New genomic regions identified for resistance to spot blotch and terminal heat stress in an interspecific population of triticum aestivum and T. spelta
Wheat is one of the most widely grown and consumed food crops in the world. Spot blotch and terminal heat stress are the two significant constraints mainly in the Indo–Gangetic plains of South Asia. The study was undertaken using 185 recombinant lines (RILs) derived from the interspecific hybridizat...
| Autores principales: | , , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
MDPI
2022
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/127297 |
| _version_ | 1855536255884853248 |
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| author | Sudhir Navathe Pandey, Ajeet Kumar Sandeep Sharma Chand, Ramesh Vinod Kumar Mishra Kumar, Dinesh Jaiswal, Sarika K. Mir Asif Iquebal Velu, Govindan Joshi, Arun Kumar Singh, Pawan K. |
| author_browse | Chand, Ramesh Jaiswal, Sarika K. Joshi, Arun Kumar Kumar, Dinesh Mir Asif Iquebal Pandey, Ajeet Kumar Sandeep Sharma Singh, Pawan K. Sudhir Navathe Velu, Govindan Vinod Kumar Mishra |
| author_facet | Sudhir Navathe Pandey, Ajeet Kumar Sandeep Sharma Chand, Ramesh Vinod Kumar Mishra Kumar, Dinesh Jaiswal, Sarika K. Mir Asif Iquebal Velu, Govindan Joshi, Arun Kumar Singh, Pawan K. |
| author_sort | Sudhir Navathe |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Wheat is one of the most widely grown and consumed food crops in the world. Spot blotch and terminal heat stress are the two significant constraints mainly in the Indo–Gangetic plains of South Asia. The study was undertaken using 185 recombinant lines (RILs) derived from the interspecific hybridization of ‘Triticum aestivum (HUW234) × T. spelta (H+26)’ to reveal genomic regions associated with tolerance to combined stress to spot blotch and terminal heat. Different physiological (NDVI, canopy temperature, leaf chlorophyll) and grain traits (TGW, grain size) were observed under stressed (spot blotch, terminal heat) and non-stressed environments. The mean maturity duration of RILs under combined stress was reduced by 12 days, whereas the normalized difference vegetation index (NDVI) was 46.03%. Similarly, the grain size was depleted under combined stress by 32.23% and thousand kernel weight (TKW) by 27.56% due to spot blotch and terminal heat stress, respectively. The genetic analysis using 6734 SNP markers identified 37 significant loci for the area under the disease progress curve (AUDPC) and NDVI. The genome-wide functional annotation of the SNP markers revealed gene functions such as plant chitinases, NB-ARC and NBS-LRR, and the peroxidase superfamily Cytochrome P450 have a positive role in the resistance through a hypersensitive response. Zinc finger domains, cysteine protease coding gene, F-box protein, ubiquitin, and associated proteins, play a substantial role in the combined stress of spot blotch and terminal heat in bread wheat, according to genomic domains ascribed to them. The study also highlights T. speltoides as a source of resistance to spot blotch and terminal heat tolerance. |
| format | Journal Article |
| id | CGSpace127297 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1272972025-12-08T10:29:22Z New genomic regions identified for resistance to spot blotch and terminal heat stress in an interspecific population of triticum aestivum and T. spelta Sudhir Navathe Pandey, Ajeet Kumar Sandeep Sharma Chand, Ramesh Vinod Kumar Mishra Kumar, Dinesh Jaiswal, Sarika K. Mir Asif Iquebal Velu, Govindan Joshi, Arun Kumar Singh, Pawan K. bipolaris sorokiniana heat stress wheat resistance varieties Wheat is one of the most widely grown and consumed food crops in the world. Spot blotch and terminal heat stress are the two significant constraints mainly in the Indo–Gangetic plains of South Asia. The study was undertaken using 185 recombinant lines (RILs) derived from the interspecific hybridization of ‘Triticum aestivum (HUW234) × T. spelta (H+26)’ to reveal genomic regions associated with tolerance to combined stress to spot blotch and terminal heat. Different physiological (NDVI, canopy temperature, leaf chlorophyll) and grain traits (TGW, grain size) were observed under stressed (spot blotch, terminal heat) and non-stressed environments. The mean maturity duration of RILs under combined stress was reduced by 12 days, whereas the normalized difference vegetation index (NDVI) was 46.03%. Similarly, the grain size was depleted under combined stress by 32.23% and thousand kernel weight (TKW) by 27.56% due to spot blotch and terminal heat stress, respectively. The genetic analysis using 6734 SNP markers identified 37 significant loci for the area under the disease progress curve (AUDPC) and NDVI. The genome-wide functional annotation of the SNP markers revealed gene functions such as plant chitinases, NB-ARC and NBS-LRR, and the peroxidase superfamily Cytochrome P450 have a positive role in the resistance through a hypersensitive response. Zinc finger domains, cysteine protease coding gene, F-box protein, ubiquitin, and associated proteins, play a substantial role in the combined stress of spot blotch and terminal heat in bread wheat, according to genomic domains ascribed to them. The study also highlights T. speltoides as a source of resistance to spot blotch and terminal heat tolerance. 2022-11-05 2023-01-17T14:28:01Z 2023-01-17T14:28:01Z Journal Article https://hdl.handle.net/10568/127297 en Open Access application/pdf MDPI Navathe, S., Pandey, A. K., Sharma, S., Chand, R., Mishra, V. K., Kumar, D., Jaiswal, S., Iquebal, M. A., Govindan, V., Joshi, A. K., & Singh, P. K. (2022). New Genomic Regions Identified for Resistance to Spot Blotch and Terminal Heat Stress in an Interspecific Population of Triticum aestivum and T. spelta. Plants, 11(21), 2987. https://doi.org/10.3390/plants11212987 |
| spellingShingle | bipolaris sorokiniana heat stress wheat resistance varieties Sudhir Navathe Pandey, Ajeet Kumar Sandeep Sharma Chand, Ramesh Vinod Kumar Mishra Kumar, Dinesh Jaiswal, Sarika K. Mir Asif Iquebal Velu, Govindan Joshi, Arun Kumar Singh, Pawan K. New genomic regions identified for resistance to spot blotch and terminal heat stress in an interspecific population of triticum aestivum and T. spelta |
| title | New genomic regions identified for resistance to spot blotch and terminal heat stress in an interspecific population of triticum aestivum and T. spelta |
| title_full | New genomic regions identified for resistance to spot blotch and terminal heat stress in an interspecific population of triticum aestivum and T. spelta |
| title_fullStr | New genomic regions identified for resistance to spot blotch and terminal heat stress in an interspecific population of triticum aestivum and T. spelta |
| title_full_unstemmed | New genomic regions identified for resistance to spot blotch and terminal heat stress in an interspecific population of triticum aestivum and T. spelta |
| title_short | New genomic regions identified for resistance to spot blotch and terminal heat stress in an interspecific population of triticum aestivum and T. spelta |
| title_sort | new genomic regions identified for resistance to spot blotch and terminal heat stress in an interspecific population of triticum aestivum and t spelta |
| topic | bipolaris sorokiniana heat stress wheat resistance varieties |
| url | https://hdl.handle.net/10568/127297 |
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