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Barbole RS, Sharma S, Patil Y, Giri AP, Joshi RS. Chitinase inhibition induces transcriptional dysregulation altering ecdysteroid-mediated control of Spodoptera frugiperda development. iScience 2024; 27:109280. [PMID: 38444606 PMCID: PMC10914475 DOI: 10.1016/j.isci.2024.109280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 01/30/2024] [Accepted: 02/16/2024] [Indexed: 03/07/2024] Open
Abstract
Chitinases and ecdysteroid hormones are vital for insect development. Crosstalk between chitin and ecdysteroid metabolism regulation is enigmatic. Here, we examined chitinase inhibition effect on Spodoptera frugiperda ecdysteroid metabolism. In vitro studies suggested that berberine inhibits S. frugiperda chitinase 5 (SfCht5). The Berberine feeding resulted in defective S. frugiperda development. Berberine-fed insects showed higher SfCht5 and Chitinase 7 expression and cumulative chitinase activity. Chitinase inhibition led to overexpression of chitinases, ecdysteroid biosynthesis, and responsive genes. SfCht5 silencing and overexpression resulted in ecdysone receptor deregulation. Transcription factors, like Broad Complex Z4, regulate the ecdysteroid metabolism and showed high expression upon berberine ingestion. Broad Complex Z4 binding in 5' UTR of Ecdysone receptor, SfCht5, Chitinase 7, Phantom, Neverland, and other ecdysteroid biosynthesis genes might lead to their upregulation in berberine-fed insects. As a result, berberine-fed insects showed ecdysone overaccumulation. These findings underscore chitinase activity's impact on ecdysone biosynthesis and its transcriptional crosstalk.
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Affiliation(s)
- Ranjit S. Barbole
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Shivani Sharma
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India
| | - Yogita Patil
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Ashok P. Giri
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Rakesh S. Joshi
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
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de Almeida Barros R, Meriño-Cabrera Y, Castro JS, da Silva Junior NR, de Oliveira JVA, Schultz H, de Andrade RJ, de Oliveira Ramos HJ, de Almeida Oliveira MG. Bovine pancreatic trypsin inhibitor and soybean Kunitz trypsin inhibitor: Differential effects on proteases and larval development of the soybean pest Anticarsia gemmatalis (Lepidoptera: Noctuidae). PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 187:105188. [PMID: 36127063 DOI: 10.1016/j.pestbp.2022.105188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/26/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
Pest management is challenged with resistant herbivores and problems regarding human health and environmental issues. Indeed, the greatest challenge to modern agriculture is to protect crops from pests and still maintain environmental quality. This study aimed to analyze by in silico, in vitro, and in vivo approaches to the feasibility of using the inhibitory protein extracted from mammals - Bovine Pancreatic Trypsin Inhibitor (BPTI) as a potential inhibitor of digestive trypsins from the pest Anticarsia gemmatalis and comparing the results with the host-plant inhibitor - Soybean Kunitz Trypsin Inhibitor (SKTI). BPTI and SKTI interacts with A. gemmatalis trypsin-like enzyme competitively, through hydrogen and hydrophobic bonds. A. gemmatalis larvae exposed to BPTI did not show two common adaptative mechanisms i.e., proteolytic degradation and overproduction of proteases, presenting highly reduced trypsin-like activity. On the other hand, SKTI-fed larvae did not show reduced trypsin-like activity, presenting overproduction of proteases and SKTI digestion. In addition, the larval survival was reduced by BPTI similarly to SKTI, and additionally caused a decrease in pupal weight. The non-plant protease inhibitor BPTI presents intriguing element to compose biopesticide formulations to help decrease the use of conventional refractory pesticides into integrated pest management programs.
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Affiliation(s)
- Rafael de Almeida Barros
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Minas Gerais, Brazil; Instituto de Biotecnologia aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
| | - Yaremis Meriño-Cabrera
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Minas Gerais, Brazil; Instituto de Biotecnologia aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
| | - José Severiche Castro
- Departamento de Física, Universidad de Sucre, Sincelejo, Colombia; Instituto de Biotecnologia aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
| | - Neilier Rodrigues da Silva Junior
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Minas Gerais, Brazil; Instituto de Biotecnologia aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
| | - João Vitor Aguilar de Oliveira
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Minas Gerais, Brazil; Instituto de Biotecnologia aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
| | - Halina Schultz
- Departamento de Entomologia, Universidade Federal de Viçosa, Minas Gerais, Brazil; Instituto de Biotecnologia aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
| | - Rafael Júnior de Andrade
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Minas Gerais, Brazil; Instituto de Biotecnologia aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
| | - Humberto Josué de Oliveira Ramos
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Minas Gerais, Brazil; Instituto de Biotecnologia aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
| | - Maria Goreti de Almeida Oliveira
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Minas Gerais, Brazil; Instituto de Biotecnologia aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil.
