X, Li P. Transcriptome profiling of Toona ciliata young stems in response to Hypsipyla robusta Moore. FRONTIERS IN PLANT SCIENCE 2022; 13:950945. [PMID: 36105698 PMCID: PMC9465623 DOI: 10.3389/fpls.2022.950945] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
Toona ciliata is a traditional woody plant that can be used as a medicinal material in China. The extracts of its roots, stems, leaves, and flowers all have a wide range of bioactive compounds. However, T. ciliata has been facing an unresolved pest problem caused by Hypsipyla robusta Moore (HRM), which seriously affects its growth and development. In this study, the expression level of TcMYB3 gene reached the maximum (28-fold) at 12 h and transcriptome sequencing of young stems eaten by HRM for 0, 3, 12, and 21 h were performed. A large number of differentially expressed genes (DEGs) were identified including jointly up-regulated genes (263) and down-regulated genes (378). JA synthesis and signaling transduction, terpene biosynthesis, and MAPKs signaling pathway were analyzed in depth and found that TcOPR3, TcJAR1, TcJAZs, and TcTPS9 genes possessed anti-insect potential. Moreover, MYB and ERF transcription factor (TF) families were significantly strengthened to the point that they may participate in induced defense mechanisms in T. ciliata. These data not only provide insights into the molecular mechanisms in resistance of T. ciliata to HRM but also helps to explore the new biocontrol strategies against insects in eco-friendly woody plants.
Collapse
Affiliation(s)
- Huiyun Song
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, China
| | - Yue Li
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, China
| | - Zhi Wang
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, China
| | - Zhihao Duan
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, China
| | - Yueyang Wang
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, China
| | - Endian Yang
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, China
| | - Qingmin Que
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, China
| | - Xiaoyang Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
| | - Pei Li
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, South China Agricultural University, Guangzhou, China
| |
Collapse
|
19
|
Que Y, Huang D, Gong S, Zhang X, Yuan B, Xue M, Shi W, Zeng F, Liu M, Chen T, Yu D, Yan X, Wang Z, Yang L, Xiang L. Indole-3-Carboxylic Acid From the Endophytic Fungus Lasiodiplodia pseudotheobromae LPS-1 as a Synergist Enhancing the Antagonism of Jasmonic Acid Against Blumeria graminis on Wheat. Front Cell Infect Microbiol 2022; 12:898500. [PMID: 35860382 PMCID: PMC9289256 DOI: 10.3389/fcimb.2022.898500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 06/06/2022] [Indexed: 11/17/2022] Open
Abstract
The discovery of natural bioactive compounds from endophytes or medicinal plants against plant diseases is an attractive option for reducing the use of chemical fungicides. In this study, three compounds, indole-3-carbaldehyde, indole-3-carboxylic acid (3-ICA), and jasmonic acid (JA), were isolated from the EtOAc extract of the culture filtrate of the endophytic fungus Lasiodiplodia pseudotheobromae LPS-1, which was previously isolated from the medicinal plant, Ilex cornuta. Some experiments were conducted to further determine the antifungal activity of these compounds on wheat powdery mildew. The results showed that JA was much more bioactive than indole-3-carbaldehyde and 3-ICA against Blumeria graminis, and the disease severity caused by B. graminis decreased significantly with the concentration increase of JA treatment. The assay of the interaction of 3-ICA and JA indicated that there was a significant synergistic effect between the two compounds on B. graminis in each of the ratios of 3-ICA to JA (3-ICA:JA) ranging from 1:9 to 9:1. When the compound ratio of 3-ICA to JA was 2:8, the synergistic coefficient was the highest as 22.95. Meanwhile, a histological investigation indicated that, under the treatment of JA at 500 μg/ml or 3-ICA:JA (2:8) at 40 μg/ml, the appressorium development and haustorium formation of B. graminis were significantly inhibited. Taken together, we concluded that JA plays an important role in the infection process of B. graminis and that 3-ICA as a synergist of JA enhances the antagonism against wheat powdery mildew.
Collapse
Affiliation(s)
- Yawei Que
- Key Laboratory of Integrated Pest Management of Crop in Central China, Ministry of Agriculture, Hubei Key Laboratory of Crop Diseases, Insect Pests and Weeds Control, Institute of Plant Protection and Soil Fertility, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Donghai Huang
- Institute of Chinese Herbal Medicines, Hubei Academy of Agricultural Sciences, Enshi, China
| | - Shuangjun Gong
- Key Laboratory of Integrated Pest Management of Crop in Central China, Ministry of Agriculture, Hubei Key Laboratory of Crop Diseases, Insect Pests and Weeds Control, Institute of Plant Protection and Soil Fertility, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Xuejiang Zhang
- Key Laboratory of Integrated Pest Management of Crop in Central China, Ministry of Agriculture, Hubei Key Laboratory of Crop Diseases, Insect Pests and Weeds Control, Institute of Plant Protection and Soil Fertility, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Bin Yuan
- Key Laboratory of Integrated Pest Management of Crop in Central China, Ministry of Agriculture, Hubei Key Laboratory of Crop Diseases, Insect Pests and Weeds Control, Institute of Plant Protection and Soil Fertility, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Minfeng Xue
- Key Laboratory of Integrated Pest Management of Crop in Central China, Ministry of Agriculture, Hubei Key Laboratory of Crop Diseases, Insect Pests and Weeds Control, Institute of Plant Protection and Soil Fertility, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Wenqi Shi
- Key Laboratory of Integrated Pest Management of Crop in Central China, Ministry of Agriculture, Hubei Key Laboratory of Crop Diseases, Insect Pests and Weeds Control, Institute of Plant Protection and Soil Fertility, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Fansong Zeng
- Key Laboratory of Integrated Pest Management of Crop in Central China, Ministry of Agriculture, Hubei Key Laboratory of Crop Diseases, Insect Pests and Weeds Control, Institute of Plant Protection and Soil Fertility, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Meilin Liu
- Key Laboratory of Integrated Pest Management of Crop in Central China, Ministry of Agriculture, Hubei Key Laboratory of Crop Diseases, Insect Pests and Weeds Control, Institute of Plant Protection and Soil Fertility, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Tingting Chen
- Key Laboratory of Integrated Pest Management of Crop in Central China, Ministry of Agriculture, Hubei Key Laboratory of Crop Diseases, Insect Pests and Weeds Control, Institute of Plant Protection and Soil Fertility, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Dazhao Yu
- Key Laboratory of Integrated Pest Management of Crop in Central China, Ministry of Agriculture, Hubei Key Laboratory of Crop Diseases, Insect Pests and Weeds Control, Institute of Plant Protection and Soil Fertility, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Xia Yan
- The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom
| | - Zhengyi Wang
- State Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Lijun Yang
- Key Laboratory of Integrated Pest Management of Crop in Central China, Ministry of Agriculture, Hubei Key Laboratory of Crop Diseases, Insect Pests and Weeds Control, Institute of Plant Protection and Soil Fertility, Hubei Academy of Agricultural Sciences, Wuhan, China
- *Correspondence: Libo Xiang, ; Lijun Yang,
| | - Libo Xiang
- Key Laboratory of Integrated Pest Management of Crop in Central China, Ministry of Agriculture, Hubei Key Laboratory of Crop Diseases, Insect Pests and Weeds Control, Institute of Plant Protection and Soil Fertility, Hubei Academy of Agricultural Sciences, Wuhan, China
- *Correspondence: Libo Xiang, ; Lijun Yang,
| |
Collapse
|
20
|
Xie J, Ding Y, Gao T, He S, Zhao K, Yang X, Zhang J, Yang Z. Transcriptomic and proteomic analyses of Cucurbita ficifolia Bouché (Cucurbitaceae) response to Fusarium oxysporum f.sp. cucumerium. BMC Genomics 2022; 23:436. [PMID: 35698057 PMCID: PMC9190096 DOI: 10.1186/s12864-022-08674-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 06/06/2022] [Indexed: 11/25/2022] Open
Abstract
Background Fusarium oxysporum f. sp. cucumerinum (FOC) is the causal agent of cucumber Fusarium wilt, which can cause extensive damages and productivity losses. Cucurbita ficifolia Bouché (Cucurbitaceae) is usually used as rootstock for cucumber because of its excellent resistance to Fusarium wilt. Our previous study found that C.ficifolia has high FOC resistance, the underlying mechanism of which is unclear. Results Transcriptome and proteome profiling was performed on the basis of RNA-Seq and isobaric tag for relative and absolute quantitation technology to explore the molecular mechanisms of the response of Cucurbita ficifolia Bouché to Fusarium oxysporum f. sp. cucumerium infection. Comparative analyses revealed that 1850 genes and 356 protein species were differentially regulated at 2d and 4d after FOC inoculation. However, correlation analysis revealed that only 11 and 39 genes were differentially regulated at both the transcriptome and proteome levels after FOC inoculation at 2d and 4d, respectively. After FOC inoculation, plant hormones signal transduction, transcription factors were stimulated, whereas wax biosynthesis and photosynthesis were suppressed. Increased synthesis of oxidative-redox proteins is involved in resistance to FOC. Conclusions This study is the first to reveal the response of C. ficifolia leaf to FOC infection at the transcriptome and proteome levels, and to show that FOC infection activates plant hormone signaling and transcription factors while suppressing wax biosynthesis and photosynthesis. The accumulation of oxidative-redox proteins also plays an important role in the resistance of C. ficifolia to FOC. Results provide new information regarding the processes of C. ficifolia leaf resistance to FOC and will contribute to the breeding of cucumber rootstock with FOC resistance. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-022-08674-7.
