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Li XM, Chen X, Zhao DG. Overexpression of the Eucommia ulmoides chitinase EuCHIT73.88 gene improves tobacco disease resistance. Gene 2024:148619. [PMID: 38821325 DOI: 10.1016/j.gene.2024.148619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 05/17/2024] [Accepted: 05/28/2024] [Indexed: 06/02/2024]
Abstract
Black shank disease is the main disease affecting tobacco crops worldwide, and the main impacted by the disease are the stem base and root. At present, transgenic technology is an effective method to improve plant disease resistance through transgenic technology. In this study, the EuCHIT73.88 gene was cloned from Eucommia ulmoides Oliver (E. ulmoides) by using RT-PCR. The full length of the gene was 897 bp, encoding 298 amino acid residues. An overexpression vector of from the EuCHIT73.88 gene driven by the 35S promoter was constructed and transferred into tobacco plants via transgenic technology. After inoculation with the black shank pathogen, the number of visible lesions on the stems and leaves of the transgenic tobacco variety EuCHIT73.88 was significantly shorter than that on the stems and leaves of the of wild type (WT) and empty vector (EV) plants, and the lesion area was significantly smaller than on the stems and leaves of the WT and EV plants. With increasing inoculation time, introduction of the WT and EV vectors was obviously lethal, whereas transgenic tobacco only exhibited wilted characteristics, and the stems were black, which indicated that the EuCHIT73.88 gene could improve the resistance of tobacco to black shank disease. Furthermore, the activity of protective enzymes and the gene expression of resistance-related proteins were measured. The results showed that compared with those of the WT and EV plants, the CAT and POD activities of the TP tobacco plants were greater, peaking at 72 h at concentrations of 446.87 U/g and 4562.24 U/g, which were 1.63 and 1.61 times greater than those of the WT and EV plants, respectively. This indicated that CAT and POD may be involved in the process of disease resistance of in the transgenic plants. The MDA content of the transgenic tobacco plants was significantly lower than that of the WT and EV plants with increasing EuCHIT73.88 expression, thus indicating that the overexpression of the transgenic EuCHIT73.88 gene could alleviate the levels of lipid peroxidation and reduce the damage to plant cell membranes. The expression of disease-related protein genes (PR2, PR5, PR1a, PDF1.2 and MLP423) was significantly greater in the EuCHIT73.88 ransgenic tobacco than in the WT and EV-transgenic tobacco. and these findings consistently showed that EuCHIT73.88 could improve the resistance to black shank.
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Affiliation(s)
- Xiao-Man Li
- Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, College of Life Sciences/Institute of Agro-bioengineering, Guiyang 550025, China
| | - Xi Chen
- Plant Conservation Technology Center, Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
| | - De-Gang Zhao
- Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, College of Life Sciences/Institute of Agro-bioengineering, Guiyang 550025, China; Plant Conservation Technology Center, Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China.
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2
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Khatoon K, Warsi ZI, Singh A, Singh K, Khan F, Singh P, Shukla RK, Verma RS, Singh MK, Verma SK, Husain Z, Parween G, Singh P, Afroz S, Rahman LU. Bridging fungal resistance and plant growth through constitutive overexpression of Thchit42 gene in Pelargonium graveolens. PLANT CELL REPORTS 2024; 43:147. [PMID: 38771491 DOI: 10.1007/s00299-024-03233-8] [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: 03/14/2024] [Accepted: 05/06/2024] [Indexed: 05/22/2024]
Abstract
KEY MESSAGE Thchit42 constitutive expression for fungal resistance showed synchronisation with leaf augmentation and transcriptome analysis revealed the Longifolia and Zinc finger RICESLEEPER gene is responsible for plant growth and development. Pelargonium graveolens essential oil possesses significant attributes, known for perfumery and aromatherapy. However, optimal yield and propagation are predominantly hindered by biotic stress. All biotechnological approaches have yet to prove effective in addressing fungal resistance. The current study developed transgenic geranium bridging molecular mechanism of fungal resistance and plant growth by introducing cassette 35S::Thchit42. Furthermore, 120 independently putative transformed explants were regenerated on kanamycin fortified medium. Primarily transgenic lines were demonstrated peak pathogenicity and antifungal activity against formidable Colletotrichum gloeosporioides and Fusarium oxysporum. Additionally, phenotypic analysis revealed ~ 2fold increase in leaf size and ~ 2.1fold enhanced oil content. To elucidate the molecular mechanisms for genotypic cause, de novo transcriptional profiles were analyzed to indicate that the auxin-regulated longifolia gene is accountable for augmentation in leaf size, and zinc finger (ZF) RICESLEEPER attributes growth upregulation. Collectively, data provides valuable insights into unravelling the mechanism of Thchit42-mediated crosstalk between morphological and chemical alteration in transgenic plants. This knowledge might create novel opportunities to cultivate fungal-resistant geranium throughout all seasons to fulfil demand.
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Affiliation(s)
- Kahkashan Khatoon
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Zafar Iqbal Warsi
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Akanksha Singh
- Division of Crop Production and Protection, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Kajal Singh
- Division of Crop Production and Protection, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Feroz Khan
- Technology Dissemination and Computational Biology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Palak Singh
- Technology Dissemination and Computational Biology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Rakesh Kumar Shukla
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
| | - Ram Swaroop Verma
- Phytochemistry Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Munmun K Singh
- Phytochemistry Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India
| | - Sanjeet K Verma
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
| | - Zakir Husain
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
| | - Gazala Parween
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
| | - Pooja Singh
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
| | - Shama Afroz
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India
| | - Laiq Ur Rahman
- Plant Tissue Culture Lab, Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, Uttar Pradesh, 226015, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India.
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De Oliveira IB, Alves SDS, Ferreira MM, Santos AS, Farias KS, Assis ETCDM, Mora-Ocampo IY, Muñoz JJM, Costa EA, Gramacho KP, Pirovani CP. Apoplastomes of contrasting cacao genotypes to witches' broom disease reveals differential accumulation of PR proteins. FRONTIERS IN PLANT SCIENCE 2024; 15:1387153. [PMID: 38817930 PMCID: PMC11137319 DOI: 10.3389/fpls.2024.1387153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 04/23/2024] [Indexed: 06/01/2024]
Abstract
Witches' broom disease (WBD) affects cocoa trees (Theobroma cacao L.) and is caused by the fungus Moniliophthora perniciosa that grows in the apoplast in its biotrophic phase and later progresses into the tissues, causing serious losses in the production of cocoa beans. Therefore, the apoplast of T. cacao can provide important defense responses during the interaction with M. perniciosa. In this work, the protein profile of the apoplast of the T. cacao genotypes Catongo, susceptible to WBD, and CCN-51, resistant one, was evaluated. The leaves of T. cacao were collected from asymptomatic plants grown in a greenhouse (GH) and from green witches' brooms grown under field (FD) conditions for extraction of apoplastic washing fluid (AWF). AWF was used in proteomic and enzymatic analysis. A total of 14 proteins were identified in Catongo GH and six in Catongo FD, with two proteins being common, one up-accumulated, and one down-accumulated. In CCN-51, 19 proteins were identified in the GH condition and 13 in FD, with seven proteins being common, one up-accumulated, and six down-accumulated. Most proteins are related to defense and stress in both genotypes, with emphasis on pathogenesis-related proteins (PR): PR-2 (β-1,3-glucanases), PR-3 and PR-4 (chitinases), PR-5 (thaumatine), PR-9 (peroxidases), and PR-14 (lipid transfer proteins). Furthermore, proteins from microorganisms were detected in the AWF. The enzymatic activities of PR-3 showed a significant increase (p < 0.05) in Catongo GH and PR-2 activity (p < 0.01) in CCN-51 FD. The protein profile of the T. cacao apoplastome offers insight into the defense dynamics that occur in the interaction with the fungus M. perniciosa and offers new insights in exploring future WBD control strategies.
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Affiliation(s)
- Ivina Barbosa De Oliveira
- Departamento de Ciências Biológicas (DCB), Centro de Biotecnologia e Genética (CBG), Universidade Estadual de Santa Cruz (UESC), Ilhéus, Bahia, Brazil
| | - Saline dos Santos Alves
- Departamento de Ciências Biológicas (DCB), Centro de Biotecnologia e Genética (CBG), Universidade Estadual de Santa Cruz (UESC), Ilhéus, Bahia, Brazil
| | - Monaliza Macêdo Ferreira
- Departamento de Ciências Biológicas (DCB), Centro de Biotecnologia e Genética (CBG), Universidade Estadual de Santa Cruz (UESC), Ilhéus, Bahia, Brazil
| | - Ariana Silva Santos
- Departamento de Ciências Biológicas (DCB), Centro de Biotecnologia e Genética (CBG), Universidade Estadual de Santa Cruz (UESC), Ilhéus, Bahia, Brazil
| | - Keilane Silva Farias
- Departamento de Ciências Biológicas (DCB), Centro de Biotecnologia e Genética (CBG), Universidade Estadual de Santa Cruz (UESC), Ilhéus, Bahia, Brazil
| | | | - Irma Yuliana Mora-Ocampo
- Departamento de Ciências Biológicas (DCB), Centro de Biotecnologia e Genética (CBG), Universidade Estadual de Santa Cruz (UESC), Ilhéus, Bahia, Brazil
| | - Jonathan Javier Mucherino Muñoz
- Departamento de Ciências Biológicas (DCB), Centro de Biotecnologia e Genética (CBG), Universidade Estadual de Santa Cruz (UESC), Ilhéus, Bahia, Brazil
| | - Eduardo Almeida Costa
- Departamento de Ciências Biológicas (DCB), Centro de Biotecnologia e Genética (CBG), Universidade Estadual de Santa Cruz (UESC), Ilhéus, Bahia, Brazil
| | - Karina Peres Gramacho
- Molecular Plant Pathology Laboratory, Centro de Pesquisa do Cacau (CEPEC/CEPLAC), Ilhéus, Bahia, Brazil
| | - Carlos Priminho Pirovani
- Departamento de Ciências Biológicas (DCB), Centro de Biotecnologia e Genética (CBG), Universidade Estadual de Santa Cruz (UESC), Ilhéus, Bahia, Brazil
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Javed T, Wang W, Yang B, Shen L, Sun T, Gao SJ, Zhang S. Pathogenesis related-1 proteins in plant defense: regulation and functional diversity. Crit Rev Biotechnol 2024:1-9. [PMID: 38719539 DOI: 10.1080/07388551.2024.2344583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 03/20/2024] [Indexed: 05/14/2024]
Abstract
Climate change-related environmental stresses can negatively impact crop productivity and pose a threat to sustainable agriculture. Plants have a remarkable innate ability to detect a broad array of environmental cues, including stresses that trigger stress-induced regulatory networks and signaling pathways. Transcriptional activation of plant pathogenesis related-1 (PR-1) proteins was first identified as an integral component of systemic acquired resistance in response to stress. Consistent with their central role in immune defense, overexpression of PR-1s in diverse plant species is frequently used as a marker for salicylic acid (SA)-mediated defense responses. Recent advances demonstrated how virulence effectors, SA signaling cascades, and epigenetic modifications modulate PR-1 expression in response to environmental stresses. We and others showed that transcriptional regulatory networks involving PR-1s could be used to improve plant resilience to stress. Together, the results of these studies have re-energized the field and provided long-awaited insights into a possible function of PR-1s under extreme environmental stress.
