ArticleRice (New York, N.Y.)2019
Multiple areas investigation reveals the genes related to vascular bundles in rice.
Article in Rice (New York, N.Y.), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 23 citations in OpenAlex.
- Integrative molecular mechanisms of lodging resistance in rice (Frontiers in plant science · 2026Review
- Characterization of QTLs for diameter in panicle neck and substitution mapping ofBreeding science · 2024Article
- Application of Open Panicle Traits in Improving the Filling Characteristics at the Base ofPlants (Basel, Switzerland) · 2024Article
- Identification and characterization of stable QTLs for vascular bundle number at the panicle neck in rice (Breeding science · 2023Article
- QTL mapping and identification of candidate genes for cold tolerance at the germination stage in wild rice.Genes & genomics · 2023Article
- Large Vascular Bundle Phloem Area 4 enhances grain yield and quality in rice via source-sink-flow.Plant physiology · 2023Article
- Genetic and molecular factors in determining grain number per panicle of rice.Frontiers in plant science · 2022Review
- Identification of QTL for Stem Traits in Wheat (Frontiers in plant science · 2022Article
- Genome-Wide Association Study of Vascular Bundle-Related Traits in Maize Stalk.Frontiers in plant science · 2021Article
- Dissecting the phenotypic components and genetic architecture of maize stem vascular bundles using high-throughput phenotypic analysis.Plant biotechnology journal · 2021Article
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Authors and funding
4 authors at 1 institution in 1 country.
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Abstract
backgroundThe vascular bundle in the panicle neck is a crucial trait in rice (Oryza sativa) production that differs between the indica and japonica subspecies. However, the effect of indica/japonica genetic background on the vascular bundles remains unknown.
resultsA series of recombinant inbred lines (RILs) derived from a cross between japonica and indica were planted in three areas. High-throughput sequencing was conducted to determine the indica pedigree percentage and for quantitative trait locus (QTL) analysis. The indica pedigree affected the number of large vascular bundles (LVBs), but not the number of small vascular bundles (SVBs). QTL analysis identified a locus (qLVB9) that was pleiotropic for both LVBs and SVBs in all three areas, and qLVB9 appeared synonymous with DENSE AND ERECT PANICLE 1 (DEP1). Using CRISPR/Cas9 gene editing and gene overexpression technology, we confirmed that the truncated dep1 allele increased the number of LVBs, and resulted in LVBs more closely associated to the indica pedigree. RNA sequencing showed that the truncated dep1 allele downregulated the AP2-like gene family. The double mutant for the DEP1 and AP2-like genes (OsAP2-39) showed decreased endogenous abscisic acid (ABA) level and insensitivity to exogenous ABA treatment, confirming that both DEP1 and OsAP2-39 are involved in the ABA response mechanism.
conclusionsThe present study showed the qLVB9/DEP1 affects LVBs, and involved in ABA signaling via regulating the AP2-like gene family. These results offer new insights into the function of qLVB9/DEP1 in rice.
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