Collapse
Affiliation(s)
- Junjun Xie
- College of Horticulture and Landscape, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Yumei Ding
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.,Biotechnology and Germplasm Resources Institute Yunnan Academy of Agricultural Sciences, Kunming, 650205, Yunnan, People's Republic of China
| | - Ting Gao
- College of Horticulture and Landscape, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Shuilian He
- College of Horticulture and Landscape, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Kai Zhao
- College of Horticulture and Landscape, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Xuehu Yang
- College of Horticulture and Landscape, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Jie Zhang
- College of Horticulture and Landscape, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Zhengan Yang
- College of Horticulture and Landscape, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.
| |
Collapse
|
21
|
Li C, Zhang J, Zhang Q, Dong A, Wu Q, Zhu X, Zhu X. Genome-Wide Identification and Analysis of the NAC Transcription Factor Gene Family in Garden Asparagus (Asparagus officinalis). Genes (Basel) 2022; 13:genes13060976. [PMID: 35741738 PMCID: PMC9222252 DOI: 10.3390/genes13060976] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/27/2022] [Accepted: 05/27/2022] [Indexed: 02/01/2023] Open
Abstract
As a large plant-specific gene family, the NAC (NAM, ATAF1/2, and CUC2) transcription factor is related to plant growth, development, and response to abiotic stresses. Although the draft genome of garden asparagus (Asparagus officinalis) has been released, the genome-wide investigation of the NAC gene family is still unavailable. In this study, a total of 85 A. officinalis NAC genes were identified, and a comprehensive analysis of the gene family was performed, including physicochemical properties, phylogenetic relationship, chromosome localization, gene structure, conserved motifs, intron/exon, cis-acting elements, gene duplication, syntenic analysis, and differential gene expression analysis. The phylogenetic analysis demonstrated that there were 14 subgroups in both A. officinalis and Arabidopsis thaliana, and the genes with a similar gene structure and motif distribution were clustered in the same group. The cis-acting regulatory analysis of AoNAC genes indicated four types of cis-acting elements were present in the promoter regions, including light-responsive, hormone-responsive, plant-growth-and-development-related, and stress-responsive elements. The chromosomal localization analysis found that 81 NAC genes in A. officinalis were unevenly distributed on nine chromosomes, and the gene duplication analysis showed three pairs of tandem duplicated genes and five pairs of segmental duplications, suggesting that gene duplication is possibly associated with the amplification of the A. officinalis NAC gene family. The differential gene expression analysis revealed one and three AoNAC genes that were upregulated and downregulated under different types of salinity stress, respectively. This study provides insight into the evolution, diversity, and characterization of NAC genes in garden asparagus and will be helpful for future understanding of their biological roles and molecular mechanisms in plants.
Collapse
Affiliation(s)
- Caifeng Li
- Center for Computational Biology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (C.L.); (Q.Z.); (A.D.); (Q.W.); (X.Z.)
| | - Jingyang Zhang
- Tandon School of Engineering, New York University, New York, NY 11201, USA;
| | - Qianqian Zhang
- Center for Computational Biology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (C.L.); (Q.Z.); (A.D.); (Q.W.); (X.Z.)
| | - Ang Dong
- Center for Computational Biology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (C.L.); (Q.Z.); (A.D.); (Q.W.); (X.Z.)
| | - Qiuhong Wu
- Center for Computational Biology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (C.L.); (Q.Z.); (A.D.); (Q.W.); (X.Z.)
| | - Xingyu Zhu
- Center for Computational Biology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (C.L.); (Q.Z.); (A.D.); (Q.W.); (X.Z.)
| | - Xuli Zhu
- Center for Computational Biology, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (C.L.); (Q.Z.); (A.D.); (Q.W.); (X.Z.)
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing 100083, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Beijing Forestry University, Ministry of Education, Beijing 100083, China
- The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing 100083, China
- Correspondence:
| |
Collapse
|
22
|
Geng X, Gao Z, Zhao L, Zhang S, Wu J, Yang Q, Liu S, Chen X. Comparative transcriptome analysis of resistant and susceptible wheat in response to Rhizoctonia cerealis. BMC PLANT BIOLOGY 2022; 22:235. [PMID: 35534832 PMCID: PMC9087934 DOI: 10.1186/s12870-022-03584-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 04/07/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Sheath blight is an important disease caused by Rhizoctonia cerealis that affects wheat yields worldwide. No wheat varieties have been identified with high resistance or immunity to sheath blight. Understanding the sheath blight resistance mechanism is essential for controlling this disease. In this study, we investigated the response of wheat to Rhizoctonia cerealis infection by analyzing the cytological changes and transcriptomes of common wheat 7182 with moderate sensitivity to sheath blight and H83 with moderate resistance. RESULTS The cytological observation showed that the growth of Rhizoctonia cerealis on the surface and its expansion inside the leaf sheath tissue were more rapid in the susceptible material. According to the transcriptome sequencing results, a total of 88685 genes were identified in both materials, including 20156 differentially expressed genes (DEGs) of which 12087 was upregulated genes and 8069 was downregulated genes. At 36 h post-inoculation, compared with the uninfected control, 11498 DEGs were identified in resistant materials, with 5064 downregulated genes and 6434 upregulated genes, and 13058 genes were detected in susceptible materials, with 6759 downregulated genes and 6299 upregulated genes. At 72 h post-inoculation, compared with the uninfected control, 6578 DEGs were detected in resistant materials, with 2991 downregulated genes and 3587 upregulated genes, and 7324 genes were detected in susceptible materials, with 4119 downregulated genes and 3205 upregulated genes. Functional annotation and enrichment analysis showed that the main pathways enriched for the DEGs included biosynthesis of secondary metabolites, carbon metabolism, plant hormone signal transduction, and plant-pathogen interaction. In particular, phenylpropane biosynthesis pathway is specifically activated in resistant variety H83 after infection. Many DEGs also belonged to the MYB, AP2, NAC, and WRKY transcription factor families. CONCLUSIONS Thus, we suggest that the normal functioning of plant signaling pathways and differences in the expression of key genes and transcription factors in some important metabolic pathways may be important for defending wheat against sheath blight. These findings may facilitate further exploration of the sheath blight resistance mechanism in wheat and the cloning of related genes.
Collapse
Affiliation(s)
- Xingxia Geng
- Shaanxi Key Laboratory of Genetic Engineering for Plant Breeding, College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Zhen Gao
- Shaanxi Key Laboratory of Genetic Engineering for Plant Breeding, College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Li Zhao
- Shaanxi Key Laboratory of Genetic Engineering for Plant Breeding, College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Shufa Zhang
- Shaanxi Key Laboratory of Genetic Engineering for Plant Breeding, College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Jun Wu
- Shaanxi Key Laboratory of Genetic Engineering for Plant Breeding, College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Qunhui Yang
- Shaanxi Key Laboratory of Genetic Engineering for Plant Breeding, College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Shuhui Liu
- Shaanxi Key Laboratory of Genetic Engineering for Plant Breeding, College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Xinhong Chen
- Shaanxi Key Laboratory of Genetic Engineering for Plant Breeding, College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| |
Collapse
|
23
|
Jiang H, Li X, Ma L, Ren Y, Bi Y, Prusky D. Transcriptome sequencing and differential expression analysis of natural and BTH-treated wound healing in potato tubers (Solanum tuberosum L.). BMC Genomics 2022; 23:263. [PMID: 35382736 PMCID: PMC8981635 DOI: 10.1186/s12864-022-08480-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 03/14/2022] [Indexed: 02/05/2023] Open
Abstract
Background Wound healing is a representative phenomenon of potato tubers subjected to mechanical injuries. Our previous results found that benzo-(1,2,3)-thiadiazole-7-carbothioic acid S-methyl ester (BTH) promoted the wound healing of potato tubers. However, the molecular mechanism related to inducible wound healing remains unknown. Results Transcriptomic evaluation of healing tissues from potato tubers at three stages, namely, 0 d (nonhealing), 5 d (wounded tubers healed for 5 d) and 5 d (BTH-treated tubers healed for 5 d) using RNA-Seq and differentially expressed genes (DEGs) analysis showed that more than 515 million high-quality reads were generated and a total of 7665 DEGs were enriched, and 16 of these DEGs were selected by qRT-PCR analysis to further confirm the RNA sequencing data. Gene ontology (GO) enrichment analysis indicated that the most highly DEGs were involved in metabolic and cellular processes, and KEGG enrichment analysis indicated that a large number of DEGs were associated with plant hormones, starch and sugar metabolism, fatty acid metabolism, phenylpropanoid biosynthesis and terpenoid skeleton biosynthesis. Furthermore, a few candidate transcription factors, including MYB, NAC and WRKY, and genes related to Ca2+-mediated signal transduction were also found to be differentially expressed during wound healing. Most of these enriched DEGs were upregulated after BTH treatment. Conclusion This comparative expression profile provided useful resources for studies of the molecular mechanism via these promising candidates involved in natural or elicitor-induced wound healing in potato tubers. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-022-08480-1.
Collapse
Affiliation(s)
- Hong Jiang
- College of Horticulture, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Xue Li
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Li Ma
- College of Horticulture, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Yingyue Ren
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Yang Bi
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China.
| | - Dov Prusky
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China.,Department of Postharvest Science, Agricultural Research Organization, 7505101, Rishon LeZion, Israel
| |
Collapse
|
24
|
Peng H, Phung J, Stowe EC, Dhingra A, Neff MM. The NAC transcription factor ATAF2 promotes ethylene biosynthesis and response in Arabidopsis thaliana seedlings. FEBS Lett 2022; 596:1586-1599. [PMID: 35170054 DOI: 10.1002/1873-3468.14317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 11/10/2022]
Abstract
Arabidopsis thaliana ACTIVATING FACTOR 2 (ATAF2) plays extensive regulatory roles in pathogenesis, seedling development, and stress responses. Here, we performed transcriptome analysis on ATAF2 loss- and gain-of-function mutants to identify differentially expressed genes (DEGs). Gene ontology analyses on DEGs reveal that ATAF2 enhances seedling responses to multiple hormone and stress signals. In particular, our transcriptome analysis suggests that ATAF2 promotes ethylene biosynthesis and responses via activating relevant genes. This novel role of ATAF2 was further demonstrated by using multiple ATAF2 null and overexpression lines for reverse transcription quantitative PCR verification, ethylene production measurements, and assays of seedlings growth responses to the ethylene immediate biosynthetic precursor 1-aminocyclopropane-1-carboxylic acid (ACC). ACC suppresses ATAF2 expression to form a negative feedback regulation loop.
