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Kumari M, Yagnik KN, Gupta V, Singh IK, Gupta R, Verma PK, Singh A. Metabolomics-driven investigation of plant defense response against pest and pathogen attack. PHYSIOLOGIA PLANTARUM 2024; 176:e14270. [PMID: 38566280 DOI: 10.1111/ppl.14270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/27/2024] [Accepted: 02/29/2024] [Indexed: 04/04/2024]
Abstract
The advancement of metabolomics has assisted in the identification of various bewildering characteristics of the biological system. Metabolomics is a standard approach, facilitating crucial aspects of system biology with absolute quantification of metabolites using minimum samples, based on liquid/gas chromatography, mass spectrometry and nuclear magnetic resonance. The metabolome profiling has narrowed the wide gaps of missing information and has enhanced the understanding of a wide spectrum of plant-environment interactions by highlighting the complex pathways regulating biochemical reactions and cellular physiology under a particular set of conditions. This high throughput technique also plays a prominent role in combined analyses of plant metabolomics and other omics datasets. Plant metabolomics has opened a wide paradigm of opportunities for developing stress-tolerant plants, ensuring better food quality and quantity. However, despite advantageous methods and databases, the technique has a few limitations, such as ineffective 3D capturing of metabolites, low comprehensiveness, and lack of cell-based sampling. In the future, an expansion of plant-pathogen and plant-pest response towards the metabolite architecture is necessary to understand the intricacies of plant defence against invaders, elucidation of metabolic pathway operational during defence and developing a direct correlation between metabolites and biotic stresses. Our aim is to provide an overview of metabolomics and its utilities for the identification of biomarkers or key metabolites associated with biotic stress, devising improved diagnostic methods to efficiently assess pest and pathogen attack and generating improved crop varieties with the help of combined application of analytical and molecular tools.
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Affiliation(s)
- Megha Kumari
- Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi, India
- Department of Botany, Hansraj College, University of Delhi, Delhi, India
| | - Kalpesh Nath Yagnik
- Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi, India
- Department of Botany, Hansraj College, University of Delhi, Delhi, India
| | - Vaishali Gupta
- Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi, India
| | - Indrakant K Singh
- Molecular Biology Research Lab, Department of Zoology, Deshbandhu College, University of Delhi, New Delhi, India
| | - Ravi Gupta
- College of General Education, Kookmin University, Seoul, Republic of Korea
| | - Praveen K Verma
- Plant-Immunity Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Archana Singh
- Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi, India
- Department of Botany, Hansraj College, University of Delhi, Delhi, India
- Delhi School of Climate Change and Sustainability, Institution of Eminence, Maharishi Karnad Bhawan, University of Delhi, India
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Jiménez A, López-Martínez R, Martí MC, Cano-Yelo D, Sevilla F. The integration of TRX/GRX systems and phytohormonal signalling pathways in plant stress and development. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 207:108298. [PMID: 38176187 DOI: 10.1016/j.plaphy.2023.108298] [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: 07/26/2023] [Revised: 12/12/2023] [Accepted: 12/19/2023] [Indexed: 01/06/2024]
Abstract
Plant acclimation to changing environmental conditions involves the interaction of different signalling molecules, including reactive oxygen species and hormones. Redox regulation exerted by thioredoxin (TRX) and glutaredoxin (GRX), two oxidoreductases, is emerging as a specific point of control mediating signal transduction pathways associated with plant growth and stress response. Phytohormones are messengers that coordinate plant cell activities to regulate growth, defence, and productivity, although their cross-talk with components of the redox system is less known. The present review focuses on our current knowledge of the interplay that occurs between TRX and GRX systems and phytohormonal signalling pathways in connection with the control of plant development and stress responses. Here, we consider the regulation that phytohormones exert on TRX and GRX systems, as well as the involvement of these redox proteins in the control of phytohormone-mediated signalling pathways.
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Affiliation(s)
- Ana Jiménez
- Abiotic Stress, Production and Quality Laboratory, Department of Stress Biology and Plant Pathology, CEBAS-CSIC, Murcia, Spain.
| | - Raquel López-Martínez
- Abiotic Stress, Production and Quality Laboratory, Department of Stress Biology and Plant Pathology, CEBAS-CSIC, Murcia, Spain.
| | - María Carmen Martí
- Abiotic Stress, Production and Quality Laboratory, Department of Stress Biology and Plant Pathology, CEBAS-CSIC, Murcia, Spain.
| | - Desiré Cano-Yelo
- Abiotic Stress, Production and Quality Laboratory, Department of Stress Biology and Plant Pathology, CEBAS-CSIC, Murcia, Spain.
| | - Francisca Sevilla
- Abiotic Stress, Production and Quality Laboratory, Department of Stress Biology and Plant Pathology, CEBAS-CSIC, Murcia, Spain.