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3
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de Almeida Barros R, Meriño-Cabrera Y, Severiche Castro JG, Rodrigues da Silva Júnior N, Schultz H, de Andrade RJ, Aguilar de Oliveira JV, de Oliveira Ramos HJ, de Almeida Oliveira MG. Inhibition constant and stability of tripeptide inhibitors of gut trypsin-like enzyme of the soybean pest Anticarsia gemmatalis. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2022; 110:e21887. [PMID: 35315942 DOI: 10.1002/arch.21887] [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: 01/06/2022] [Revised: 02/08/2022] [Accepted: 03/08/2022] [Indexed: 06/14/2023]
Abstract
Insects overcome the action of natural protease inhibitors (PIs) due to evolutionary adaptations through endogenous proteolysis and reprogramming proteases. Insect adaptations complicate the formulation of IP-based crop protection products. However, small peptides designed based on the active site of enzymes have shown promising results that could change this scenario. GORE1 and GORE2 are designed tripeptides that reduce the survival of Anticarsia gemmatalis when ingested orally. In this article, the stability and ability of the peptides to bind trypsin-like enzymes of A. gemmatalis were evaluated by molecular dynamics (MD) simulations. The ability of the peptides to inhibit trypsin-like enzymes in vivo was compared with the SKTI protein by feeding A. gemmatalis larvae at different concentrations, followed by an inhibition persistence assay. During the MD simulation of enzyme-ligand complexes, both peptides showed a small variation of root-mean-square deviation and root-mean-square fluctuation, suggesting that these molecules reach equilibrium when forming a complex with the trypsin-like enzyme. Furthermore, both peptides form hydrogen bonds with substrate recognition sites of A. gemmatalis trypsin-like enzyme, with GORE2 having more interactions than GORE1. Larvae of A. gemmatalis exposed to the peptides and SKTI showed a similar reduction in proteolytic activity, but the persistence of inhibition of trypsin-like enzyme was longer in peptide-fed insects. Despite their size, the peptides exhibit important active and substrate binding site interactions, stability during complex formation, and steadiness effects in vivo. The results provide fundamental information for the development of mimetic molecules and help in decision-making for the selection of delivery methods for larger-scale experiments regarding similar molecules.
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Affiliation(s)
- Rafael de Almeida Barros
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
- Laboratory of Enzymology and Biochemistry of Proteins and Peptides, Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
| | - Yaremis Meriño-Cabrera
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
- Laboratory of Enzymology and Biochemistry of Proteins and Peptides, Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
| | - José G Severiche Castro
- Laboratory of Enzymology and Biochemistry of Proteins and Peptides, Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
- Departamento de Física, Universidad de Sucre, Sincelejo, Sucre, Colombia
| | - Neilier Rodrigues da Silva Júnior
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
- Laboratory of Enzymology and Biochemistry of Proteins and Peptides, Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
| | - Halina Schultz
- Laboratory of Enzymology and Biochemistry of Proteins and Peptides, Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Rafael J de Andrade
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
- Laboratory of Enzymology and Biochemistry of Proteins and Peptides, Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
| | - João V Aguilar de Oliveira
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
- Laboratory of Enzymology and Biochemistry of Proteins and Peptides, Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
| | - Humberto J de Oliveira Ramos
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
- Laboratory of Enzymology and Biochemistry of Proteins and Peptides, Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
| | - Maria G de Almeida Oliveira
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
- Laboratory of Enzymology and Biochemistry of Proteins and Peptides, Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
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Yadav NK, Saikhedkar NS, Giri AP. PINIR: a comprehensive information resource for Pin-II type protease inhibitors. BMC PLANT BIOLOGY 2021; 21:267. [PMID: 34107869 PMCID: PMC8188708 DOI: 10.1186/s12870-021-03027-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 05/10/2021] [Indexed: 05/22/2023]
Abstract
BACKGROUND Serine protease inhibitors belonging to the Potato type-II Inhibitor family Protease Inhibitors (Pin-II type PIs) are essential plant defense molecules. They are characterized by multiple inhibitory repeat domains, conserved disulfide bond pattern, and a tripeptide reactive center loop. These features of Pin-II type PIs make them potential molecules for protein engineering and designing inhibitors for agricultural and therapeutic applications. However, the diversity in these PIs remains unexplored due to the lack of annotated protein sequences and their functional attributes in the available databases. RESULTS We have developed a database, PINIR (Pin-II type PIs Information Resource), by systematic collection and manual annotation of 415 Pin-II type PI protein sequences. For each PI, the number and position for signature sequences are specified: 695 domains, 75 linkers, 63 reactive center loops, and 10 disulfide bond patterns are identified and mapped. Database analysis revealed novel subcategories of PIs, species-correlated occurrence of inhibitory domains, reactive center loops, and disulfide bond patterns. By analyzing linker regions, we predict that alternative processing at linker regions could generate PI variants in the Solanaceae family. CONCLUSION PINIR ( https://pinir.ncl.res.in ) provides a web interface for browsing and analyzing the protein sequences of Pin-II type PIs. Information about signature sequences, spatio-temporal expression, biochemical properties, gene sequences, and literature references are provided. Analysis of PINIR depicts conserved species-specific features of Pin-II type PI protein sequences. Diversity in the sequence of inhibitory domains and reactive loops directs potential applications to engineer Pin-II type PIs. The PINIR database will serve as a comprehensive information resource for further research into Pin-II type PIs.