Collapse
Affiliation(s)
- Hao Peng
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA.,Chemical and Hop Laboratory, Department of Agriculture, Washington State, Yakima, WA, 98902, USA
| | - Jessica Phung
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA
| | - Evan C Stowe
- Department of Horticulture, Washington State University, Pullman, WA, 99164, USA
| | - Amit Dhingra
- Department of Horticulture, Washington State University, Pullman, WA, 99164, USA.,Department of Horticultural Sciences, Texas A&M University, College Station, TX, 77843, USA
| | - Michael M Neff
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA
| |
Collapse
|
25
|
HuNAC20 and HuNAC25, Two Novel NAC Genes from Pitaya, Confer Cold Tolerance in Transgenic Arabidopsis. Int J Mol Sci 2022; 23:ijms23042189. [PMID: 35216304 PMCID: PMC8876859 DOI: 10.3390/ijms23042189] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/11/2022] [Accepted: 02/11/2022] [Indexed: 11/21/2022] Open
Abstract
NAC transcription factors are one of the largest families of transcriptional regulators in plants, and members of the gene family play vital roles in regulating plant growth and development processes including biotic/abiotic stress responses. However, little information is available about the NAC family in pitaya. In this study, we conducted a genome-wide analysis and a total of 64 NACs (named HuNAC1-HuNAC64) were identified in pitaya (Hylocereus). These genes were grouped into fifteen subgroups with diversities in gene proportions, exon–intron structures, and conserved motifs. Genome mapping analysis revealed that HuNAC genes were unevenly scattered on all eleven chromosomes. Synteny analysis indicated that the segmental duplication events played key roles in the expansion of the pitaya NAC gene family. Expression levels of these HuNAC genes were analyzed under cold treatments using qRT-PCR. Four HuNAC genes, i.e., HuNAC7, HuNAC20, HuNAC25, and HuNAC30, were highly induced by cold stress. HuNAC7, HuNAC20, HuNAC25, and HuNAC30 were localized exclusively in the nucleus. HuNAC20, HuNAC25, and HuNAC30 were transcriptional activators while HuNAC7 was a transcriptional repressor. Overexpression of HuNAC20 and HuNAC25 in Arabidopsis thaliana significantly enhanced tolerance to cold stress through decreasing ion leakage, malondialdehyde (MDA), and H2O2 and O2− accumulation, accompanied by upregulating the expression of cold-responsive genes (AtRD29A, AtCOR15A, AtCOR47, and AtKIN1). This study presents comprehensive information on the understanding of the NAC gene family and provides candidate genes to breed new pitaya cultivars with tolerance to cold conditions through genetic transformation.
Collapse
|
26
|
Gao Y, Li Z, Yang C, Li G, Zeng H, Li Z, Zhang Y, Yang X. Pseudomonas syringae activates ZAT18 to inhibit salicylic acid accumulation by repressing EDS1 transcription for bacterial infection. THE NEW PHYTOLOGIST 2022; 233:1274-1288. [PMID: 34797591 DOI: 10.1111/nph.17870] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 11/09/2021] [Indexed: 06/13/2023]
Abstract
Phytopathogens can manipulate plant hormone signaling to counteract immune responses; however, the underlying mechanism is mostly unclear. Here, we report that Pseudomonas syringae pv tomato (Pst) DC3000 induces expression of C2H2 zinc finger transcription factor ZAT18 in a jasmonic acid (JA)-signaling-dependent manner. Biochemical assays further confirmed that ZAT18 is a direct target of MYC2, which is a very important regulator in JA signaling. CRISPR/Cas9-generated zat18-cr mutants exhibited enhanced resistance to Pst DC3000, while overexpression of ZAT18 resulted in impaired disease resistance. Genetic characterization of ZAT18 mutants demonstrated that ZAT18 represses defense responses by inhibiting the accumulation of the key plant immune signaling molecule salicylic acid (SA), which is dependent on its EAR motif. ZAT18 exerted this inhibitory effect by directly repressing the transcription of Enhanced Disease Susceptibility 1 (EDS1), which is the key signaling component of pathogen-induced SA accumulation. Overexpression of ZAT18 resulted in decreased SA content, while loss of function of ZAT18 showed enhanced SA accumulation upon pathogen infection. Furthermore, enhanced resistance and SA content in zat18-cr mutants was abolished by the mutation in EDS1. Our data indicate that pathogens induce ZAT18 expression to repress the transcription of EDS1, further antagonising SA accumulation for bacterial infection.
Collapse
Affiliation(s)
- Yuhan Gao
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Ze Li
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Chenyu Yang
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Guangyue Li
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Hongmei Zeng
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Zhonghai Li
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Yi Zhang
- Department of Biology, School of Life Sciences, Institute of Plant and Food Science, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China
| | - Xiufen Yang
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| |
Collapse
|
27
|
Bhakta S, Negi S, Tak H, Singh S, Ganapathi TR. MusaATAF2 like protein, a stress-related transcription factor, induces leaf senescence by regulating chlorophyll catabolism and H 2 O 2 accumulation. PHYSIOLOGIA PLANTARUM 2022; 174:e13593. [PMID: 34761415 DOI: 10.1111/ppl.13593] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 09/09/2021] [Accepted: 11/09/2021] [Indexed: 06/13/2023]
Abstract
NAC transcription factors are known for their diverse role in plants. In this study, we have demonstrated the role of MusaATAF2, a banana NAC transcription factor, in leaf senescence. Its expression gets strongly up-regulated during the early stress responses of drought and high salinity exposure and down-regulated under ABA application, which suggests MusaATAF2 is a stress-related NAC transcription factor. To study the role of MusaATAF2 in banana, we have transformed the banana embryogenic cells with MusaATAF2 coding region and generated transgenic banana plants. Overexpression of MusaATAF2 in banana plants caused yellow leaf phenotype under control condition, suggesting its role as a senescence-associated transcription factor. Transgenic banana leaves exhibited low chlorophyll content and high H2 O2 accumulation. Hormone analysis of the leaves demonstrated a higher accumulation of ABA in the transgenic plants than the controls. Transgenic plants overexpressing MusaATAF2 have a higher transcript abundance of two chlorophyll catabolic pathway genes (PAO and HCAR) and lower transcript abundance of ROS scavenging enzymes (TDP, THIO, CAT, APX, and PRXDN) than control. Together, all these analyses indicate that MusaATAF2 induces senescence by inducing chlorophyll degradation and H2 O2 accumulation in banana plants and controls its own expression using an ABA-dependent feedback loop.
Collapse
Affiliation(s)
- Subham Bhakta
- Plant Cell Culture Technology Section, Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - Sanjana Negi
- Department of Biotechnology, University of Mumbai, Mumbai, India
| | - Himanshu Tak
- Plant Cell Culture Technology Section, Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - Sudhir Singh
- Homi Bhabha National Institute, Mumbai, India
- Plant Biotechnology & Secondary Metabolites Section, Nuclear Agriculture & Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Thumbali R Ganapathi
- Plant Cell Culture Technology Section, Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| |
Collapse
|
28
|
Chhabra B, Singh L, Wallace S, Schoen A, Dong Y, Tiwari V, Rawat N. Screening of an Ethyl Methane Sulfonate Mutagenized Population of a Wheat Cultivar Susceptible to Fusarium Head Blight Identifies Resistant Variants. PLANT DISEASE 2021; 105:3669-3676. [PMID: 34132597 DOI: 10.1094/pdis-03-21-0670-re] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Fusarium head blight (FHB) primarily caused by Fusarium graminearum is a key disease of small grains. Diseased spikes show symptoms of premature bleaching shortly after infection and have aborted or shriveled seeds, resulting in reduced yields. The fungus also deteriorates quality and safety of the grain because of production of mycotoxins, especially deoxynivalenol (DON), which can result in grain being docked or rejected at the point of sale. Genetic host resistance to FHB is quantitative, and no complete genetic resistance against this devastating disease is available. Alternative approaches to develop new sources of FHB resistance are needed. In this study, we performed extensive forward genetic screening of the M4 generation of an ethyl methane sulfonate-induced mutagenized population of cultivar Jagger to isolate variants with FHB resistance. In field testing, 74 mutant lines were found to have resistance against FHB spread, and 30 of these lines also had low DON content. Subsequent testing over 2 years in controlled greenhouse conditions revealed 10 M6 lines showing significantly lower FHB spread. Seven and 6 of those 10 lines also had reduced DON content and fewer Fusarium-damaged kernels, respectively. Future endeavors will include identification of the mutations that led to resistance in these variants.
Collapse
Affiliation(s)
- Bhavit Chhabra
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD 20742
| | - Lovepreet Singh
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD 20742
| | - Sydney Wallace
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD 20742
| | - Adam Schoen
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD 20742
| | - Yanhong Dong
- Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108
| | - Vijay Tiwari
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD 20742
| | - Nidhi Rawat
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD 20742
| |
Collapse
|
29
|
Yuan Y, Qin L, Su H, Yang S, Wei X, Wang Z, Zhao Y, Li L, Liu H, Tian B, Zhang X. Transcriptome and Coexpression Network Analyses Reveal Hub Genes in Chinese Cabbage ( Brassica rapa L. ssp. pekinensis) During Different Stages of Plasmodiophora brassicae Infection. FRONTIERS IN PLANT SCIENCE 2021; 12:650252. [PMID: 34447397 PMCID: PMC8383047 DOI: 10.3389/fpls.2021.650252] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 07/20/2021] [Indexed: 05/15/2023]
Abstract
Clubroot, caused by the soil-borne protist Plasmodiophora brassicae, is one of the most destructive diseases of Chinese cabbage worldwide. However, the clubroot resistance mechanisms remain unclear. In this study, in both clubroot-resistant (DH40R) and clubroot-susceptible (DH199S) Chinese cabbage lines, the primary (root hair infection) and secondary (cortical infection) infection stages started 2 and 5 days after inoculation (dai), respectively. With the extension of the infection time, cortical infection was blocked and complete P. brassica resistance was observed in DH40R, while disease scales of 1, 2, and 3 were observed at 8, 13, and 22 dai in DH199S. Transcriptome analysis at 0, 2, 5, 8, 13, and 22 dai identified 5,750 relative DEGs (rDEGs) between DH40R and DH199S. The results indicated that genes associated with auxin, PR, disease resistance proteins, oxidative stress, and WRKY and MYB transcription factors were involved in clubroot resistance regulation. In addition, weighted gene coexpression network analysis (WGCNA) identified three of the modules whose functions were highly associated with clubroot-resistant, including ten hub genes related to clubroot resistance (ARF2, EDR1, LOX4, NHL3, NHL13, NAC29, two AOP1, EARLI 1, and POD56). These results provide valuable information for better understanding the molecular regulatory mechanism of Chinese cabbage clubroot resistance.