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Affiliation(s)
- Talha Javed
- National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, China
| | - Wenzhi Wang
- National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, China
- Hainan Yazhou Bay Seed Lab, Sanya, China
| | - Benpeng Yang
- National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, China
| | - Linbo Shen
- National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, China
| | - Tingting Sun
- National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, China
| | - San-Ji Gao
- National Engineering Research Center for Sugarcane, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Shuzhen Zhang
- National Key Laboratory for Tropical Crop Breeding, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, China
- Hainan Yazhou Bay Seed Lab, Sanya, China
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Mogazy AM, Abdallah WE, Mohamed HI, Omran AAA. The efficacy of chemical inducers and fungicides in controlling tomato root rot disease caused by Rhizoctoniasolani. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 210:108669. [PMID: 38685150 DOI: 10.1016/j.plaphy.2024.108669] [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: 01/10/2024] [Revised: 03/29/2024] [Accepted: 04/25/2024] [Indexed: 05/02/2024]
Abstract
Chitosan is an environmentally friendly natural substance that is used in crop disease management as an alternative to chemical pesticides. A significant issue restricting output in Egypt is root rot, which is a disease, caused by Rhizoctonia solani. Therefore, a greenhouse experiment was conducted to assess the effects of R. solani on 60-day-old tomato plants under fungal infection and to determine the antifungal activity of chitosan and Rizolax T fungicide against the pathogenic fungus. The findings demonstrated that 4 g/L of chitosan seed application completely obstructed the radial mycelial growth of R. solani and decreased the disease severity. Pathogenic infection significantly decreased morphological characteristics and total chlorophyll but significantly increased carotenoid, total thiol, non-protein thiol, protein thiol, antioxidant enzymes, oxidative stress, total phenolic, total flavonoid, and isoflavone compared to healthy plants. Tomato plants treated with chitosan exhibited lower rates of oxidative stress, but higher levels of all previously mentioned parameters compared to untreated infected plants. The number and molecular mass of protein banding patterns varied in all treated tomato plants as compared to the healthy control. There are 42 bands in the treatments, and their polymorphism rate is 69.55%. Moreover, the number and density of α- and β-esterase, and peroxidase isozymes in treated tomato plants exhibited varied responses. Moreover, in treated and control plants, chitosan treatment raised the expression levels of phenylalanine ammonia-lyase, pathogenesis-related protein-1, β-1,3-glucanases and chitinase. In conclusions, chitosan reduces R. solani infection by controlling the biochemical and molecular mechanisms in tomato plants during infection.
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Affiliation(s)
- Asmaa M Mogazy
- Biological and Geological Sciences Department, Faculty of Education, Ain Shams University, Cairo, 11341, Egypt
| | - Wafaa E Abdallah
- Biological and Geological Sciences Department, Faculty of Education, Ain Shams University, Cairo, 11341, Egypt
| | - Heba I Mohamed
- Biological and Geological Sciences Department, Faculty of Education, Ain Shams University, Cairo, 11341, Egypt.
| | - Ahmed A A Omran
- Biological and Geological Sciences Department, Faculty of Education, Ain Shams University, Cairo, 11341, Egypt
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6
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Domes HS, Debener T. Genome-Wide Analysis of the WRKY Transcription Factor Family in Roses and Their Putative Role in Defence Signalling in the Rose-Blackspot Interaction. PLANTS (BASEL, SWITZERLAND) 2024; 13:1066. [PMID: 38674474 PMCID: PMC11054901 DOI: 10.3390/plants13081066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/26/2024] [Accepted: 04/06/2024] [Indexed: 04/28/2024]
Abstract
WRKY transcription factors are important players in plant regulatory networks, where they control and integrate various physiological processes and responses to biotic and abiotic stresses. Here, we analysed six rose genomes of 5 different species (Rosa chinensis, R. multiflora, R. roxburghii, R. sterilis, and R. rugosa) and extracted a set of 68 putative WRKY genes, extending a previously published set of 58 WRKY sequences based on the R. chinensis genome. Analysis of the promoter regions revealed numerous motifs related to induction by abiotic and, in some cases, biotic stressors. Transcriptomic data from leaves of two rose genotypes inoculated with the hemibiotrophic rose black spot fungus Diplocarpon rosae revealed the upregulation of 18 and downregulation of 9 of these WRKY genes after contact with the fungus. Notably, the resistant genotype exhibited the regulation of 25 of these genes (16 upregulated and 9 downregulated), while the susceptible genotype exhibited the regulation of 20 genes (15 upregulated and 5 downregulated). A detailed RT-qPCR analysis of RcWRKY37, an orthologue of AtWRKY75 and FaWRKY1, revealed induction patterns similar to those of the pathogenesis-related (PR) genes induced in salicylic acid (SA)-dependent defence pathways in black spot inoculation experiments. However, the overexpression of RcWRKY37 in rose petals did not induce the expression of any of the PR genes upon contact with black spot. However, wounding significantly induced the expression of RcWRKY37, while heat, cold, or drought did not have a significant effect. This study provides the first evidence for the role of RcWRKY37 in rose signalling cascades and highlights the differences between RcWRKY37 and AtWRKY75. These results improve our understanding of the regulatory function of WRKY transcription factors in plant responses to stress factors. Additionally, they provide foundational data for further studies.
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Affiliation(s)
- Helena Sophia Domes
- Department of Molecular Plant Breeding, Institute for Plant Genetics, Leibniz Universität Hannover, 30419 Hannover, Germany
- Julius Kühn-Institut, Federal Research Centre for Cultivated Plants, Institute for National and International Plant Health, 38104 Braunschweig, Germany
| | - Thomas Debener
- Department of Molecular Plant Breeding, Institute for Plant Genetics, Leibniz Universität Hannover, 30419 Hannover, Germany
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Wang X, Wei C, Huang H, Kang J, Long R, Chen L, Li M, Yang Q. The GARP family transcription factor MtHHO3 negatively regulates salt tolerance in Medicago truncatula. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 209:108542. [PMID: 38531119 DOI: 10.1016/j.plaphy.2024.108542] [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: 08/25/2023] [Revised: 01/31/2024] [Accepted: 03/16/2024] [Indexed: 03/28/2024]
Abstract
High salinity is one of the detrimental environmental factors restricting plant growth and crop production throughout the world. This study demonstrated that the GARP family transcription factor MtHHO3 is involved in response to salt stress and abscisic acid (ABA) signaling in Medicago truncatula. The transcription of MtHHO3 was repressed by salt, osmotic stress, and ABA treatment. The seed germination assay showed that, overexpression of MtHHO3 in Arabidopsis thaliana caused hypersensitivity to salt and osmotic stress, but increased resistance to ABA inhibition. Overexpression of MtHHO3 in M. truncatula resulted in decreased tolerance of salinity, while loss-of-function mutants mthho3-1 and mthho3-2 were more resistant to salt stress compared with wild-type plants. qRT-PCR analyses showed that MtHHO3 downregulated the expression of genes in stress and ABA responsive pathways. We further demonstrated that MtHHO3 repressed the transcription of the pathogenesis-related gene MtPR2 by binding to its promoter. Overall, these results indicate that MtHHO3 negatively regulates salt stress response in plants and deepen our understanding of the role of the GARP subfamily transcription factors in modulating salt stress and ABA signaling.
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Affiliation(s)
- Xue Wang
- Institute of Animal Science, The Chinese Academy of Agricultural Sciences, Beijing, 10019, China.
| | - Chunxue Wei
- Institute of Animal Science, The Chinese Academy of Agricultural Sciences, Beijing, 10019, China
| | - Hongmei Huang
- Institute of Animal Science, The Chinese Academy of Agricultural Sciences, Beijing, 10019, China
| | - Junmei Kang
- Institute of Animal Science, The Chinese Academy of Agricultural Sciences, Beijing, 10019, China
| | - Ruicai Long
- Institute of Animal Science, The Chinese Academy of Agricultural Sciences, Beijing, 10019, China
| | - Lin Chen
- Institute of Animal Science, The Chinese Academy of Agricultural Sciences, Beijing, 10019, China
| | - Mingna Li
- Institute of Animal Science, The Chinese Academy of Agricultural Sciences, Beijing, 10019, China
| | - Qingchuan Yang
- Institute of Animal Science, The Chinese Academy of Agricultural Sciences, Beijing, 10019, China.
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Paul S, Parvez SS, Goswami A, Banik A. Exopolysaccharides from agriculturally important microorganisms: Conferring soil nutrient status and plant health. Int J Biol Macromol 2024; 262:129954. [PMID: 38336329 DOI: 10.1016/j.ijbiomac.2024.129954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 08/10/2023] [Accepted: 02/01/2024] [Indexed: 02/12/2024]
Abstract
A wide variety of microorganisms secretes extracellular polymeric substances or commonly known as exopolysaccharides (EPS), which have been studied to influence plant growth via various mechanisms. EPS-producing microorganisms have been found to have positive effects on plant health such as by facilitating nutrient entrapment in the soil, or by improving soil quality, especially by helping in mitigating various abiotic stress conditions. The various types of microbial polysaccharides allow for the compartmentalization of the microbial community enabling them to endure undressing stress conditions. With the growing population, there is a constant need for developing sustainable agriculture where we could use various PGPR to help the plant cope with various stress conditions and simultaneously enhance the crop yield. These polysaccharides have also found application in various sectors, especially in the biomedical fields, manifesting their potential to act as antitumor drugs, play a significant role in immune evasion, and reveal various therapeutic potentials. These constitute high levels of bioactive polysaccharides which possess a wide range of implementation starting from industrial applications to novel food applications. In this current review, we aim at presenting a comprehensive study of how these microbial extracellular polymeric substances influence agricultural productivity along with their other commercial applications.
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Affiliation(s)
- Sushreeta Paul
- Laboratory of Microbial Interaction, Institute of Health Sciences, Presidency University, Kolkata, West Bengal, India
| | - Sk Soyal Parvez
- Laboratory of Microbial Interaction, Institute of Health Sciences, Presidency University, Kolkata, West Bengal, India
| | - Anusree Goswami
- Laboratory of Microbial Interaction, Institute of Health Sciences, Presidency University, Kolkata, West Bengal, India
| | - Avishek Banik
- Laboratory of Microbial Interaction, Institute of Health Sciences, Presidency University, Kolkata, West Bengal, India.