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Affiliation(s)
- Nikhilesh K Yadav
- Publication and Science Communication Unit, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
- Information Systems Area, Indian Institute of Management Indore, Indore, 453556, India
| | - Nidhi S Saikhedkar
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ashok P Giri
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, 411008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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de Almeida Barros R, Meriño-Cabrera Y, Vital CE, da Silva Júnior NR, de Oliveira CN, Lessa Barbosa S, Marques Gonçalves Assis JV, Ramos HJ, de Almeida Oliveira MG. Small peptides inhibit gut trypsin-like proteases and impair Anticarsia gemmatalis (Lepidoptera: Noctuidae) survival and development. PEST MANAGEMENT SCIENCE 2021; 77:1714-1723. [PMID: 33200876 DOI: 10.1002/ps.6191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 09/02/2020] [Accepted: 11/17/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Anticarsia gemmatalis larvae are key defoliating pests of soybean plants. Inorganic insecticides, harmful to the environment and human health, are the main molecules used in the control of this pest. To apply more sustainable management methods, organic molecules with high specificities, such as proteinaceous protease inhibitors, have been sought. Thus, molecular docking studies, kinetics assays, and biological tests were performed to evaluate the inhibitory activity of two peptides (GORE1 and GORE2) rationally designed to inhibit trypsin-like enzymes, which are the main proteases of A. gemmatalis midgut. RESULTS The molecular docking simulations revealed critical hydrogen bonding patterns of the peptides with key active site residues of trypsin-like proteases of A. gemmatalis and other Lepidopteran insects. The negative values of binding energy indicate that hydrogen bonds potentiate the tight binding of the peptides with trypsin-like proteases, predicting an effective inhibition. The inhibition's rate constants (Ki) were 0.49 and 0.10 mM for GORE1 and GORE2, resulting in effective inhibition of the activity trypsin on the L-BApNA substrate in the in vitro tests, indicating that the peptide GORE2 has higher inhibitory capacity on the A. gemmatalis trypsins. In addition, the two peptides were determined to be reversible competitive inhibitors. The in vivo test demonstrated that the peptides harm the survival and development of A. gemmatalis larvae. CONCLUSION These results suggest that these peptides are potential candidates in the management of A. gemmatalis larvae and provide baseline information for the design of new trypsin-like inhibitors based on peptidomimetic tools. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Rafael de Almeida Barros
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Brazil
- Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Brazil
| | - Yaremis Meriño-Cabrera
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Brazil
- Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Brazil
| | - Camilo E Vital
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Brazil
- Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Brazil
- Center of Analysis of Biomolecules, NuBioMol, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Neilier R da Silva Júnior
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Brazil
- Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Brazil
| | - Cauê N de Oliveira
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Brazil
- Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Brazil
| | - Samuel Lessa Barbosa
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Brazil
- Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Brazil
| | - João V Marques Gonçalves Assis
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Brazil
- Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Brazil
| | - Humberto Jo Ramos
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Brazil
- Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Brazil
- Center of Analysis of Biomolecules, NuBioMol, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Maria G de Almeida Oliveira
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Brazil
- Instituto de Biotecnologia Aplicada à Agropecuária, BIOAGRO-UFV, Viçosa, Brazil
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Meriño-Cabrera Y, Severiche Castro JG, Rios Diez JD, Rodrigues Macedo ML, de Oliveira Mendes TA, Goreti de Almeida Oliveira M. Rational design of mimetic peptides based on the interaction between Inga laurina inhibitor and trypsins for Spodoptera cosmioides pest control. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2020; 122:103390. [PMID: 32360954 DOI: 10.1016/j.ibmb.2020.103390] [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: 12/17/2019] [Revised: 03/23/2020] [Accepted: 04/13/2020] [Indexed: 06/11/2023]
Abstract
The interaction of Inga laurina Kunitz inhibitor with insect trypsins is an example of protein-protein interaction with potential application for the pest control. However, the crop field application of proteins as inhibitors is limited due to high production cost, the large molecular size and low environmental stability. The use of mimetic peptides that have molecular features associated with the protein inhibitor can result in a product with lower cost and higher efficiency for the agricultural application. Here, we designed mimetic peptides deriving from globular domains of ILTI that are predicted to interact with trypsin enzymes of Lepidoptera pest. Two linear peptides were identified and synthetized from the interface of interaction between trypsin-ILTI complexes. These peptides were derived due to its high-energy contribution for the biding affinity between the enzyme-protein inhibitor. The peptides showed structural stability, propensity to adopt the bound conformation also without the context of the protein, inhibitory activity of digestive trypsins and toxic effects on the S. cosmioides, indicating that they can be used as potential inhibitor for pest control.