Collapse
Affiliation(s)
- Yuxiang Yuan
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Graduate T&R Base of Zhengzhou University, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Liuyue Qin
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Graduate T&R Base of Zhengzhou University, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Henan Su
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Graduate T&R Base of Zhengzhou University, Zhengzhou, China
| | - Shuangjuan Yang
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Graduate T&R Base of Zhengzhou University, Zhengzhou, China
| | - Xiaochun Wei
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Graduate T&R Base of Zhengzhou University, Zhengzhou, China
| | - Zhiyong Wang
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Graduate T&R Base of Zhengzhou University, Zhengzhou, China
| | - Yanyan Zhao
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Graduate T&R Base of Zhengzhou University, Zhengzhou, China
| | - Lin Li
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Graduate T&R Base of Zhengzhou University, Zhengzhou, China
| | - Honglei Liu
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Graduate T&R Base of Zhengzhou University, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Baoming Tian
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Xiaowei Zhang
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Graduate T&R Base of Zhengzhou University, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| |
Collapse
|
30
|
Peng H, Neff MM. Two ATAF transcription factors ANAC102 and ATAF1 contribute to the suppression of cytochrome P450-mediated brassinosteroid catabolism in Arabidopsis. PHYSIOLOGIA PLANTARUM 2021; 172:1493-1505. [PMID: 33491178 DOI: 10.1111/ppl.13339] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 12/16/2020] [Accepted: 01/17/2021] [Indexed: 06/12/2023]
Abstract
PHYB ACTIVATION TAGGED SUPPRESSOR 1 (BAS1) and SUPPRESSOR OF PHYB-4 7 (SOB7) are two cytochrome P450 enzymes that inactivate brassinosteroids (BRs) in Arabidopsis. The NAC transcription factor (TF) ATAF2 (ANAC081) and the core circadian clock regulator CIRCADIAN CLOCK ASSOCIATED 1 (CCA1) both suppress the expression of BAS1 and SOB7 via direct promoter binding. Additionally, BRs cause feedback suppression on ATAF2 expression. Here, we report that two ATAF-subgroup TFs, ANAC102 and ATAF1 (ANAC002), also contribute to the transcriptional suppression of BAS1 and SOB7. ANAC102 and ATAF1 gene-knockout mutants exhibit elevated expression of both BAS1 and SOB7, expanded tissue-level accumulation of their protein products and reduced hypocotyl growth in response to exogenous BR treatments. Similar to ATAF2, both ANAC102 and ATAF1 are transcriptionally suppressed by BRs and white light. Neither BAS1 nor SOB7 expression is further elevated in ATAF double or triple mutants, suggesting that the suppression effect of these three ATAFs is not additive. In addition, ATAF single, double, and triple mutants have similar levels of BR responsiveness with regard to hypocotyl elongation. ATAF2, ANAC102, ATAF1, and CCA1 physically interact with itself and each other, suggesting that they may coordinately suppress BAS1 and SOB7 expression via protein-protein interactions. Despite the absence of CCA1-binding elements in their promoters, ANAC102 and ATAF1 have similar transcript circadian oscillation patterns as that of CCA1, suggesting that these two ATAF genes may be indirectly regulated by the circadian clock.
Collapse
Affiliation(s)
- Hao Peng
- Department of Crop and Soil Sciences, Washington State University, Pullman, Washington, USA
| | | |
Collapse
|
31
|
Yanhe Lang. Genome-Wide Identification and Characterization of Yellow Horn (Xanthoceras sorbifolia Bunge) NAC Transcription Factor Gene Family against Diverse Abiotic Stresses. RUSS J GENET+ 2021. [DOI: 10.1134/s1022795421040062] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
32
|
Singh S, Kudapa H, Garg V, Varshney RK. Comprehensive analysis and identification of drought-responsive candidate NAC genes in three semi-arid tropics (SAT) legume crops. BMC Genomics 2021; 22:289. [PMID: 33882825 PMCID: PMC8059324 DOI: 10.1186/s12864-021-07602-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 04/11/2021] [Indexed: 01/24/2023] Open
Abstract
Background Chickpea, pigeonpea, and groundnut are the primary legume crops of semi-arid tropics (SAT) and their global productivity is severely affected by drought stress. The plant-specific NAC (NAM - no apical meristem, ATAF - Arabidopsis transcription activation factor, and CUC - cup-shaped cotyledon) transcription factor family is known to be involved in majority of abiotic stresses, especially in the drought stress tolerance mechanism. Despite the knowledge available regarding NAC function, not much information is available on NAC genes in SAT legume crops. Results In this study, genome-wide NAC proteins – 72, 96, and 166 have been identified from the genomes of chickpea, pigeonpea, and groundnut, respectively, and later grouped into 10 clusters in chickpea and pigeonpea, while 12 clusters in groundnut. Phylogeny with well-known stress-responsive NACs in Arabidopsis thaliana, Oryza sativa (rice), Medicago truncatula, and Glycine max (soybean) enabled prediction of putative stress-responsive NACs in chickpea (22), pigeonpea (31), and groundnut (33). Transcriptome data revealed putative stress-responsive NACs at various developmental stages that showed differential expression patterns in the different tissues studied. Quantitative real-time PCR (qRT-PCR) was performed to validate the expression patterns of selected stress-responsive, Ca_NAC (Cicer arietinum - 14), Cc_NAC (Cajanus cajan - 15), and Ah_NAC (Arachis hypogaea - 14) genes using drought-stressed and well-watered root tissues from two contrasting drought-responsive genotypes of each of the three legumes. Based on expression analysis, Ca_06899, Ca_18090, Ca_22941, Ca_04337, Ca_04069, Ca_04233, Ca_12660, Ca_16379, Ca_16946, and Ca_21186; Cc_26125, Cc_43030, Cc_43785, Cc_43786, Cc_22429, and Cc_22430; Ah_ann1.G1V3KR.2, Ah_ann1.MI72XM.2, Ah_ann1.V0X4SV.1, Ah_ann1.FU1JML.2, and Ah_ann1.8AKD3R.1 were identified as potential drought stress-responsive candidate genes. Conclusion As NAC genes are known to play role in several physiological and biological activities, a more comprehensive study on genome-wide identification and expression analyses of the NAC proteins have been carried out in chickpea, pigeonpea and groundnut. We have identified a total of 21 potential drought-responsive NAC genes in these legumes. These genes displayed correlation between gene expression, transcriptional regulation, and better tolerance against drought. The identified candidate genes, after validation, may serve as a useful resource for molecular breeding for drought tolerance in the SAT legume crops. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07602-5.
Collapse
Affiliation(s)
- Sadhana Singh
- Center of Excellence in Genomics & Systems Biology, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, India
| | - Himabindu Kudapa
- Center of Excellence in Genomics & Systems Biology, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, India.
| | - Vanika Garg
- Center of Excellence in Genomics & Systems Biology, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, India
| | - Rajeev K Varshney
- Center of Excellence in Genomics & Systems Biology, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, India.
| |
Collapse
|
33
|
Fang J, Chai Z, Yao W, Chen B, Zhang M. Interactions between ScNAC23 and ScGAI regulate GA-mediated flowering and senescence in sugarcane. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 304:110806. [PMID: 33568306 DOI: 10.1016/j.plantsci.2020.110806] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 12/03/2020] [Accepted: 12/17/2020] [Indexed: 06/12/2023]
Abstract
Control of gene transcription is crucial to regulate plant growth and development events, such as flowering, leaf senescence, and seed germination. Here we identified a NAC transcription factor (ScNAC23) isolated from sugarcane (cv. ROC22). Analysis by qRT-PCR indicated that ScNAC23 expression was strongly induced in mature leaves and flowering varieties and was also responsive to exogenous treatment with the hormone gibberellin (GA). Ectopic expression of ScNAC23 in Arabidopsis accelerated bolting, flowering, and leaf senescence compared to wild type plants. Furthermore, Arabidopsis overexpressed ScNAC23 were more sensitive to GA than the wild type, and exogenous GA significantly accelerated flowering and senescence in the ScNAC23-overexpressed ones. A direct interaction between ScNAC23 and ScGAI, an inhibitor of GA signaling, was confirmed by yeast-two hybrid, bimolecular fluorescence complementation, and GST-pull down assay. The putative GA-ScNAC23-LFY/SAGs regulator module might provide a new sight into the molecular action of GA to accelerating flowering and leaf senescence in sugarcane.