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Adss IA, Al-Huqail AA, Khan F, El-Shamy SS, Amer GM, Hafez EE, Ibrahim OM, Sobhy SE, Saleh AA. Physio-molecular responses of tomato cultivars to biotic stress: Exploring the interplay between Alternaria alternata OP881811 infection and plant defence mechanisms. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 207:108421. [PMID: 38335887 DOI: 10.1016/j.plaphy.2024.108421] [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: 11/20/2023] [Revised: 01/18/2024] [Accepted: 02/02/2024] [Indexed: 02/12/2024]
Abstract
Plant fungal diseases impose a formidable challenge for global agricultural productivity, a meticulous examination of host-pathogen interactions. In this intricate study, an exhaustive investigation was conducted on infected tomatoes obtained from Egyptian fields, leading to the precise molecular identification of the fungal isolate as Alternaria alternata (OP881811), and the isolate showed high identity with Chinese isolates (ON973896 and ON790502). Subsequently, fourteen diverse tomato cultivars; Cv Ferment, Cv 103, Cv Damber, Cv 186, Cv 4094, Cv Angham, Cv N 17, Cv Gesma, Cv 010, Cv branch, cv 2020, Cv 023, Cv Gana and Cv 380 were meticulously assessed to discern their susceptibility levels upon inoculation with Alternaria alternata. Thorough scrutiny of disease symptom manifestation and the extent of tomato leaf damage ensued, enabling a comprehensive evaluation of cultivar responses. Results unveiled a spectrum of plant susceptibility, with three cultivars exhibiting heightened vulnerability (Cv Ferment, Cv 103 and Cv Damber), five cultivars displaying moderate susceptibility (Cv 186, Cv 4094, Cv Angham, Cv N 17 and Cv Gesma), and six cultivars demonstrating remarkable resilience to the pathogen (Cv 010, Cv branch, cv, 2020; Cv 023, Cv Gana and Cv 380). In order to gain a thorough understanding of the underlying physiological patterns indicative of plant resistance against A. alternata, an in-depth exploration of polyphenols, flavonoids, and antioxidant enzymes ensued. These key indicators were closely examined, offering valuable insights into the interplay between plant physiology and pathogen response. Robust correlations emerged, with higher contents of these compounds correlating with heightened susceptibility, while lower levels were indicative of enhanced plant tolerance. In tandem with the physiological assessment, a thorough investigation of four pivotal defensive genes (PR5, PPO, PR3, and POX) was undertaken, employing cutting-edge Real-Time PCR technology. Gene expression profiles displayed intriguing variations across the evaluated tomato cultivars, ultimately facilitating the classification of cultivars into distinct groups based on their levels of resistance, moderate susceptibility, or heightened sensitivity. By unravelling the intricate dynamics of plant susceptibility, physiological responses, and patterns of gene expression, this comprehensive study paves the way for targeted strategies to combat plant fungal diseases. The findings contribute valuable insights into host-pathogen interactions and empower agricultural stakeholders with the knowledge required to fortify crop resilience and safeguard global food security.
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Affiliation(s)
- Ibrahim A Adss
- Division of Genetics, Faculty of Agriculture, Damanhur University, Al-Beheira, Egypt.
| | - Asma A Al-Huqail
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Faheema Khan
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Sawsan S El-Shamy
- Division of Plant Pathology, Faculty of Agriculture, Damanhur University, Al-Beheira, Egypt.
| | - Ghoname M Amer
- Division of Plant Pathology, Faculty of Agriculture, Damanhur University, Al-Beheira, Egypt.
| | - Elsayed E Hafez
- Plant Protection and Bimolecular Diagnosis Department, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications, New Borg El-Arab, 21934, Egypt.
| | - Omar M Ibrahim
- Department of Medicine, Washington University School of Medicine, St Louis, MO, 63110, USA.
| | - Sherien E Sobhy
- Plant Protection and Bimolecular Diagnosis Department, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications, New Borg El-Arab, 21934, Egypt.
| | - Ahmed A Saleh
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China; Animal and Fish Production Department, Faculty of Agriculture (Al-Shatby), Alexandria University, Alexandria City, 11865, Egypt.
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10
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López-Coria M, Guzmán-Chávez F, Carvente-García R, Muñoz-Chapul D, Sánchez-Sánchez T, Arciniega-Ruíz JM, King-Díaz B, Sánchez-Nieto S. Maize plant expresses SWEET transporters differently when interacting with Trichoderma asperellum and Fusarium verticillioides, two fungi with different lifestyles. FRONTIERS IN PLANT SCIENCE 2023; 14:1253741. [PMID: 37828934 PMCID: PMC10565004 DOI: 10.3389/fpls.2023.1253741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 09/05/2023] [Indexed: 10/14/2023]
Abstract
Most Trichoderma species are beneficial fungi that promote plant growth and resistance, while Fusarium genera cause several crop damages. During the plant-fungi interaction there is a competition for sugars in both lifestyles. Here we analyzed the plant growth promotion and biocontrol activity of T. asperellum against F. verticillioides and the effect of both fungi on the expression of the maize diffusional sugar transporters, the SWEETs. The biocontrol activity was done in two ways, the first was by observing the growth capacity of both fungus in a dual culture. The second one by analyzing the infection symptoms, the chlorophyl content and the transcript levels of defense genes determined by qPCR in plants with different developmental stages primed with T. asperellum conidia and challenged with F. verticillioides. In a dual culture, T. asperellum showed antagonist activity against F. verticillioides. In the primed plants a delay in the infection disease was observed, they sustained chlorophyll content even after the infection, and displayed upregulated defense-related genes. Additionally, the T. asperellum primed plants had longer stems than the nonprimed plants. SWEETs transcript levels were analyzed by qPCR in plants primed with either fungus. Both fungi affect the transcript levels of several maize sugar transporters differently. T. asperellum increases the expression of six SWEETs on leaves and two at the roots and causes a higher exudation of sucrose, glucose, and fructose at the roots. On the contrary, F. verticillioides reduces the expression of the SWEETs on the leaves, and more severely when a more aggressive strain is in the plant. Our results suggest that the plant is able to recognize the lifestyle of the fungi and respond accordingly by changing the expression of several genes, including the SWEETs, to establish a new sugar flux.
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Affiliation(s)
| | | | | | | | | | | | | | - Sobeida Sánchez-Nieto
- Dpto. de Bioquímica, Facultad de Química, Conjunto E. Universidad Nacional Autónoma de México, Mexico City, Mexico
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11
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Li X, Xu B, Xu J, Li Z, Jiang C, Zhou Y, Yang Z, Deng M, Lv J, Zhao K. Tomato-Thaumatin-like Protein Genes Solyc08g080660 and Solyc08g080670 Confer Resistance to Five Soil-Borne Diseases by Enhancing β-1,3-Glucanase Activity. Genes (Basel) 2023; 14:1622. [PMID: 37628673 PMCID: PMC10454901 DOI: 10.3390/genes14081622] [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: 07/14/2023] [Revised: 08/11/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
Although thaumatin-like proteins (TLPs) are involved in resistance to a variety of fungal diseases, whether the TLP5 and TLP6 genes in tomato plants (Solanum lycopersicum) confer resistance to the pathogenesis of soil-borne diseases has not been demonstrated. In this study, five soil-borne diseases (fungal pathogens: Fusarium solani, Fusarium oxysporum, and Verticillium dahliae; bacterial pathogens: Clavibacter michiganense subsp. michiganense and Ralstonia solanacearum) were used to infect susceptible "No. 5" and disease-resistant "S-55" tomato cultivars. We found that SlTLP5 and SlTLP6 transcript levels were higher in susceptible cultivars treated with the three fungal pathogens than in those treated with the two bacterial pathogens and that transcript levels varied depending on the pathogen. Moreover, the SlTLP5 and SlTLP6 transcript levels were much higher in disease-resistant cultivars than in disease-susceptible cultivars, and the SlTLP5 and SlTLP6 transcript levels were higher in cultivars treated with the same fungal pathogen than in those treated with bacterial pathogens. SlTLP6 transcript levels were higher than SlTLP5. SlTLP5 and SlTLP6 overexpression and gene-edited transgenic mutants were generated in both susceptible and resistant cultivars. Overexpression and knockout increased and decreased resistance to the five diseases, respectively. Transgenic plants overexpressing SlTLP5 and SlTLP6 inhibited the activities of peroxidase (POD), superoxide dismutase (SOD), ascorbate peroxidase (APX), and catalase (CAT) after inoculation with fungal pathogens, and the activities of POD, SOD, and APX were similar to those of fungi after infection with bacterial pathogens. The activities of CAT were increased, and the activity of β-1,3-glucanase was increased in both the fungal and bacterial treatments. Overexpressed plants were more resistant than the control plants. After SlTLP5 and SlTLP6 knockout plants were inoculated, POD, SOD, and APX had no significant changes, but CAT activity increased and decreased significantly after the fungal and bacterial treatments, contrary to overexpression. The activity of β-1,3-glucanase decreased in the treatment of the five pathogens, and the knocked-out plants were more susceptible to disease than the control. In summary, this study contributes to the further understanding of TLP disease resistance mechanisms in tomato plants.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Kai Zhao
- College of Horticulture and Landscape, Yunnan Agricultural University, Kunming 650201, China; (X.L.); (Z.Y.); (M.D.); (J.L.)
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12
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Guo WL, Yang HL, Zhao JP, Bian SJ, Guo YY, Chen XJ, Li XZ. A pathogenesis-related protein 1 of Cucurbita moschata responds to powdery mildew infection. Front Genet 2023; 14:1168138. [PMID: 37593115 PMCID: PMC10427922 DOI: 10.3389/fgene.2023.1168138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 07/19/2023] [Indexed: 08/19/2023] Open
Abstract
Pumpkin (Cucurbita moschata Duch.) productivity is severely hindered by powdery mildew (PM) worldwide. The causative agent of pumpkin PM is Podosphaera xanthii, a biotrophic fungus. Pathogenesis-related protein 1 (PR1) homolog was previously identified from transcriptomic analysis of a PM-resistant pumpkin. Here, we investigated the effects of CmPR1 gene from pumpkin for resistance to PM. Subcellular localization assay revealed that CmPR1 is a cytoplasmic protein in plants. The expression of CmPR1 gene was strongly induced by P. xanthii inoculation at 48 h and exogenous ethylene (ET), jasmonic acid (JA) and NaCl treatments, but repressed by H2O2 and salicylic acid (SA) treatments. Visual disease symptoms, histological observations of fungal growth and host cell death, and accumulation of H2O2 in transgenic tobacco plants indicated that CmPR1 overexpression significantly enhanced the resistance to Golovinomyces cichoracearum compared to wild type plants during PM pathogens infection, possibly due to inducing cell death and H2O2 accumulation near infected sites. The expression of PR1a was significantly induced in transgenic tobacco plants in response to G. cichoracearum, suggesting that CmPR1 overexpression positively modulates the resistance to PM via the SA signaling pathway. These findings indicate that CmPR1 is a defense response gene in C. moschata and can be exploited to develop disease-resistant crop varieties.
