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Kasar SS, Marathe KR, Bhide AJ, Herwade AP, Giri AP, Maheshwari VL, Pawar PK. A glycoprotein α-amylase inhibitor from Withania somnifera differentially inhibits various α-amylases and affects the growth and development of Tribolium castaneum. PEST MANAGEMENT SCIENCE 2017; 73:1382-1390. [PMID: 27770482 DOI: 10.1002/ps.4467] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 10/07/2016] [Accepted: 10/18/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Identification and characterisation of plant defensive molecules enrich our resources to design crop protection strategies. In particular, plant-derived proteinaceous inhibitor(s) of insect digestive enzymes appear to be a safe, sustainable and attractive option. RESULTS A glycoprotein having non-competitive α-amylase inhibitory activity with a molecular weight of 8.3 kDa was isolated and purified from seeds of Withania somnifera α-amylase inhibitor (WSAI). Its mass spectrometry analysis revealed 59% sequence coverage with Wrightide II-type α-amylase inhibitor from Wrightia religiosa. A dose-dependent inhibition of α-amylases from Aspergillus oryzae, Bacillus subtilis, Helicoverpa armigera and Tribolium castaneum was recorded. Interestingly, WSAI did not inhibit human salivary α-amylase significantly. When adults of T. castaneum were fed with WSAI (1.6 mg g-1 ), decrease in consumption, growth and efficiency of conversion of ingested food was evident, along with over fourfold increases in feeding deterrence index. A decline in larval residual α-amylase activity after feeding of WSAI resulted in a reduction in longevity of T. castaneum. CONCLUSION The study reflects the significance of WSAI in affecting the overall growth and development of T. castaneum. Pre- and post-harvest pest resistive capability makes WSAI a potential candidate for insect pest management. Further, the effectiveness of this inhibitor could be explored either in formulations or through a transgenic approach. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Sainath S Kasar
- Department of Biochemistry, Shivaji University, Kolhapur, Maharashtra, India
- Department of Biochemistry, School of Life Sciences, North Maharashtra University, Jalgaon, Maharashtra, India
| | - Kiran R Marathe
- Department of Biochemistry, School of Life Sciences, North Maharashtra University, Jalgaon, Maharashtra, India
| | - Amey J Bhide
- Plant Molecular Biology Unit, Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Pune, Maharashtra, India
| | - Abhijeet P Herwade
- Department of Biotechnology, Shivaji University, Kolhapur, Maharashtra, India
| | - Ashok P Giri
- Plant Molecular Biology Unit, Division of Biochemical Sciences, CSIR-National Chemical Laboratory, Pune, Maharashtra, India
| | - Vijay L Maheshwari
- Department of Biochemistry, School of Life Sciences, North Maharashtra University, Jalgaon, Maharashtra, India
| | - Pankaj K Pawar
- Department of Biochemistry, Shivaji University, Kolhapur, Maharashtra, India
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de Oliveira RS, Oliveira-Neto OB, Moura HFN, de Macedo LLP, Arraes FBM, Lucena WA, Lourenço-Tessutti IT, de Deus Barbosa AA, da Silva MCM, Grossi-de-Sa MF. Transgenic Cotton Plants Expressing Cry1Ia12 Toxin Confer Resistance to Fall Armyworm (Spodoptera frugiperda) and Cotton Boll Weevil (Anthonomus grandis). FRONTIERS IN PLANT SCIENCE 2016; 7:165. [PMID: 26925081 PMCID: PMC4759279 DOI: 10.3389/fpls.2016.00165] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 01/31/2016] [Indexed: 05/21/2023]
Abstract
Gossypium hirsutum (commercial cooton) is one of the most economically important fibers sources and a commodity crop highly affected by insect pests and pathogens. Several transgenic approaches have been developed to improve cotton resistance to insect pests, through the transgenic expression of different factors, including Cry toxins, proteinase inhibitors, and toxic peptides, among others. In the present study, we developed transgenic cotton plants by fertilized floral buds injection (through the pollen-tube pathway technique) using an DNA expression cassette harboring the cry1Ia12 gene, driven by CaMV35S promoter. The T0 transgenic cotton plants were initially selected with kanamycin and posteriorly characterized by PCR and Southern blot experiments to confirm the genetic transformation. Western blot and ELISA assays indicated the transgenic cotton plants with higher Cry1Ia12 protein expression levels to be further tested in the control of two major G. hirsutum insect pests. Bioassays with T1 plants revealed the Cry1Ia12 protein toxicity on Spodoptera frugiperda larvae, as evidenced by mortality up to 40% and a significant delay in the development of the target insects compared to untransformed controls (up to 30-fold). Also, an important reduction of Anthonomus grandis emerging adults (up to 60%) was observed when the insect larvae were fed on T1 floral buds. All the larvae and adult insect survivors on the transgenic lines were weaker and significantly smaller compared to the non-transformed plants. Therefore, this study provides GM cotton plant with simultaneous resistance against the Lepidopteran (S. frugiperda), and the Coleopteran (A. grandis) insect orders, and all data suggested that the Cry1Ia12 toxin could effectively enhance the cotton transgenic plants resistance to both insect pests.