Collapse
Affiliation(s)
- Jinlan Fang
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi University, Nanning, 530005, China; Guangxi Key Lab for Sugarcane Biology, Guangxi University, Nanning, 530005, China.
| | - Zhe Chai
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi University, Nanning, 530005, China; Guangxi Key Lab for Sugarcane Biology, Guangxi University, Nanning, 530005, China.
| | - Wei Yao
- Guangxi Key Lab for Sugarcane Biology, Guangxi University, Nanning, 530005, China
| | - Baoshan Chen
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi University, Nanning, 530005, China; Guangxi Key Lab for Sugarcane Biology, Guangxi University, Nanning, 530005, China
| | - Muqing Zhang
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi University, Nanning, 530005, China; Guangxi Key Lab for Sugarcane Biology, Guangxi University, Nanning, 530005, China.
| |
Collapse
|
34
|
Wang S, Huang J, Wang X, Fan Y, Liu Q, Han Y. PagERF16 of Populus Promotes Lateral Root Proliferation and Sensitizes to Salt Stress. FRONTIERS IN PLANT SCIENCE 2021; 12:669143. [PMID: 34149765 PMCID: PMC8213033 DOI: 10.3389/fpls.2021.669143] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 04/19/2021] [Indexed: 05/17/2023]
Abstract
The aggravation of soil salinization limits the growth and development of plants. The AP2/ERF transcription factors (TFs) have been identified and play essential roles in plant development and stress response processes. In this study, the function of PagERF16 was detected using the overexpressing (OX) and RNAi transgenic poplar 84K hybrids. Plant growth, stomatal conductance, antioxidant enzymes activity, and PagERF16 co-expressed TFs were analyzed using morphological, physiological, and molecular methods. OX showed a more robust lateral root system with a bigger diameter and volume compared to the wild-type plants (WT). Physiological parameters indicated the bigger stomatal aperture and lower stomatal density of OX along with the lower Catalase (CAT) activity and higher malondialdehyde (MDA) content contributed to the salt sensitivity. The plant height and rooting rate of OX and RNAi were significantly worse compared to WT. Other than that, the morphology and physiology of RNAi plants were similar to WTs, suggesting that the function of PagERF16 may be redundant with other TFs. Our results indicate that when PagERF16 expression is either too high or too low, poplar growth and rooting is negatively affected. In addition, a downstream target TF, NAC45, involved in Auxin biosynthesis, was identified and PagERF16 could directly bind to its promoter to negatively regulate its expression. These results shed new light on the function of ERF TFs in plant root growth and salt stress tolerance.
Collapse
Affiliation(s)
- Shengji Wang
- College of Forestry, Shanxi Agricultural University, Jinzhong, China
| | - Juanjuan Huang
- College of Forestry, Shanxi Agricultural University, Jinzhong, China
| | - Xingdou Wang
- College of Forestry, Shanxi Agricultural University, Jinzhong, China
| | - Yan Fan
- College of Forestry, Shanxi Agricultural University, Jinzhong, China
| | - Qiang Liu
- College of Forestry, Hebei Agricultural University, Baoding, China
| | - Youzhi Han
- College of Forestry, Shanxi Agricultural University, Jinzhong, China
- *Correspondence: Youzhi Han
| |
Collapse
|
35
|
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: 39] [Impact Index Per Article: 9.8] [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.
Collapse
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.)
| |
Collapse
|
36
|
Liang J, Zheng J, Wu Z, Wang H. Strawberry FaNAC2 Enhances Tolerance to Abiotic Stress by Regulating Proline Metabolism. PLANTS (BASEL, SWITZERLAND) 2020; 9:plants9111417. [PMID: 33114021 PMCID: PMC7690739 DOI: 10.3390/plants9111417] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/17/2020] [Accepted: 10/21/2020] [Indexed: 05/28/2023]
Abstract
The quality and yields of strawberry plants are seriously affected by abiotic stress every year. NAC (NAM, ATAF, CUC) transcription factors are plant-specific, having various functions in plant development and response to stress. In our study, FaNAC2 from strawberry (Fragaria × ananassa, cultivar "Benihoppe") was isolated and found to be a member of the ATAF sub-family, belonging to the NAC family of transcription factors. FaNAC2 was strongly expressed in the shoot apical meristem and older leaves of strawberries, and was induced by cold, high salinity, and drought stress. To investigate how FaNAC2 functions in plant responses to abiotic stress, transgenic Nicotiana benthamiana plants ectopically overexpressing FaNAC2 were generated. The transgenic plants grew better under salt and cold stress, and, during simulated drought treatment, these transgenic lines not only grew better, but also showed higher seed germination rates than wild-type plants. Gene expression analysis revealed that key genes in proline biosynthesis pathways were up-regulated in FaNAC2 overexpression lines, while its catabolic pathway genes were down-regulated and proline was accumulated more with the overexpression of FaNAC2 after stress treatments. Furthermore, the gene expression of abscisic acid biosynthesis was also promoted. Our results demonstrate that FaNAC2 plays an important positive role in response to different abiotic stresses and may be further utilized to improve the stress tolerance of strawberry plants.
Collapse
Affiliation(s)
- Jiahui Liang
- Department of Fruit Science, College of Horticulture, China Agricultural University, Beijing 100193, China; (J.L.); (J.Z.)
| | - Jing Zheng
- Department of Fruit Science, College of Horticulture, China Agricultural University, Beijing 100193, China; (J.L.); (J.Z.)
| | - Ze Wu
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China;
| | - Hongqing Wang
- Department of Fruit Science, College of Horticulture, China Agricultural University, Beijing 100193, China; (J.L.); (J.Z.)
| |
Collapse
|
37
|
Sahraei SE, Cleary M, Stenlid J, Brandström Durling M, Elfstrand M. Transcriptional responses in developing lesions of European common ash (Fraxinus excelsior) reveal genes responding to infection by Hymenoscyphus fraxineus. BMC PLANT BIOLOGY 2020; 20:455. [PMID: 33023496 PMCID: PMC7541206 DOI: 10.1186/s12870-020-02656-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 09/22/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND With the expanding ash dieback epidemic that has spread across the European continent, an improved functional understanding of the disease development in afflicted hosts is needed. The study investigated whether differences in necrosis extension between common ash (Fraxinus excelsior) trees with different levels of susceptibility to the fungus Hymenoscyphus fraxineus are associated with, and can be explained by, the differences in gene expression patterns. We inoculated seemingly healthy branches of each of two resistant and susceptible ash genotypes with H. fraxineus grown in a common garden. RESULTS Ten months after the inoculation, the length of necrosis on the resistant genotypes were shorter than on the susceptible genotypes. RNA sequencing of bark samples collected at the border of necrotic lesions and from healthy tissues distal to the lesion revealed relatively limited differences in gene expression patterns between susceptible and resistant genotypes. At the necrosis front, only 138 transcripts were differentially expressed between the genotype categories while 1082 were differentially expressed in distal, non-symptomatic tissues. Among these differentially expressed genes, several genes in the mevalonate (MVA) and iridoid pathways were found to be co-regulated, possibly indicating increased fluxes through these pathways in response to H. fraxineus. Comparison of transcriptional responses of symptomatic and non-symptomatic ash in a controlled greenhouse experiment revealed a relatively small set of genes that were differentially and concordantly expressed in both studies. This gene-set included the rate-limiting enzyme in the MVA pathway and a number of transcription factors. Furthermore, several of the concordantly expressed candidate genes show significant similarity to genes encoding players in the abscisic acid- or Jasmonate-signalling pathways. CONCLUSIONS A set of candidate genes, concordantly expressed between field and greenhouse experiments, was identified. The candidates are associated with hormone signalling and specialized metabolite biosynthesis pathways indicating the involvement of these pathways in the response of the host to infection by H. fraxineus.
Collapse
Affiliation(s)
- Shadi Eshghi Sahraei
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, Uppsala, Sweden
- Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden
| | - Michelle Cleary
- Southern Swedish Forest Research Center, Swedish University of Agricultural Sciences, Alnarp, Sweden
| | - Jan Stenlid
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Mikael Brandström Durling
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Malin Elfstrand
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, Uppsala, Sweden.
| |
Collapse
|
38
|
Nagahage ISP, Sakamoto S, Nagano M, Ishikawa T, Mitsuda N, Kawai-Yamada M, Yamaguchi M. An Arabidopsis NAC domain transcription factor, ATAF2, promotes age-dependent and dark-induced leaf senescence. PHYSIOLOGIA PLANTARUM 2020; 170:299-308. [PMID: 32579231 DOI: 10.1111/ppl.13156] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 06/16/2020] [Accepted: 06/19/2020] [Indexed: 06/11/2023]
Abstract
Leaf senescence is controlled developmentally and environmentally and is affected by numerous genes, including transcription factors. An Arabidopsis NAC domain transcription factor, ATAF2, is known to regulate biotic stress responses. Recently, we have demonstrated that ATAF2 upregulates ORE1, a key regulator of leaf senescence. Here, to investigate the function of ATAF2 in leaf senescence further, we generated and analyzed overexpressing transgenic and T-DNA inserted mutant lines. Transient expression analysis indicated that ATAF2 upregulates several NAC domain transcription factors that regulate senescence. Indeed, ATAF2 overexpression induced the expression of senescence-related genes, thereby accelerating leaf senescence, whereas the expression of such genes in ataf2 mutants was lower than that of wild-type plants. Furthermore, the ataf2 mutants exhibited significant delays in dark-induced leaf senescence. It was also found that ATAF2 induces the expression of transcription factors, which both promotes and represses leaf senescence. The present study demonstrates that ATAF2 promotes leaf senescence in response to developmental and environmental signals.
Collapse
Affiliation(s)
| | - Shingo Sakamoto
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki, Japan
| | - Minoru Nagano
- Graduate School of Science and Engineering, Saitama University, Saitama, Japan
- College of Life Sciences, Ritsumeikan University, Kusatsu, Japan
| | - Toshiki Ishikawa
- Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Nobutaka Mitsuda
- Graduate School of Science and Engineering, Saitama University, Saitama, Japan
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki, Japan
| | - Maki Kawai-Yamada
- Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| | - Masatoshi Yamaguchi
- Graduate School of Science and Engineering, Saitama University, Saitama, Japan
| |
Collapse
|
39
|
Peng H, Phung J, Zhai Y, Neff MM. Self-transcriptional repression of the Arabidopsis NAC transcription factor ATAF2 and its genetic interaction with phytochrome A in modulating seedling photomorphogenesis. PLANTA 2020; 252:48. [PMID: 32892254 DOI: 10.1007/s00425-020-03456-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 08/27/2020] [Indexed: 06/11/2023]
Abstract
The NAC transcription factor ATAF2 suppresses its own transcription via self-promoter binding. ATAF2 genetically interacts with the circadian regulator CCA1 and phytochrome A to modulate seedling photomorphogenesis in Arabidopsis thaliana. ATAF2 (ANAC081) is a NAC (NAM, ATAF and CUC) transcription factor (TF) that participates in the regulation of disease resistance, stress tolerance and hormone metabolism in Arabidopsis thaliana. We previously reported that ATAF2 promotes Arabidopsis hypocotyl growth in a light-dependent manner via transcriptionally suppressing the brassinosteroid (BR)-inactivating cytochrome P450 genes BAS1 (CYP734A1, formerly CYP72B1) and SOB7 (CYP72C1). Assays using low light intensities suggest that the photoreceptor phytochrome A (PHYA) may play a more critical role in ATAF2-regulated photomorphogenesis than phytochrome B (PHYB) and cryptochrome 1 (CRY1). In addition, ATAF2 is also regulated by the circadian clock. The core circadian TF CIRCADIAN CLOCK ASSOCIATED 1 (CCA1) physically interacts with ATAF2 at the DNA-protein and protein-protein levels, and both differentially suppress BAS1- and SOB7-mediated BR catabolism. In this research, we show that ATAF2 can bind its own promoter as a transcriptional self-repressor. This self-feedback-suppression loop is a typical feature of multiple circadian-regulated genes. Additionally, ATAF2 and CCA1 synergistically suppress seedling photomorphogenesis as reflected by the light-dependent hypocotyl growth analysis of their single and double gene knock-out mutants. Similar fluence-rate response assays using ATAF2 and photoreceptor (PHYB, CRY1 and PHYA) knock-out mutants demonstrate that PHYA is required for ATAF2-regulated photomorphogenesis in a wide range of light intensities. Furthermore, disruption of PHYA can suppress the BR-insensitive hypocotyl-growth phenotype of ATAF2 loss-of-function seedlings in the light, but not in darkness. Collectively, our results provide a genetic interaction synopsis of the circadian-clock-photomorphogenesis-BR integration node involving ATAF2, CCA1 and PHYA.
