ArticleBMC plant biology2021
Exploiting natural variation in crown root traits via genome-wide association studies in maize.
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, 1 of them a synthesis that pooled it.
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14 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Genome-Wide Meta-Analysis of QTLs Associated with Root Traits and Implications for Maize Breeding.International journal of molecular sciences · 2023Pooled it
- Identification of a Major QTL Controlling Maize Lateral Root Branching Number Through Integrated BSA-Seq and Transcriptome Analysis.International journal of molecular sciences · 2026Article
- Genetic architecture and functional consequences of lateral root length in maize.Journal of experimental botany · 2026Article
- Diversity of Root System Architecture in Mediterranean Maize Inbred Lines Provides New Breeding Opportunities to Improve Stress Resilience and Resource Efficiency.Plants (Basel, Switzerland) · 2026Article
- Genome-wide association study of salicylic acid provides genetic insights for tea plant selective breeding.Horticulture research · 2025Article
- Metabolic marker-assisted genomic prediction improves hybrid breeding.Plant communications · 2025Article
- Identification of phenotypic and transcriptomic signatures underpinning maize crown root systems.Plant phenomics (Washington, D.C.) · 2025Article
- Exploring Hormonal Pathways and Gene Networks in Crown Root Formation Under Stress Conditions: An Update.Plants (Basel, Switzerland) · 2025Review
- Validating the contributions of stem and root traits to barley lodging in western Canada.Frontiers in plant science · 2025Article
- OUR1/OsbZIP1-Frontiers in plant science · 2025Article
- Genome-wide association study and genomic selection of brace root traits related to lodging resistance in maize.Scientific reports · 2024Article
- Identification of QTL, QTL-by-environment interactions, and their candidate genes for resistance HG Type 0 and HG Type 1.2.3.5.7 in soybean using 3VmrMLM.Frontiers in plant science · 2023Article
- GWAS of adventitious root formation in roses identifies a putative phosphoinositide phosphatase (SAC9) for marker-assisted selection.PloS one · 2023Article
- Identification and Analysis of Zinc Efficiency-Associated Loci in Maize.Frontiers in plant science · 2021Article
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Authors and funding
8 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundRoot system architecture (RSA), which is determined by the crown root angle (CRA), crown root diameter (CRD), and crown root number (CRN), is an important factor affecting the ability of plants to obtain nutrients and water from the soil. However, the genetic mechanisms regulating crown root traits in the field remain unclear.
methodsIn this study, the CRA, CRD, and CRN of 316 diverse maize inbred lines were analysed in three field trials. Substantial phenotypic variations were observed for the three crown root traits in all environments. A genome-wide association study was conducted using two single-locus methods (GLM and MLM) and three multi-locus methods (FarmCPU, FASTmrMLM, and FASTmrEMMA) with 140,421 SNP.
resultsA total of 38 QTL including 126 SNPs were detected for CRA, CRD, and CRN. Additionally, 113 candidate genes within 50 kb of the significant SNPs were identified. Combining the gene annotation information and the expression profiles, 3 genes including GRMZM2G141205 (IAA), GRMZM2G138511 (HSP) and GRMZM2G175910 (cytokinin-O-glucosyltransferase) were selected as potentially candidate genes related to crown root development. Moreover, GRMZM2G141205, encoding an AUX/IAA transcriptional regulator, was resequenced in all tested lines. Five variants were identified as significantly associated with CRN in different environments. Four haplotypes were detected based on these significant variants, and Hap1 has more CRN.
conclusionsThese findings may be useful for clarifying the genetic basis of maize root system architecture. Furthermore, the identified candidate genes and variants may be relevant for breeding new maize varieties with root traits suitable for diverse environmental conditions.
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