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Affiliation(s)
- Wei-Li Guo
- School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, Xinxiang, China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, China
| | - He-Lian Yang
- School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, Xinxiang, China
| | - Jin-Peng Zhao
- School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, Xinxiang, China
| | - Shi-Jie Bian
- School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, Xinxiang, China
| | - Yan-Yan Guo
- School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, Xinxiang, China
| | - Xue-Jin Chen
- School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, Xinxiang, China
| | - Xin-Zheng Li
- School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, Xinxiang, China
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13
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Filyushin MA, Anisimova OK, Shchennikova AV, Kochieva EZ. DREB1 and DREB2 Genes in Garlic ( Allium sativum L.): Genome-Wide Identification, Characterization, and Stress Response. PLANTS (BASEL, SWITZERLAND) 2023; 12:2538. [PMID: 37447098 DOI: 10.3390/plants12132538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 06/30/2023] [Accepted: 07/02/2023] [Indexed: 07/15/2023]
Abstract
Dehydration-responsive element-binding (DREB) transcription factors (TFs) of the A1 and A2 subfamilies involved in plant stress responses have not yet been reported in Allium species. In this study, we used bioinformatics and comparative transcriptomics to identify and characterize DREB A1 and A2 genes redundant in garlic (Allium sativum L.) and analyze their expression in A. sativum cultivars differing in the sensitivity to cold and Fusarium infection. Eight A1 (AsaDREB1.1-1.8) and eight A2 (AsaDREB2.1-2.8) genes were identified. AsaDREB1.1-1.8 genes located in tandem on chromosome 1 had similar expression patterns, suggesting functional redundancy. AsaDREB2.1-2.8 were scattered on different chromosomes and had organ- and genotype-specific expressions. AsaDREB1 and AsaDREB2 promoters contained 7 and 9 hormone- and stress-responsive cis-regulatory elements, respectively, and 13 sites associated with TF binding and plant development. In both Fusarium-resistant and -sensitive cultivars, fungal infection upregulated the AsaDREB1.1-1.5, 1.8, 2.2, 2.6, and 2.8 genes and downregulated AsaDREB2.5, but the magnitude of response depended on the infection susceptibility of the cultivar. Cold exposure strongly upregulated the AsaDREB1 genes, but downregulated most AsaDREB2 genes. Our results provide the foundation for further functional analysis of the DREB TFs in Allium crops and could contribute to the breeding of stress-tolerant varieties.
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Affiliation(s)
- Mikhail A Filyushin
- Research Center of Biotechnology, Institute of Bioengineering, Russian Academy of Sciences, Leninsky Ave. 33, Bld. 2, Moscow 119071, Russia
| | - Olga K Anisimova
- Research Center of Biotechnology, Institute of Bioengineering, Russian Academy of Sciences, Leninsky Ave. 33, Bld. 2, Moscow 119071, Russia
| | - Anna V Shchennikova
- Research Center of Biotechnology, Institute of Bioengineering, Russian Academy of Sciences, Leninsky Ave. 33, Bld. 2, Moscow 119071, Russia
| | - Elena Z Kochieva
- Research Center of Biotechnology, Institute of Bioengineering, Russian Academy of Sciences, Leninsky Ave. 33, Bld. 2, Moscow 119071, Russia
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14
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Chen L, Ma Y, He T, Chen T, Pan Y, Zhou D, Li X, Lu Y, Wu Q, Wang L. Integrated transcriptome and metabolome analysis unveil the response mechanism in wild rice ( Zizania latifolia griseb.) against sheath rot infection. Front Genet 2023; 14:1163464. [PMID: 37359383 PMCID: PMC10289006 DOI: 10.3389/fgene.2023.1163464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 05/30/2023] [Indexed: 06/28/2023] Open
Abstract
Sheath rot disease (SRD) is one of the most devastating diseases of Manchurian wild rice (MWR) (Zizania latifolia Griseb). Pilot experiments in our laboratory have shown that an MWR cultivar "Zhejiao NO.7"exhibits signs of SRD tolerance. To explore the responses of Zhejiao No. 7 to SRD infection, we used a combined transcriptome and metabolome analysis approach. A total of 136 differentially accumulated metabolites (DAMs, 114 up- and 22 down-accumulated in FA compared to CK) were detected. These up-accumulated metabolites were enriched in tryptophan metabolism, amino acid biosynthesis, flavonoids, and phytohormone signaling. Transcriptome sequencing results showed the differential expression of 11,280 genes (DEGs, 5,933 up-, and 5,347 downregulated in FA compared to CK). The genes expressed in tryptophan metabolism, amino acid biosynthesis, phytohormone biosynthesis and signaling, and reactive oxygen species homeostasis confirmed the metabolite results. In addition, genes related to the cell wall, carbohydrate metabolism, and plant-pathogen interaction (especially hypersensitive response) showed changes in expression in response to SRD infection. These results provide a basis for understanding the response mechanisms in MWR to FA attack that can be used for breeding SRD-tolerant MWR.
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Affiliation(s)
- Limin Chen
- Lishui Institute of Agriculture and Forestry Sciences, Lishui, Zhejiang, China
- State Key Laboratory for Managing Biotic and Chemical Threats to Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection, Ministry of Agriculture and Rural Affairs, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Yamin Ma
- Agricultural and Rural Bureau of Jinyun County, Jinyun, Zhejiang, China
| | - Tianjun He
- Lishui Institute of Agriculture and Forestry Sciences, Lishui, Zhejiang, China
| | - TingTing Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection, Ministry of Agriculture and Rural Affairs, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Yiming Pan
- Lishui Institute of Agriculture and Forestry Sciences, Lishui, Zhejiang, China
| | - Dayun Zhou
- Lishui Institute of Agriculture and Forestry Sciences, Lishui, Zhejiang, China
| | - Xiaowei Li
- State Key Laboratory for Managing Biotic and Chemical Threats to Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection, Ministry of Agriculture and Rural Affairs, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Yaobin Lu
- State Key Laboratory for Managing Biotic and Chemical Threats to Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection, Ministry of Agriculture and Rural Affairs, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Quancong Wu
- Lishui Institute of Agriculture and Forestry Sciences, Lishui, Zhejiang, China
| | - Lailiang Wang
- Lishui Institute of Agriculture and Forestry Sciences, Lishui, Zhejiang, China
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15
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Dos Santos C, Franco OL. Pathogenesis-Related Proteins (PRs) with Enzyme Activity Activating Plant Defense Responses. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12112226. [PMID: 37299204 DOI: 10.3390/plants12112226] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 05/02/2023] [Accepted: 05/09/2023] [Indexed: 06/12/2023]
Abstract
Throughout evolution, plants have developed a highly complex defense system against different threats, including phytopathogens. Plant defense depends on constitutive and induced factors combined as defense mechanisms. These mechanisms involve a complex signaling network linking structural and biochemical defense. Antimicrobial and pathogenesis-related (PR) proteins are examples of this mechanism, which can accumulate extra- and intracellular space after infection. However, despite their name, some PR proteins are present at low levels even in healthy plant tissues. When they face a pathogen, these PRs can increase in abundance, acting as the first line of plant defense. Thus, PRs play a key role in early defense events, which can reduce the damage and mortality caused by pathogens. In this context, the present review will discuss defense response proteins, which have been identified as PRs, with enzymatic action, including constitutive enzymes, β-1,3 glucanase, chitinase, peroxidase and ribonucleases. From the technological perspective, we discuss the advances of the last decade applied to the study of these enzymes, which are important in the early events of higher plant defense against phytopathogens.
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Affiliation(s)
- Cristiane Dos Santos
- S-Inova Biotech, Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande 79117-900, Brazil
| | - Octávio Luiz Franco
- S-Inova Biotech, Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande 79117-900, Brazil
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília 71966-700, Brazil
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16
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Zribi I, Ghorbel M, Haddaji N, Besbes M, Brini F. Genome-Wide Identification and Expression Profiling of Pathogenesis-Related Protein 1 ( PR-1) Genes in Durum Wheat ( Triticum durum Desf.). PLANTS (BASEL, SWITZERLAND) 2023; 12:1998. [PMID: 37653915 PMCID: PMC10223549 DOI: 10.3390/plants12101998] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/03/2023] [Accepted: 05/09/2023] [Indexed: 07/30/2023]
Abstract
Pathogen-related proteins (PRs) are diversified proteins with a low molecular weight implicated in plant response to biotic and abiotic stress as well in regulating different functions in plant maturation. Interestingly, no systematical study has been conducted in durum wheat (Triticum turgidum subsp. durum). In the present study, 12 PR-1 genes encoding a CAP superfamily domain were identified in the genome of Triticum turgidum subsp. durum, which is an important cereal, using in silico approaches. Additionally, phylogenetic analysis showed that the PR-1 genes were classified into three groups based on their isoelectric point and the conserved motif domain. Moreover, our analysis showed that most of the TdPR-1 proteins presented an N-terminal signal peptide. Expression patterns analysis showed that the PR-1 gene family presented temporal and spatial specificity and was induced by different abiotic stresses. This is the first report describing the genome-scale analysis of the durum wheat PR-1 gene family, and these data will help further study the roles of PR-1 genes during stress responses, leading to crop improvement.
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Affiliation(s)
- Ikram Zribi
- Laboratory of Biotechnology and Plant Improvement, Centre of Biotechnology of Sfax, P.O. Box 1177, Sfax 3018, Tunisia;
| | - Mouna Ghorbel
- Department of Biology, College of Sciences, University of Hail, P.O. Box 2440, Ha’il City 81451, Saudi Arabia; (M.G.); (N.H.); (M.B.)
| | - Najla Haddaji
- Department of Biology, College of Sciences, University of Hail, P.O. Box 2440, Ha’il City 81451, Saudi Arabia; (M.G.); (N.H.); (M.B.)
| | - Malek Besbes
- Department of Biology, College of Sciences, University of Hail, P.O. Box 2440, Ha’il City 81451, Saudi Arabia; (M.G.); (N.H.); (M.B.)
| | - Faiçal Brini
- Laboratory of Biotechnology and Plant Improvement, Centre of Biotechnology of Sfax, P.O. Box 1177, Sfax 3018, Tunisia;
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17
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Filyushin MA, Anisimova OK, Shchennikova AV, Kochieva EZ. Genome-Wide Identification, Expression, and Response to Fusarium Infection of the SWEET Gene Family in Garlic ( Allium sativum L.). Int J Mol Sci 2023; 24:ijms24087533. [PMID: 37108694 PMCID: PMC10138969 DOI: 10.3390/ijms24087533] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 04/17/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023] Open
Abstract
Proteins of the SWEET (Sugar Will Eventually be Exported Transporters) family play an important role in plant development, adaptation, and stress response by functioning as transmembrane uniporters of soluble sugars. However, the information on the SWEET family in the plants of the Allium genus, which includes many crop species, is lacking. In this study, we performed a genome-wide analysis of garlic (Allium sativum L.) and identified 27 genes putatively encoding clade I-IV SWEET proteins. The promoters of the A. sativum (As) SWEET genes contained hormone- and stress-sensitive elements associated with plant response to phytopathogens. AsSWEET genes had distinct expression patterns in garlic organs. The expression levels and dynamics of clade III AsSWEET3, AsSWEET9, and AsSWEET11 genes significantly differed between Fusarium-resistant and -susceptible garlic cultivars subjected to F. proliferatum infection, suggesting the role of these genes in the garlic defense against the pathogen. Our results provide insights into the role of SWEET sugar uniporters in A. sativum and may be useful for breeding Fusarium-resistant Allium cultivars.