Collapse
Affiliation(s)
- Hao Peng
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA
| | - Jessica Phung
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA
| | - Ying Zhai
- Department of Plant Pathology, Washington State University, Pullman, WA, 99164, USA
| | - Michael M Neff
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA.
| |
Collapse
|
40
|
Zhai Y, Peng H, Neff MM, Pappu HR. Emerging Molecular Links Between Plant Photomorphogenesis and Virus Resistance. FRONTIERS IN PLANT SCIENCE 2020; 11:920. [PMID: 32695129 PMCID: PMC7338571 DOI: 10.3389/fpls.2020.00920] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 06/05/2020] [Indexed: 05/25/2023]
Abstract
Photomorphogenesis refers to photoreceptor-mediated morphological changes in plant development that are triggered by light. Multiple photoreceptors and transcription factors (TFs) are involved in the molecular regulation of photomorphogenesis. Likewise, light can also modulate the outcome of plant-virus interactions since both photosynthesis and many viral infection events occur in the chloroplast. Despite the apparent association between photosynthesis and virus infection, little is known about whether there are also interplays between photomorphogenesis and plant virus resistance. Recent research suggests that plant-virus interactions are potentially regulated by several photoreceptors and photomorphogenesis regulators, including phytochromes A and B (PHYA and PHYB), cryptochromes 2 (CRY2), phototropin 2 (PHOT2), the photomorphogenesis repressor constitutive photomorphogenesis 1 (COP1), the NAM, ATAF, and CUC (NAC)-family TF ATAF2, the Aux/IAA protein phytochrome-associated protein 1 (PAP1), the homeodomain-leucine zipper (HD-Zip) TF HAT1, and the core circadian clock component circadian clock associated 1 (CCA1). Particularly, the plant growth promoting brassinosteroid (BR) hormones play critical roles in integrating the regulatory pathways of plant photomorphogenesis and viral defense. Here, we summarize the current understanding of molecular mechanisms linking plant photomorphogenesis and defense against viruses, which represents an emerging interdisciplinary research topic in both molecular plant biology and virology.
Collapse
Affiliation(s)
- Ying Zhai
- Department of Plant Pathology, Washington State University, Pullman, WA, United States
| | - Hao Peng
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, United States
| | - Michael M. Neff
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, United States
| | - Hanu R. Pappu
- Department of Plant Pathology, Washington State University, Pullman, WA, United States
| |
Collapse
|
41
|
Li H, Ran K, Dong Q, Zhao Q, Shi S. Cloning, sequencing, and expression analysis of 32 NAC transcription factors (MdNAC) in apple. PeerJ 2020; 8:e8249. [PMID: 32411503 PMCID: PMC7210808 DOI: 10.7717/peerj.8249] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 11/20/2019] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND NAC transcription factors play important roles in the regulation of plant growth, development, abiotic and biotic stress responses. The transcriptional level of MdNACs in different tissues and under various biotic and abiotic stress treatments was determined to provide a solid foundation for studying the function of MdNACs. METHODS Thirty-two full-length cDNA sequences of Md NACs were isolated by homologous comparison and RT-PCR confirmation, and the obtained cDNA sequences and the deduced amino acid sequences were analyzed with bioinformatics methods. The prediction of subcellular locations of MdNAC proteins was performed using CELLO v.2.5, PSORT, and SoftBerry ProtComp 9.0. Expression levels of MdNACs were detected in 16 different tissues using an array. Expression patterns of MdNACs were detected in response to Alternaria alternata apple pathotype (AAAP) infection using RNA-seq, and the expression of MdNACs was analyzed under NaCl and mannitol treatments using RT-qPCR. RESULTS The sequencing results produced 32 cDNAs (designated as MdNAC24-39, MdNAC54-65, and MdNAC67-70 with GenBank accession No. MG099861-MG099876, MG099891-MG099902, and MG099904-MG099907, respectively). Phylogenetic analysis revealed that MdNAC34 belonged to the ATAF group, MdNAC63 belonged to the AtNAC3 group, MdNAC24, MdNAC26-30, MdNAC32-33, MdNAC35, MdNAC37-39, MdNAC56-57, MdNAC59-62, MdNAC64-65, and MdNAC67-70 belonged to the NAM group, and MdNAC25, MdNAC36, MdNAC54-55, and MdNAC58 belonged to the VND group. Predictions of subcellular localization showed that MdNAC24-27, MdNAC29-30, MdNAC33-37, MdNAC39, MdNAC54-65, and MdNAC67-70 proteins were located in the nucleus, MdNAC28 proteins were located in the cytoplasm, MdNAC31-32 proteins were located in the nucleus and cytoplasm, and MdNAC38 proteins were located in the nucleus and plasma membrane. Array results indicated that 32 MdNACs were expressed in all examined tissues at various expression levels. RNA-seq results showed that expression levels of MdNAC26-28, MdNAC33-34, MdNAC60, MdNAC62-65, and MdNAC68 were induced, but MdNAC24, MdNAC32, and MdNAC58 were down-regulated in response to AAAP infection. Under salt treatment, MdNAC24, MdNAC27, MdNAC29, MdNAC34, MdNAC37, MdNAC39, MdNAC54, MdNAC59, and MdNAC63 transcription levels were induced. Under mannitol treatment, MdNAC32 and MdNAC54 transcription levels were induced, but MdNAC24, MdNAC28, MdNAC30, MdNAC33, MdNAC35, MdNAC37, MdNAC55, MdNAC56, MdNAC58, and MdNAC59 were down-regulated. Taken together, the results indicated that the cloned MdNAC genes were expressed constitutively in all examined tissues. These genes were up-regulated or down-regulated in response to AAAP infection and to salt or mannitol, which suggested they may be involved in the regulation of growth, development, and stress response in apple.
Collapse
Affiliation(s)
- Huifeng Li
- Shandong Institute of Pomology, Tai'an, China
| | - Kun Ran
- Shandong Institute of Pomology, Tai'an, China
| | - Qinglong Dong
- College of Horticulture, Northwest A and F University, Yangling, China
| | - Qiang Zhao
- College of Horticulture, Qingdao Agricultural University, Qingdao, China
| | - Song Shi
- Nanjing Agricultural University, Nanjing, China
| |
Collapse
|
42
|
Mohanta TK, Yadav D, Khan A, Hashem A, Tabassum B, Khan AL, Abd_Allah EF, Al-Harrasi A. Genomics, molecular and evolutionary perspective of NAC transcription factors. PLoS One 2020; 15:e0231425. [PMID: 32275733 PMCID: PMC7147800 DOI: 10.1371/journal.pone.0231425] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 03/23/2020] [Indexed: 01/05/2023] Open
Abstract
NAC (NAM, ATAF1,2, and CUC2) transcription factors are one of the largest transcription factor families found in the plants and are involved in diverse developmental and signalling events. Despite the availability of comprehensive genomic information from diverse plant species, the basic genomic, biochemical, and evolutionary details of NAC TFs have not been established. Therefore, NAC TFs family proteins from 160 plant species were analyzed in the current study. Study revealed, Brassica napus (410) encodes highest number and Klebsormidium flaccidum (3) encodes the lowest number of TFs. The study further revealed the presence of NAC TF in the Charophyte algae K. flaccidum. On average, the monocot plants encode higher number (141.20) of NAC TFs compared to the eudicots (125.04), gymnosperm (75), and bryophytes (22.66). Furthermore, our analysis revealed that several NAC TFs are membrane bound and contain monopartite, bipartite, and multipartite nuclear localization signals. NAC TFs were also found to encode several novel chimeric proteins and regulate a complex interactome network. In addition to the presence of NAC domain, several NAC proteins were found to encode other functional signature motifs as well. Relative expression analysis of NAC TFs in A. thaliana revealed root tissue treated with urea and ammonia showed higher level of expression and leaf tissues treated with urea showed lower level of expression. The synonymous codon usage is absent in the NAC TFs and it appears that they have evolved from orthologous ancestors and undergone vivid duplications to give rise to paralogous NAC TFs. The presence of novel chimeric NAC TFs are of particular interest and the presence of chimeric NAC domain with other functional signature motifs in the NAC TF might encode novel functional properties in the plants.