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Yadav M, Panwar R, Rustagi A, Chakraborty A, Roy A, Singh IK, Singh A. Comprehensive and evolutionary analysis of Spodoptera litura-inducible Cytochrome P450 monooxygenase gene family in Glycine max elucidate their role in defense. FRONTIERS IN PLANT SCIENCE 2023; 14:1221526. [PMID: 38023937 PMCID: PMC10654349 DOI: 10.3389/fpls.2023.1221526] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 09/12/2023] [Indexed: 12/01/2023]
Abstract
Plants being sessile organisms and lacking both circulating phagocytic cells and somatic adaptive immune response, have thrived on various defense mechanisms to fend off insect pests and invasion of pathogens. CYP450s are the versatile enzymes, which thwart plants against insect pests by ubiquitous biosynthesis of phytohormones, antioxidants, and secondary metabolites, utilizing them as feeding deterrents and direct toxins. Therefore, a comprehensive analysis of biotic stress-responsive CYPs from Glycine max was performed to ascertain their function against S. litura-infestation. Phylogenetic analysis and evolutionary studies on conserved domains and motifs disclosed the evolutionary correspondence of these GmCYPs with already characterized members of the CYP450 superfamily and close relatedness to Medicago truncatula. These GmCYPs were mapped on 13 chromosomes; they possess 1-8 exons; they have evolved due to duplication and are localized in endoplasmic reticulumn. Further, identification of methyl-jasmonate, salicylic acid, defense responsive and flavonoid biosynthesis regulating cis-acting elements, their interaction with biotic stress regulating proteins and their differential expression in diverse types of tissues, and during herbivory, depicted their responsiveness to biotic stress. Three-dimensional homology modelling of GmCYPs, docking with heme cofactor required for their catalytic activity and enzyme-substrate interactions were performed to understand the functional mechanism of their action. Moreover, to gain insight into their involvement in plant defense, gene expression analysis was evaluated, which revealed differential expression of 11 GmCYPs upon S. litura-infestation, 12 GmCYPs on wounding while foliar spray of ethylene, methyl-jasmonate and salicylic acid differentially regulated 11 GmCYPs, 6 GmCYPs, and 10 GmCYPs respectively. Our study comprehensively analysed the underlying mechanism of GmCYPs function during S. litura-infestation, which can be further utilized for functional characterization to develop new strategies for enhancing soybean resistance to insect pests.
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Affiliation(s)
- Manisha Yadav
- Department of Botany, Hansraj College, University of Delhi, Delhi, India
- J C Bose Center for Plant Genomics, Hansraj College, University of Delhi, Delhi, India
| | - Ruby Panwar
- Department of Botany, Hansraj College, University of Delhi, Delhi, India
- Department of Botany, Gargi College, University of Delhi, Delhi, India
| | - Anjana Rustagi
- Department of Botany, Gargi College, University of Delhi, Delhi, India
| | - Amrita Chakraborty
- EVA 4.0 Unit, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czechia
| | - Amit Roy
- Forest Molecular Entomology Lab, EXTEMIT-K, EVA 4.0, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czechia
| | - Indrakant K. Singh
- Molecular Biology Research Lab, Department of Zoology, Deshbandhu College, University of Delhi, New Delhi, India
| | - Archana Singh
- Department of Botany, Hansraj College, University of Delhi, Delhi, India
- J C Bose Center for Plant Genomics, Hansraj College, University of Delhi, Delhi, India
- Department of Botany, Gargi College, University of Delhi, Delhi, India
- Department of Plant Molecular Biology, University of Delhi, New Delhi, India
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Saxena H, Negi H, Keshan R, Chitkara P, Kumar S, Chakraborty A, Roy A, Singh IK, Singh A. A comprehensive investigation of lipid-transfer proteins from Cicer arietinum disentangles their role in plant defense against Helicoverpa armigera-infestation. Front Genet 2023; 14:1195554. [PMID: 37456660 PMCID: PMC10348895 DOI: 10.3389/fgene.2023.1195554] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 06/19/2023] [Indexed: 07/18/2023] Open
Abstract