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Affiliation(s)
- Mikhail A Filyushin
- Federal Research Center "Fundamentals of Biotechnology" of the Russian Academy of Sciences, 119071 Moscow, Russia
| | - Olga K Anisimova
- Federal Research Center "Fundamentals of Biotechnology" of the Russian Academy of Sciences, 119071 Moscow, Russia
| | - Anna V Shchennikova
- Federal Research Center "Fundamentals of Biotechnology" of the Russian Academy of Sciences, 119071 Moscow, Russia
| | - Elena Z Kochieva
- Federal Research Center "Fundamentals of Biotechnology" of the Russian Academy of Sciences, 119071 Moscow, Russia
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18
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Parreño R, Rodríguez-Alcocer E, Martínez-Guardiola C, Carrasco L, Castillo P, Arbona V, Jover-Gil S, Candela H. Turning Garlic into a Modern Crop: State of the Art and Perspectives. PLANTS (BASEL, SWITZERLAND) 2023; 12:1212. [PMID: 36986902 PMCID: PMC10057115 DOI: 10.3390/plants12061212] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/26/2023] [Accepted: 03/02/2023] [Indexed: 06/18/2023]
Abstract
Garlic is cultivated worldwide for the value of its bulbs, but its cultivation is challenged by the infertility of commercial cultivars and the accumulation of pathogens over time, which occurs as a consequence of vegetative (clonal) propagation. In this review, we summarize the state of the art of garlic genetics and genomics, highlighting recent developments that will lead to its development as a modern crop, including the restoration of sexual reproduction in some garlic strains. The set of tools available to the breeder currently includes a chromosome-scale assembly of the garlic genome and multiple transcriptome assemblies that are furthering our understanding of the molecular processes underlying important traits like the infertility, the induction of flowering and bulbing, the organoleptic properties and resistance to various pathogens.
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Affiliation(s)
- Ricardo Parreño
- Instituto de Bioingeniería, Universidad Miguel Hernández, Campus de Elche, 03202 Elche, Spain
| | - Eva Rodríguez-Alcocer
- Instituto de Bioingeniería, Universidad Miguel Hernández, Campus de Elche, 03202 Elche, Spain
| | | | - Lucía Carrasco
- Instituto de Bioingeniería, Universidad Miguel Hernández, Campus de Elche, 03202 Elche, Spain
| | - Purificación Castillo
- Departamento I+D, Coopaman S.C.L., Carretera Peñas De San Pedro, km 1.6, 02006 Albacete, Spain
| | - Vicent Arbona
- Departament de Ciències Agràries i del Medi Natural, Universitat Jaume I, 12071 Castelló de la Plana, Spain
| | - Sara Jover-Gil
- Instituto de Bioingeniería, Universidad Miguel Hernández, Campus de Elche, 03202 Elche, Spain
| | - Héctor Candela
- Instituto de Bioingeniería, Universidad Miguel Hernández, Campus de Elche, 03202 Elche, Spain
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19
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Sng BJR, Van Vu K, Choi IKY, Chin HJ, Jang IC. LONG HYPOCOTYL IN FAR-RED 1 mediates a trade-off between growth and defense under shade in Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2023:erad088. [PMID: 36882154 DOI: 10.1093/jxb/erad088] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Indexed: 06/18/2023]
Abstract
Plants respond to vegetative shade with developmental and physiological changes that is collectively known as shade avoidance syndrome (SAS). Although LONG HYPOCOTYL IN FAR-RED 1 (HFR1) is known to be a negative regulator of SAS by forming heterodimers with other basic helix-loop-helix (bHLH) transcription factors to inhibit them, its function in genome-wide transcriptional regulation is not fully elucidated. Here, we performed RNA-sequencing analyses of hfr1-5 and HFR1 overexpression line (HFR1(ΔN)-OE) to comprehensively identify HFR1-regulated genes at different time points of shade treatment. We found that HFR1 mediates the trade-off between shade-induced growth and shade-repressed defense, by regulating the expression of relevant genes in shade. Genes involved in promoting growth, such as for auxin biosynthesis, transport, signaling and response were induced by shade but suppressed by HFR1 at both short and long durations of shade. Likewise, most ethylene-related genes were shade-induced and HFR1-repressed. On the other hand, shade suppressed defense-related genes while HFR1 induced their expression, especially under long duration of shade treatment. We demonstrated that HFR1 confers increased resistance to bacterial infection under shade.
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Affiliation(s)
- Benny Jian Rong Sng
- Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604, Singapore
- Department of Biological Sciences, National University of Singapore, Singapore 117543, Singapore
| | - Kien Van Vu
- Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604, Singapore
| | - Ian Kin Yuen Choi
- Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604, Singapore
- Department of Biological Sciences, National University of Singapore, Singapore 117543, Singapore
| | - Hui Jun Chin
- Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604, Singapore
| | - In-Cheol Jang
- Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604, Singapore
- Department of Biological Sciences, National University of Singapore, Singapore 117543, Singapore
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20
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Su L, Zhang Y, Yu S, Geng L, Lin S, Ouyang L, Jiang X. RcbHLH59-RcPRs module enhances salinity stress tolerance by balancing Na +/K + through callose deposition in rose ( Rosa chinensis). HORTICULTURE RESEARCH 2023; 10:uhac291. [PMID: 36938564 PMCID: PMC10018784 DOI: 10.1093/hr/uhac291] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 12/22/2022] [Indexed: 06/18/2023]
Abstract
Basic helix-loop-helix (bHLH) proteins play pivotal roles in plant growth, development, and stress responses. However, the molecular and functional properties of bHLHs have not been fully characterized. In this study, a novel XI subgroup of the bHLH protein gene RcbHLH59 was isolated and identified in rose (Rosa sp.). This gene was induced by salinity stress in both rose leaves and roots, and functioned as a transactivator. Accordingly, silencing RcbHLH59 affected the antioxidant system, Na +/K + balance, and photosynthetic system, thereby reducing salt tolerance, while the transient overexpression of RcbHLH59 improved salinity stress tolerance. Additionally, RcbLHLH59 was found to regulate the expression of sets of pathogenesis-related (PR) genes in RcbHLH59-silenced (TRV-RcbHLH59) and RcbHLH59-overexpressing (RcbHLH59-OE) rose plants. The RcPR4/1 and RcPR5/1 transcript levels showed opposite changes in the TRV-RcbHLH59 and RcbHLH59-OE lines, suggesting that these two genes are regulated by RcbHLH59. Further analysis revealed that RcbHLH59 binds to the promoters of RcPR4/1 and RcPR5/1, and that the silencing of RcPR4/1 or RcPR5/1 led to decreased tolerance to salinity stress. Moreover, callose degradation- and deposition-related genes were impaired in RcPR4/1- or RcPR5/1-silenced plants, which displayed a salt tolerance phenotype by balancing the Na+/K+ ratio through callose deposition. Collectively, our data highlight a new RcbLHLH59-RcPRs module that positively regulates salinity stress tolerance by balancing Na+/K+ and through callose deposition in rose plants.
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Affiliation(s)
- Lin Su
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266000, China
| | - Yichang Zhang
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266000, China
| | - Shuang Yu
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266000, China
| | - Lifang Geng
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266000, China
| | - Shang Lin
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266000, China
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21
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Full-Length Transcriptome Characterization and Functional Analysis of Pathogenesis-Related Proteins in Lilium Oriental Hybrid 'Sorbonne' Infected with Botrytis elliptica. Int J Mol Sci 2022; 24:ijms24010425. [PMID: 36613869 PMCID: PMC9820132 DOI: 10.3390/ijms24010425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/17/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
Gray mold (Botrytis elliptica) causes a deleterious fungal disease that decreases the ornamental value and yield of lilies. Lilium oriental hybrid 'Sorbonne' is a variety that is resistant to gray mold. Understanding the mechanism of resistance against B. elliptica infection in 'Sorbonne' can provide a basis for the genetic improvement in lily plants. In this study, a PacBio Sequel II system was used to sequence the full-length transcriptome of Lilium 'Sorbonne' after inoculation with B. elliptica. A total of 46.64 Gb subreads and 19,102 isoforms with an average length of 1598 bp were obtained. A prediction analysis revealed 263 lncRNAs, and 805 transcription factors, 4478 simple sequence repeats, and 17,752 coding sequences were identified. Pathogenesis-related proteins (PR), which may play important roles in resistance against B. elliptica infection, were identified based on the full-length transcriptome data and previously obtained second-generation transcriptome data. Nine non-redundant potential LhSorPR proteins were identified and assigned to two groups that were composed of two LhSorPR4 and seven LhSorPR10 proteins based on their genetic relatedness. The real-time quantitative reverse transcription PCR (qRT-PCR) results showed that the patterns of expression of nine differentially expressed PR genes under B. elliptica stress were basically consistent with the results of transcriptome sequencing. The pattern of expression of LhSorPR4s and LhSorPR10s genes in different tissues was analyzed, and the expression of each gene varied. Furthermore, we verified the function of LhSorPR4-2 gene in Lilium. The expression of LhSorPR4-2 was induced by phytohormones such as methyl jasmonate, salicylic acid, and ethephon. Moreover, the promoter region of LhSorPR4-2 was characterized by several functional domains associated with phytohormones and stress response. The overexpression of LhSorPR4-2 gene in 'Sorbonne' increased the resistance of the lily plant to B. elliptica and correlated with high chitinase activity. This study provides a full-length transcript database and functionally analyzed the resistance of PR gene to B. elliptica in Lilium, thereby introducing the candidate gene LhSorPR4-2 to breed resistance in Lilium.