Collapse
Affiliation(s)
- Tapan Kumar Mohanta
- Natural and Medicinal Plant Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - Dhananjay Yadav
- Dept. of Medical Biotechnology, Yeungnam University, Gyeongsan, Republic of Korea
| | - Adil Khan
- Natural and Medicinal Plant Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - Abeer Hashem
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
- Mycology and Plant Disease Survey Department, Plant Pathology Research Institute, ARC, Giza, Egypt
| | - Baby Tabassum
- Department of Zoology, Toxicology laboratory, Raza P.G. College, Rampur, Uttar Pradesh, India
| | - Abdul Latif Khan
- Natural and Medicinal Plant Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - Elsayed Fathi Abd_Allah
- Plant Production Department, College of Food and Agricultural Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Ahmed Al-Harrasi
- Natural and Medicinal Plant Sciences Research Center, University of Nizwa, Nizwa, Oman
| |
Collapse
|
43
|
Yang C, Huang Y, Lv W, Zhang Y, Bhat JA, Kong J, Xing H, Zhao J, Zhao T. GmNAC8 acts as a positive regulator in soybean drought stress. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 293:110442. [PMID: 32081255 DOI: 10.1016/j.plantsci.2020.110442] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 02/06/2020] [Accepted: 02/07/2020] [Indexed: 05/18/2023]
Abstract
NAC proteins represent one of the largest transcription factor (TF) families involved in the regulation of plant development and the response to abiotic stress. In the present study, we elucidated the detailed role of GmNAC8 in the regulation of drought stress tolerance in soybean. The GmNAC8 protein was localized in the nucleus, and expression of the GmNAC8 gene was significantly induced in response to drought, abscisic acid (ABA), ethylene (ETH) and salicylic acid (SA) treatments. Thus, we generated GmNAC8 overexpression (OE1 and OE2) and GmNAC8 knockout (KO1 and KO2) lines to determine the role of GmNAC8 in drought stress tolerance. Our results revealed that, compared with the wild type (WT) plant, GmNAC8 overexpression and GmNAC8 knockout lines exhibited significantly higher and lower drought tolerance, respectively. Furthermore, the SOD activity and proline content were significantly higher in the GmNAC8 overexpression lines and significantly lower in the GmNAC8 knockout lines than in the WT plants under drought stress. In addition, GmNAC8 protein was found to physically interact with the drought-induced protein GmDi19-3 in the nucleus. Moreover, the GmDi19-3 expression pattern showed the same trend as the GmNAC8 gene did under drought and hormone (ABA, ETH and SA) treatments, and GmDi19-3 overexpression lines (GmDi19-3-OE9, GmDi19-3-OE10 and GmDi19-3-OE31) showed enhanced drought tolerance compared to that of the WT plants. Hence, the above results indicated that GmNAC8 acts as a positive regulator of drought tolerance in soybean and inferred that GmNAC8 probably functions by interacting with another positive regulatory protein, GmDi19-3.
Collapse
Affiliation(s)
- Chengfeng Yang
- MOA Key Laboratory of Biology and Genetic Improvement of Soybean (General), National Center for Soybean Improvement, State Key Laboratory for Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Yanzhong Huang
- MOA Key Laboratory of Biology and Genetic Improvement of Soybean (General), National Center for Soybean Improvement, State Key Laboratory for Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Wenhuan Lv
- MOA Key Laboratory of Biology and Genetic Improvement of Soybean (General), National Center for Soybean Improvement, State Key Laboratory for Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Yingying Zhang
- MOA Key Laboratory of Biology and Genetic Improvement of Soybean (General), National Center for Soybean Improvement, State Key Laboratory for Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Javaid Akhter Bhat
- MOA Key Laboratory of Biology and Genetic Improvement of Soybean (General), National Center for Soybean Improvement, State Key Laboratory for Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Jiejie Kong
- MOA Key Laboratory of Biology and Genetic Improvement of Soybean (General), National Center for Soybean Improvement, State Key Laboratory for Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Han Xing
- MOA Key Laboratory of Biology and Genetic Improvement of Soybean (General), National Center for Soybean Improvement, State Key Laboratory for Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Jinming Zhao
- MOA Key Laboratory of Biology and Genetic Improvement of Soybean (General), National Center for Soybean Improvement, State Key Laboratory for Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Tuanjie Zhao
- MOA Key Laboratory of Biology and Genetic Improvement of Soybean (General), National Center for Soybean Improvement, State Key Laboratory for Crop Genetics and Germplasm Enhancement, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China.
| |
Collapse
|
44
|
Zhang HX, Feng XH, Ali M, Jin JH, Wei AM, Khattak AM, Gong ZH. Identification of Pepper CaSBP08 Gene in Defense Response Against Phytophthora capsici Infection. FRONTIERS IN PLANT SCIENCE 2020; 11:183. [PMID: 32174944 PMCID: PMC7054287 DOI: 10.3389/fpls.2020.00183] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 02/07/2020] [Indexed: 05/24/2023]
Abstract
Little information is available on the role of Squamosa promoter binding protein (SBP)-box genes in pepper plants. This family of genes is known to have transcription characteristics specific to plants and to regulate plant growth, development, stress responses, and signal transduction. To investigate their specific effects in pepper (Capsicum annuum), we screened pepper SBP-box family genes (CaSBP genes) for Phytophthora capsici (P. capsici) resistance genes using virus-induced gene silencing. CaSBP08, CaSBP11, CaSBP12, and CaSBP13, which are associated with plant defense responses against P. capsici, were obtained from among fifteen identified CaSBP genes. The function of CaSBP08 was identified in pepper defense response against P. capsici infection in particular. CaSBP08 protein was localized to the nucleus. Silencing of CaSBP08 enhanced resistance to P. capsici infection. Following P. capsici inoculation, the malondialdehyde content, peroxidase activity, and disease index percentage of the CaSBP08-silenced plants decreased compared to the control. Additionally, the expression levels of other defense-related genes, especially those of CaBPR1 and CaSAR8.2, were more strongly induced in CaSBP08-silenced plants than in the control. However, CaSBP08 overexpression in Nicotiana benthamiana enhanced susceptibility to P. capsici infection. This work provides a foundation for the further research on the role of CaSBP genes in plant defense responses against P. capsici infection.
Collapse
Affiliation(s)
- Huai-Xia Zhang
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Xiao-Hui Feng
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Muhammad Ali
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Jing-Hao Jin
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Ai-Min Wei
- Tianjin Vegetable Research Center, Tianjin Academy of Agricultural Sciences, Tianjin, China
| | | | - Zhen-Hui Gong
- College of Horticulture, Northwest A&F University, Yangling, China
| |
Collapse
|
45
|
Peng H, Neff MM. CIRCADIAN CLOCK ASSOCIATED 1 and ATAF2 differentially suppress cytochrome P450-mediated brassinosteroid inactivation. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:970-985. [PMID: 31639820 PMCID: PMC6977193 DOI: 10.1093/jxb/erz468] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 10/15/2019] [Indexed: 05/20/2023]
Abstract
Brassinosteroids (BRs) are a group of steroid hormones regulating plant growth and development. Since BRs do not undergo transport among plant tissues, their metabolism is tightly regulated by transcription factors (TFs) and feedback loops. BAS1 (CYP734A1, formerly CYP72B1) and SOB7 (CYP72C1) are two BR-inactivating cytochrome P450s identified in Arabidopsis thaliana. We previously found that a TF ATAF2 (ANAC081) suppresses BAS1 and SOB7 expression by binding to the Evening Element (EE) and CIRCADIAN CLOCK ASSOCIATED 1 (CCA1)-binding site (CBS) on their promoters. Both the EE and CBS are known binding targets of the circadian regulatory protein CCA1. Here, we confirm that CCA1 binds the EE and CBS motifs on BAS1 and SOB7 promoters, respectively. Elevated accumulations of BAS1 and SOB7 transcripts in the CCA1 null mutant cca1-1 indicate that CCA1 is a repressor of their expression. When compared with either cca1-1 or the ATAF2 null mutant ataf2-2, the cca1-1 ataf2-2 double mutant shows higher SOB7 transcript accumulations and a stronger BR-insensitive phenotype of hypocotyl elongation in white light. CCA1 interacts with ATAF2 at both DNA-protein and protein-protein levels. ATAF2, BAS1, and SOB7 are all circadian regulated with distinct expression patterns. These results demonstrate that CCA1 and ATAF2 differentially suppress BAS1- and SOB7-mediated BR inactivation.
Collapse
Affiliation(s)
- Hao Peng
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, USA
| | - Michael M Neff
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, USA
- Correspondence:
| |
Collapse
|
46
|
Jasmonic Acid Signaling Pathway in Response to Abiotic Stresses in Plants. Int J Mol Sci 2020; 21:ijms21020621. [PMID: 31963549 PMCID: PMC7013817 DOI: 10.3390/ijms21020621] [Citation(s) in RCA: 156] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 01/11/2020] [Accepted: 01/16/2020] [Indexed: 12/16/2022] Open
Abstract
Plants as immovable organisms sense the stressors in their environment and respond to them by means of dedicated stress response pathways. In response to stress, jasmonates (jasmonic acid, its precursors and derivatives), a class of polyunsaturated fatty acid-derived phytohormones, play crucial roles in several biotic and abiotic stresses. As the major immunity hormone, jasmonates participate in numerous signal transduction pathways, including those of gene networks, regulatory proteins, signaling intermediates, and proteins, enzymes, and molecules that act to protect cells from the toxic effects of abiotic stresses. As cellular hubs for integrating informational cues from the environment, jasmonates play significant roles in alleviating salt stress, drought stress, heavy metal toxicity, micronutrient toxicity, freezing stress, ozone stress, CO2 stress, and light stress. Besides these, jasmonates are involved in several developmental and physiological processes throughout the plant life. In this review, we discuss the biosynthesis and signal transduction pathways of the JAs and the roles of these molecules in the plant responses to abiotic stresses.