Lipid Transfer Proteins (LTPs) play a crucial role in synthesizing lipid barrier polymers and are involved in defense signaling during pest and pathogen attacks. Although LTPs are conserved with multifaceted roles in plants, these are not yet identified and characterized in Cicer arietinum. In this study, a genome-wide analysis of LTPs was executed and their physiochemical properties, biochemical function, gene structure analysis, chromosomal localization, promoter analysis, gene duplication, and evolutionary analysis were performed using in silico tools. Furthermore, tissue-specific expression analysis and gene expression analysis during pest attack was also conducted for the LTPs. A total of 48 LTPs were identified and named as CaLTPs. They were predicted to be small unstable proteins with "Glycolipid transfer protein" and "Alpha-Amylase Inhibitors, Lipid Transfer and Seed Storage" domains, that are translocated to the extracellular region. CaLTPs were predicted to possess 3-4 introns and were located on all the eight chromosomes of chickpea with half of the CaLTPs being localized on chromosomes 4, 5, and 6, and found to be closely related to LTPs of Arabidopsis thaliana and Medicago trancatula. Gene duplication and synteny analysis revealed that most of the CaLTPs have evolved due to tandem or segmental gene duplication and were subjected to purifying selection during evolution. The promoters of CaLTPs had development-related, phytohormone-responsive, and abiotic and biotic stress-related cis-acting elements. A few CaLTP transcripts exhibited differential expression in diverse tissue types, while others showed no/very low expression. Out of 20 jasmonate-regulated CaLTPs, 14 exhibited differential expression patterns during Helicoverpa armigera-infestation, indicating their role in plant defense response. This study identified and characterized CaLTPs from an important legume, C. arietinum, and indicated their involvement in plant defense against H. armigera-infestation, which can be further utilized to explore lipid signaling during plant-pest interaction and pest management.
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Affiliation(s)
- Harshita Saxena
- Department of Botany, Hansraj College, University of Delhi, Delhi, India
- Institute of Plant Breeding, Genetics and Genomics, University of Georgia, Griffin, GA, United States
| | - Harshita Negi
- Department of Botany, Hansraj College, University of Delhi, Delhi, India
- Department of Biological Sciences, University of South Carolina, Columbia, SC, United States
| | - Radhika Keshan
- Department of Botany, Hansraj College, University of Delhi, Delhi, India
| | - Pragya Chitkara
- Bioinformatics Lab, National Institute of Plant Genome Research (NIPGR), New Delhi, India
| | - Shailesh Kumar
- Bioinformatics Lab, National Institute of Plant Genome Research (NIPGR), New Delhi, India
| | - Amrita Chakraborty
- EVA 4.0 Unit, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Suchdol, Czechia
| | - Amit Roy
- Forest Molecular Entomology Lab, EXTEMIT-K, EVA 4.0, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Suchdol, Czechia
| | - Indrakant K. Singh
- Department of Zoology, Deshbandhu College, University of Delhi, New Delhi, India
| | - Archana Singh
- Department of Botany, Hansraj College, University of Delhi, Delhi, India
- Delhi School of Climate Change and Sustainability, Institution of Eminence, University of Delhi, Delhi, India
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Kumari M, Naidu S, Kumari B, Singh IK, Singh A. Comparative transcriptome analysis of Zea mays upon mechanical wounding. Mol Biol Rep 2023; 50:5319-5343. [PMID: 37155015 DOI: 10.1007/s11033-023-08429-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 04/04/2023] [Indexed: 05/10/2023]
Abstract
BACKGROUND Mechanical wounding (MW) is mainly caused due to high wind, sand, heavy rains and insect infestation, leading to damage to crop plants and an increase in the incidences of pathogen infection. Plants respond to MW by altering expression of genes, proteins, and metabolites that help them to cope up with the stress. METHODS AND RESULTS In order to characterize maize transcriptome in response to mechanical wounding, a microarray analysis was executed. The study revealed 407 differentially expressed genes (DEGs) (134 upregulated and 273 downregulated). The upregulated genes were engaged in protein synthesis, transcription regulation, phytohormone signaling-mediated by salicylic acid, auxin, jasmonates, biotic and abiotic stress including bacterial, insect, salt and endoplasmic reticulum stress, cellular transport, on the other hand downregulated genes were involved in primary metabolism, developmental processes, protein modification, catalytic activity, DNA repair pathways, and cell cycle. CONCLUSION The transcriptome data present here can be further utilized for understanding inducible transcriptional response during mechanical injury and their purpose in biotic and abiotic stress tolerance. Furthermore, future study concentrating on the functional characterization of the selected key genes (Bowman Bird trypsin inhibitor, NBS-LRR-like protein, Receptor-like protein kinase-like, probable LRR receptor-like ser/thr-protein kinase, Cytochrome P450 84A1, leucoanthocyanidin dioxygenase, jasmonate O-methyltransferase) and utilizing them for genetic engineering for crop improvement is strongly recommended.