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Ghorbel M, Besbes M, Haddaji N, Bouali N, Brini F. Identification and Expression Profiling of Two Saudi Arabia Catalase Genes from Wheat and Barley in Response to Abiotic and Hormonal Stresses. Antioxidants (Basel) 2022; 11:2208. [PMID: 36358580 PMCID: PMC9686680 DOI: 10.3390/antiox11112208] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 10/31/2022] [Accepted: 11/03/2022] [Indexed: 07/30/2023] Open
Abstract
Catalase is a crucial enzyme in antioxidant defense systems protecting eukaryotes from oxidative stress. These proteins are present in almost all living organisms and play important roles in controlling plant responses to biotic and abiotic stresses by catalyzing the decomposition of H2O2. Despite their importance, little is known about their expression in the majority of monocotyledonous species. Here, we isolated and characterized two novel catalase genes from Triticum turgidum and Hordeum vulgare, designated as TtCAT1 and HvCAT1, respectively. Phylogenetic analysis revealed that TtCAT1 and HvCAT1 presented 492 aa and shared an important identity with other catalase proteins belonging to subfamily 1. Using bioinformatic analysis, we predicted the 3D structure models of TtCAT1 and HvCAT1. Interestingly, analysis showed that the novel catalases harbor a peroxisomal targeting signal (PTS1) located at their C-terminus portion, as shown for other catalase proteins. In addition, this motif is responsible for the in silico peroxisomal localization of both proteins. Finally, RT-qPCR analysis showed that TtCAT1 and HvCAT1 are highly expressed in leaves in normal conditions but faintly in roots. Moreover, both genes are upregulated after the application of different stresses such as salt, osmotic, cold, heavy metal, and hormonal stresses. The positive responses of TtCAT1 and HvCAT1 to the various stimuli suggested that these proteins can help to protect both species against environmental stresses.
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Affiliation(s)
- Mouna Ghorbel
- Biology Department, Faculty of Science, University of Hail, Ha’il 2440, Saudi Arabia
- Laboratory of Biotechnology and Plant Improvement, Center of Biotechnology of Sfax, Sfax 3018, Tunisia
| | - Malek Besbes
- Biology Department, Faculty of Science, University of Hail, Ha’il 2440, Saudi Arabia
| | - Najla Haddaji
- Biology Department, Faculty of Science, University of Hail, Ha’il 2440, Saudi Arabia
| | - Nouha Bouali
- Biology Department, Faculty of Science, University of Hail, Ha’il 2440, Saudi Arabia
| | - Faiçal Brini
- Laboratory of Biotechnology and Plant Improvement, Center of Biotechnology of Sfax, Sfax 3018, Tunisia
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Qian H, Song L, Wang L, Wang B, Liang W. The secreted FoAPY1 peptidase promotes Fusarium oxysporum invasion. Front Microbiol 2022; 13:1040302. [PMID: 36338032 PMCID: PMC9626516 DOI: 10.3389/fmicb.2022.1040302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 10/06/2022] [Indexed: 11/18/2022] Open
Abstract
The secretion of peptidases from several pathogens has been reported, but the biological function of these proteins in plant-pathogen interactions is poorly understood. Fusarium oxysporum, a soil-borne plant pathogenic fungus that causes Fusarium wilt in its host, can secrete proteins into host plant cells during the infection process to interfere with the host plant defense response and promote disease occurrence. In this study, we identified a peptidase, FoAPY1, that could be secreted from F. oxysporum depending on the N-terminal signal peptide of the protein. FoAPY1 belongs to the peptidase M28 family and exerts peptidase activity in vitro. Furthermore, the FoAYP1 gene knockout strain (∆FoAYP1) presented reduced virulence to tomato plants, but its mycelial growth and conidiation were unchanged. Moreover, FoAYP1 overexpression tomato seedlings exhibited enhanced susceptibility to F. oxysporum and Botrytis cinerea strains. These data demonstrated that FoAYP1 contributes to the virulence of F. oxysporum may through peptidase activity against host plant proteins.
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Affiliation(s)
- Hengwei Qian
- College of Life Sciences, Shandong Normal University, Jinan, China
| | - Limin Song
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China
| | - Lulu Wang
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China
| | - Baoshan Wang
- College of Life Sciences, Shandong Normal University, Jinan, China
| | - Wenxing Liang
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China
- *Correspondence: Wenxing Liang,
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AlHudaib KA, Alanazi NA, Ghorbel M, El-Ganainy SM, Brini F. Isolation and Characterization of a Novel Pathogenesis-Related Protein-1 Gene ( AvPR-1) with Induced Expression in Oat ( Avena sativa L.) during Abiotic and Hormonal Stresses. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11172284. [PMID: 36079666 PMCID: PMC9460936 DOI: 10.3390/plants11172284] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 08/20/2022] [Accepted: 08/27/2022] [Indexed: 05/04/2023]
Abstract
Pathogenesis-related protein-1 (PR-1) plays crucial roles in regulating plant responses to biotic and abiotic stresses. This study aimed to isolate and characterize the first PR-1 (AvPR-1) gene in oat (Avena sativa L.). AvPR-1 presented conserved signal peptide motifs and core amino acid composition in the functional protein domains as the protein sequence of AvPR-1 presented 98.28%, 97.7%, and 95.4% identity with known PR1 proteins isolated from Triticum aestivum PRB1-2-like, Triticum dicoccoides PRB1-2-like, and Aegilops tauschii subsp. tauschii, respectively. Bioinformatic analysis showed that the AvPR-1 protein belongs to the CAP superfamily (PF00188). Secondary and 3D structure analyses of the AvPR-1 protein were also conducted, confirming sequence conservation of PR-1 among studied species. The AvPR-1 protein harbors a calmodulin-binding domain located in its C-terminal part as previously shown for its wheat homolog TdPR1.2. Moreover, gene expression analysis showed that AvPR-1 was induced in response to many abiotic and hormonal stresses especially in leaves after treatment for 48 h. This is the first study exhibiting the expression profiles of the AvPR-1 gene under different stresses in oat.
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Affiliation(s)
- Khalid A. AlHudaib
- Department of Arid Land Agriculture, College of Agriculture and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
- Pests and Plant Diseases Unit, College of Agriculture and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
- Correspondence:
| | - Naimah Asid Alanazi
- Department of Biology, College of Sciences, University of Hail, P.O. Box 2440, Ha’il City 81451, Saudi Arabia
| | - Mouna Ghorbel
- Department of Biology, College of Sciences, University of Hail, P.O. Box 2440, Ha’il City 81451, Saudi Arabia
| | - Sherif Mohamed El-Ganainy
- Department of Arid Land Agriculture, College of Agriculture and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
- Pests and Plant Diseases Unit, College of Agriculture and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
| | - Faiçal Brini
- Laboratory of Biotechnology and Plant Improvement, Center of Biotechnology of Sfax, University of Sfax, P.O. Box 1177, Sfax 3018, Tunisia
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Huang L, Li G, Wang Q, Meng Q, Xu F, Chen Q, Liu F, Hu Y, Luo M. GhCYP710A1 Participates in Cotton Resistance to Verticillium Wilt by Regulating Stigmasterol Synthesis and Plasma Membrane Stability. Int J Mol Sci 2022; 23:ijms23158437. [PMID: 35955570 PMCID: PMC9368853 DOI: 10.3390/ijms23158437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 07/26/2022] [Accepted: 07/27/2022] [Indexed: 11/30/2022] Open
Abstract
Cotton is an important economic crop. Cotton Verticillium wilt caused by Verticillium dahliae seriously damages production. Phytosterols play roles in plant-pathogen interaction. To explore the function and related mechanism of phytosterols in the interaction between Verticillium dahliae and cotton plants, and the resistance to Verticillium wilt, in this study, we analyzed the changes of sterol composition and content in cotton roots infected by Verticillium dahliae, and identified the sterol C22-desaturase gene GhCYP710A1 from upland cotton. Through overexpressing and silencing the gene in cotton plant, and ectopically expressing the gene in Arabidopsis, we characterized the changes of sterol composition and the resistance to Verticillium wilt in transgenic plants. The infection of Verticillium dahliae resulted in the content of total sterol and each sterol category decreasing in cotton root. The ratio of stigmasterol to sitosterol (St/Si) increased, indicating that the conversion of sitosterol to stigmasterol was activated. Consistently, the expression level of GhCYP710A1 was upregulated after infection. The GhCYP710A1 has the conservative domain that is essential for sterol C22-desaturase in plant and is highly expressed in root and stem, and its subcellular location is in the endoplasmic reticulum. The ectopic expression of GhCYP710A1 gene promoted the synthesis of stigmasterol in Arabidopsis. The St/Si value is dose-dependent with the expression level of GhCYP710A1 gene. Meanwhile, the resistance to Verticillium wilt of transgenic Arabidopsis increased and the permeability of cell membrane decreased, and the content of ROS decreased after V991 (a strain of Verticillium dahliae) infection. Consistently, the resistance to Verticillium wilt significantly increased in the transgenic cotton plants overexpressing GhCYP710A1. The membrane permeability and the colonization of V991 strain in transgenic roots were decreased. On the contrary, silencing GhCYP710A1 resulted in the resistance to Verticillium wilt being decreased. The membrane permeability and the colonization of V991 were increased in cotton roots. The expression change of GhCYP710A1 and the content alteration of stigmasterol lead to changes in JA signal transduction, hypersensitivity and ROS metabolism in cotton, which might be a cause for regulating the Verticillium wilt resistance of cotton plant. These results indicated that GhCYP710A1 might be a target gene in cotton resistance breeding.
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Affiliation(s)
- Li Huang
- Key Laboratory of Biotechnology and Crop Quality Improvement of Ministry of Agriculture/Biotechnology Research Center of Southwest University, Chongqing 400716, China; (L.H.); (G.L.); (Q.W.); (Q.M.); (F.X.); (Q.C.); (F.L.); (Y.H.)
| | - Guiming Li
- Key Laboratory of Biotechnology and Crop Quality Improvement of Ministry of Agriculture/Biotechnology Research Center of Southwest University, Chongqing 400716, China; (L.H.); (G.L.); (Q.W.); (Q.M.); (F.X.); (Q.C.); (F.L.); (Y.H.)
| | - Qiaoling Wang
- Key Laboratory of Biotechnology and Crop Quality Improvement of Ministry of Agriculture/Biotechnology Research Center of Southwest University, Chongqing 400716, China; (L.H.); (G.L.); (Q.W.); (Q.M.); (F.X.); (Q.C.); (F.L.); (Y.H.)
| | - Qian Meng
- Key Laboratory of Biotechnology and Crop Quality Improvement of Ministry of Agriculture/Biotechnology Research Center of Southwest University, Chongqing 400716, China; (L.H.); (G.L.); (Q.W.); (Q.M.); (F.X.); (Q.C.); (F.L.); (Y.H.)
| | - Fan Xu
- Key Laboratory of Biotechnology and Crop Quality Improvement of Ministry of Agriculture/Biotechnology Research Center of Southwest University, Chongqing 400716, China; (L.H.); (G.L.); (Q.W.); (Q.M.); (F.X.); (Q.C.); (F.L.); (Y.H.)
| | - Qian Chen
- Key Laboratory of Biotechnology and Crop Quality Improvement of Ministry of Agriculture/Biotechnology Research Center of Southwest University, Chongqing 400716, China; (L.H.); (G.L.); (Q.W.); (Q.M.); (F.X.); (Q.C.); (F.L.); (Y.H.)
