ArticleGenes & genomics2021
Identification of QTLs associated with the anaerobic germination potential using a set of Oryza nivara introgression lines.
Article in Genes & genomics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 21 citations in OpenAlex.
- GWAS Combined with WGCNA of Transcriptome and Metabolome to Excavate Key Candidate Genes for Rice Anaerobic Germination.Rice (New York, N.Y.) · 2023Article
- Substitution Mapping and Allelic Variations of the Domestication Genes from O. rufipogon and O. nivara.Rice (New York, N.Y.) · 2023Article
- Climate change challenges, plant science solutions.The Plant cell · 2023Article
- High-density genetic mapping identified QTLs for anaerobic germination tolerance in rice.Frontiers in plant science · 2022Article
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11 authors at 2 institutions in 1 country.
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Abstract
backgroundRice (Oryza sativa L.) is an important crop and a staple food for half of the population around the world. The recent water and labor shortages are encouraging farmers to shift from traditional transplanting to direct-seeding. However, poor germination and slow elongation of the coleoptile constrains large-scale application of direct-seeding.
objectiveThis study was aimed to investigate the genetic basis of the anaerobic germination (AG) potential using a set of Oryza nivara (O. nivara) introgression lines (ILs).
methodsIn this study, a total of 131 ILs were developed by introducing O. nivara chromosome segments into the elite indica rice variety 93-11 through advanced backcrossing and repeated selfing. A high-density genetic map has been previously constructed with 1,070 bin-markers. The seeds of ILs were germinated and used to measure coleoptile length under normal and anaerobic conditions. QTLs associated with AG potential were determined in rice.
resultsBased on the high-density genetic map of the IL population, two QTLs, qAGP1 and qAGP3 associated with AG tolerance were characterized and located on chromosomes 1 and 3, respectively. Each QTL explained 15% of the phenotypic variance. Specifically, the O. nivara-derived chromosome segments of the two QTLs were positively tolerance to anaerobic condition by increasing coleoptile length. In a further analysis of public transcriptome data, a total of 26 and 36 genes within qAGP1 and qAGP3 were transcriptionally induced by anaerobic stress, respectively.
conclusionsUtilization of O. nivara-derived alleles at qAGP1 and qAGP3 can potentially enhance tolerance to anaerobic stress at the germination stage in rice, thereby accelerating breeding of rice varieties to be more adaptative for direct-seeding.
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