ArticleJournal of experimental botany2022
Characterization of 'QTL-hotspot' introgression lines reveals physiological mechanisms and candidate genes associated with drought adaptation in chickpea.
Article in Journal of experimental botany, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 34 citations in OpenAlex.
- Superior haplotypes for transforming crop breeding.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Review
- From gene discovery to breeding tools: functional KASP markers for flowering time selection in chickpea.BMC plant biology · 2026Article
- QTL mapping and identification of linked markers for anthracnose fruit rot resistance inFrontiers in plant science · 2026Article
- An Australian chickpea pan-genome provides insights into genome organization and offers opportunities for enhancing drought adaptation for crop improvement.Plant biotechnology journal · 2025Article
- Genetic control of stem elongation in common bean and the influence of age and flowering time.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Article
- Review
- Celebrating Professor Rajeev K. Varshney's transformative research odyssey from genomics to the field on his induction as Fellow of the Royal Society.Plant biotechnology journal · 2024Article
- Epigenome-augmented eQTL-hotspots reveal genome-wide transcriptional programs in 36 human tissues.Briefings in bioinformatics · 2024Article
- Integrated multi-omics analysis reveals drought stress response mechanism in chickpea (Cicer arietinum L.).The plant genome · 2024Article
- Whole genome resequencing and phenotyping of MAGIC population for high resolution mapping of drought tolerance in chickpea.The plant genome · 2024Article
- Article
- Identifying physiological and genetic determinants of faba bean transpiration response to evaporative demand.Annals of botany · 2023Article
- Comprehensive Transcriptome Profiling Uncovers Molecular Mechanisms and Potential Candidate Genes Associated with Heat Stress Response in Chickpea.International journal of molecular sciences · 2023Article
- Mining legume germplasm for genetic gains: An Indian perspective.Frontiers in genetics · 2023Review
- Unlocking the hidden variation from wild repository for accelerating genetic gain in legumes.Frontiers in plant science · 2022Review
- Multi-locus genome-wide association studies reveal genomic regions and putative candidate genes associated with leaf spot diseases in African groundnut (Frontiers in plant science · 2022Article
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Authors and funding
16 authors at 11 institutions in 4 countries.
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No grant is acknowledged in the PubMed record.
Abstract
'QTL-hotspot' is a genomic region on linkage group 04 (CaLG04) in chickpea (Cicer arietinum) that harbours major-effect quantitative trait loci (QTLs) for multiple drought-adaptive traits, and it therefore represents a promising target for improving drought adaptation. To investigate the mechanisms underpinning the positive effects of 'QTL-hotspot' on seed yield under drought, we introgressed this region from the ICC 4958 genotype into five elite chickpea cultivars. The resulting introgression lines (ILs) and their parents were evaluated in multi-location field trials and semi-controlled conditions. The results showed that the 'QTL-hotspot' region improved seed yield under rainfed conditions by increasing seed weight, reducing the time to flowering, regulating traits related to canopy growth and early vigour, and enhancing transpiration efficiency. Whole-genome sequencing data analysis of the ILs and parents revealed four genes underlying the 'QTL-hotspot' region associated with drought adaptation. We validated diagnostic KASP markers closely linked to these genes using the ILs and their parents for future deployment in chickpea breeding programs. The CaTIFY4b-H2 haplotype of a potential candidate gene CaTIFY4b was identified as the superior haplotype for 100-seed weight. The candidate genes and superior haplotypes identified in this study have the potential to serve as direct targets for genetic manipulation and selection for chickpea improvement.
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