- Key Laboratory of Horticulture Science for Southern Mountains Regions of Ministry of Education, College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400716, China
- Academy of Agricultural Sciences of Southwest University, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land of Southwest University, Chongqing 400716, China
| | - Fang Liu
- Key Laboratory of Biotechnology and Crop Quality Improvement of Ministry of Agriculture/Biotechnology Research Center of Southwest University, Chongqing 400716, China; (L.H.); (G.L.); (Q.W.); (Q.M.); (F.X.); (Q.C.); (F.L.); (Y.H.)
| | - Yulin Hu
- Key Laboratory of Biotechnology and Crop Quality Improvement of Ministry of Agriculture/Biotechnology Research Center of Southwest University, Chongqing 400716, China; (L.H.); (G.L.); (Q.W.); (Q.M.); (F.X.); (Q.C.); (F.L.); (Y.H.)
| | - Ming Luo
- Key Laboratory of Biotechnology and Crop Quality Improvement of Ministry of Agriculture/Biotechnology Research Center of Southwest University, Chongqing 400716, China; (L.H.); (G.L.); (Q.W.); (Q.M.); (F.X.); (Q.C.); (F.L.); (Y.H.)
- Correspondence:
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Comparative Transcriptome Analysis of CMV or 2b-Deficient CMV-Infected dcl2dcl4 Reveals the Effects of Viral Infection on Symptom Induction in Arabidopsis thaliana. Viruses 2022; 14:v14071582. [PMID: 35891562 PMCID: PMC9320214 DOI: 10.3390/v14071582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/15/2022] [Accepted: 07/18/2022] [Indexed: 11/17/2022] Open
Abstract
Due to the impaired antiviral RNAi, the dcl2dcl4 (dcl2/4) mutant is highly susceptible to viruses deficient of the viral suppressor of the RNA silencing (VSR) contrast to wild-type Arabidopsis. It was found that more severe disease symptoms were induced in dcl2/4 infected with VSR-deficient CMV (CMV-Δ2b or CMV-2aTΔ2b) compared to wild-type Arabidopsis infected with intact CMV. In order to investigate the underlying mechanism, comparative transcriptome analysis was performed with Col-0 and dcl2/4 that were infected by CMV, CMV-Δ2b and CMV-2aTΔ2b, respectively. Our analysis showed that the systematic infection of CMV, CMV-Δ2b and CMV-2aTΔ2b could cause hypoxia response and reduce photosynthesis. Asymptomatic infections of CMV-Δ2b or CMV-2aTΔ2b in Columbia (Col-0) promoted the expression of cell division-related genes and suppressed the transcription of metabolism and acquired resistance genes. On the other hand, immunity and resistance genes were highly induced, but photosynthesis and polysaccharide metabolism-related genes were suppressed in diseased plants. More interestingly, cell wall reorganization was specifically caused in modestly diseased Col-0 infected by CMV and a strong activation of SA signaling were correspondingly induced in severely diseased dcl2/4 by CMV or CMV mutants. Thus, our research revealed the nature of the Arabidopsis–CMV interaction at the transcriptome level and could provide new clues in symptom development and antiviral defense in plants.
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Anisimova OK, Shchennikova AV, Kochieva EZ, Filyushin MA. Identification of Monodehydroascorbate Reductase (MDHAR) Genes in Garlic (Allium sativum L.) and Their Role in the Response to Fusarium proliferatum Infection. RUSS J GENET+ 2022. [DOI: 10.1134/s1022795422070031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Wang H, Umer MJ, Liu F, Cai X, Zheng J, Xu Y, Hou Y, Zhou Z. Genome-Wide Identification and Characterization of CPR5 Genes in Gossypium Reveals Their Potential Role in Trichome Development. Front Genet 2022; 13:921096. [PMID: 35754813 PMCID: PMC9213653 DOI: 10.3389/fgene.2022.921096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 05/10/2022] [Indexed: 01/18/2023] Open
Abstract
Trichomes protect plants against insects, microbes, herbivores, and abiotic damages and assist seed dispersal. The function of CPR5 genes have been found to be involved in the trichome development but the research on the underlying genetic and molecular mechanisms are extremely limited. Herein, genome wide identification and characterization of CPR5 genes was performed. In total, 26 CPR5 family members were identified in Gossypium species. Phylogenetic analysis, structural characteristics, and synteny analysis of CPR5s showed the conserved evolution relationships of CPR5. The promoter analysis of CPR5 genes revealed hormone, stress, and development-related cis-elements. Gene ontology (GO) enrichment analysis showed that the CPR5 genes were largely related to biological regulation, developmental process, multicellular organismal process. Protein-protein interaction analysis predicted several trichome development related proteins (SIM, LGO, and GRL) directly interacting with CPR5 genes. Further, nine putative Gossypium-miRNAs were also identified, targeting Gossypium CPR5 genes. RNA-Seq data of G. arboreum (with trichomes) and G. herbaceum (with no trichomes) was used to perform the co-expression network analysis. GheCPR5.1 was identified as a hub gene in a co-expression network analysis. RT-qPCR of GheCPR5.1 gene in different tissues suggests that this gene has higher expressions in the petiole and might be a key candidate involved in the trichome development. Virus induced gene silencing of GheCPR5.1 (Ghe02G17590) confirms its role in trichome development and elongation. Current results provide proofs of the possible role of CPR5 genes and provide preliminary information for further studies of GheCPR5.1 functions in trichome development.
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Affiliation(s)
- Heng Wang
- State Key Laboratory of Cotton Biology /Institute of Cotton Research, Chinese Academy of Agricultural Science, Anyang, China
| | - Muhammad Jawad Umer
- State Key Laboratory of Cotton Biology /Institute of Cotton Research, Chinese Academy of Agricultural Science, Anyang, China
| | - Fang Liu
- State Key Laboratory of Cotton Biology /Institute of Cotton Research, Chinese Academy of Agricultural Science, Anyang, China.,School of Agricultural Sciences, Zhengzhou University, Zhengzhou, China.,National Nanfan Research Institute (Sanya), Chinese Academy of Agriculture Sciences, Sanya, China
| | - Xiaoyan Cai
- State Key Laboratory of Cotton Biology /Institute of Cotton Research, Chinese Academy of Agricultural Science, Anyang, China
| | - Jie Zheng
- State Key Laboratory of Cotton Biology /Institute of Cotton Research, Chinese Academy of Agricultural Science, Anyang, China.,National Nanfan Research Institute (Sanya), Chinese Academy of Agriculture Sciences, Sanya, China.,Hainan Yazhou Bay Seed Laboratory, Sanya, China
| | - Yanchao Xu
- State Key Laboratory of Cotton Biology /Institute of Cotton Research, Chinese Academy of Agricultural Science, Anyang, China.,College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yuqing Hou
- State Key Laboratory of Cotton Biology /Institute of Cotton Research, Chinese Academy of Agricultural Science, Anyang, China
| | - Zhongli Zhou
- State Key Laboratory of Cotton Biology /Institute of Cotton Research, Chinese Academy of Agricultural Science, Anyang, China
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FytoSol, a Promising Plant Defense Elicitor, Controls Early Blight (Alternaria solani) Disease in the Tomato by Inducing Host Resistance-Associated Gene Expression. HORTICULTURAE 2022. [DOI: 10.3390/horticulturae8060484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Early blight (EB), caused by the necrotrophic pathogen Alternaria solani, is one of the most common and destructive diseases in the tomato (Solanum lycopersicum L.). The use of fungicides is a prominent tactic used to control EB; however, their undesirable effects on the environment and human health, as well as involvement in the development of resistant strains, have driven researchers to search for new alternatives. Plant defense elicitors are exogenous defense-triggering molecules that induce a plant’s defense system associated with extensive transcriptional- and metabolic reprogramming of the genome and do not cause direct toxicity to phytopathogens. Moreover, 2,6-dichloroisonicotinic acid (INA) was an early-identified and strong plant defense elicitor to various phytopathogens. Recently, the combination of chitosan oligomers and pectin-derived oligogalacturonides that can mimic the induction of plants by a pathogen or damaged-derived molecules (PAMP and DAMP) were characterized as defense elicitors, named FytoSol. In this study, the preventive roles of these two defense elicitors—FytoSol and INA—against EB disease and its molecular basis, were explored. According to the results, FytoSol significantly reduced disease severity by an average of 30% for almost one month with an AUDPC value of 399 compared to the control, which had an AUDPC value of 546. On the contrary, INA did not provide any protection against EB. Gene expression analyses of these two distinct plant defense elicitors indicated that the expression patterns of several SA-, JA-, or ET-pathway-related genes (Pti4, TPK1b, Pto kinase, TomloxD, PRB1-2, SABP2, WRKY33b, WRKY70, PR-5, and PR3) were induced by defense elicitors differently. FytoSol extensively upregulated gene expressions of PR3, downregulated the SA-related defense pathway, and provided remarkable protection against the necrotrophic pathogen Alternaria solani. On the contrary, INA mostly induced genes related to biotrophic and/or hemibiotrophic pathogen protection. Our results indicate that FytoSol is a promising plant defense elicitor against EB and the modes of action of the elicitors are important to characterize their effects against pathogens. Further research may extend the use of defense elicitors as alternatives to pesticides in agriculture.
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Pretreatment with Chitosan Prevents Fusarium Infection and Induces the Expression of Chitinases and β-1,3-Glucanases in Garlic (Allium sativum L.). HORTICULTURAE 2022. [DOI: 10.3390/horticulturae8050383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Fusarium infection decreases the yield of garlic (Allium sativum L.); however, the knowledge about garlic response to fungal attack is limited. Chitosan induces plant defense response to stress conditions. Here, we analyzed the effects of chitosan with low (Ch1, 39 kDa) and medium (Ch2, 135 kDa) molecular weight on Fusarium infection in garlic. Ch1 and Ch2 at concentrations 0.125–0.400 mg/mL suppressed the growth of Fusarium proliferatum cultures in vitro. Pretreatment of garlic bulbs with Ch1 or Ch2 prevented disease symptoms after F. proliferatum inoculation, while exerting early inhibitory and late stimulatory effects on chitinase and β-1,3-glucanase activities. Ch1/Ch2 treatment of garlic already infected with F. proliferatum caused transcriptional upregulation of chitinases and β-1,3-glucanases at the early stage, which was maintained at the late stage in Ch2-treated samples, but not in Ch1-treated samples, where transcriptional inhibition was observed. The stimulatory effect of Ch2 pretreatment on the expression of chitinase and endo-β-1,3-glucanase genes was stronger than that of Ch1 pretreatment, suggesting that Ch2 could be more effective than Ch1 in pre-sowing treatment of garlic bulbs. Our results provide insights into the effects of chitosan on the garlic response to Fusarium, suggesting a novel strategy to protect garlic crop against fungal infection.