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Affiliation(s)
- Raquel S. de Oliveira
- Catholic University of BrasiliaBrasilia, Brazil
- Pest-Plant Molecular Interaction Laboratory, Embrapa Genetic Resources and Biotechnology, Brazilian Research Agricultural CorporationBrasilia, Brazil
| | - Osmundo B. Oliveira-Neto
- Pest-Plant Molecular Interaction Laboratory, Embrapa Genetic Resources and Biotechnology, Brazilian Research Agricultural CorporationBrasilia, Brazil
- UNIEURO – University CenterBrasília, Brazil
| | - Hudson F. N. Moura
- Pest-Plant Molecular Interaction Laboratory, Embrapa Genetic Resources and Biotechnology, Brazilian Research Agricultural CorporationBrasilia, Brazil
- Biology Institute, Brasilia UniversityBrasilia, Brazil
| | - Leonardo L. P. de Macedo
- Pest-Plant Molecular Interaction Laboratory, Embrapa Genetic Resources and Biotechnology, Brazilian Research Agricultural CorporationBrasilia, Brazil
| | - Fabrício B. M. Arraes
- Pest-Plant Molecular Interaction Laboratory, Embrapa Genetic Resources and Biotechnology, Brazilian Research Agricultural CorporationBrasilia, Brazil
- Federal University of Rio Grande do SulPorto Alegre, Brazil
| | - Wagner A. Lucena
- Pest-Plant Molecular Interaction Laboratory, Embrapa Genetic Resources and Biotechnology, Brazilian Research Agricultural CorporationBrasilia, Brazil
- Embrapa CottonCampina Grande, Brazil
| | - Isabela T. Lourenço-Tessutti
- Pest-Plant Molecular Interaction Laboratory, Embrapa Genetic Resources and Biotechnology, Brazilian Research Agricultural CorporationBrasilia, Brazil
| | - Aulus A. de Deus Barbosa
- Pest-Plant Molecular Interaction Laboratory, Embrapa Genetic Resources and Biotechnology, Brazilian Research Agricultural CorporationBrasilia, Brazil
| | - Maria C. M. da Silva
- Pest-Plant Molecular Interaction Laboratory, Embrapa Genetic Resources and Biotechnology, Brazilian Research Agricultural CorporationBrasilia, Brazil
| | - Maria F. Grossi-de-Sa
- Catholic University of BrasiliaBrasilia, Brazil
- Pest-Plant Molecular Interaction Laboratory, Embrapa Genetic Resources and Biotechnology, Brazilian Research Agricultural CorporationBrasilia, Brazil
- *Correspondence: Maria F. Grossi-de-Sa,
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Gadge PP, Wagh SK, Shaikh FK, Tak RD, Padul MV, Kachole MS. A bifunctional α-amylase/trypsin inhibitor from pigeonpea seeds: Purification, biochemical characterization and its bio-efficacy against Helicoverpa armigera. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2015; 125:17-25. [PMID: 26615146 DOI: 10.1016/j.pestbp.2015.06.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 05/26/2015] [Accepted: 06/15/2015] [Indexed: 06/05/2023]
Abstract
This paper evaluates α-amylase inhibitor (α-AI) mediated defense of pigeonpea against Helicoverpa armigera. A bifunctional α-amylase/trypsin inhibitor was purified from the seeds of pigeonpea by native liquid phase isoelectric focusing (N-LP-IEF), affinity chromatography and preparative electrophoresis. Its in-vivo and in-vitro interaction with midgut amylases of H. armigera was studied along with growth inhibitory activity. One and two dimensional (2D) zymographic analyses revealed that the purified inhibitor is dimeric glycoprotein (60.2kDa and 56kDa) exist in a multi-isomeric form with five pI variants (pI 5.5 to 6.3). It was found to be heat labile with complete inactivation up to 80°C and stable over a wide range of pH (4-11). The slow binding and competitive type of α-amylase inhibition was observed with 0.08μM of dissociation constant (Ki) for the enzyme-inhibitor complex (EI). The internal protein sequence of two subunits obtained by mass spectrometry matched with cereal-type α-AI, a conserved domain from AAI_LTSS superfamily and sialyltransferase-like protein respectively. In-vivo studies indicated up-regulation of total midgut α-amylase activity with negative effect on growth rate of H. armigera suggesting its suitability for pest control.