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Affiliation(s)
- Megha Kumari
- Department of Botany, Hansraj College, University of Delhi, Delhi, India
- J C Bose Center for Plant Genomics, Hansraj College, University of Delhi, Delhi, India
| | - Shrishti Naidu
- Department of Botany, Hansraj College, University of Delhi, Delhi, India
- J C Bose Center for Plant Genomics, Hansraj College, University of Delhi, Delhi, India
| | - Babita Kumari
- Department of Botany, Hansraj College, University of Delhi, Delhi, India
- Department of Botany, North-Eastern Hill University, Shillong, India
| | - Indrakant K Singh
- Department of Zoology, Deshbandhu College, University of Delhi, New Delhi, India.
| | - Archana Singh
- Department of Botany, Hansraj College, University of Delhi, Delhi, India.
- J C Bose Center for Plant Genomics, Hansraj College, University of Delhi, Delhi, India.
- Delhi School of Climate Change and Sustainability, Institution of Eminence, Maharishi Karnad Bhawan, University of Delhi, New Delhi, India.
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Negi H, Saxena H, Singh IK, Singh A. Herbivory-inducible lipid-transfer proteins (LTPs) of Cicer arietinum as potential human allergens. J Biomol Struct Dyn 2023; 41:12863-12879. [PMID: 36703620 DOI: 10.1080/07391102.2023.2169353] [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: 11/15/2022] [Accepted: 01/10/2023] [Indexed: 01/28/2023]
Abstract
Lipid-transfer proteins (LTPs) are lipid-binding small proteins, ubiquitously distributed amongst plant kingdom. Apart from their involvement in plant defense, it has also been discovered that they induce allergic reactions in humans. A plethora of LTPs have been identified in vegetables, fruits, pollens, nuts, and latex, among which Pru p 3, a LTP allergen from peach fruit, is extensively studied and exhibits cross-reactivity with potential allergens from different species. In Cicer arietinum, a family of LTPs (CaLTPs) has been identified and their importance in plant defense during Helicoverpa armigera-infestation has been recognized. However, the determination of the allergenicity potential of CaLTPs has not been attempted. In this study, we aim to decipher the allergenicity potential of defense-related CaLTPs. The allergenicity potential prediction, and identification of B-cell epitope binding regions showed that the CaLTPs had conserved domains and B-cell epitopes in the same regions as Prup3 (a marker allergen for LTPs). Using molecular docking and simulations, we observed that the CaLTPs successfully interacted with the Immunoglobin E(IgE)with docking energies ranging from -315.5 to -268.4 and the structures were stabilized within 10 ns of simulation. Through this study, we intend to embellish our present knowledge and understanding of the sensitization and allergenicity potential of CaLTPs.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Harshita Negi
- Department of Botany, Hans Raj College, University of Delhi, Delhi, India
- Department of Biological Sciences, University of South Carolina, Columbia, SC, USA
| | - Harshita Saxena
- Department of Botany, Hans Raj College, University of Delhi, Delhi, India
- Institute of Plant Breeding, Genetics and Genomics, University of Georgia, Griffin, GA, USA
| | - Indrakant K Singh
- Department of Zoology, Deshbandhu College, University of Delhi, New Delhi, India
| | - Archana Singh
- Department of Botany, Hans Raj College, University of Delhi, Delhi, India
- J C Bose Centre for Plant Genomics, Hansraj College, University of Delhi, Delhi, India
- Delhi School of Climate Change and Sustainability, Institution of Eminence, Maharishi Karnad Bhawan, University of Delhi, Delhi, India
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Yadav M, Pandey J, Chakraborty A, Hassan MI, Kundu JK, Roy A, Singh IK, Singh A. A Comprehensive Analysis of Calmodulin-Like Proteins of Glycine max Indicates Their Role in Calcium Signaling and Plant Defense Against Insect Attack. FRONTIERS IN PLANT SCIENCE 2022; 13:817950. [PMID: 35371141 PMCID: PMC8965522 DOI: 10.3389/fpls.2022.817950] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 01/25/2022] [Indexed: 05/09/2023]
Abstract