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Affiliation(s)
- Yaremis Meriño-Cabrera
- Departamento de Bioquímica e Biologia molecular, Universidade Federal de Viçosa, Minas Gerais, Brazil; Instituto de Biotecnologia aplicada à Agropecuaria, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
| | | | - Juan Diego Rios Diez
- Instituto de Biotecnologia aplicada à Agropecuaria, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
| | - Maria Ligia Rodrigues Macedo
- Laboratório de Purificação de Proteínas e suas Funções Biológicas, Unidade de Tecnologia de Alimentos e da Saúde Pública, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil
| | - Tiago Antônio de Oliveira Mendes
- Departamento de Bioquímica e Biologia molecular, Universidade Federal de Viçosa, Minas Gerais, Brazil; Instituto de Biotecnologia aplicada à Agropecuaria, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil.
| | - Maria Goreti de Almeida Oliveira
- Departamento de Bioquímica e Biologia molecular, Universidade Federal de Viçosa, Minas Gerais, Brazil; Instituto de Biotecnologia aplicada à Agropecuaria, BIOAGRO-UFV, Viçosa, Minas Gerais, Brazil
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Saikhedkar NS, Joshi RS, Yadav AK, Seal S, Fernandes M, Giri AP. Phyto-inspired cyclic peptides derived from plant Pin-II type protease inhibitor reactive center loops for crop protection from insect pests. Biochim Biophys Acta Gen Subj 2019; 1863:1254-1262. [DOI: 10.1016/j.bbagen.2019.05.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 04/25/2019] [Accepted: 05/06/2019] [Indexed: 01/10/2023]
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Schoenherr AP, Rizzo E, Jackson N, Manosalva P, Gomez SK. Mycorrhiza-Induced Resistance in Potato Involves Priming of Defense Responses Against Cabbage Looper (Noctuidae: Lepidoptera). ENVIRONMENTAL ENTOMOLOGY 2019; 48:370-381. [PMID: 30715218 DOI: 10.1093/ee/nvy195] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Indexed: 05/27/2023]
Abstract
Most plants form mutualistic associations with arbuscular mycorrhizal (AM) fungi that are ubiquitous in soils. Through this symbiosis, plants can withstand abiotic and biotic stresses. The underlying molecular mechanisms involved in mediating mycorrhiza-induced resistance against insects needs further research, and this is particularly true for potato (Solanum tuberosum L. (Solanales: Solanaceae)), which is the fourth most important crop worldwide. In this study, the tripartite interaction between potato, the AM fungus Rhizophagus irregularis (Glomerales: Glomeraceae), and cabbage looper (Trichoplusia ni Hübner) (Lepidoptera: Noctuidae) was examined to determine whether potato exhibits mycorrhiza-induced resistance against this insect. Plant growth, insect fitness, AM fungal colonization of roots, and transcript levels of defense-related genes were measured in shoots and roots after 5 and 8 d of herbivory on mycorrhizal and nonmycorrhizal plants. AM fungal colonization of roots did not have an effect on potato growth, but root colonization levels increased by herbivory. Larval weight gain was reduced after 8 d of feeding on mycorrhizal plants compared with nonmycorrhizal plants. Systemic upregulation of Allene Oxide Synthase 1 (AOS1), 12-Oxo-Phytodienoate Reductase 3 (OPR3) (jasmonic acid pathway), Protease Inhibitor Type I (PI-I) (anti-herbivore defense), and Phenylalanine Ammonia Lyase (PAL) transcripts (phenylpropanoid pathway) was found during the tripartite interaction. Together, these findings suggest that potato may exhibit mycorrhiza-induced resistance to cabbage looper by priming anti-herbivore defenses aboveground. This study illustrates how mycorrhizal potato responds to herbivory by a generalist-chewing insect and serves as the basis for future studies involving tripartite interactions with other pests.
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Affiliation(s)
| | - Eric Rizzo
- School of Biological Sciences, University of Northern Colorado, Greeley, CO
| | - Natasha Jackson
- Microbiology and Plant Pathology Department, University of California, Riverside, University Avenue, Riverside, CA
| | - Patricia Manosalva
- Microbiology and Plant Pathology Department, University of California, Riverside, University Avenue, Riverside, CA
| | - S Karen Gomez
- School of Biological Sciences, University of Northern Colorado, Greeley, CO
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