Collapse
|
47
|
Qasim MU, Zhao Q, Shahid M, Samad RA, Ahmar S, Wu J, Fan C, Zhou Y. Identification of QTLs Containing Resistance Genes for Sclerotinia Stem Rot in Brassica napus Using Comparative Transcriptomic Studies. FRONTIERS IN PLANT SCIENCE 2020; 11:776. [PMID: 32655594 PMCID: PMC7325899 DOI: 10.3389/fpls.2020.00776] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 05/15/2020] [Indexed: 05/21/2023]
Abstract
Sclerotinia stem rot is a major disease in Brassica napus that causes yield losses of 10-20% and reaching 80% in severely infected fields. SSR not only causes yield reduction but also causes low oil quality by reducing fatty acid content. There is a need to identify resistant genetic sources with functional significance for the breeding of SSR-resistant cultivars. In this study, we identified 17 QTLs involved in SSR resistance in three different seasons using SNP markers and disease lesion development after artificial inoculation. There were no common QTLs in all 3 years, but there were three QTLs that appeared in two seasons covering all seasons with a shared QTL. The QTLs identified in the 2 years were SRA9a, SRC2a and SRC3a with phenotypic effect variances of 14.75 and 11.57% for SRA9a, 7.49 and 10.38% for SRC3a and 7.73 and 6.81% for SRC2a in their 2 years, respectively. The flowering time was also found to have a negative correlation with disease resistance, i.e., early-maturing lines were more susceptible to disease. The stem width has shown a notably weak effect on disease development, causing researchers to ignore its effect. Given that flowering time is an important factor in disease resistance, we used comparative RNA-sequencing analysis of resistant and susceptible lines with consistent performance in 3 years with almost the same flowering time to identify the resistance genes directly involved in resistance within the QTL regions. Overall, there were more genes differentially expressed in resistant lines 19,970 than in susceptible lines 3936 compared to their mock-inoculated lines, demonstrating their tendency to cope with disease. We identified 36 putative candidate genes from the resistant lines that were upregulated in resistant lines compared to resistant mock and susceptible lines that might be involved in resistance to SSR.
Collapse
Affiliation(s)
- Muhammad Uzair Qasim
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Qing Zhao
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Muhammad Shahid
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Rana Abdul Samad
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Sunny Ahmar
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jian Wu
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou, China
| | - Chuchuan Fan
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yongming Zhou
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
- *Correspondence: Yongming Zhou,
| |
Collapse
|
48
|
Mahmood K, Zeisler-Diehl VV, Schreiber L, Bi YM, Rothstein SJ, Ranathunge K. Overexpression of ANAC046 Promotes Suberin Biosynthesis in Roots of Arabidopsis thaliana. Int J Mol Sci 2019; 20:ijms20246117. [PMID: 31817232 PMCID: PMC6940730 DOI: 10.3390/ijms20246117] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 11/27/2019] [Accepted: 12/02/2019] [Indexed: 01/09/2023] Open
Abstract
NAC (NAM (no apical meristem), ATAF1/2, and CUC2 (cup-shaped cotyledon)) proteins are one of the largest families of plant-specific transcription factors, and this family is present in a wide range of land plants. Here, we have investigated the role of ANAC046 in the regulation of suberin biosynthesis and deposition in Arabidopsis. Subcellular localization and transcriptional activity assays showed that ANAC046 localizes in the nucleus, where it functions as a transcription activator. Analysis of the PANAC046:GUS lines revealed that ANAC046 is mainly expressed in the root endodermis and periderm, and is also induced in leaves by wounding. The transgenic lines overexpressing ANAC046 exhibited defective surfaces on the aerial plant parts compared to the wild-type (WT) as characterized by increased permeability for Toluidine blue stain and greater chlorophyll leaching. Quantitative RT-PCR analysis showed that the expression of suberin biosynthesis genes was significantly higher in the roots and leaves of overexpression lines compared to the WT. The biochemical analysis of leaf cuticular waxes showed that the overexpression lines accumulated 30% more waxes than the WT. Concurrently, overexpression lines also deposited almost twice the amount of suberin content in their roots compared with the WT. Taken together, these results showed that ANAC046 is an important transcription factor that promotes suberin biosynthesis in Arabidopsis thaliana roots.
Collapse
Affiliation(s)
- Kashif Mahmood
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON N1G2W1, Canada; (K.M.); (Y.-M.B.); (S.J.R.)
- Noble Research Institute, Limited Liability Company (LLC), 2510 Sam Noble Parkway, Ardmore, OK 73401, USA
| | - Viktoria Valeska Zeisler-Diehl
- Department of Plant Ecophysiology, Institute of Cellular and Molecular Botany, University of Bonn, Kirschallee 1, 53115 Bonn, Germany; (V.V.Z.-D.); (L.S.)
| | - Lukas Schreiber
- Department of Plant Ecophysiology, Institute of Cellular and Molecular Botany, University of Bonn, Kirschallee 1, 53115 Bonn, Germany; (V.V.Z.-D.); (L.S.)
| | - Yong-Mei Bi
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON N1G2W1, Canada; (K.M.); (Y.-M.B.); (S.J.R.)
| | - Steven J. Rothstein
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON N1G2W1, Canada; (K.M.); (Y.-M.B.); (S.J.R.)
| | - Kosala Ranathunge
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON N1G2W1, Canada; (K.M.); (Y.-M.B.); (S.J.R.)
- School of Biological Sciences, University of Western Australia, 35 Stirling Highway, Crawly, Perth, WA 6009, Australia
- Correspondence: ; Tel.: +61-8-6488-2047
| |
Collapse
|
49
|
Zhu J, Wang J, Li Q, Wang J, Liu Y, Li J, Chen L, Shi Y, Li S, Zhang Y, Liu X, Ma C, Liu H, Wen Y, Sun Z, Chang H, Wang N, Li C, Yin Z, Hu Z, Wu X, Jiang H, Liu C, Qi Z, Chen Q, Xin D. QTL analysis of nodule traits and the identification of loci interacting with the type III secretion system in soybean. Mol Genet Genomics 2019; 294:1049-1058. [PMID: 30982151 DOI: 10.1007/s00438-019-01553-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 03/25/2019] [Indexed: 12/16/2022]
Abstract
Symbiotic nitrogen fixation is the main source of nitrogen for soybean growth. Since the genotypes of rhizobia and soybean germplasms vary, the nitrogen-fixing ability of soybean after inoculation also varies. A few studies have reported that quantitative trait loci (QTLs) control biological nitrogen fixation traits, even soybean which is an important crop. The present study reported that the Sinorhizobium fredii HH103 gene rhcJ belongs to the tts (type III secretion) cluster and that the mutant HH103ΩrhcJ can clearly decrease the number of nodules in American soybeans. However, few QTLs of nodule traits have been identified. This study used a soybean (Glycine max (L.) Merr.) 'Charleston' × 'Dongnong 594' (C × D, n = 150) recombinant inbred line (RIL). Nodule traits were analysed in the RIL population after inoculation with S. fredii HH103 and the mutant HH103ΩrhcJ. Plants were grown in a greenhouse with a 16-h light cycle at 26 °C and an 8-h dark cycle at 18 °C. Then, 4 weeks after inoculation, plants were harvested for evaluation of nodule traits. Through QTL mapping, 16 QTLs were detected on 8 chromosomes. Quantitative PCR (qRT-PCR) and RNA-seq analysis determined that the genes Glyma.04g060600, Glyma.18g159800 and Glyma.13g252600 might interact with rhcJ.
Collapse
Affiliation(s)
- Jingyi Zhu
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Jinhui Wang
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Qingying Li
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Jieqi Wang
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Yang Liu
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Jianyi Li
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Lin Chen
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Yan Shi
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Shuping Li
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Yongqian Zhang
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Xueying Liu
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Chao Ma
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Hanxi Liu
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Yingnan Wen
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Zhijun Sun
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Huilin Chang
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
- Suihua Branch of Heilongjiang Academy of Agricultural Sciences, Suihua, China
| | - Nannan Wang
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Candong Li
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Zhengong Yin
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
- Crop Breeding Institute, Heilongjiang Academy of Agricultural Sciences, Harbin, Heilongjiang, People's Republic of China
| | - Zhenbang Hu
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Xiaoxia Wu
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Hongwei Jiang
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Chunyan Liu
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China
| | - Zhaoming Qi
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China.
| | - Qingshan Chen
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China.
| | - Dawei Xin
- Key Laboratory of Soybean Biology of Chinese Ministry of Education, Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry, College of Science, Northeast Agricultural University, Harbin, Heilongjiang, People's Republic of China.
| |
Collapse
|
50
|
Joshi R, Paul M, Kumar A, Pandey D. Role of calreticulin in biotic and abiotic stress signalling and tolerance mechanisms in plants. Gene 2019; 714:144004. [PMID: 31351124 DOI: 10.1016/j.gene.2019.144004] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 07/23/2019] [Accepted: 07/23/2019] [Indexed: 12/12/2022]
Abstract
Calreticulin (CRT) is calcium binding protein of endoplasmic reticulum (ER) which performs plethora of functions besides it's role as molecular chaperone. Among the three different isoforms of this protein, CRT3 is most closely related to primitive CRT gene of higher plants. Based on their distinct structural and functional organisation, the plant CRTs have been known to contain three different domains: N, P and the C domain. The domain organisation and various biochemical characterstics of plant and animal CRTs are common with the exception of some differences. In plant calreticulin, the important N-glycosylation site(s) are replaced by the glycan chain(s) and several consensus sequences for in vitro phosphorylation by protein kinase CK2 (casein kinase-2), are also present unlike the animal calreticulin. Biotic and abiotic stresses play a significant role in bringing down the crop production. The role of various phytohormones in defense against fungal pathogens is well documented. CRT3 has been reported to play important role in protecting the plants against fungal and bacterial pathogens and in maintaining plant innate immunity. There is remarkable crosstalk between CRT mediated signalling and biotic, abiotic stress, and phytohormone mediated signalling pathways The role of CRT mediated pathway in mitigating biotic and abiotic stress can be further explored in plants so as to strategically modify it for development of stress tolerant plants.
Collapse
Affiliation(s)
- Rini Joshi
- Department of Molecular Biology and Genetic Engineering, College of Basic Sciences & Humanities, G. B. Pant University of Ag.& Tech., Pantnagar 263145, Uttarakhand, India
| | - Meenu Paul
- Department of Molecular Biology and Genetic Engineering, College of Basic Sciences & Humanities, G. B. Pant University of Ag.& Tech., Pantnagar 263145, Uttarakhand, India
| | - Anil Kumar
- Rani Laxmi Bai Central Agriculture University, Jhansi, Uttar Pradesh 284003, India
| | - Dinesh Pandey
- Department of Molecular Biology and Genetic Engineering, College of Basic Sciences & Humanities, G. B. Pant University of Ag.& Tech., Pantnagar 263145, Uttarakhand, India.
| |
Collapse
|