The calcium (Ca2+) signaling is a crucial event during plant-herbivore interaction, which involves a transient change in cytosolic Ca2+ concentration, which is sensed by Ca2+-sensors, and the received message is transduced to downstream target proteins leading to appropriate defense response. Calmodulin-like proteins (CMLs) are calcium-sensing plant-specific proteins. Although CMLs have been identified in a few plants, they remained uncharacterized in leguminous crop plants. Therefore, a wide-range analysis of CMLs of soybean was performed, which identified 41 true CMLs with greater than 50% similarity with Arabidopsis CMLs. The phylogenetic study revealed their evolutionary relatedness with known CMLs. Further, the identification of conserved motifs, gene structure analysis, and identification of cis-acting elements strongly supported their identity as members of this family and their involvement in stress responses. Only a few Glycine max CMLs (GmCMLs) exhibited differential expression in different tissue types, and rest of them had minimal expression. Additionally, differential expression patterns of GmCMLs were observed during Spodoptera litura-feeding, wounding, and signaling compound treatments, indicating their role in plant defense. The three-dimensional structure prediction, identification of interactive domains, and docking with Ca2+ ions of S. litura-inducible GmCMLs, indicated their identity as calcium sensors. This study on the characterization of GmCMLs provided insights into their roles in calcium signaling and plant defense during herbivory.
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Affiliation(s)
- Manisha Yadav
- Department of Botany, Hansraj College, University of Delhi, New Delhi, India
| | - Jyotsna Pandey
- Department of Botany, Hansraj College, University of Delhi, New Delhi, India
| | - Amrita Chakraborty
- EVA4.0 Unit, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czechia
| | - Md. Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, India
| | - Jiban Kumar Kundu
- Plant Virus and Vector Interactions Group, Crop Research Institute, Prague, Czechia
| | - Amit Roy
- EVA4.0 Unit, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czechia
- *Correspondence: Amit Roy,
| | - Indrakant Kumar Singh
- Molecular Biology Research Laboratory, Department of Zoology, Deshbandhu College, University of Delhi, New Delhi, India
- DBC-i4 Center, Deshbandhu College, University of Delhi, New Delhi, India
- Indrakant Kumar Singh,
| | - Archana Singh
- Department of Botany, Hansraj College, University of Delhi, New Delhi, India
- Archana Singh,
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Singh A, Singh S, Singh R, Kumar S, Singh SK, Singh IK. Dynamics of Zea mays transcriptome in response to a polyphagous herbivore, Spodoptera litura. Funct Integr Genomics 2021; 21:571-592. [PMID: 34415472 DOI: 10.1007/s10142-021-00796-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 06/17/2021] [Accepted: 07/02/2021] [Indexed: 12/01/2022]
Abstract
Zea mays defense response is well-crafted according to the physical and chemical weapons utilized by their invaders during the coevolutionary period. Maize plants employ diversified defense strategies and alter the spatiotemporal distribution of several classes of defensive compounds to affect insect herbivore performance. However, only little knowledge is available about the defense orchestration of maize in response to Spodoptera litura, a voracious Noctuidae pest. In order to decipher the defense status of Zea mays (African tall variety) against S. litura, a comparative feeding bioassay was executed, which revealed reduced performance of the herbivore on maize. In order to understand the molecular mechanism behind maize tolerance against S. litura, a microarray-based genome-wide expression analysis was performed. The comparative analysis displayed 792 differentially expressed genes (DEGs), wherein 357 genes were upregulated and 435 genes were downregulated at fold change ≥ 2 and p value ≤ 0.05. The upregulated genes were identified and categorized as defense-related, oxidative stress-related, transcription regulatory genes, protein synthesis genes, phytohormone-related, and primary and secondary metabolism-related. In contrast, downregulated genes were mainly associated with plant growth and development, indicating a balance of growth and defense response and utilization of a highly evolved C-diversion response were noticed. Maize plants showed better tolerance against herbivory and maintained its fitness using a combinatorial strategy. This peculiar response of Zea mays against S. litura offers an excellent possibility of managing polyphagous pests by spicing up the plant's defensive response with tolerance mechanism.
