Comparative analysis delineates the transcriptional resistance mechanisms for pod borer resistance in the pigeonpea wild relative cajanus scarabaeoides (L.) thouars
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Description
Insect pests pose a serious threat to global food production. Pod borer (Helicoverpa armigera (Hübner)) is one of the most destructive pests of leguminous crops. The use of host resistance has been an effective, environmentally friendly and sustainable approach for controlling several
agricultural pests. The exploitation of natural variations in crop wild relatives could yield pestresistant crop varieties. In this study, we used a high-throughput transcriptome profiling approach to investigate the defense mechanisms of susceptible cultivated and tolerant wild pigeonpea genotypes against H. armigera infestation. The wild genotype displayed elevated pest-induced gene expression, including the enhanced induction of phytohormone and calcium/calmodulin signaling, transcription factors, plant volatiles and secondary metabolite genes compared to the cultivated control. The biosynthetic and regulatory processes associated with flavonoids, terpenes and glucosinolate
secondary metabolites showed higher accumulations in the wild genotype, suggesting the existence of distinct tolerance mechanisms. This study provides insights into the molecular mechanisms underlying insect resistance in the wild pigeonpea genotype. This information highlights the indispensable role of crop wild relatives as a source of crucial genetic resources that could be important in devising strategies for crop improvement with enhanced pest resistance.
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| ID Code: | 207203 | ||||||
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| Item Type: | Contribution to Journal (Journal Article) | ||||||
| Refereed: | Yes | ||||||
| ORCID iD: |
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| Additional Information: | Funding Information: Funding: This work was supported by the Africa Biosciences Challenge Fund (ABCF) program through the BecA-ILRI Hub. The ABCF Program was funded by the Australian Department for Foreign Affairs and Trade (DFAT) through the BecA-CSIRO partnership; the Syngenta Foundation for Sustainable Agriculture (SFSA); the Bill & Melinda Gates Foundation (BMGF); the UK Department for International Development (DFID); the Swedish International Development Cooperation Agency (SIDA) and the Advance Queensland Research Fellowship package grant numbers AQRF14816-17RD2, AQRF04016-17RD2 and AQRF14716-17RD2. I.N. was an ABCF Fellowship recipient and A.N.-D. was a QUT-HDR Sponsorship and Associated Grain scholarship recipient. Funding Information: This work was supported by the Africa Biosciences Challenge Fund (ABCF) program through the BecA-ILRI Hub. The ABCF Program was funded by the Australian Department for Foreign Affairs and Trade (DFAT) through the BecA-CSIRO partnership; the Syngenta Foundation for Sustainable Agriculture (SFSA); the Bill & Melinda Gates Foundation (BMGF); the UK Department for International Development (DFID); the Swedish International Development Cooperation Agency (SIDA) and the Advance Queensland Research Fellowship package grant numbers AQRF14816-17RD2, AQRF04016-17RD2 and AQRF14716-17RD2. I.N. was an ABCF Fellowship recipient and A.N.-D. was a QUT-HDR Sponsorship and Associated Grain scholarship recipient. The authors wish to acknowledge ILRI Forage Genebank, the Kenya Agricultural & Livestock Research Organization (KALRO) and the Katumani and Australian Grains Genebank (AGG) for the provision of wild and cultivated pigeonpea seeds. Publisher Copyright: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. | ||||||
| Measurements or Duration: | 16 pages | ||||||
| Keywords: | Cajanus scarabaeoides, Crop wild relatives, Helicoverpa armigera, Insect resistance, Pigeonpea, Pod borer, Tran-scriptomics | ||||||
| DOI: | 10.3390/ijms22010309 | ||||||
| ISSN: | 1422-0067 | ||||||
| Pure ID: | 74290255 | ||||||
| Divisions: | Current > Research Centres > Centre for Agriculture and the Bioeconomy Current > QUT Faculties and Divisions > Faculty of Science Current > Schools > School of Biology & Environmental Science |
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| Funding Information: | Funding: This work was supported by the Africa Biosciences Challenge Fund (ABCF) program through the BecA-ILRI Hub. The ABCF Program was funded by the Australian Department for Foreign Affairs and Trade (DFAT) through the BecA-CSIRO partnership; the Syngenta Foundation for Sustainable Agriculture (SFSA); the Bill & Melinda Gates Foundation (BMGF); the UK Department for International Development (DFID); the Swedish International Development Cooperation Agency (SIDA) and the Advance Queensland Research Fellowship package grant numbers AQRF14816-17RD2, AQRF04016-17RD2 and AQRF14716-17RD2. I.N. was an ABCF Fellowship recipient and A.N.-D. was a QUT-HDR Sponsorship and Associated Grain scholarship recipient. This work was supported by the Africa Biosciences Challenge Fund (ABCF) program through the BecA-ILRI Hub. The ABCF Program was funded by the Australian Department for Foreign Affairs and Trade (DFAT) through the BecA-CSIRO partnership; the Syngenta Foundation for Sustainable Agriculture (SFSA); the Bill & Melinda Gates Foundation (BMGF); the UK Department for International Development (DFID); the Swedish International Development Cooperation Agency (SIDA) and the Advance Queensland Research Fellowship package grant numbers AQRF14816-17RD2, AQRF04016-17RD2 and AQRF14716-17RD2. I.N. was an ABCF Fellowship recipient and A.N.-D. was a QUT-HDR Sponsorship and Associated Grain scholarship recipient. The authors wish to acknowledge ILRI Forage Genebank, the Kenya Agricultural & Livestock Research Organization (KALRO) and the Katumani and Australian Grains Genebank (AGG) for the provision of wild and cultivated pigeonpea seeds. | ||||||
| Copyright Owner: | 2020 The Author(s) | ||||||
| Copyright Statement: | This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au | ||||||
| Deposited On: | 06 Jan 2021 01:20 | ||||||
| Last Modified: | 08 Mar 2024 07:26 |
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