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Affiliation(s)
- Prafull P Gadge
- Department of Biochemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, Maharashtra 431004, India
| | - Sandip K Wagh
- Department of Biochemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, Maharashtra 431004, India
| | - Faiyaz K Shaikh
- Department of Biochemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, Maharashtra 431004, India
| | - Rajesh D Tak
- Dr. John Barnabas Post Graduate School for Biological Studies, B. P. H Education Society's Ahmednagar College, Station Road, Ahmednagar, Maharashtra 414001, India
| | - Manohar V Padul
- Department of Biochemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, Maharashtra 431004, India.
| | - Manvendra S Kachole
- Department of Biochemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, Maharashtra 431004, India
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Gupta M, Sharma P, Nath AK. Purification of a novel α-amylase inhibitor from local Himalayan bean (Phaseolus vulgaris) seeds with activity towards bruchid pests and human salivary amylase. Journal of Food Science and Technology 2012; 51:1286-93. [PMID: 24966421 DOI: 10.1007/s13197-012-0631-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 10/23/2011] [Accepted: 01/24/2012] [Indexed: 11/26/2022]
Abstract
Six bean (Phaseolus vulgaris L.) cultivars of Himalayan region were analysed for α- amylase inhibitor activity. The α-amylase inhibitor from seeds of screened bean cultivar KR-9, showing maximum inhibitory activity was purified using ammonium sulfate precipitation, gel filtration chromatography (Sephadex G-100) and ion exchange chromatography (DEAE-Sephadex). The inhibitor was purified to homogeneity as judged by native-PAGE with 14.22 fold purification and 71.66% recovery. Purified inhibitor consisted of three subunits of molecular weight 15,488, 18,620 and 26,302 daltons, respectively as determined by SDS-PAGE. It was found to be heat stable up to 30 °C-40 °C and had two pH optima of 5.0 and 6.9. Nature of inhibition was found to be of non-competitive type. The purified inhibitor was found to be effective against α-amylases extracted from larvae of Callosobruchus chinensis, Tribolium castaneum and gut enzyme of Spodoptera littoralis. Larvae of Tribolium castaneum fed on flour mixed with purified inhibitor for 5 days showed 100% larval mortality. Purified α-amylase inhibitor was also found to inhibit human salivary α-amylase, suggesting its potential in prevention and therapy of obesity and use as drug design targets for treatment of diabetes. The gene encoding the inhibitor may be used to develop transgenic plants resistant against insect pests.
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Affiliation(s)
- Mridu Gupta
- Department of Biotechnology, University of Horticulture and Forestry, Nauni-173 230, Solan, Himachal Pradesh India
| | - Pratima Sharma
- Department of Biotechnology, University of Horticulture and Forestry, Nauni-173 230, Solan, Himachal Pradesh India
| | - Amarjit K Nath
- Department of Biotechnology, University of Horticulture and Forestry, Nauni-173 230, Solan, Himachal Pradesh India
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A Trypsin Inhibitor from Sapindus saponaria L. Seeds: Purification, Characterization, and Activity Towards Pest Insect Digestive Enzyme. Protein J 2010; 30:9-19. [DOI: 10.1007/s10930-010-9296-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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