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Affiliation(s)
- Archana Singh
- Department of Botany, Hansraj College, University of Delhi, Delhi-110007, India.
| | - Sujata Singh
- Molecular Biology Research Lab, Department of Zoology, Deshbandhu College, University of Delhi, Kalkaji, Delhi-110019, India
| | - Ragini Singh
- Department of Botany, Hansraj College, University of Delhi, Delhi-110007, India
| | - Sumit Kumar
- Molecular Biology Research Lab, Department of Zoology, Deshbandhu College, University of Delhi, Kalkaji, Delhi-110019, India
| | - Sanjay Kumar Singh
- Kentucky Tobacco Research and Development Center, University of Kentucky, Lexington, KY, 40546, USA
| | - Indrakant Kumar Singh
- Molecular Biology Research Lab, Department of Zoology, Deshbandhu College, University of Delhi, Kalkaji, Delhi-110019, India. .,DBC i4 Centre, Deshbandhu College, University of Delhi, Kalkaji, Delhi-110019, India.
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Santos-Silva CAD, Vilela LMB, Oliveira-Silva RLD, Silva JBD, Machado AR, Bezerra-Neto JP, Crovella S, Benko-Iseppon AM. Cassava (Manihot esculenta) defensins: Prospection, structural analysis and tissue-specific expression under biotic/abiotic stresses. Biochimie 2021; 186:1-12. [PMID: 33789147 DOI: 10.1016/j.biochi.2021.03.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 03/10/2021] [Accepted: 03/18/2021] [Indexed: 11/26/2022]
Abstract
Defensins are a prominent family of antimicrobial peptides. They play sophisticated roles in the defense against pathogens in all living organisms, but few works address their expression under different conditions and plant tissues. The present work prospected defensins of Manihot esculenta Crantz, popularly known as cassava. Five defensin candidates (MeDefs) were retrieved from the genome sequences and characterized. Considering chromosome distribution, only MeDef1 and 2 occupy adjacent positions in the same chromosome arm. All 3D structures had antiparallel ß-sheets, an α-helix, and amphipathic residues distributed throughout the peptides with a predominance of cationic surface charge. MeDefs expression was validated by RT-qPCR, including two stress types (biotic: fungus Macrophomina pseudophaseolina, and abiotic: mechanical injury) and a combination of both stresses (fungus+injury) in three different tissues (root, stem, and leaf). For this purpose, ten reference genes (RGs) were tested, and three were chosen to characterize MeDef expression. MeDef3 was up-regulated at roots in all stress situations tested. MeDef1 and MeDef5 were induced in leaves under biotic and abiotic stresses, but not in both stress types simultaneously. Only MeDef2 was down-regulated in the stem tissue also with biotic/abiotic combined stresses. These results indicate that although defensins are known to be responsive to pathogen infection, they may act as preformed defense or, still, have tissue or stress specificities. Aspects of their structure, stability and evolution are also discussed.
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Affiliation(s)
- Carlos André Dos Santos-Silva
- Departamento de Genética, Centro de Biociências, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235, CEP 50.670-423, Recife, PE, Brazil
| | - Lívia Maria Batista Vilela
- Departamento de Genética, Centro de Biociências, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235, CEP 50.670-423, Recife, PE, Brazil
| | - Roberta Lane de Oliveira-Silva
- Departamento de Genética, Centro de Biociências, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235, CEP 50.670-423, Recife, PE, Brazil
| | - Jéssica Barboza da Silva
- Departamento de Genética, Centro de Biociências, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235, CEP 50.670-423, Recife, PE, Brazil
| | - Alexandre Reis Machado
- Departamento de Micologia, Centro de Biociências, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235, CEP 50.670-423, Recife, PE, Brazil
| | - João Pacífico Bezerra-Neto
- Departamento de Genética, Centro de Biociências, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235, CEP 50.670-423, Recife, PE, Brazil
| | - Sergio Crovella
- Departamento de Genética, Centro de Biociências, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235, CEP 50.670-423, Recife, PE, Brazil
| | - Ana Maria Benko-Iseppon
- Departamento de Genética, Centro de Biociências, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235, CEP 50.670-423, Recife, PE, Brazil.
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