ArticleBMC plant biology2021
Association mapping of drought tolerance and agronomic traits in rice (Oryza sativa L.) landraces.
Article in BMC plant biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed.
- Conservation and Sustainable Development of Rice Landraces for Enhancing Resilience to Climate Change, with a Case Study of 'Pantiange Heigu' in China.Life (Basel, Switzerland) · 2026Review
- Uncovering natural variation inFrontiers in plant science · 2026Article
- Genome-wide association analysis in identification of superior haplotypes for vegetative stage drought stress tolerance in rice.Physiology and molecular biology of plants : an international journal of functional plant biology · 2025Article
- Resistance Spectrum Analysis and Breeding Utilization of Rice Blast Resistance GenePlants (Basel, Switzerland) · 2025Article
- Integrative gene duplication and genome-wide analysis as an approach to facilitate wheat reverse genetics: An example in the TaCIPK family.Journal of advanced research · 2024Article
- Genome-Wide Association Study of Rice Diversity Panel Reveals New QTLs for Tolerance to Water Deficit Under the Egyptian Conditions.Rice (New York, N.Y.) · 2024Article
- Genetic potential of grain-related traits in rice landraces: phenomics and multi-locus association analyses.Molecular biology reports · 2023Article
- Transcriptomic and co-expression network analyses on diverse wheat landraces identifies candidate master regulators of the response to early drought.Frontiers in plant science · 2023Article
- Article
- Changes in physiological traits and expression of key genes involved in sugar signaling pathway in rice under high temperature stress.3 Biotech · 2022Article
- Favorable QTLs from Oryza longistaminata improve rice drought resistance.BMC plant biology · 2022Article
- Growth and Nutritional Quality of Lemnaceae Viewed Comparatively in an Ecological and Evolutionary Context.Plants (Basel, Switzerland) · 2022Review
- Intraspecific Variation for Leaf Physiological and Root Morphological Adaptation to Drought Stress in Alfalfa (Frontiers in plant science · 2022Article
- Physiological and molecular implications of multiple abiotic stresses on yield and quality of rice.Frontiers in plant science · 2022Review
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Authors and funding
14 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundAsian cultivars were predominantly represented in global rice panel selected for sequencing and to identify novel alleles for drought tolerance. Diverse genetic resources adapted to Indian subcontinent were not represented much in spite harboring useful alleles that could improve agronomic traits, stress resilience and productivity. These rice accessions are valuable genetic resource in developing rice varieties suited to different rice ecosystem that experiences varying drought stress level, and at different crop stages. A core collection of rice germplasm adapted to Southwestern Indian peninsular genotyped using SSR markers and characterized by contrasting water regimes to associate genomic regions for physiological, root traits and yield related traits. Genotyping-By-Sequencing of selected accessions within the diverse panel revealed haplotype variation in genic content within genomic regions mapped for physiological, morphological and root traits.
resultsDiverse rice panel (99 accessions) were evaluated in field and measurements on plant physiological, root traits and yield related traits were made over five different seasons experiencing varying drought stress intensity at different crop stages. Traits like chlorophyll stability index, leaf rolling, days to 50% flowering, chlorophyll content, root volume and root biomass were identified as best predictors of grain yield under stress. Association mapping revealed genetic variation among accessions and revealed 14 genomic targets associated with different physiological, root and plant production traits. Certain accessions were found to have beneficial allele to improve traits, plant height, root length and spikelet fertility, that contribute to the grain yield under stress. Genomic characterization of eleven accessions revealed haplotype variation within key genomic targets on chromosomes 1, 4, 6 and 11 for potential use as molecular markers to combine drought avoidance and tolerance traits. Genes mined within the genomic QTL intervals identified were prioritized based on tissue specific expression level in publicly available rice transcriptome data.
conclusionThe genetic and genomic resources identified will enable combining traits with agronomic value to optimize yield under stress and hasten trait introgression into elite cultivars. Alleles associated with plant height, specific leaf area, root length from PTB8 and spikelet fertility and grain weight from PTB26 can be harnessed in future rice breeding program.
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