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Li L, Zhu XM, Zhang YR, Cai YY, Wang JY, Liu MY, Wang JY, Bao JD, Lin FC. Research on the Molecular Interaction Mechanism between Plants and Pathogenic Fungi. Int J Mol Sci 2022; 23:ijms23094658. [PMID: 35563048 PMCID: PMC9104627 DOI: 10.3390/ijms23094658] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/07/2022] [Accepted: 04/21/2022] [Indexed: 02/01/2023] Open
Abstract
Plant diseases caused by fungi are one of the major threats to global food security and understanding the interactions between fungi and plants is of great significance for plant disease control. The interaction between pathogenic fungi and plants is a complex process. From the perspective of pathogenic fungi, pathogenic fungi are involved in the regulation of pathogenicity by surface signal recognition proteins, MAPK signaling pathways, transcription factors, and pathogenic factors in the process of infecting plants. From the perspective of plant immunity, the signal pathway of immune response, the signal transduction pathway that induces plant immunity, and the function of plant cytoskeleton are the keys to studying plant resistance. In this review, we summarize the current research progress of fungi–plant interactions from multiple aspects and discuss the prospects and challenges of phytopathogenic fungi and their host interactions.
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Affiliation(s)
- Lin Li
- State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (L.L.); (X.-M.Z.); (J.-Y.W.); (J.-D.B.)
| | - Xue-Ming Zhu
- State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (L.L.); (X.-M.Z.); (J.-Y.W.); (J.-D.B.)
| | - Yun-Ran Zhang
- State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro-Products, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (Y.-R.Z.); (Y.-Y.C.); (J.-Y.W.); (M.-Y.L.)
| | - Ying-Ying Cai
- State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro-Products, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (Y.-R.Z.); (Y.-Y.C.); (J.-Y.W.); (M.-Y.L.)
| | - Jing-Yi Wang
- State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro-Products, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (Y.-R.Z.); (Y.-Y.C.); (J.-Y.W.); (M.-Y.L.)
| | - Meng-Yu Liu
- State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro-Products, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (Y.-R.Z.); (Y.-Y.C.); (J.-Y.W.); (M.-Y.L.)
| | - Jiao-Yu Wang
- State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (L.L.); (X.-M.Z.); (J.-Y.W.); (J.-D.B.)
| | - Jian-Dong Bao
- State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (L.L.); (X.-M.Z.); (J.-Y.W.); (J.-D.B.)
| | - Fu-Cheng Lin
- State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (L.L.); (X.-M.Z.); (J.-Y.W.); (J.-D.B.)
- State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro-Products, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (Y.-R.Z.); (Y.-Y.C.); (J.-Y.W.); (M.-Y.L.)
- Correspondence: ; Tel.: +86-571-88404007
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Zhang X, Yang X, He Q, Wang Y, Liang G, Liu T. Genome-wide Identification and Characterization of the GRAS Transcription Factors in Garlic ( Allium sativum L.). FRONTIERS IN PLANT SCIENCE 2022; 13:890052. [PMID: 35498719 PMCID: PMC9039536 DOI: 10.3389/fpls.2022.890052] [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: 03/05/2022] [Accepted: 03/22/2022] [Indexed: 06/14/2023]
Abstract
GRAS transcription factors play crucial roles in plant growth and development and have been widely explored in many plant species. Garlic (Allium sativum L.) is an important crop owing to its edible and medicinal properties. However, no GRAS transcription factors have been identified in this crop. In this study, 46 garlic GRAS genes were identified and assigned to 16 subfamilies using the GRAS members of Arabidopsis thaliana, Oryza sativa, and Amborella trichopoda as reference queries. Expression analysis revealed that garlic GRAS genes showed distinct differences in various garlic tissues, as well as during different growth stages of the bulbs. Five of these 46 genes were identified as DELLA-like protein-encoding genes and three of which, Asa2G00237.1/Asa2G00240.1 and Asa4G02090.1, responded to exogenous GA3 treatment, and showed a significant association between their transcription abundance and bulb traits in 102 garlic accessions, thereby indicating their role in regulating the growth of garlic bulbs. These results will lay a useful foundation for further investigation of the biological functions of GRAS genes and guiding the genetic breeding of garlic in the future.
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Affiliation(s)
- Xueyu Zhang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, China
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
| | - Xiai Yang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, China
| | - Qiaoyun He
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, China
| | - Yanzhou Wang
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, China
| | - Guolu Liang
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
| | - Touming Liu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, China
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Khandagale K, Roylawar P, Kulkarni O, Khambalkar P, Ade A, Kulkarni A, Singh M, Gawande S. Comparative Transcriptome Analysis of Onion in Response to Infection by Alternaria porri (Ellis) Cifferi. FRONTIERS IN PLANT SCIENCE 2022; 13:857306. [PMID: 35481153 PMCID: PMC9036366 DOI: 10.3389/fpls.2022.857306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 03/08/2022] [Indexed: 06/14/2023]
Abstract
Purple blotch (PB) is one of the most destructive foliar diseases of onion and other alliums, caused by a necrotrophic fungal pathogen Alternaria porri. There are no reports on the molecular response of onion to PB infection. To elucidate the response of onion to A. porri infection, we consequently carried out an RNAseq analysis of the resistant (Arka Kalyan; AK) and susceptible (Agrifound rose; AFR) genotype after an artificial infection. Through differential expression analyses between control and pathogen-treated plants, we identified 8,064 upregulated and 248 downregulated genes in AFR, while 832 upregulated and 564 downregulated genes were identified in AK. A further significant reprogramming in the gene expression profile was also demonstrated by a functional annotation analysis. Gene ontology (GO) terms, which are particularly involved in defense responses and signaling, are overrepresented in current analyses such as "oxidoreductase activity," "chitin catabolic processes," and "defense response." Several key plant defense genes were differentially expressed on A. porri infection, which includes pathogenesis-related (PR) proteins, receptor-like kinases, phytohormone signaling, cell-wall integrity, cytochrome P450 monooxygenases, and transcription factors. Some of the genes were exclusively overexpressed in resistant genotype, namely, GABA transporter1, ankyrin repeat domain-containing protein, xyloglucan endotransglucosylase/hydrolase, and PR-5 (thaumatin-like). Antioxidant enzyme activities were observed to be increased after infection in both genotypes but higher activity was found in the resistant genotype, AK. This is the first report of transcriptome profiling in onion in response to PB infection and will serve as a resource for future studies to elucidate the molecular mechanism of onion-A. porri interaction and to improve PB resistance in onions.
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Affiliation(s)
- Kiran Khandagale
- Department of Botany, Savitribai Phule Pune University, Pune, India
| | - Praveen Roylawar
- Department of Botany, Sangamner Nagarpalika Arts, D. J. Malpani Commerce, B. N. Sarda Science College, Sangamner, India
| | - Onkar Kulkarni
- Bioinformatics Centre, Savitribai Phule Pune University, Pune, India
| | | | - Avinash Ade
- Department of Botany, Savitribai Phule Pune University, Pune, India
| | - Abhijeet Kulkarni
- Bioinformatics Centre, Savitribai Phule Pune University, Pune, India
| | - Major Singh
- ICAR-Directorate of Onion and Garlic Research (DOGR), Pune, India
| | - Suresh Gawande
- ICAR-Directorate of Onion and Garlic Research (DOGR), Pune, India
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Anisimova OK, Kochieva EZ, Shchennikova AV, Filyushin MA. Thaumatin-like Protein (TLP) Genes in Garlic (Allium sativum L.): Genome-Wide Identification, Characterization, and Expression in Response to Fusarium proliferatum Infection. PLANTS 2022; 11:plants11060748. [PMID: 35336630 PMCID: PMC8949454 DOI: 10.3390/plants11060748] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/01/2022] [Accepted: 03/10/2022] [Indexed: 11/16/2022]
Abstract
Plant antifungal proteins include the pathogenesis-related (PR)-5 family of fungi- and other stress-responsive thaumatin-like proteins (TLPs). However, the information on the TLPs of garlic (Allium sativum L.), which is often infected with soil Fusarium fungi, is very limited. In the present study, we identified 32 TLP homologs in the A. sativum cv. Ershuizao genome, which may function in the defense against Fusarium attack. The promoters of A. sativumTLP (AsTLP) genes contained cis-acting elements associated with hormone signaling and response to various types of stress, including those caused by fungal pathogens and their elicitors. The expression of AsTLP genes in Fusarium-resistant and -susceptible garlic cultivars was differently regulated by F. proliferatum infection. Thus, in the roots the mRNA levels of AsTLP7–9 and 21 genes were increased in resistant and decreased in susceptible A. sativum cultivars, suggesting the involvement of these genes in the garlic response to F. proliferatum attack. Our results provide insights into the role of TLPs in garlic and may be useful for breeding programs to increase the resistance of Allium crops to Fusarium infections.
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Lin Y, Wang Q, Chen H, Yan N, Wu F, Wang Z, Li C, Liu Y. Genome-wide association mapping of Fusarium crown rot resistance in Aegilops tauschii. FRONTIERS IN PLANT SCIENCE 2022; 13:998622. [PMID: 36247594 PMCID: PMC9562832 DOI: 10.3389/fpls.2022.998622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 08/29/2022] [Indexed: 05/13/2023]
Abstract
Fusarium crown rot (FCR), caused by various Fusarium species, is a primary fungal disease in most wheat-growing regions worldwide. A. tauschii, the diploid wild progenitor of the D-genome of common wheat, is a reservoir of genetic diversity for improving bread wheat biotic and abiotic resistance/tolerance. A worldwide collection of 286 A. tauschii accessions was used to evaluate FCR resistance. Population structure analysis revealed that 115 belonged to the A. tauschii ssp. strangulata subspecies, and 171 belonged to the A. tauschii ssp. tauschii subspecies. Five accessions with disease index values lower than 20 showed moderate resistance to FCR. These five originated from Afghanistan, China, Iran, Uzbekistan, and Turkey, all belonging to the tauschii subspecies. Genome-wide association mapping using 6,739 single nucleotide polymorphisms (SNPs) revealed that two SNPs on chromosome 2D and four SNPs on chromosome 7D were significantly associated with FCR resistance. Almost all FCR resistance alleles were presented in accessions from the tauschii subspecies, and only 4, 11, and 19 resistance alleles were presented in accessions from the strangulata subspecies. Combining phenotypic correlation analysis and genome-wide association mapping confirmed that FCR resistance loci were independent of flowering time, heading date, and plant height in this association panel. Six genes encoding disease resistance-related proteins were selected as candidates for further validation. The identified resistant A. tauschii accessions will provide robust resistance gene sources for breeding FCR-resistant cultivars. The associated loci/genes will accelerate and improve FCR in breeding programs by deploying marker-assisted selection.
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Affiliation(s)
- Yu Lin
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Qing Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Hao Chen
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Ning Yan
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Fangkun Wu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Zhiqiang Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Caixia Li
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Yaxi Liu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Chengdu, China
- Triticeae Research Institute, Sichuan Agricultural University, Chengdu, China
- *Correspondence: Yaxi Liu, ;
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